CN111208200B - A kind of Ti-Al alloy medicine type cover structure consistency detection device and detection method - Google Patents

Abstract

The invention belongs to the technical field of non-destructive testing, and in particular relates to a Ti-Al alloy drug-type cover structure consistency detection device and a detection method. The device for detecting the tissue consistency of the Ti-Al alloy medicine type cap provided by the present invention includes a support rod, an impact force applying part and an audio signal collection part arranged on the side of the support rod when in use, and a collection part with the audio signal. Signal processing software for electrical connection of components. The present invention utilizes the impact force applying component to make the Ti-Al series alloy medicine type cover placed on the support rod to emit sound, obtains the characteristic frequency of the Ti-Al series alloy medicine type cover through the audio signal acquisition component and the signal processing software, and detects the characteristic frequency based on the audio frequency. technology, and compare it with the standard frequency of the standard Ti-Al alloy coating to achieve non-destructive testing of the quality of the Ti-Al alloy coating.

Description

A kind of Ti-Al alloy medicine type cover structure consistency detection device and detection method

technical field

The invention belongs to the technical field of non-destructive testing, and in particular relates to a Ti-Al alloy drug-type cover structure consistency testing device and a testing method.

Background technique

In the process of oil and gas exploitation, the quality of the hood directly determines the perforating effect of the perforating charge. At present, the quality inspection of perforating charges in industrial production mainly relies on manual measurement of the wall thickness of the hood and its shape detection; in order to determine whether the internal organization of the hood is consistent, it is necessary to sample the hood for destructive testing. This detection method generally has the problems of low measurement accuracy, low detection efficiency and low reliability. Considering the aspects of improving the detection efficiency of the drug-type cover, ensuring the quality of the drug-type cover, and realizing 100% detection of the drug-type cover, a high-accuracy non-destructive testing method for the organization consistency of the drug-type cover is required.

Ti-Al alloys belong to intermetallic compounds and have high sound velocity. Ti-Al alloys can form high-speed jets during the loading process, so as to carry more energy, which is conducive to obtaining high penetration depth and wide opening. hole effect. On the one hand, the high-temperature strength of Ti-Al alloys is excellent, and the shape cover of the hood can form short and thick focused jets to achieve the effect of larger openings in the rock; on the other hand, the good high-temperature plasticity of Ti-Al alloys makes the The hood has strong uniform deformation ability under explosive loading conditions, and the jet is not easy to break, so as to obtain good penetration depth and perforation stability. Preliminary experimental results have confirmed that the Ti-Al alloy hood can achieve larger openings for formation rocks and concrete.

For the Ti-Al alloy type cover, the microstructure state in the alloy has a significant impact on the perforating effect of the perforating charge. Therefore, in the industrial production process of the type cover, it is required to ensure that the same product has the same organizational state. So as to ensure the perforating effect of the perforating charges. At present, there is no report on the non-destructive testing method for the internal structure consistency of the Ti-Al alloy hood.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a detection device and a detection method for the consistency of the structure of the Ti-Al alloy drug-type cover. The detection device provided by the present invention has high detection efficiency, and can be Realize the non-destructive testing of the internal structure consistency of the Ti-Al alloy hood.

In order to achieve the above-mentioned purpose of the invention, the present invention provides the following technical solutions:

The present invention provides a device for detecting the consistency of the tissue of a Ti-Al alloy medicine type cover, comprising a support rod 1, an impact force applying part 2 and an audio signal collecting part 3 arranged on the side of the support rod 1 when in use, and Signal processing software 4 electrically connected to the audio signal acquisition component 3 .

Preferably, the height of the support rod 1 is 1.2 to 1.5 times the height of the Ti-Al alloy drug type cover; the top of the support rod 1 is a smooth hemispherical shape, so that the top of the support rod 1 and the Ti-Al alloy drug The inside of the head of the hood constitutes a point support.

Preferably, the impact force applying member 2 includes an arc-shaped sliding rail 21 and an impact ball 22 disposed in the arc-shaped sliding rail 21 .

Preferably, the height of the arc-shaped slide rail 21 is adjustable, and the bottom end of the arc-shaped slide rail 21 and the bottom edge of the Ti-Al alloy medicine type cover placed on the support rod 1 are on the same horizontal plane when in use. .

Preferably, the arc-shaped slide rail 21 is a quarter circle, and the radius of the circle is 15-30 cm.

Preferably, the impact ball 22 is made of metal; the impact ball 22 has a density greater than 7.8 g/cm ³ and a diameter of 5-8 mm.

Preferably, the audio signal acquisition component 3 includes an acoustic sensor and a data acquisition card.

The present invention also provides a method for detecting the tissue consistency of the Ti-Al alloy drug-type cap based on the detection device described in the above technical solution, comprising the following steps:

Place the Ti-Al alloy medicine mask to be tested on the support rod 1 with the opening facing down;

The impact force is exerted on the outside of the Ti-Al alloy medicine-type cover by the impact force applying part 2, so that the Ti-Al series alloy medicine-type cover emits sound;

The audio signal of the sound is collected by the audio signal acquisition component 3, and the frequency spectrum of the Ti-Al alloy drug-type cover to be tested is obtained through the signal processing software 4;

Comparing the frequency spectrum of the Ti-Al alloy medicated cover to be tested with a predetermined standard frequency spectrum to determine whether the structure of the Ti-Al alloy medicated cover to be tested is consistent.

Preferably, the method for applying an impact force includes the following steps: adjusting the height of the arc-shaped slide rail 21 so that the bottom end of the arc-shaped slide rail 21 and the bottom edge of the Ti-Al alloy medicine type cover are on the same horizontal plane ; Adjust the distance between the arc-shaped slide rail 21 and the support rod 1, so that the distance between the bottom end of the arc-shaped slide rail 21 and the bottom edge of the Ti-Al alloy medicine type cover is 2 to 3 times the impact ball 22 diameter; release the impact ball 22 at the fixed position of the arc-shaped slide rail 21, the impact ball 22 slides down along the arc-shaped slide rail 21, and flies out horizontally from the bottom end of the arc-shaped slide rail 21, Hit the bottom edge of the to-be-tested Ti-Al alloy medicated cover.

Preferably, the method for judging the organizational consistency of the Ti-Al alloy drug-type cover to be tested includes the following steps:

Compare the number of eigenfrequencies and the values of each eigenfrequency in the standard spectrum and the spectrum of the Ti-Al alloy hood to be tested;

If the number of eigenfrequencies in the spectrum of the Ti-Al alloy drug-type cover to be tested is consistent with the number of eigenfrequency spectra in the standard spectrum, and each eigenfrequency value is different from the corresponding eigenfrequency value in the standard spectrum< 0.1%, it means that the consistency of the structure of the Ti-Al alloy drug-type cover to be tested is qualified;

If the number of eigenfrequencies in the spectrum of the Ti-Al alloy hood to be tested is inconsistent with the number of eigenfrequency spectra in the standard spectrum, or one or more eigenfrequency values and their corresponding eigenfrequency values in the standard spectrum appear If the difference is greater than or equal to 0.1%, it indicates that the consistency of the structure of the Ti-Al alloy drug-type cover to be tested is unqualified.

The present invention provides a device for detecting the consistency of the tissue of a Ti-Al alloy medicine type cover, comprising a support rod 1, an impact force applying part 2 and an audio signal collecting part 3 arranged on the side of the support rod 1 when in use, and Signal processing software 4 electrically connected to the audio signal acquisition component 3 . In the present invention, the impact force application part 2 is used to make the Ti-Al alloy medicine type cover placed on the support rod 1 to emit sound, and the characteristic frequency of the Ti-Al alloy medicine type cover is collected through the audio signal acquisition part 3 and the signal processing software 4 , Based on the audio detection technology, it is compared with the standard frequency of the standard Ti-Al alloy medicine type cover, and the non-destructive detection of the quality of the Ti-Al alloy medicine type cover is realized. The detection device provided by the invention has high detection efficiency and high accuracy, and can realize non-destructive detection of the internal structure consistency of the Ti-Al alloy medicine type cover.

Description of drawings

Fig. 1 is the structure consistency detection device of Ti-Al alloy medicine type cover provided in Example 1 of the present invention; wherein, 1 is a support rod, 2 is an impact force applying component, 21 is an arc-shaped slide rail, and 22 is an impact ball , 3 is the audio signal acquisition part, 4 is the signal processing software;

Fig. 2 is the standard frequency spectrum of Ti-Al alloy medicine type cover in embodiment 1;

Fig. 3 is the frequency spectrum of the Ti-Al alloy medicine type cover to be tested in Example 1;

Fig. 4 is the frequency spectrum of the Ti-Al alloy medicine type cover to be tested in Example 2;

Fig. 5 is the standard frequency spectrum of Ti-Al alloy medicine type cover in embodiment 3;

Fig. 6 is the frequency spectrum of the Ti-Al alloy medicine type cover to be tested in Example 3;

FIG. 7 is the frequency spectrum of the Ti-Al alloy medicated cap to be tested in Example 4. FIG.

Detailed ways

The present invention provides a device for detecting the consistency of the tissue of a Ti-Al alloy medicine type cover, comprising a support rod 1, an impact force applying part 2 and an audio signal collecting part 3 arranged on the side of the support rod 1 when in use, and Signal processing software 4 electrically connected to the audio signal acquisition component 3 .

The detection device provided by the present invention includes a support rod 1 for suspending the Ti-Al alloy medicine mask to be tested on the support rod 1 with the opening facing downward. In the present invention, the top of the support rod 1 is preferably a smooth hemisphere, so that the top of the support rod 1 and the inner side of the head of the Ti-Al alloy medicine type cover form a point support; the diameter of the smooth hemisphere is preferably < 0.9 times the inner diameter of the head of the Ti-Al alloy hood. In the present invention, the material of the support rod 1 is preferably plastic, specifically PET, HDPE, PVC or PTFE. In the present invention, the height of the support rod 1 is preferably 1.2 to 1.5 times the height of the Ti-Al alloy coating. In a specific embodiment of the present invention, when the height of the Ti-Al alloy coating is When it is preferably 8 to 15 cm, the height of the support rod is specifically preferably 10 to 20 cm. As an embodiment of the present invention, the support rod is fixed on the fixing table.

The detection device provided by the present invention includes an impact force applying part 2 arranged on the side of the support plate when in use, and is used to apply an impact force to the Ti-Al alloy medicine type cover, so that the Ti-Al series alloy medicine type cover emits sound . In the present invention, the impact force applying member 2 preferably includes an arc-shaped sliding rail 21 and an impact ball 22 disposed in the arc-shaped sliding rail 21 . In the present invention, the arc-shaped slide rail 21 is preferably a quarter circle, and the radius of the circle is preferably 15-30 cm. In the present invention, the material of the arc-shaped slide rail 21 is preferably plastic.

In the present invention, the height of the arc-shaped slide rail 21 is preferably adjustable, and the bottom end of the arc-shaped slide rail 21 is preferably connected to the bottom of the Ti-Al alloy medicine type cover placed on the support rod 1 during use. The sides are on the same horizontal plane; the distance between the bottom end of the arc-shaped slide rail 21 and the bottom edge of the Ti-Al alloy medicine type cover is preferably 2 to 3 times the diameter of the impact ball 22, specifically 10 to 16 mm. In the present invention, plasticine is preferably placed directly below the bottom end of the arc-shaped slide rail 21 , and the size of the plasticine is preferably 20-30 mm. In the present invention, plasticine is used to catch the impacting balls 22 that have hit the Ti-Al alloy medicine-type cover, so as to avoid the occurrence of interference signals. In the present invention, the arc-shaped sliding rail 21 is preferably slidably fixed on a fixing frame; the fixing frame preferably includes a fixing table and a fixing rod vertically arranged on the fixing table, and the arc-shaped sliding rail 21 The top of the fixed rod is preferably fixed on the top of the fixed rod. The fixed rod is preferably composed of two sections of fixed rods. The fixed rod can be adjusted telescopically. In the present invention, the height of the fixed rod is preferably adjusted through the bolts between the two sections of the fixed rod. Then adjust the height of the arc slide rail. In the present invention, the plasticine is preferably placed on the surface of the fixing table.

In the present invention, the material of the impact ball 22 is preferably metal, more preferably brass or tungsten alloy; the density of the impact ball 22 is preferably greater than 7.8g/cm ³ , more preferably 8.7-17.6g/ cm ³ ; the diameter of the impact ball 22 is preferably 5-8 mm.

The detection device provided by the present invention includes an audio signal collecting component 3 disposed at the side of the support rod 1 when in use, and is used for collecting the audio signal of the sound emitted by the Ti-Al alloy medicine type cover. In the present invention, the audio signal acquisition component 3 preferably includes an acoustic sensor and a data acquisition card. In the present invention, the acoustic sensor is preferably a microphone, and the acquisition frequency of the acoustic sensor is preferably 0-40 kHz. In the present invention, the acquisition frequency of the data acquisition card is preferably greater than 40 kHz, and the acquisition time of the data acquisition card is preferably greater than 10s. In the present invention, the acoustic sensor and the data acquisition card are preferably connected by wires.

The detection device provided by the present invention further includes signal processing software 4 electrically connected with the audio signal acquisition part 3, for processing the audio signal acquired by the audio signal acquisition part 3 and performing Fourier transform (FFT), domain signal into frequency domain signal. In the present invention, the signal processing software 4 is preferably Bruel&KjaerPULSE.

The present invention also provides a method for detecting the tissue consistency of the Ti-Al alloy drug-type cap based on the detection device described in the above technical solution, comprising the following steps:

Place the Ti-Al alloy medicine mask to be tested on the support rod 1 with the opening facing down;

The impact force is exerted on the outside of the Ti-Al alloy medicine-type cover by the impact force applying part 2, so that the Ti-Al series alloy medicine-type cover emits sound;

The audio signal of the sound is collected by the audio signal acquisition component 3, and the frequency spectrum of the Ti-Al alloy drug-type cover to be tested is obtained through the signal processing software 4;

Comparing the frequency spectrum of the Ti-Al alloy medicated cover to be tested with a predetermined standard frequency spectrum to determine whether the structure of the Ti-Al alloy medicated cover to be tested is consistent.

In the present invention, the Ti-Al alloy medicine mask to be tested is placed on the support rod 1 with the opening facing down. In a specific embodiment of the present invention, the height of the Ti-Al alloy medicine type cover is preferably 8-15 cm; the diameter of the inner side of the head of the Ti-Al alloy medicine type cover is preferably 4-6 mm.

After placing the Ti-Al alloy medicine type cover, the present invention applies an impact force to the outside of the Ti-Al type alloy medicine type cover by the impact force applying part 2, so that the Ti-Al type alloy medicine type cover is Make noise. In the present invention, the method for applying the impact force preferably includes the following steps: adjusting the height of the arc-shaped slide rail 21 so that the bottom end of the arc-shaped slide rail 21 and the bottom edge of the Ti-Al alloy medicine type cover are in the same position. On the same horizontal plane; adjust the distance between the arc-shaped slide rail 21 and the support rod 1, so that the distance between the bottom end of the arc-shaped slide rail 21 and the bottom edge of the Ti-Al alloy medicine type cover is 2 to 3 times. The diameter of the impact ball 22; the impact ball 22 slides down along the arc-shaped slide rail 21, and flies out horizontally from the bottom end of the arc-shaped slide rail 21, hitting the surface of the Ti-Al alloy medicine cover to be tested. bottom edge. In the present invention, the impact balls 22 impact the bottom edge of the Ti-Al alloy medicine type cover, which can make the vibration more sufficient, and is conducive to the collection of frequency spectrum.

When the Ti-Al alloy medicine type cover emits sound, the present invention uses the audio signal acquisition component 3 to collect the audio signal of the sound, and obtains the frequency spectrum of the Ti-Al series alloy medicine type cover to be tested through the signal processing software 4 . In the present invention, it is preferable to use an acoustic sensor to collect sound, convert the audio signal into an electrical signal through data acquisition card conversion, use the signal processing software 4 to process and transform the signal, convert the time domain signal into a frequency domain signal, and obtain Spectrum of the Ti-Al alloy hood to be tested.

After obtaining the frequency spectrum of the Ti-Al alloy medicine mask to be tested, the present invention compares the frequency spectrum of the Ti-Al alloy medicine mask to be tested with a predetermined standard frequency spectrum to determine the Ti-Al alloy medicine type to be tested Whether the organization of the hood is consistent.

In the present invention, the method for judging the organizational consistency of the Ti-Al alloy drug-type cover to be tested preferably includes the following steps:

Compare the number of eigenfrequencies and the values of each eigenfrequency in the standard spectrum and the spectrum of the Ti-Al alloy hood to be tested;

If the number of eigenfrequencies in the spectrum of the Ti-Al alloy drug-type cover to be tested is consistent with the number of eigenfrequency spectra in the standard spectrum, and each eigenfrequency value is different from the corresponding eigenfrequency value in the standard spectrum< 0.1%, it means that the consistency of the structure of the Ti-Al alloy drug-type cover to be tested is qualified;

If the number of eigenfrequencies in the spectrum of the Ti-Al alloy hood to be tested is inconsistent with the number of eigenfrequency spectra in the standard spectrum, or one or more eigenfrequency values and their corresponding eigenfrequency values in the standard spectrum appear If the difference is greater than or equal to 0.1%, it indicates that the consistency of the structure of the Ti-Al alloy drug-type cover to be tested is unqualified.

In the present invention, the characteristic frequency is the frequency corresponding to each peak in the frequency spectrum.

In the present invention, the method for determining the standard frequency spectrum preferably includes: firstly measuring the frequency spectrum of the Ti-Al alloy medicine type cover product, and then destructively detecting the Ti-Al series alloy medicine type cover product, and the detection items include tissue and For mechanical properties, if it is confirmed that the microstructure of the Ti-Al alloy hood is qualified, the frequency spectrum of the Ti-Al alloy hood is determined as a standard spectrum.

In a specific embodiment of the present invention, it is preferable to mark the number (N) of characteristic frequencies in the standard frequency spectrum and each characteristic frequency value (f ₁ , f ₂ , f ₃ . . . f _N ), if the Ti-Al to be measured is The number (n) of eigenfrequencies in the frequency spectrum of the alloy hood is consistent with the standard spectrum (N), and each eigenfrequency of the Ti-Al alloy hood to be tested (f ₁ *, f ₂ *, f ₃ *...f _n *) and the corresponding characteristic frequencies ₍ f ₁ , f ₂ , f ₃ . Consistent with the standard medicine type cover, it is judged that the Ti-Al alloy medicine type cover to be tested is qualified; if the number of characteristic frequencies in the spectrum of the to-be-tested Ti-Al alloy medicine type cover (n) and the standard spectrum (N) Inconsistent, or one or more eigenfrequencies differ from the corresponding eigenfrequency in the standard spectrum by ≥0.1%, it indicates that the structure of the Ti-Al alloy drug-type cover to be tested is inconsistent with the standard drug-type cover of the same size, and it is determined that the The test of Ti-Al alloy medicine type cover is unqualified.

The detection method provided by the invention can realize the non-destructive detection of the structure consistency of the Ti-Al alloy medicine type cover; can accurately judge the qualified condition of the structure of the Ti-Al alloy medicine type cover, and the accuracy rate is more than 99%; The detection method is simple to operate and has wide applicability, and can perform tissue consistency detection on Ti-Al alloy drug-type covers of various compositions, shapes and sizes.

The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

As shown in FIG. 1 , the Ti-Al alloy medicine type cover tissue consistency detection device used in the embodiment of the present invention includes a support rod 1 , an impact force applying part 2 and an audio signal collecting part arranged on the side of the support rod 1 . 3, and the signal processing software 4 electrically connected with the audio signal acquisition part 3; wherein, the impact force applying part 2 comprises an arc-shaped slide rail 21 fixed on the fixing frame and an arc-shaped slide rail 21 arranged on the The impact ball 22 inside.

Example 1

The detection device shown in Figure 1 is used to detect the consistency of the structure of the Ti-Al alloy coating. First, determine the standard spectrum of the Ti-Al alloy coating:

Put the standard Ti-Al alloy medicine type cover (material: Ti-46Al-1.5V-0.2C (at.%), height 8cm, inner diameter of the head Ф4mm) with the opening facing down and hanging on the support rod in the positive direction 1, the material of the support rod 1 is PVC, the height is 13cm, and the top of the support rod 1 is a smooth hemisphere with a diameter of 3mm; The material of the ball 22 is brass, the density is 8.7g/cm ³ , and the diameter is 8mm; choose the arc-shaped slide rail 21 with a radius of 20cm, and adjust its height so that the bottom end of the arc-shaped slide rail 21 is in line with the Ti-Al The distance between the bottom edge of the alloy medicine type cover is 16mm; the impact ball 22 is released from the top of the arc-shaped slide rail 21, the impact ball 22 slides down along the arc-shaped slide rail 21, and flies horizontally from the bottom end, hitting the standard Ti- The bottom edge of the Al-based alloy drug-type cover makes the Ti-Al-based alloy drug-type cover vibrate freely and emit sound; the sound is collected by an acoustic sensor (microphone, acquisition frequency 0-40kHz), and the sound is collected by a data acquisition card (collection frequency>40kHz, acquisition time>10s) conversion, using the signal processing software 4Bruel&KjaerPULSE, the collected audio signal is processed and Fourier transform (FFT) is performed, the time domain signal is converted into a frequency domain signal, and the frequency spectrum is obtained; for the standard Ti-Al system Destructive testing is carried out on the product of the alloy medicine type cover. The test items include the structure and mechanical properties. The inspection confirms that the organizational state of the Ti-Al alloy medicine type cover is qualified, and the frequency spectrum of the Ti-Al series alloy medicine type cover is determined as the standard spectrum. As shown in Figure 2, determine the number of eigenfrequency N=8 of the standard parts and each eigenfrequency: f1 ₌ 2688Hz, f2= _5280Hz , _f3 = _5968Hz , _f4 = _10304Hz , f5=12544Hz, f6= 15664 Hz, f ₇ =17936 Hz, f ₈ =19520 Hz.

Then obtain the frequency spectrum of the Ti-Al alloy hood to be tested: the Ti-Al alloy hood to be tested (the material, shape, and size are the same as the standard parts), place the opening of the Ti-Al alloy hood to be tested downward , positively suspended on the support rod 1, the material of the support rod 1 is PVC, the height is 13cm, the top of the support rod 1 is a smooth hemisphere with a diameter of 3mm; The impact ball 22 is formed, the material of the impact ball 22 is brass, the density is 8.7g/cm ³ , and the diameter is 8 mm; The distance between the bottom end and the bottom edge of the Ti-Al alloy medicine type cover is 16mm; the impact ball 22 is released at the same height (the top of the slide rail) as the standard part test, and the impact ball 22 slides along the arc. The rail 21 slides down, flies out horizontally from the bottom end, and hits the bottom edge of the Ti-Al alloy drug-type cover to be tested, so that the Ti-Al-based alloy drug-type cover to be tested vibrates freely and emits sound; using an acoustic sensor (microphone, collecting Frequency 0~40kHz) to collect the sound, convert it through the data acquisition card (acquisition frequency>40kHz, acquisition time>10s), use the signal processing software 4Bruel&Kjaer PULSE to process the collected audio signal and perform Fourier transform (FFT) to convert the time The domain signal is converted into a frequency domain signal, and the spectrum of the Ti-Al alloy hood to be tested is obtained, as shown in Figure 3. It can be seen from Figure 3 that the number of characteristic frequencies in the frequency spectrum of the Ti-Al alloy hood to be tested is n=8, and the number of characteristic frequencies (n) of the Ti-Al alloy hood to be tested is related to the standard frequency spectrum. (N) are identical, and the respective characteristic frequencies f ₁ *=2684 Hz, f ₂ *=5283 Hz, f ₃ *=5965 Hz, f ₄ *=10298 Hz, f ₅ *=12541 Hz, f ₆ *=15657 Hz, f ₇ *=17940 Hz , f ₈ *= _19515Hz , the error of its corresponding characteristic frequency (f ₁ , f ₂ , f ₃ . , the obtained results are all consistent with the above, indicating that the structure of the tested Ti-Al alloy medicine type cover is consistent with the standard medicine type cover, and it is judged that the tested Ti-Al series alloy medicine type cover is qualified.

The destructive method is used to detect the Ti-Al alloy drug-type cover to be tested in Example 1, and the result is also judged to be qualified for the Ti-Al-based alloy drug-type cover to be tested, which is consistent with the detection results of the method of the present invention, indicating that the method obtained by the present invention is obtained. The detection results are highly accurate.

Example 2

The detection device shown in Figure 1 is used to detect the consistency of the structure of the Ti-Al alloy coating. First, determine the standard spectrum of the Ti-Al alloy coating:

Put the standard Ti-Al alloy medicine type cover (material: Ti-46Al-1.5V-0.2C (at.%), height 8cm, inner diameter of the head Ф4mm) with the opening facing down and hanging on the support rod in the positive direction 1, the material of the support rod 1 is PVC, the height is 13cm, and the top of the support rod 1 is a smooth hemisphere with a diameter of 3mm; The material of the ball 22 is brass, the density is 8.7g/cm ³ , and the diameter is 8mm; choose the arc-shaped slide rail 21 with a radius of 20cm, and adjust its height so that the bottom end of the arc-shaped slide rail 21 is in line with the Ti-Al The distance between the bottom edge of the alloy medicine type cover is 16mm; the impact ball 22 is released from the top of the arc-shaped slide rail 21, the impact ball 22 slides down along the arc-shaped slide rail 21, and flies horizontally from the bottom end, hitting the standard Ti- The bottom edge of the Al-based alloy drug-type cover makes the Ti-Al-based alloy drug-type cover vibrate freely and emit sound; the sound is collected by an acoustic sensor (microphone, acquisition frequency 0-40kHz), and the sound is collected by a data acquisition card (collection frequency>40kHz, acquisition time>10s) conversion, using the signal processing software 4Bruel&KjaerPULSE, the collected audio signal is processed and Fourier transform (FFT) is performed, the time domain signal is converted into a frequency domain signal, and the frequency spectrum is obtained; for the standard Ti-Al system Destructive testing is carried out on the product of the alloy medicine type cover. The test items include the structure and mechanical properties. The inspection confirms that the organizational state of the Ti-Al alloy medicine type cover is qualified, and the frequency spectrum of the Ti-Al series alloy medicine type cover is determined as the standard spectrum. As shown in Figure 2, determine the number of eigenfrequency N=8 of the standard parts and each eigenfrequency: f1 ₌ 2688Hz, f2= _5280Hz , _f3 = _5968Hz , _f4 = _10304Hz , f5=12544Hz, f6= 15664 Hz, f ₇ =17936 Hz, f ₈ =19520 Hz.

Then obtain the frequency spectrum of the Ti-Al alloy hood to be tested: the Ti-Al alloy hood to be tested (uniform in material, shape, and size are the same as the standard parts in Example 1), place the Ti-Al alloy hood to be tested The opening is downward, and it is suspended on the support rod 1. The material of the support rod 1 is PVC and the height is 13cm. The top of the support rod 1 is a smooth hemisphere with a diameter of 3mm; The rail 21 and the impact ball 22 are formed, the impact ball 22 is made of brass, the density is 8.7g/cm ³ , and the diameter is 8mm; choose the arc-shaped slide rail 21 with a radius of 20cm, and adjust its height to make the arc slide. The distance between the bottom end of the rail 21 and the bottom edge of the Ti-Al alloy medicine type cover is 16mm; the impact ball 22 is released at the same height (the top of the slide rail) as the standard part test, and the impact ball 22 is The arc-shaped slide rail 21 slides down and flies out horizontally from the bottom end, hitting the bottom edge of the Ti-Al alloy drug-type cover to be tested, so that the Ti-Al-based alloy drug-type cover to be tested vibrates freely and emits sound; using the acoustic sensor ( Microphone, acquisition frequency 0~40kHz) to collect sound, convert it through data acquisition card (acquisition frequency>40kHz, acquisition time>10s), use signal processing software 4Bruel&Kjaer PULSE to process the collected audio signal and perform Fourier transform (FFT) , convert the time-domain signal into a frequency-domain signal, and obtain the spectrum of the Ti-Al alloy hood to be tested, as shown in Figure 4.

It can be seen from Figure 4 that the number of eigenfrequencies in the spectrum of the Ti-Al alloy hood to be tested is n=9, which is inconsistent with the comparison result of the standard spectrum, lacks the eigenfrequency f _2* , and is more than the standard spectrum. 2 characteristic frequencies: f _9# and f _10# , which indicate that the structure of the tested Ti-Al alloy hood is inconsistent with the standard hood of the same size, and it is judged that the tested Ti-Al alloy hood is unqualified.

The destructive method was used to detect the Ti-Al alloy drug-type cover to be tested in Example 2, and the result was also to judge that the Ti-Al-based alloy drug-type cover to be tested was unqualified, which was consistent with the detection results of the method of the present invention, indicating that the present invention obtained The detection results have high accuracy.

Example 3

The detection device shown in Figure 1 is used to detect the consistency of the structure of the Ti-Al alloy coating. First, determine the standard spectrum of the Ti-Al alloy coating:

Put the standard Ti-Al alloy hood (material: Ti-48Al-2Cr-2Mn (at.%), 15cm in height, 6mm in diameter inside the head) with the opening facing down and hang it on the support rod 1 in the positive direction , the material of the support rod 1 is polyethylene, the height is 20cm, the top of the support rod 1 is a smooth hemisphere with a diameter of 5mm; The material of 22 is tungsten alloy, the density is 17.6g/cm ³ , and the diameter is 5mm; choose the arc-shaped slide rail 21 with a radius of 25cm, and adjust its height so that the bottom end of the arc-shaped slide rail 21 is in line with the Ti-Al system. The distance between the bottom edge of the alloy medicine type cover is 10mm; the impact ball 22 is released from the top of the arc-shaped slide rail 21, the impact ball 22 slides down along the arc-shaped slide rail 21, and flies horizontally from the bottom end, hitting the standard Ti-Al The bottom edge of the alloy medicine type cover makes the Ti-Al alloy medicine type cover vibrate freely and emit sound; use the acoustic sensor (microphone, collection frequency 0~40kHz) to collect the sound, and collect the sound through the data acquisition card (collection frequency>40kHz). time > 10s) conversion, using the signal processing software 4Bruel&KjaerPULSE, the collected audio signal is processed and Fourier transform (FFT) is performed, the time domain signal is converted into a frequency domain signal, and the Ti-Al alloy medicine type cover is obtained. Standard spectrum to obtain spectrum; destructive testing is carried out on the standard Ti-Al alloy drug-type cover product, the test items include structure and mechanical properties, the inspection confirms that the organizational state of the Ti-Al alloy drug-type cover is qualified, and the said The frequency spectrum of the Ti-Al alloy powder cover is the standard frequency spectrum. As shown in Fig. 5, the number of characteristic frequencies N=18 and each characteristic frequency of the standard parts are determined: f ₁ =1248Hz, f ₂ =2720Hz, f ₃ =4688Hz , _f4 = _6288Hz , f5= _7152Hz , f6= _8496Hz , f7= _10832Hz , f8= _11648Hz , f9= _12720Hz , f10= _13856Hz , f11= _14768Hz , f12= _15472Hz , f13=17024Hz , f14= _17824Hz , _f15 = _18896Hz , f16=21024Hz, _f17 = _22576Hz , f18=24512Hz.

Then obtain the frequency spectrum of the Ti-Al alloy hood to be tested: the Ti-Al alloy hood to be tested (uniform in material, shape and size) Downward, suspended on the support rod 1, the material of the support rod 1 is polyethylene, the height is 20cm, the top of the support rod 1 is a smooth hemisphere with a diameter of 5mm; The rail 21 and the impact ball 22 are formed. The impact ball 22 is made of tungsten alloy, the density is 17.6g/cm ³ , and the diameter is 5mm. The distance between the bottom end of the rail 21 and the bottom edge of the Ti-Al alloy medicine cover to be tested is 10mm; the impact ball 22 is released at the same height as the standard part test, and the impact ball 22 is along the arc-shaped slide rail 21. It slides down and flies out horizontally from the bottom end, hitting the bottom edge of the Ti-Al alloy drug cover to be tested, so that the Ti-Al alloy drug cover to be tested vibrates freely and emits sound; using an acoustic sensor (microphone, the acquisition frequency is 0 ～40kHz) to collect the sound, convert it through the data acquisition card (acquisition frequency>40kHz, acquisition time>10s), use the signal processing software 4Bruel&Kjaer PULSE to process the collected audio signal and perform Fourier transform (FFT) to convert the time domain signal. Convert it into a frequency domain signal to obtain the frequency spectrum of the Ti-Al alloy hood to be tested, as shown in Figure 6. As can be seen from Figure 6, the number of characteristic frequencies in the spectrum of the Ti-Al alloy hood to be tested n=18, the number of characteristic frequencies (n) of the Ti-Al alloy hood to be tested is consistent with the standard frequency spectrum (N), and each characteristic frequency f ₁ *=1251 Hz, f ₂ *=2718 Hz, f ₃ * = _4688Hz , _f4 *= _6287Hz , f5*= _7155Hz , f6*= _8494Hz , f7*= _10836Hz , f8*= _11645Hz , f9*=12722Hz, f10*= _13855Hz , f11*=14762Hz , f12*=15470Hz, f13*= _17024Hz , f14*= _17821Hz , _f15 *= _18897Hz , f16*= _21025Hz , _f17 *= _22576Hz , f18*=24514Hz, their corresponding characteristics in the standard spectrum The error of frequency (f ₁ , f ₂ , f ₃ ... f _N ) is less than 0.1%. Each test piece is tested 3 times, and different parts are tapped each time. The results are consistent with the above, indicating that the Ti-Al to be tested The structure of the alloy medicine type cover is consistent with the standard medicine type cover, and the Ti-Al alloy medicine type cover to be tested is judged to be qualified.

The destructive method was used to detect the Ti-Al alloy drug-type cover to be tested in Example 3, and the result was also judged to be qualified for the Ti-Al-based alloy drug-type cover to be tested, which was consistent with the detection results of the method of the present invention, indicating that the method obtained by the present invention was obtained. The detection results are highly accurate.

Example 4

The detection device shown in Figure 1 is used to detect the consistency of the structure of the Ti-Al alloy coating. First, determine the standard spectrum of the Ti-Al alloy coating:

Place the standard Ti-Al alloy hood (material: Ti-48Al-2Cr-2Mn (at.%), 15cm in height, 6mm in diameter on the inside of the head) with the opening facing down, and hang it on the support rod 1. Above, the material of the support rod 1 is polyethylene, the height is 20cm, and the top of the support rod 1 is a smooth hemisphere with a diameter of 5mm; The material of the ball 22 is tungsten alloy, the density is 17.6g/cm ³ , and the diameter is 5mm; choose the arc-shaped slide rail 21 with a radius of 25cm, and adjust its height so that the bottom end of the arc-shaped slide rail 21 is in line with the Ti-Al The distance between the bottom edge of the alloy medicine type cover is 10mm; the impact ball 22 is released from the top of the arc-shaped slide rail 21, and the impact ball 22 slides down along the arc-shaped slide rail 21, and flies horizontally from the bottom end, hitting the standard Ti- The bottom edge of the Al-based alloy drug-type cover makes the Ti-Al-based alloy drug-type cover vibrate freely and emit sound; the sound is collected by an acoustic sensor (microphone, acquisition frequency 0-40kHz), and the sound is collected by a data acquisition card (collection frequency>40kHz, Acquisition time>10s) conversion, using the signal processing software 4Bruel & KjaerPULSE to process the collected audio signal and perform Fourier transform (FFT), convert the time domain signal into a frequency domain signal, and obtain the Ti-Al alloy medicine type cover The standard spectrum is obtained, and the spectrum is obtained; destructive testing is carried out on the standard Ti-Al alloy drug-type cover product, and the test items include structure and mechanical properties. The inspection confirms that the organizational state of the Ti-Al-based alloy drug-type cover is qualified, and the test is determined. The frequency spectrum of the Ti-Al alloy hood is the standard frequency spectrum. As shown in Figure 5, the number of eigenfrequency N=18 and each eigenfrequency of the standard part are determined: f ₁ =1248Hz, f ₂ =2720Hz, f ₃ = _4688Hz , _f4 = _6288Hz , f5= _7152Hz , f6= _8496Hz , f7= _10832Hz , f8= _11648Hz , f9= _12720Hz , f10= _13856Hz , f11=14768Hz, f12= _15472Hz , f13= _17024Hz , f14= _17824Hz , _f15 = _18896Hz , f16=21024Hz, _f17 =22576Hz, f18=24512Hz.

Obtain the frequency spectrum of the Ti-Al alloy hood to be tested: the Ti-Al alloy hood to be tested The Ti-Al alloy hood to be tested (uniform in material, shape, and size is the same as the standard parts in Example 3) will be It is measured that the opening of the Ti-Al alloy medicine type cover is downward, and is suspended on the support rod 1. The material of the support rod 1 is polyethylene, the height is 20cm, and the top of the support rod 1 is a smooth hemisphere with a diameter of 5mm. The impact force application part 2 is composed of an arc-shaped slide rail 21 and an impact ball 22. The impact ball 22 is made of tungsten alloy, the density is 17.6g/cm ³ , and the diameter is 5mm; the arc slide rail with a radius of 25cm is selected 21. Adjust its height so that the distance between the bottom end of the arc-shaped slide rail 21 and the bottom edge of the Ti-Al alloy drug-type cover to be tested is 10mm; release the impact ball 22 at the same height as the standard part test, the described The impact ball 22 slides down along the arc-shaped slide rail 21, and flies out horizontally from the bottom end, hitting the bottom edge of the Ti-Al alloy medicine cover to be tested, so that the Ti-Al alloy medicine cover to be tested vibrates freely and emits a sound ;Use the acoustic sensor (microphone, collection frequency 0~40kHz) to collect the sound, convert it through the data acquisition card (collection frequency>40kHz, collection time>10s), use the signal processing software 4Bruel&KjaerPULSE to process the collected audio signal and perform Fourier Transform (FFT), convert the time-domain signal into a frequency-domain signal, and obtain the spectrum of the Ti-Al alloy powder cover to be tested, as shown in Figure 7. It can be seen from Fig. 7 that the number of characteristic frequencies in the spectrum of the Ti-Al alloy hood to be tested is n=16, which is inconsistent with the comparison result of the standard spectrum, and the characteristic frequencies f _2* and f _16* are missing, indicating that the test is to be The structure of the Ti-Al alloy hood is inconsistent with the standard hood of the same size, and it is determined that the Ti-Al alloy hood to be tested is unqualified.

The destructive method was used to detect the Ti-Al alloy drug-type cover to be tested in Example 4, and the result was also to judge that the Ti-Al-based alloy drug-type cover to be tested was unqualified, which was consistent with the detection results of the method of the present invention, indicating that the present invention obtained The detection results have high accuracy.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made. It should be regarded as the protection scope of the present invention.

Claims (6)

1. A method for detecting the consistency of the structure of a Ti-Al alloy medicine type cover, comprising the following steps: A device for detecting the tissue consistency of a Ti-Al alloy medicine type cover, comprising a support rod (1), an impact force applying part (2) and an audio signal collecting part (3) arranged at the side of the support rod (1) during use ), and the signal processing software (4) electrically connected with the audio signal acquisition part (3); the impact force applying part (2) comprises an arc-shaped slide rail (21) and a The impact ball (22) in 21); Place the Ti-Al alloy medicine mask to be tested on the support rod (1) with the opening facing down; The impact force is exerted on the outside of the Ti-Al alloy medicine type cover by the impact force applying component (2), so that the Ti-Al series alloy medicine type cover emits sound; The audio signal of the sound is collected by the audio signal acquisition component (3), and the frequency spectrum of the Ti-Al alloy drug-type cover to be tested is obtained through the signal processing software (4); Comparing the frequency spectrum of the Ti-Al alloy medicated cover to be tested with the predetermined standard frequency spectrum to determine whether the structure of the Ti-Al alloy medicated cover to be tested is consistent; The method for applying an impact force includes the following steps: adjusting the height of the arc-shaped slide rail (21), so that the bottom end of the arc-shaped slide rail (21) and the bottom edge of the Ti-Al alloy medicine type cover are on the same horizontal plane Adjust the distance between the arc-shaped slide rail (21) and the support rod (1), so that the distance between the bottom end of the arc-shaped slide rail (21) and the bottom edge of the Ti-Al alloy medicine type cover is 2 to 3 times the diameter of the impact ball (22); release the impact ball (22) at the fixed position of the arc-shaped slide rail (21), and the impact ball (22) will move along the arc-shaped slide rail (22). 21) slide down, fly out horizontally from the bottom end of the arc-shaped slide rail (21), and hit the bottom edge of the Ti-Al alloy medicine type cover to be tested; The method for judging the organizational consistency of the Ti-Al alloy drug-type cover to be tested includes the following steps: Compare the number of eigenfrequencies and the values of each eigenfrequency in the standard spectrum and the spectrum of the Ti-Al alloy hood to be tested; If the number of eigenfrequencies in the spectrum of the Ti-Al alloy drug-type cover to be tested is consistent with the number of eigenfrequency spectra in the standard spectrum, and each eigenfrequency value is different from the corresponding eigenfrequency value in the standard spectrum< 0.1%, it means that the consistency of the structure of the Ti-Al alloy drug-type cover to be tested is qualified; If the number of eigenfrequencies in the spectrum of the Ti-Al alloy hood to be tested is inconsistent with the number of eigenfrequency spectra in the standard spectrum, or one or more eigenfrequency values and their corresponding eigenfrequency values in the standard spectrum appear If the difference is greater than or equal to 0.1%, it indicates that the consistency of the structure of the Ti-Al alloy drug-type cover to be tested is unqualified. 2 . The detection method according to claim 1 , wherein the height of the support rod ( 1 ) is 1.2 to 1.5 times the height of the Ti-Al alloy medicine type cover; the top of the support rod ( 1 ) is The smooth hemispherical shape makes the top of the support rod (1) and the inner side of the head of the Ti-Al alloy medicine form a point support. 3 . The detection method according to claim 1 , wherein the height of the arc-shaped slide rail ( 21 ) is adjustable, and the bottom end of the arc-shaped slide rail ( 21 ) is placed on the support rod when in use. 4 . (1) The bottom edge of the Ti-Al alloy medicine type cover on the same level. 4 . The detection method according to claim 1 or 3 , wherein the arc-shaped slide rail ( 21 ) is a quarter circle, and the radius of the circle is 15-30 cm. 5 . 5 . The detection method according to claim 1 , wherein the material of the impact ball ( 22 ) is metal; the impact ball ( 22 ) has a density greater than 7.8 g/cm ³ and a diameter of 5 to 5 . 8mm. 6. The detection method according to claim 1, wherein the audio signal acquisition component (3) comprises an acoustic sensor and a data acquisition card.

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