JP2013181934A - Method and device for inspecting adhesion of reinforced fiber base material for reinforcement to structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To predict a state of an FRP after being adhered to structure to be molded by using a dry reinforced fiber base material to prevent a construction failure resulting from bumpiness of the reinforced fiber base material for reinforcement.SOLUTION: A reinforced fiber base material for reinforcement with a length of 1-7 m is loaded on a flat support with an adhesion device, the support is adhered to the reinforced fiber base material for reinforcement, and occurrence states of wrinkles of the reinforced fiber material for reinforcement are visually inspected to evaluate adhesion to concrete.

Description

  The present invention relates to an inspection method and an inspection apparatus for detecting a construction failure caused by a non-uniform portion called unevenness existing in a reinforcing reinforcing fiber base material before impregnation work, and a dry reinforcing reinforcing fiber base material. Regardless of the inspection, the reinforcing reinforcing fiber base material is impregnated with resin, and a concrete structure or steel structure (hereinafter referred to as a concrete structure or steel structure) is simply a “structure”. The present invention relates to an inspection apparatus and an inspection method capable of predicting the state of FRP after being molded by being bonded to.

  Structures such as bridge piers, tunnels, chimneys and buildings have been required to be reinforced and prevented from peeling off due to deterioration over the years and review of earthquake resistance standards. As a method of reinforcing such a structure, for example, in the case of a floor slab of a road bridge, a fiber reinforced plastic (hereinafter referred to as FRP) including a reinforcing fiber base material (for example, carbon fiber fabric) for reinforcement on the lower surface of the floor slab. The method of adhering is adopted. This method has a high reinforcing effect, excellent durability, and is easy to reinforce, so that it has been widely applied.

  As such a reinforcing method, for example, after the lower surface of the floor slab is first smoothly applied, a primer is applied, a resin as an adhesive is applied thereon, and a reinforcing fiber base is applied, and the reinforcing fiber base is applied. The material is bonded while being impregnated with resin by hand lay-up molding. Here, as the reinforcing fiber base material, in many cases, it is a reinforcement for a portion where a tensile force acts in the length direction, and therefore, a unidirectional fabric in which reinforcing fiber yarns (for example, carbon fiber yarns) are arranged in one direction is used. A high viscosity resin is used in order to prevent frequent dripping of the resin.

  In order to develop the reinforcing effect of the reinforcing reinforcing fiber base material to the original structure, it is necessary to attach and bond the reinforcing reinforcing fiber base material so that there is no gap between the reinforcing reinforcing fiber base material and the structure. There is. The operator applies resin to the base material or impregnates the resin with a roller or spatula. At the same time, the bumps generated on the reinforcing reinforcing fiber base material (when the reinforcing reinforcing fiber base material is placed on a flat surface, This means that the material floats without partially adhering to the surface.) Is guided to the end portion of the reinforcing reinforcing fiber base material, and is expelled from there to prevent the generation of gaps. However, if the reinforcing reinforcing fiber base to be used has a large or large number of irregularities, not all of the irregularities can be expelled and eventually wrinkles and blisters occur.

  At the place where wrinkles and blisters occur, there is a gap between the structure and the reinforcing fiber base material for reinforcement, resulting in a poor appearance. . For this reason, the operator adheres the reinforcing reinforcing fiber base and the structure while paying close attention to preventing wrinkles and blisters, but this work is performed while the resin is fluid. Necessary and skillful work. Here, when the resin is applied and impregnated from above the reinforcing reinforcing fiber base material in order to improve the smoothness of the molded body, the surface of the FRP layer is transparent while the resin is liquid uncured. A method of covering and covering with pressure and smoothing by pressurization and defoaming has been proposed (Patent Document 1). However, if the original reinforcing reinforcing fiber base material is not smooth in such a method, if the reinforcing reinforcing fiber base material is forced to be pressed and smoothed during resin impregnation, the unevenness will not be well removed and the mold will be damaged after molding. It may become.

  In order to prevent this problem, conventionally, once the reinforcing reinforcing fiber base is produced with a length of 5 to 10 m, the reinforcing reinforcing fiber base is once removed from the machine, and the reinforcing reinforcing fiber base is removed. A pass / fail decision is made by looking at the degree of bumpiness (the area of the floating portion, the height, the number of occurrences, etc.) generated in the reinforcing reinforcing fiber base material while being laid on the floor while being drawn to a length of 1 to 7 m. Specifically, it is determined whether or not it is possible to eliminate the unevenness of the base material by hand as in the case of bonding to an actual structure. However, since the base material is not fixed when the bumps are held down by hand, it is difficult to judge whether the bumps have been eliminated by repeating that portion's bumps moving to other parts, and molding was performed. It was difficult to accurately predict the presence or absence of wrinkles and blisters occurring in the later FRP.

  As a substrate inspection apparatus, an image inspection apparatus that performs defect inspection while imaging a surface of an inspection object with a camera in a state where a sheet-like inspection object is vacuum-adsorbed and held on a smooth surface has been proposed. (Patent Document 2). This relates to an inspection apparatus that inspects paper, films, sheet-like displays, and the like, and performs inspection by image processing. According to Patent Document 2, conventionally, an inspection object placed on an inspection plate was fixed by a holding lever or a weight so as not to move during the inspection, but the pressed portion cannot be inspected. The object of the present invention is to improve the inspection accuracy because the entire surface can be inspected by using an apparatus that holds the inspection object by adsorbing it to the inspection plate, and the inspection object is held in a flat state. The inspection contents are not particularly described, and it is determined whether or not a defect such as a dot or a line has occurred in the image as in the conventional apparatus. Therefore, Patent Document 2 is different from the method for inspecting adhesion and unevenness of the base material to the structure, and discloses a method that enables the simulation of when the repair / reinforcement base material is applied. In addition, since the inspection method is an image inspection, the cost for introducing the apparatus is high.

JP 2006-168279 A JP 2004-074420 A

  A method for inspecting a reinforcing fiber base material for reinforcement and an inspection device for expressing excellent mechanical properties after molding into an FRP with good workability, because the above-mentioned problems of the prior art are solved and the structure can be closely adhered. It is to provide at low cost.

  In order to achieve the above object, the present invention is characterized by the following (1) to (9).

  (1) Resin impregnation of reinforcing fiber base material for reinforcement comprising 95% by weight or more of reinforcing fibers having an elongation of less than 3% and having a width of 0.1 to 1.8 m and a length of 1 to 7 m. A method for inspecting workability in a base material state, wherein the base material has a flat surface, and the base material is provided on a support provided with close contact means for bringing the base material into close contact over the entire surface. After the tension applied to the substrate is left to stand, the substrate is brought into close contact with the support member, and when the base material is uneven, the base member is smoothed in the direction of one end in the longitudinal direction. The inspection method which evaluates the adhesiveness to the structure of the reinforcing fiber base material for reinforcement by the number of wrinkles remaining on the base material surface after being used and moved.

  (2) The inspection method according to (1), wherein 95% by weight or more of the reinforcing fibers are composed of reinforcing fibers having a tensile strength of 4,000 MPa or more and a tensile modulus of 200 GPa or more.

  (3) The inspection method according to (1) or (2), wherein the reinforcing reinforcing fiber substrate is any one of a knitted fabric, a woven fabric, and a multiaxial laminated substrate.

  (4) The inspection method according to any one of (1) to (3), wherein the contact means between the support and the reinforcing reinforcing fiber base is a vacuum contact means.

  (5) The inspection method according to any one of (1) to (3), wherein the contact means between the support and the reinforcing reinforcing fiber base is an electrostatic contact means.

  (6) The inspection method according to any one of (1) to (5), wherein the reinforcing fiber is made of any one of carbon fiber, glass fiber, and aramid fiber, or a combination thereof.

  (7) A flat support for placing the reinforcing reinforcing fiber base and holding the base in a flat shape, and an adhesion device for bringing the reinforcing reinforcing fiber base and the support into close contact with each other are provided. Inspection device for reinforcing fiber base for reinforcement.

  (8) The contact device is provided with a plurality of suction holes provided in the support, and includes a suction device that communicates with the suction holes. (7) The reinforcing reinforcing fiber base material inspection device according to (7), which is a vacuum contact device provided with a film for closely contacting the substrate.

  (9) The reinforcing device according to (7), wherein the close contact device includes a static electricity generating device for generating static electricity on the support to bring the reinforcing reinforcing fiber base and the support into close contact with each other. Reinforcing fiber substrate inspection equipment.

  In spite of inspecting a dry reinforcing reinforcing fiber base with the inspecting method and the inspection apparatus of the present invention, the reinforcing reinforcing fiber base is impregnated with a resin and bonded to a structure and then molded. Since the state of the FRP can be predicted, it is possible to prevent a construction failure due to unevenness of the reinforcing reinforcing fiber base material.

It is the schematic which shows one embodiment of the test | inspection method which evaluates the adhesiveness to the structure of the reinforcing fiber base material for reinforcement which has the vacuum contact | adherence means of this invention. It is the schematic which shows a state when the reinforcing fiber base material for reinforcement is stuck on the support body by the contact means. It is the schematic which shows one embodiment of the test | inspection method which evaluates the adhesiveness to the structure of the reinforcing fiber base material for reinforcement which has the electrostatic contact means of this invention. It is the schematic which shows one embodiment of the inspection apparatus of this invention.

  Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic view showing an embodiment of a method for inspecting the adhesion of a reinforcing reinforcing fiber substrate having a vacuum contact means to a structure among the contact means (contact apparatus) of the present invention. As shown in FIG. 1, the reinforcing reinforcing fiber base 1 having a width in the range of 0.1 to 1.8 m is a long and flat support in a state of being unwound in a range of 1 to 7 m from the roll shape. 2, the reinforcing reinforcing fiber substrate 1 and the support 2 are brought into close contact with each other by a close contact means (vacuum contact apparatus) using vacuum.

  In the case of a cut sample that is not wound on a roll, the reinforcing reinforcing fiber substrate is pulled out by one hand, placed on a support without being applied with tension, and allowed to stand, and then supported by a close contact means. Adhere to 2. Moreover, if it is a sample wound up by roll shape, after moving a base material to the position which test | inspects on the support body 2, the tension | tensile_strength concerning a base material will be open | released.

  Thereafter, the irregularity generated in the reinforcing fiber base is guided to the end of the base, and the reinforcing fiber base is brought into close contact with the support while expelling the irregularity therefrom. At this time, as a means for smoothing the base material, the unevenness generated in the reinforcing fiber base material for reinforcement with a soft and slippery spatula that does not damage the reinforcing fiber base material so as not to cause wrinkles in the support is applied to the end of the base material. It is preferable that the reinforcing reinforcing fiber base material is brought into close contact with a flat support while being driven out.

  FIG. 2 shows a state when the reinforcing reinforcing fiber substrate 1 is brought into close contact with the support 2 by means of close contact means (contact device).

  If the reinforcing reinforcing fiber base material is excellent in smoothness, there will be no blurring and it can be in close contact with the support without any gaps. However, as long as the surface of the reinforcing reinforcing fiber base material is inferior in smoothness due to factors such as a difference in yarn length of the reinforcing fiber inherent in the reinforcing reinforcing fiber base material, the base material is smoothed. It is necessary to guide the unevenness of the reinforcing reinforcing fiber base to the edge of the base with a soft and slippery spatula or hand that does not damage the reinforcing fiber base, and to stick it to the support without any gaps while expelling from it. is there. At this time, the reinforcing reinforcing fiber base material is in close contact with the actual structure in the same manner as in the construction in which the reinforcing resin base material is impregnated with liquid resin and adhered. Depending on the quantity, the irregularity may not be successfully expelled, and the irregularity that cannot be resolved eventually becomes 皺 6. Since the state after molding into the FRP can be predicted based on the presence or absence of the wrinkles 6, it is possible to prevent a construction error caused by the unevenness of the reinforcing reinforcing fiber substrate.

  Bokeh that can not be resolved here means that if the substrate on the adhesion device is bumped, it will not be resolved when it is sent to one end of the substrate and sent to the end, forcing these It is defined that it becomes a habit when trying to eliminate it, and it is recommended that one or more irregularities on the inspection device be rejected when determining pass / fail.

  The length for inspecting the reinforcing reinforcing fiber base is appropriately determined according to the size and shape of the structure to be actually constructed, and the length of the inspecting portion of the reinforcing reinforcing fiber base is less than 1 m. The length of the reinforcing fiber base for reinforcing the fiber to expel it becomes larger than the inspection area of the reinforcing fiber base for reinforcing, and it becomes difficult for wrinkles to occur. If the length of the inspection portion of the base material exceeds 7 m, the inspection apparatus becomes large, which is not preferable. From that viewpoint, the range of 2 to 6 m is more preferable. If you want to inspect the entire inspection area of the reinforcing fiber base, it is necessary to make it adhere over the entire surface of the reinforcing reinforcing fiber base, so the length and width of the support must be larger than the inspection area. is there. In addition, the width of the reinforcing reinforcing fiber base material is appropriately determined according to the size and shape of the structure to be constructed in the same manner as the length, but from the handling problem, generally 0.1 to 1.8 m is used. The Usually, when the width is less than 0.1 m, the number of times of bonding the reinforcing reinforcing fiber bases increases, so the workability deteriorates. When the width exceeds 1.8 m, the handling properties deteriorate, and therefore the reinforcing reinforcing fiber bases Is preferably in the range of 0.1 to 1.8 m, more preferably 0.3 to 1.2 m. In the actual use of the reinforcing reinforcing fiber substrate, the reinforcing reinforcing fiber substrate is used by being appropriately cut according to the size and shape of the structure to be constructed.

  Reinforcing fibers constituting the reinforcing reinforcing fiber substrate to be inspected according to the present invention use those having an elongation of less than 3% by weight of 95% or more. Since the elongation of the reinforcing fiber, which is the main raw material, is low, it is difficult to absorb wrinkles due to expansion and contraction, and there is a problem that wrinkles are likely to occur. Therefore, the inspection method of the present invention is necessary.

  In addition, the reinforcing fiber constituting the reinforcing reinforcing fiber base material to be inspected according to the present invention, the weight of which is 95% by weight or more and having an elongation of less than 3%, has a tensile strength of 4,000 MPa or more and a tensile modulus. 200 GPa or more is preferable in order to express the reinforcing effect of the structure which is the object of the reinforcing fiber base material for reinforcement of the present invention.

  As an example of the embodiment of the present invention, a suction device 4 is provided as a method for vacuum-adhering the reinforcing reinforcing fiber substrate and the support as shown in FIG. 1, and a plurality of them are provided on the smooth surface of the support. The reinforcing reinforcing fiber substrate 1 and the support 2 are brought into vacuum contact with each other through the suction holes. The size and spacing of the suction holes are set so that when the base material is sucked, suction spots do not occur and are evenly and smoothly adhered, for example, 2,500 to 25 in a 10 cm square. One in which 1,000 holes are arranged in a honeycomb shape is used.

  When the reinforcing fiber base material 1 for supporting and reinforcing the air permeability is high, when air leakage occurs and adhesion by vacuum cannot be performed well, the reinforcing reinforcing fiber substrate 1 disposed on the support 2 is used. The reinforcing reinforcing fiber substrate and the support can be brought into close contact with each other by covering the cover film 3 with low air permeability.

  FIG. 3 is a schematic view showing one embodiment of a method for inspecting the smoothness of a reinforcing reinforcing fiber substrate having an electrostatic contact means (electrostatic contact apparatus) in the contact means (contact apparatus) of the present invention. As shown in FIG. 2, the reinforcing reinforcing fiber base 1 having a width in the range of 0.1 to 1.8 m is a long and flat support in a state of being unwound in a range of 1 to 7 m from the roll shape. 2, the reinforcing reinforcing fiber base 1 and the support 2 are brought into close contact with each other by means of static electricity generated by the static electricity generator 7. By bringing the reinforcing reinforcing fiber substrate 1 and the support 2 into close contact with each other by the contact means, it is possible to create a pseudo FRP state after being bonded to concrete and molded.

  Various types of reinforcing fiber base materials for reinforcement to be inspected according to the present invention can be used, but usually, the workability of the reinforcing fibers into the base material, the handleability of the base material, and the FRP after molding From the viewpoint of mechanical properties, it is either a knitted fabric, a woven fabric, or a multiaxial laminated substrate. Among them, woven fabrics or multiaxial laminated base materials that are excellent in straightness of reinforcing fibers and exhibit excellent mechanical properties are often used, and unidirectional fabrics are the most preferable because they provide excellent handling properties and resin impregnation properties. It is often used and is also suitable as an inspection object of the present invention.

  Here, the “one-way woven fabric” in the present specification refers to a woven fabric made of, for example, warp yarns arranged in the warp direction made of carbon fibers, and the weft yarns arranged in the weft direction made of fiber yarns for maintaining the shape of the warp yarn. means. The weft yarn is also called an auxiliary yarn and may be made of any fiber as long as the warp yarn is not loosened. In a unidirectional fabric, the warp yarns are arranged more densely than the weft yarns, that is, the weft density of the warp yarns is greater than the weave density of the weft yarns, and the fineness of the weft yarns is less than the fineness of the warp yarns.

  When the unidirectional fabric contains a heat-fusible resin in the weft yarn, the heat-fusible resin is melted and the weft yarn and the warp yarn are fixed at the crossing portion to improve the shape stability. Therefore, it is preferable because the handleability can be improved.

  The unidirectional woven fabric is a woven fabric in which warp yarns and weft yarns are interlaced, and the weave structure is not particularly limited, such as a twill structure or a satin structure. However, compared to a normal woven fabric, this unidirectional woven fabric has a larger interval between wefts and is easily misaligned, so a plain weave structure is preferably used from the viewpoint of form stability.

Further, the basis weight of the reinforcing fibers of the unidirectional woven fabric is usually in the range of 180 to 1,000 g / cm ² from the viewpoint of handling property during construction and resin impregnation.

  For the sake of convenience, the method for inspecting a reinforcing reinforcing fiber substrate will be described using an example in which the reinforcing reinforcing fiber substrate is a reinforcing fiber fabric. However, the form of the reinforcing reinforcing fiber substrate in the present invention is not limited to this. Absent.

  Since the reinforcing fiber constituting the reinforcing fiber fabric to be inspected according to the present invention uses 95% by weight or more of an elongation of less than 3% as described above, the reinforcing fiber itself has a low degree of freedom for deformation. If the reinforcing fiber fabric has a large or large number of irregularities, all of the irregularities cannot be eliminated and eventually wrinkles are generated. In particular, in the case of a woven fabric that uses a sealing agent to provide form stability, even if it is relatively lightly uneven due to high form stability, it is necessary to smooth the substrate. It becomes difficult to move the bumps away. Even when such a reinforcing fiber fabric is bonded to a structure, wrinkles and blisters caused by the unevenness of the reinforcing fiber fabric are generated. Therefore, the reinforcing fiber fabric is treated as a failure, and immediately, without further production. The weaving conditions are adjusted to suppress the unevenness of the reinforcing fiber fabric. For example, the unevenness is eliminated by a method of equalizing the warp thread tension by adjusting the brake of the creel. In this way, the inspection and adjustment are repeated until no wrinkles occur, and the product is woven under conditions that pass.

Moreover, the inspection method in the case of carrying out a shipping inspection of the reinforced fiber fabric completed as a product is demonstrated as another aspect. Usually, the reinforcing fiber fabric is often in the form of a roll. Since the reinforcing fiber fabric wound in a roll shape is a product before delivery to a user as a product, it is preferable to ship the roll fiber without cutting in the length direction. In that sense, it is preferable that the inspection apparatus is provided with a roll unwinding device 8 and a roll winding device 9 shown in FIG. Note that the roll unwinding device does not necessarily require a device that actively feeds to the take-up side, but in order to prevent problems caused by insufficient tension such as roll collapse, A brake device is preferably installed. For example, when it is desired to inspect a reinforcing fiber woven fabric wound in a roll shape every 20 m, after inspecting the first 0 m portion, the length is measured by a length measuring device and taken up every 20 m by a winding device. Since the part to be inspected needs to be in close contact with the support in a state in which substantially no tension is applied to the base material, the tension is temporarily released with the unwinding side or the winding side as the free end. is necessary.
In addition, when the inspection is performed by the above-described inspection method, the winding side is provided with a meandering prevention device for preventing the roll from becoming wrinkled due to meandering during winding of the reinforcing fiber fabric. It is preferable in keeping. The meandering prevention device is not particularly limited. For example, an edge sensor for detecting the width end portion position of the reinforcing fiber fabric, and a roll unwinding device based on the detection position of the width end portion of the reinforcing fiber fabric by the edge sensor. A method of controlling the position in the width direction of the reinforcing fiber fabric by sliding left and right is generally known.

  The inspection method of the present invention is mainly intended for the initial condition examination for determining the production conditions for preventing wrinkles of the reinforcing reinforcing fiber base and the pre-shipment inspection after the production. Because the inspection is carried out by bringing it into close contact with the support, even if the reinforcing reinforcing fiber substrate is unwound by the roll unwinding device and the winding device, the reinforcing reinforcing fiber substrate is completely stationary during the inspection. It becomes offline inspection.

  Since the reinforcing fiber used for the reinforcing reinforcing fiber substrate of the present invention is intended to reinforce the structure, one of carbon fiber, glass fiber, and aramid fiber excellent in specific strength and specific elastic modulus, Alternatively, it is preferable to use a combination of them, and carbon fiber is particularly preferable because of its excellent specific strength and specific elastic modulus.

  Preferable carbon fibers are pitch-based carbon fibers and polyacrylonitrile-based carbon fibers, and preferred warp yarns used in the present invention are tow-shaped yarns in which 6,000 to 48,000 carbon fiber filaments are arranged in parallel. The tensile strength is preferably 4,000 MPa or more, preferably 4,500 MPa to 5,500 MPa, and the tensile modulus is 200 GPa to 1,000 GPa, preferably 220 GPa to 550 GPa. Further, the warp yarn is preferably substantially untwisted in order to obtain a woven fabric having high smoothness and good quality.

  According to the method for inspecting a reinforcing reinforcing fiber substrate of the present invention, the state of the FRP after the reinforcing fiber is impregnated with a liquid resin and bonded to the structure is formed despite the dry reinforcing reinforcing fiber substrate. Since it can be predicted, it is possible to prevent a construction error caused by unevenness of the reinforcing fiber base material for reinforcement.

1: Reinforcing fiber base material 2: Support body 3: Cover film 4: Suction device 5: Bokeh 6: Spear 7: Static electricity generator 8: Roll unwinding device 9: Roll winding device

Claims (9)

More than 95% by weight of the total is composed of reinforcing fibers having an elongation of less than 3%, and the resin impregnating workability of the reinforcing reinforcing fiber base having a width of 0.1 to 1.8 m and a length of 1 to 7 m. A method of inspecting in the state of a substrate, wherein the surface of the substrate is flat, and the tension applied to the substrate on a support having an adhesion means for bringing the substrate into close contact over the entire surface. Is opened and allowed to stand, and is then brought into close contact with the support by means of close contact, and if the base material is uneven, use the base material smoothing means in the direction of one end in the longitudinal direction. An inspection method for evaluating the adhesion of the reinforcing reinforcing fiber substrate to the structure by the number of wrinkles remaining on the substrate surface after being moved. The inspection method according to claim 1, wherein 95% by weight or more of the total reinforcing fibers are composed of reinforcing fibers having a tensile strength of 4,000 MPa or more and a tensile modulus of 200 GPa or more. The inspection method according to claim 1 or 2, wherein the reinforcing reinforcing fiber substrate is any one of a knitted fabric, a woven fabric, and a multiaxial laminated substrate. The test | inspection method in any one of Claims 1-3 whose contact | adherence means of a support body and the reinforcing fiber base material for reinforcement is a vacuum contact | adherence means. The test | inspection method of Claims 1-3 whose contact | adherence means of a support body and the reinforcing fiber base material for reinforcement is an electrostatic contact | adherence means. The inspection method according to any one of claims 1 to 5, wherein the reinforcing fiber is made of any one of carbon fiber, glass fiber, and aramid fiber, or a combination thereof. A reinforcing support including a flat support for placing the reinforcing reinforcing fiber base and holding the base in a flat shape, and an adhesion device for bringing the reinforcing reinforcing fiber base and the support into close contact with each other Reinforcing fiber substrate inspection equipment. The contact device is provided with a plurality of suction holes provided in the support, and includes a suction device that communicates with the suction holes, and closes the ventilation and closes the reinforcing reinforcing fiber base and the support. The reinforcement | strengthening reinforcement fiber base material inspection apparatus of Claim 7 which is a vacuum contact | adherence apparatus provided with the film for this. The reinforcing reinforcing fiber base according to claim 7, wherein the close contact device includes a static electricity generating device for generating static electricity on the support to bring the reinforcing reinforcing fiber base and the support into close contact. Material inspection equipment.