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GB2608413B - Spatial-phase-shift shearography system - Google Patents

Spatial-phase-shift shearography system Download PDF

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Publication number
GB2608413B
GB2608413B GB2109462.8A GB202109462A GB2608413B GB 2608413 B GB2608413 B GB 2608413B GB 202109462 A GB202109462 A GB 202109462A GB 2608413 B GB2608413 B GB 2608413B
Authority
GB
United Kingdom
Prior art keywords
spatial
shift
phase
shearography system
shearography
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
GB2109462.8A
Other versions
GB2608413A (en
GB202109462D0 (en
Inventor
Gao Jianxin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Front Technologies Ltd
Original Assignee
Front Technologies Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Front Technologies Ltd filed Critical Front Technologies Ltd
Priority to GB2109462.8A priority Critical patent/GB2608413B/en
Publication of GB202109462D0 publication Critical patent/GB202109462D0/en
Publication of GB2608413A publication Critical patent/GB2608413A/en
Application granted granted Critical
Publication of GB2608413B publication Critical patent/GB2608413B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B9/00—Measuring instruments characterised by the use of optical techniques
    • G01B9/02—Interferometers
    • G01B9/02097—Self-interferometers
    • G01B9/02098—Shearing interferometers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
    • G01B11/161—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge by interferometric means
    • G01B11/162—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge by interferometric means by speckle- or shearing interferometry
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B9/00—Measuring instruments characterised by the use of optical techniques
    • G01B9/02—Interferometers
    • G01B9/02015—Interferometers characterised by the beam path configuration
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B9/00—Measuring instruments characterised by the use of optical techniques
    • G01B9/02—Interferometers
    • G01B9/02015—Interferometers characterised by the beam path configuration
    • G01B9/02027—Two or more interferometric channels or interferometers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B9/00—Measuring instruments characterised by the use of optical techniques
    • G01B9/02—Interferometers
    • G01B9/02015—Interferometers characterised by the beam path configuration
    • G01B9/02032—Interferometers characterised by the beam path configuration generating a spatial carrier frequency, e.g. by creating lateral or angular offset between reference and object beam
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B9/00—Measuring instruments characterised by the use of optical techniques
    • G01B9/02—Interferometers
    • G01B9/02055—Reduction or prevention of errors; Testing; Calibration
    • G01B9/02075—Reduction or prevention of errors; Testing; Calibration of particular errors
    • G01B9/02078—Caused by ambiguity
    • G01B9/02079—Quadrature detection, i.e. detecting relatively phase-shifted signals
    • G01B9/02081—Quadrature detection, i.e. detecting relatively phase-shifted signals simultaneous quadrature detection, e.g. by spatial phase shifting
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
    • G02B27/283—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for beam splitting or combining
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B2290/00—Aspects of interferometers not specifically covered by any group under G01B9/02
    • G01B2290/70—Using polarization in the interferometer
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B9/00—Measuring instruments characterised by the use of optical techniques
    • G01B9/02—Interferometers
    • G01B9/02055—Reduction or prevention of errors; Testing; Calibration

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Holo Graphy (AREA)
GB2109462.8A 2021-06-30 2021-06-30 Spatial-phase-shift shearography system Active GB2608413B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2109462.8A GB2608413B (en) 2021-06-30 2021-06-30 Spatial-phase-shift shearography system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2109462.8A GB2608413B (en) 2021-06-30 2021-06-30 Spatial-phase-shift shearography system

Publications (3)

Publication Number Publication Date
GB202109462D0 GB202109462D0 (en) 2021-08-11
GB2608413A GB2608413A (en) 2023-01-04
GB2608413B true GB2608413B (en) 2024-08-07

Family

ID=77179669

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2109462.8A Active GB2608413B (en) 2021-06-30 2021-06-30 Spatial-phase-shift shearography system

Country Status (1)

Country Link
GB (1) GB2608413B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114323312B (en) * 2021-12-17 2024-01-26 西安工业大学 A device and method for realizing synchronous four-wave transverse shear interferometry

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6108131A (en) * 1998-05-14 2000-08-22 Moxtek Polarizer apparatus for producing a generally polarized beam of light
US20070211256A1 (en) * 2003-08-28 2007-09-13 4D Technology Corporation Linear-carrier phase-mask interferometer
DE102019103814B3 (en) * 2019-02-14 2020-07-02 Hochschule Trier - Trier University of Applied Sciences Device for optically measuring a surface

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6108131A (en) * 1998-05-14 2000-08-22 Moxtek Polarizer apparatus for producing a generally polarized beam of light
US20070211256A1 (en) * 2003-08-28 2007-09-13 4D Technology Corporation Linear-carrier phase-mask interferometer
DE102019103814B3 (en) * 2019-02-14 2020-07-02 Hochschule Trier - Trier University of Applied Sciences Device for optically measuring a surface

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MATERIALS SCIENCE AND ENGINEERING, vol 49, 2005, HUNG Y Y ET AL, "Shearogrphy: An optical measurement technique and applications", pages 61-87 *

Also Published As

Publication number Publication date
GB2608413A (en) 2023-01-04
GB202109462D0 (en) 2021-08-11

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