FR2416452A2 - Non-destructive testing of deformable structure - by subjecting structure to light beam transmitted by optical cable from laser source via separator - Google Patents

Non-destructive testing of deformable structure - by subjecting structure to light beam transmitted by optical cable from laser source via separator

Info

Publication number
FR2416452A2
FR2416452A2 FR7803094A FR7803094A FR2416452A2 FR 2416452 A2 FR2416452 A2 FR 2416452A2 FR 7803094 A FR7803094 A FR 7803094A FR 7803094 A FR7803094 A FR 7803094A FR 2416452 A2 FR2416452 A2 FR 2416452A2
Authority
FR
France
Prior art keywords
optical cable
light beam
laser source
source via
destructive testing
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.)
Granted
Application number
FR7803094A
Other languages
French (fr)
Other versions
FR2416452B2 (en
Inventor
Jean-Pierre Huignard
Jean-Pierre Herriau
Jean-Luc Bruneel
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.)
Thales SA
Original Assignee
Thomson CSF SA
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
Priority claimed from FR7708627A external-priority patent/FR2385079A1/en
Application filed by Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR7803094A priority Critical patent/FR2416452A2/en
Publication of FR2416452A2 publication Critical patent/FR2416452A2/en
Application granted granted Critical
Publication of FR2416452B2 publication Critical patent/FR2416452B2/fr
Granted legal-status Critical Current

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
    • G01B9/021—Interferometers using holographic techniques

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Holo Graphy (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

In industry non-destructive tests are performed on deformable structures submitted to strain. Tests are performed by observation by holographic interferometry. The object (1) to be tested is subjected to light beam (2) transmitted by optical cable (36) from a laser source (3) via a separator (16). Radiation is diffracted and light is received by a photoconductor (7) to which voltage is applied. Part of light from the source is focussed (35) onto an optical cable (37) carrying light to a mirror (200). A separator (21) permits formation of image at memory tube (15). A polariser (P) is orientated to isolate image from optical noise effects.
FR7803094A 1977-03-23 1978-02-03 Non-destructive testing of deformable structure - by subjecting structure to light beam transmitted by optical cable from laser source via separator Granted FR2416452A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7803094A FR2416452A2 (en) 1977-03-23 1978-02-03 Non-destructive testing of deformable structure - by subjecting structure to light beam transmitted by optical cable from laser source via separator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7708627A FR2385079A1 (en) 1977-03-23 1977-03-23 VISUALIZATION DEVICE, BY HOLOGRAPHIC INTERFEROMETRY, OF DEFORMATIONS OF DEFORMABLE STRUCTURES
FR7803094A FR2416452A2 (en) 1977-03-23 1978-02-03 Non-destructive testing of deformable structure - by subjecting structure to light beam transmitted by optical cable from laser source via separator

Publications (2)

Publication Number Publication Date
FR2416452A2 true FR2416452A2 (en) 1979-08-31
FR2416452B2 FR2416452B2 (en) 1982-01-22

Family

ID=26219925

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7803094A Granted FR2416452A2 (en) 1977-03-23 1978-02-03 Non-destructive testing of deformable structure - by subjecting structure to light beam transmitted by optical cable from laser source via separator

Country Status (1)

Country Link
FR (1) FR2416452A2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0053052A1 (en) * 1980-11-25 1982-06-02 Thomson-Csf Interferometric device for the real-time visualization of deformations of vibrating structures
FR2516232A1 (en) * 1981-11-09 1983-05-13 Thomson Csf MICHELSON TYPE INTERFEROMETER WITH PHOTOREFRACTIVE MIRROR
DE3718327A1 (en) * 1987-06-01 1988-12-22 Rottenkolber Holo System Gmbh Device for carrying out holographic interferometry
US6522409B1 (en) 1999-10-29 2003-02-18 Holotech As Method and device for non-destructive inspection of objects by means of optical holographic interferometry

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2061853A5 (en) * 1969-07-09 1971-06-25 Thomson Csf
US3604777A (en) * 1969-10-21 1971-09-14 Ibm Return beam holography
FR2098396A1 (en) * 1970-07-14 1972-03-10 Philips Nv
DE2507828A1 (en) * 1975-02-24 1976-09-02 Detlev Dipl Ing Hadbawnik Endoscopic halographic exposure production system - has laser light fed to endoscope head by monomode filament and split into reference and illuminating beams
DE2620755A1 (en) * 1976-05-11 1977-11-17 Dornier System Gmbh Reconstructed double hologram interferogram - uses double impulse laser read alongside photograph in medical applications
GB1505894A (en) * 1976-05-28 1978-03-30 Atomic Energy Authority Uk Laser equipment

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2061853A5 (en) * 1969-07-09 1971-06-25 Thomson Csf
US3604777A (en) * 1969-10-21 1971-09-14 Ibm Return beam holography
FR2098396A1 (en) * 1970-07-14 1972-03-10 Philips Nv
DE2507828A1 (en) * 1975-02-24 1976-09-02 Detlev Dipl Ing Hadbawnik Endoscopic halographic exposure production system - has laser light fed to endoscope head by monomode filament and split into reference and illuminating beams
DE2620755A1 (en) * 1976-05-11 1977-11-17 Dornier System Gmbh Reconstructed double hologram interferogram - uses double impulse laser read alongside photograph in medical applications
GB1505894A (en) * 1976-05-28 1978-03-30 Atomic Energy Authority Uk Laser equipment

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0053052A1 (en) * 1980-11-25 1982-06-02 Thomson-Csf Interferometric device for the real-time visualization of deformations of vibrating structures
US4492468A (en) * 1980-11-25 1985-01-08 Thomson-Csf Interferometer for the real time display of deformations of vibrating structures
FR2516232A1 (en) * 1981-11-09 1983-05-13 Thomson Csf MICHELSON TYPE INTERFEROMETER WITH PHOTOREFRACTIVE MIRROR
EP0079268A1 (en) * 1981-11-09 1983-05-18 Thomson-Csf Michelson-type interferometer with a photo-refractive mirror
US4571080A (en) * 1981-11-09 1986-02-18 Thomson-Csf Michelson interferometer with a photorefractive mirror
DE3718327A1 (en) * 1987-06-01 1988-12-22 Rottenkolber Holo System Gmbh Device for carrying out holographic interferometry
US6522409B1 (en) 1999-10-29 2003-02-18 Holotech As Method and device for non-destructive inspection of objects by means of optical holographic interferometry

Also Published As

Publication number Publication date
FR2416452B2 (en) 1982-01-22

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