NO20005376L - Fremgangsmåte og innretning for ikke-destruktive målinger av egenspenninger i plane og ikke-plane objekter - Google Patents
Fremgangsmåte og innretning for ikke-destruktive målinger av egenspenninger i plane og ikke-plane objekterInfo
- Publication number
- NO20005376L NO20005376L NO20005376A NO20005376A NO20005376L NO 20005376 L NO20005376 L NO 20005376L NO 20005376 A NO20005376 A NO 20005376A NO 20005376 A NO20005376 A NO 20005376A NO 20005376 L NO20005376 L NO 20005376L
- Authority
- NO
- Norway
- Prior art keywords
- holographic
- probe
- investigation area
- coherent light
- plane
- Prior art date
Links
- 230000001066 destructive effect Effects 0.000 title abstract 3
- 238000005259 measurement Methods 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 3
- 238000011835 investigation Methods 0.000 abstract 5
- 239000000523 sample Substances 0.000 abstract 5
- 230000001427 coherent effect Effects 0.000 abstract 4
- 230000015572 biosynthetic process Effects 0.000 abstract 2
- 238000005210 holographic interferometry Methods 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
-
- 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
- G01B11/164—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 holographic 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
- G01B9/021—Interferometers using holographic techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0047—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes measuring forces due to residual stresses
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Holo Graphy (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
This invention relates to a method and device for performing non-destructive measurements of residual stresses in an investigation area of an object based on use of optical holographic interferometry technique. The holographic interferometer is divided into a holographic probe which contains means for illuminating the investigation area of the object by coherent light, collecting the coherent light that scatters off this investigation area and means for performing a non- destructive dislocation release pulse of the residual stresses in a small region of the investigation area by exposing the object to an electric high currency, and a holographic camera which contains means for formation, registration, and development of a hologram and for formation of an interferogram of the investigation area of the object. The object coherent light is sent from the light source to the probe by a single-mode light guidance cable, from the probe to the holographic camera by an other single-mode light guidance cable, and the reference coherent light from the light source to the holographic camera in a third single-mode light guidance cable. In this way, one is allowed to measure residual stresses on surfaces of an object with high curvatures, in hardly accessible places, and under many weather conditions by a simple hand-held manual positioning of the holographic probe during the measurements.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20005376A NO20005376L (no) | 2000-10-25 | 2000-10-25 | Fremgangsmåte og innretning for ikke-destruktive målinger av egenspenninger i plane og ikke-plane objekter |
US09/717,306 US6765677B1 (en) | 2000-10-25 | 2000-11-22 | Method and device for non-destructive real-time measurements of residual stresses in planar and non-planar objects |
PCT/NO2001/000424 WO2002035180A1 (en) | 2000-10-25 | 2001-10-23 | Method and device for non-destructive real-time measurements of residual stresses in planar and non-planar objects |
EP01981178A EP1337804A1 (en) | 2000-10-25 | 2001-10-23 | Method and device for non-destructive real-time measurements of residual stresses in planar and non-planar objects |
AU2002212837A AU2002212837A1 (en) | 2000-10-25 | 2001-10-23 | Method and device for non-destructive real-time measurements of residual stresses in planar and non-planar objects |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20005376A NO20005376L (no) | 2000-10-25 | 2000-10-25 | Fremgangsmåte og innretning for ikke-destruktive målinger av egenspenninger i plane og ikke-plane objekter |
Publications (2)
Publication Number | Publication Date |
---|---|
NO20005376D0 NO20005376D0 (no) | 2000-10-25 |
NO20005376L true NO20005376L (no) | 2002-04-26 |
Family
ID=19911722
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO20005376A NO20005376L (no) | 2000-10-25 | 2000-10-25 | Fremgangsmåte og innretning for ikke-destruktive målinger av egenspenninger i plane og ikke-plane objekter |
Country Status (5)
Country | Link |
---|---|
US (1) | US6765677B1 (no) |
EP (1) | EP1337804A1 (no) |
AU (1) | AU2002212837A1 (no) |
NO (1) | NO20005376L (no) |
WO (1) | WO2002035180A1 (no) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO20002948L (no) * | 2000-06-08 | 2001-12-10 | Holo Tech As | Fremgangsmåte og anordning for registrering av hologrammer på amorfe molekyl¶re halvlederfilmer |
SE0300666D0 (sv) * | 2003-03-10 | 2003-03-10 | Faahraeus Holographic Technolo | Stress measurement |
CN101251472B (zh) * | 2008-03-19 | 2010-06-02 | 中国科学院上海光学精密机械研究所 | 双光束在线实时测量光学薄膜应力的装置及其测量方法 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3960448A (en) | 1975-06-09 | 1976-06-01 | Trw Inc. | Holographic instrument for measuring stress in a borehole wall |
FR2593288B1 (fr) | 1986-01-20 | 1989-09-01 | Aerospatiale | Dispositif de controle non-destructif d'une piece par holographie optique |
US5339152A (en) | 1992-04-24 | 1994-08-16 | Grumman Aerospace Corporation | Holographic inspection system with integral stress inducer |
US6094260A (en) * | 1998-08-12 | 2000-07-25 | General Electric Company | Holographic interferometry for monitoring and controlling laser shock peening |
NO20002601L (no) | 1999-10-29 | 2001-04-30 | Holo Tech As | Metode og utstyr for ikke-destruktiv bestemmelse av restspenninger gjennom optisk holografisk interferometer teknikk |
NO20002724L (no) | 1999-10-29 | 2001-04-30 | Holo Tech As | Metode og utstyr for ikke-destruktiv inspeksjon av objekter basert på halografisk interferometri |
NO995311D0 (no) * | 1999-10-29 | 1999-10-29 | Holo Tech As | FremgangsmÕte og anordning for ikke-destruktiv inspeksjon av objekter ved hjelp av optisk holografisk interferometer |
-
2000
- 2000-10-25 NO NO20005376A patent/NO20005376L/no not_active Application Discontinuation
- 2000-11-22 US US09/717,306 patent/US6765677B1/en not_active Expired - Fee Related
-
2001
- 2001-10-23 WO PCT/NO2001/000424 patent/WO2002035180A1/en active Application Filing
- 2001-10-23 AU AU2002212837A patent/AU2002212837A1/en not_active Abandoned
- 2001-10-23 EP EP01981178A patent/EP1337804A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
AU2002212837A1 (en) | 2002-05-06 |
US6765677B1 (en) | 2004-07-20 |
WO2002035180A1 (en) | 2002-05-02 |
EP1337804A1 (en) | 2003-08-27 |
NO20005376D0 (no) | 2000-10-25 |
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Legal Events
Date | Code | Title | Description |
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FC2A | Withdrawal, rejection or dismissal of laid open patent application |