CA2413098C - Detecteur insensible a la temperature permettant de mesurer le couple et la contrainte des fibres optiques - Google Patents
Detecteur insensible a la temperature permettant de mesurer le couple et la contrainte des fibres optiques Download PDFInfo
- Publication number
- CA2413098C CA2413098C CA002413098A CA2413098A CA2413098C CA 2413098 C CA2413098 C CA 2413098C CA 002413098 A CA002413098 A CA 002413098A CA 2413098 A CA2413098 A CA 2413098A CA 2413098 C CA2413098 C CA 2413098C
- Authority
- CA
- Canada
- Prior art keywords
- strain
- polarized light
- sensitive material
- workpiece
- selectively
- 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.)
- Expired - Lifetime
Links
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- 230000010363 phase shift Effects 0.000 claims description 4
- 238000012360 testing method Methods 0.000 abstract description 27
- 230000035945 sensitivity Effects 0.000 abstract description 21
- 238000005259 measurement Methods 0.000 abstract description 14
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- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
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Classifications
-
- 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
- G01B11/168—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge by means of polarisation
-
- 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
- G01B11/18—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge using photoelastic elements
-
- 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
- G01L1/241—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 by photoelastic stress analysis
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
L'invention concerne un modèle simple de capteur de contrainte polarimétrique extrinsèque insensible à la température. L'élément capteur est une mince feuille de matériau photoélastique liée à l'objet testé, que l'on illumine avec de la lumière à polarisation linéaire, selon une direction de polarisation inclinée à 45 degrés par rapport aux axes rapide et lent induits par la contrainte dans le matériau photoélastique. Le capteur mesure la différence entre les contraintes dans ces deux directions orthogonales. La sensibilité réduite du capteur à la température vient du fait que l'illumination est perpendiculaire à la surface de l'objet. Toutes les composantes de polarisation parallèles à la surface subissent des modifications d'indice de réfraction identiques en raison des effets thermiques. La mesure de la différence de contrainte suivant deux directions dans le plan de la surface est donc insensible à la température.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002413098A CA2413098C (fr) | 2002-11-27 | 2002-11-27 | Detecteur insensible a la temperature permettant de mesurer le couple et la contrainte des fibres optiques |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002413098A CA2413098C (fr) | 2002-11-27 | 2002-11-27 | Detecteur insensible a la temperature permettant de mesurer le couple et la contrainte des fibres optiques |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2413098A1 CA2413098A1 (fr) | 2004-05-27 |
| CA2413098C true CA2413098C (fr) | 2010-01-05 |
Family
ID=32476974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002413098A Expired - Lifetime CA2413098C (fr) | 2002-11-27 | 2002-11-27 | Detecteur insensible a la temperature permettant de mesurer le couple et la contrainte des fibres optiques |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2413098C (fr) |
-
2002
- 2002-11-27 CA CA002413098A patent/CA2413098C/fr not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2413098A1 (fr) | 2004-05-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20221128 |