Method for extracting order value of coherent gradient sensing interference fringe |
Title： |
| Method for extracting order value of coherent gradient sensing interference fringe |
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Application Number： |
200610001365 |
Application Date： |
2006/01/20 |
Announcement Date： |
2006/07/12 |
Pub. Date： |
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Publication Number： |
1800834 |
Announcement Number： |
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Grant Date： |
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Granted Pub. Date： |
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ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
G01N 21/88, G01J 3/45, G01B 11/16 |
Applicant(s)： |
Tsinghua University |
Inventor(s)： |
Xu Wei, Yao Xuefeng, Liu Dongliang |
Key Words： |
extract, coherent gradient, sensing interference fringe, order value |
Abstract： |
The invention relates to a method to extract the coherent gradient sensitive interference fringe level number in fracture mechanics. Wherein, before loading, shooting the test piece to obtain the background light intensity a; shooting two figures of coherent gradient sensitive interference fringe for the test piece on load of P1 and P2 and obtaining the light intensity as I1 and I2; calculating the fringe level number ml of one figure. This invention can improve the calculation accuracy obviously with simple device. |
Claim： |
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Priority： |
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PCT： |
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