OUT-OF-PLANE ESPI TECHNIQUE FOR MEASURING BULGE DEORMATION |
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| Y.-H. Huh, D. I. Kim, S. G. Hong |
- Abstract:
- Out-of-plane ESPI ESPI (Electronic Speckle Pattern Interferometric) technique was developed for measuring the bulge deformation of the film material obtained from the bulge test. In this study, the bulge test was carried out using the copper film 18 ìm thick and with the bulge testing system including the ESPI system. It can be verified that the 3-dimensional profiles of the deformation measured for the rectangular and square windows were simulated with the cylindrical and spherical vessel models, respectively. From the test, pressure-deformation curve were obtained by consequently acquiring the speckle patterns of the bulged membrane. Furthermore, the stress-strain curve could be determined from the pressure-deformation curve and the elastic modulus for the copper film were determined.
- Keywords:
- out-of-plane ESPI, thin film material, bulge test, membrane window, mechanical properties
- Download:
- IMEKO-WC-2012-TC15-P1.pdf
- DOI:
- -
- Event details
- Event name:
- XX IMEKO World Congress
- Title:
Metrology for Green Growth
- Place:
- Busan, REPUBLIC of KOREA
- Time:
- 09 September 2012 - 12 September 2012