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Phase-stepped ESPI and moiré interferometry for measuring stress-intensity factor andJ integral |
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| Authors: | A J Moore J R Tyrer |
| Institution: | (1) Centro de Investigaciones en Optica A.C., Apdo. Postal I-948, CP 37000 Leon, Guanajuato, Mexico;(2) Department of Mechanical Engineering, Loughborough University of Technology, LE11 3TU Loughborough, Leics, UK |
| Abstract: | Electronic-speckle-pattern interferometry and moiré interferometry have been used to calculateK 1 andJ for compact tension specimens. Automated-fringe-pattern analysis enables the full-field of data to be used with the minimum of operator intervention. Measurements are shown to be accurate to within 10 percent. TheJ-measurement procedure employed could form the basis of an automatic-fault detection system. |
| Keywords: | fracture mechanics interferometry: electronic recording moiré interferometry |
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