Full-field phase-shifting holographic blind-hole technique for in-plane residual stress detection

1995 ◽  
Author(s):  
Shyh T. Lin ◽  
Chi-Tang J. Hsieh ◽  
Chih-Kung Lee
Keyword(s):  
Residual Stress ◽  
Phase Shifting ◽  
Stress Detection ◽  
Field Phase ◽  
Full Field ◽  
Blind Hole

scholarly journals Visualization of internal structure and internal stress in visibly opaque objects using full-field phase-shifting terahertz digital holography

2019 ◽  
Vol 27 (23) ◽  
pp. 33854 ◽  
Author(s):  
Masatomo Yamagiwa ◽  
Takeo Minamikawa ◽  
Fui Minamiji ◽  
Takahiko Mizuno ◽  
Yu Tokizane ◽  
...  
Keyword(s):  
Internal Stress ◽  
Internal Structure ◽  
Digital Holography ◽  
Phase Shifting ◽  
Field Phase ◽  
Full Field

Quantitative interferometric microscopy with improved full-field phase aberration compensation

2014 ◽  
Vol 53 (11) ◽  
pp. 113105 ◽  
Author(s):  
Liang Xue ◽  
Shouyu Wang ◽  
Keding Yan ◽  
Nan Sun ◽  
Zhenhua Li ◽  
...  
Keyword(s):  
Field Phase ◽  
Phase Aberration ◽  
Full Field

The Effect of Plastic Deformation on the Thermoelastic Constant and the Potential to Evaluate Residual Stress

2011 ◽  
Vol 70 ◽  
pp. 458-463 ◽  
Author(s):  
A. F. Robinson ◽  
Janice M. Dulieu-Barton ◽  
S. Quinn ◽  
R. L. Burguete
Keyword(s):  
Residual Stress ◽  
Plastic Deformation ◽  
Plastic Strain ◽  
Strain Hardening ◽  
Thermoelastic Stress ◽  
Paint Coating ◽  
Full Field ◽  
Thermoelastic Constant ◽  
Thermoelastic Response ◽  
Measured Change

In some metals it has been shown that the introduction of plastic deformation or strain modifies the thermoelastic constant, K. If it was possible to define the magnitude of the change in thermoelastic constant over a range of plastic strain, then the plastic strain that a material has experienced could be established based on a measured change in the thermoelastic constant. This variation of the thermoelastic constant and the ability to estimate the plastic strain that has been experienced, has potential to form the basis of a novel non-destructive, non-contact, full-field technique for residual stress assessment using thermoelastic stress analysis (TSA). Recent research has suggested that the change in thermoelastic constant is related to the material dislocation that occurs during strain hardening, and thus the change in K for a material that does not strain harden would be significantly less than for a material that does. In the work described in this paper, the change in thermoelastic constant for three materials (316L stainless steel, AA2024 and AA7085) with different strain hardening characteristics is investigated. As the change in thermoelastic response due to plastic strain is small, and metallic specimens require a paint coating for TSA, the effects of the paint coating and other test factors on the thermoelastic response have been considered.

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