Stress Dependence on Relaxation of Deformation Induced by Laser Spot Heating

• Published in: Materials Vol. 15; no. 18; p. 6330
• Main Authors: Murata, Yuma, Sasaki, Tomohiro, Yoshida, Sanichiro
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 13.09.2022; MDPI
• Subjects: Alloys; Aluminum base alloys; Analysis; Cameras; Contact stresses; Deformation; Evaluation; Heat; Infrared heating; Infrared lasers; Interferometry; Investigations; Laser beam heating; Lasers; Measurement techniques; Nondestructive testing; Residual stress; Room temperature; Speckle patterns; Strain gauges; Stress analysis; Stress relaxation; Tensile stress; Tensile tests; Thermal expansion; Thermal properties; Visualization; residual stress; optical interferometry; thermal expansion; elasticity; non-destructive testing

This paper deals with a non-destructive analysis of residual stress through the visualization of deformation behaviors induced by a local spot heating. Deformation was applied to the surface of an aluminum alloy with an infrared spot laser. The heating process is non-contact, and the applied strain...