PSI - Issue 53

Reza Ahmadi et al. / Procedia Structural Integrity 53 (2024) 97–111 Author name / Structural Integrity Procedia 00 (2019) 000–000

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behaviour throughout testing, affording a comprehensive understanding of energy storage, micro-damage initiation, and ultimate failure mechanisms. Temperature trend and stress trend curves for the three series of specimens are depicted in the following figures. For the full and notched specimens, as it is shown on the following graphs, when subjected to static tensile loads, initially exhibit a reduction in surface temperature (Figure 8). This phenomenon is a consequence of the widely recognized thermoelastic effect, which is linked to changes in volume that occur during the elastic phase.

Figure 8. Thermal map of full specimens

Figure 9.Thermal contour of full specimen

Through a comprehensive analysis of the thermal maps of the specimen surfaces, we gained valuable insights into the temperature distribution and the progressive evolution of damage during the testing process. The temperature