Developing damage metrics for metallic structures undergoing fatigue using real-time thermographic evaluation

E. Z. Kordatos; T. E. Matikas

doi:10.1117/12.881019

15 April 2011 Developing damage metrics for metallic structures undergoing fatigue using real-time thermographic evaluation

E. Z. Kordatos, T. E. Matikas

Author Affiliations +

Proceedings Volume 7982, Smart Sensor Phenomena, Technology, Networks, and Systems 2011; 79820U (2011) https://doi.org/10.1117/12.881019
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2011, San Diego, California, United States

Abstract

The purpose of this study is to develop an innovative non-destructive methodology for analyzing the thermal effects in metallic materials caused by fatigue. Mechanical stresses induced by cyclic loading in the material cause heat release due to microstructural changes, which results in an increase of the material's temperature. The heat release was quantified as a function of fatigue cycles in carbon steel samples. Mechanical hysteresis phenomena were analyzed to identify the metrics of damage, which relates to thermal parameters characterizing the level of damage of the material as a function of fatigue cycles.

Citation Download Citation

E. Z. Kordatos and T. E. Matikas "Developing damage metrics for metallic structures undergoing fatigue using real-time thermographic evaluation", Proc. SPIE 7982, Smart Sensor Phenomena, Technology, Networks, and Systems 2011, 79820U (15 April 2011); https://doi.org/10.1117/12.881019

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