Heat induced damage detection in composite materials by terahertz radiation

Maciej Radzieński; Magdalena Mieloszyk; Ehsan Kabiri Rahani; Tribikram Kundu; Wiesław Ostachowicz

doi:10.1117/12.2084144

23 March 2015 Heat induced damage detection in composite materials by terahertz radiation

Maciej Radzieński, Magdalena Mieloszyk, Ehsan Kabiri Rahani, Tribikram Kundu, Wiesław Ostachowicz

Proceedings Volume 9438, Health Monitoring of Structural and Biological Systems 2015; 94381P (2015) https://doi.org/10.1117/12.2084144
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2015, San Diego, California, United States

Abstract

In recent years electromagnetic Terahertz (THz) radiation or T-ray has been increasingly used for nondestructive evaluation of various materials such as polymer composites and porous foam tiles in which ultrasonic waves cannot penetrate but T-ray can. Most of these investigations have been limited to mechanical damage detection like inclusions, cracks, delaminations etc. So far only a few investigations have been reported on heat induced damage detection. Unlike mechanical damage the heat induced damage does not have a clear interface between the damaged part and the surrounding intact material from which electromagnetic waves can be reflected back. Difficulties associated with the heat induced damage detection in composite materials using T-ray are discussed in detail in this paper. T-ray measurements are compared for different levels of heat exposure of composite specimens.

Citation Download Citation

Maciej Radzieński, Magdalena Mieloszyk, Ehsan Kabiri Rahani, Tribikram Kundu, and Wiesław Ostachowicz "Heat induced damage detection in composite materials by terahertz radiation", Proc. SPIE 9438, Health Monitoring of Structural and Biological Systems 2015, 94381P (23 March 2015); https://doi.org/10.1117/12.2084144

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