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.
Original language | English (US) |
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Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering |
Publisher | SPIE |
Volume | 9438 |
ISBN (Print) | 9781628415414 |
DOIs | |
State | Published - 2015 |
Event | Health Monitoring of Structural and Biological Systems 2015 - San Diego, United States Duration: Mar 9 2015 → Mar 12 2015 |
Other
Other | Health Monitoring of Structural and Biological Systems 2015 |
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Country | United States |
City | San Diego |
Period | 3/9/15 → 3/12/15 |
Keywords
- T-ray
- Terahertz radiation
- Thermal degradation
ASJC Scopus subject areas
- Applied Mathematics
- Computer Science Applications
- Electrical and Electronic Engineering
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics