Teraherz frequencies electromagnetic waves - a new tool for investigating composite defects
Krzysztof Gorący, Ryszard Pilawka
Quarterly No. 1, 2011 pages 75-79
DOI:
keywords: non-destructive testing, polymer composite, composite defects
abstract In this paper the possibility of using a modern NDT technique - THz electromagnetic waves for composite ma-terials defects detection and identification was investigated. Two technological defects were investigated voids and internal delaminating. The composite materials were hand lay up made. Several kinds of reinforcing fibers (glass, basalt, jute) and polyester resin were used. Glass micro spheres and mica plates were placed at different depths in order to simulate technological defects. The specimens were tested using terahertz frequencies electromagnetic waves. The goal was to verify if the NDT method is appropriate to identify technological defects, misuse damage as well as determine parameters such as depth or size.