کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6481215 | 1369277 | 2016 | 10 صفحه PDF | دانلود رایگان |
- An imaging setup uses terahertz (THz) waves from a Quantum Cascade Laser.
- NDE of impact damages on polypropylene/polypropylene composite samples is performed.
- THz images are compared with results from a commercial ultrasonic C-scan instrument.
- THz images in reflection and ultrasound C-scan give similar results.
- Delaminations and crack in the fiber fabrics are shown in THz transmission images.
This paper presents a Non-Destructive Testing (NDT) method based on the penetration properties of terahertz (THz) waves. A CW raster-scanning THz imaging setup, using a 3.8 THz Quantum Cascade Laser as a source, is used to perform NDT of polypropylene/polypropylene composite samples.Results from transmission and reflection THz imaging are compared to ultrasound C-scan. THz images in reflection give similar results to C-scan whereas THz transmission images provide more information about delaminations and cracks in the fiber fabrics.
Journal: Case Studies in Nondestructive Testing and Evaluation - Volume 6, Part A, November 2016, Pages 53-62