| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 6481215 | Case Studies in Nondestructive Testing and Evaluation | 2016 | 10 Pages |
â¢An imaging setup uses terahertz (THz) waves from a Quantum Cascade Laser.â¢NDE of impact damages on polypropylene/polypropylene composite samples is performed.â¢THz images are compared with results from a commercial ultrasonic C-scan instrument.â¢THz images in reflection and ultrasound C-scan give similar results.â¢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.
