Azimuthally Scanned Angled-Beam Pulse-Echo Ultrasound for Characterization of Impact Damage in Composites
Abstract
Characterization of barely visible impact damage (BVID) in polymer matrix composites (PMCs) is necessary to use slow crack growth damage tolerance models and evaluate remaining life of PMC components. Azimuthally scanned angled-beam pulse-echo ultrasound is investigated as a complimentary technique to normal incidence ultrasound inspection of BVID in PMCs to characterize delamination fields. It is found that there is a correlation between signals present in the azimuthally scanned angled-beam pulse-echo ultrasound C-scans and transverse cracks seen in X-ray computed tomography inspection. These transverse cracks are not readily identifiable as transverse cracks in normal incidence C-scan inspection.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Apr 15, 2020
- Source ID
- 10.1115/1.4046726
Entities
People
- Daniel M. Sparkman
- David Zainey
- John C. Aldrin
- John T. Welter
- Tyler Lesthaeghe
- Vicki Kramb
Organizations
- Air Force Research Laboratory
- United States Air Force
- University of Dayton