期刊
POLYMER TESTING
卷 34, 期 -, 页码 85-96出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymertesting.2014.01.001
关键词
Pulsed ultrasonic polar scan; Fiber reinforced plastics; Damage characterization; NDT
资金
- FWO-Vlaanderen [G012010N]
This study investigates the use of both amplitude and time-of-flight based pulsed ultrasonic polar scan (P-UPS) as a sophisticated non-destructive damage sensor for fiber reinforced composites. Focus is put on stiffness related damage phenomena, which are in general difficult to monitor nondestructively, and their associated signature in the P-UPS image. Various composite samples, with different damage states, have been inspected at multiple material spots with the P-UPS technique. The results demonstrate the capability of the P-UPS method to obtain a unique signature of the local material damage characteristics. Several indicators in the acquired P-UPS images have been identified from which the type and level of material degradation can be obtained. The P-UPS extracted characteristics are fully supported by simulations, conventional tests as well as visual inspection. (C) 2014 Elsevier Ltd. All rights reserved.
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