Azimuthally Scanned Angled-Beam Pulse-Echo Ultrasound for Characterization of Impact Damage in Composites | Zendy

John T. Welter | Zendy; Daniel Sparkman | Zendy; John C. Aldrin | Zendy; David Zainey | Zendy; Tyler Lesthaeghe | Zendy; V. A. Kramb | Zendy

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Azimuthally Scanned Angled-Beam Pulse-Echo Ultrasound for Characterization of Impact Damage in Composites

Author(s) -

John T. Welter,

Daniel Sparkman,

John C. Aldrin,

David Zainey,

Tyler Lesthaeghe,

V. A. Kramb

Publication year - 2020

Publication title -

journal of nondestructive evaluation diagnostics and prognostics of engineering systems

Language(s) - English

Resource type - Journals

eISSN - 2572-3901

pISSN - 2572-3898

DOI - 10.1115/1.4046726

Subject(s) - materials science , delamination (geology) , transverse plane , ultrasound , beam (structure) , pulse (music) , characterization (materials science) , ultrasonic sensor , transducer , optics , acoustics , radiology , physics , medicine , paleontology , tectonics , detector , biology , subduction , nanotechnology

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.

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