Ultrasonic evaluation of matrix damage in impacted composite laminates

By Francesco Aymerich, Silvia Meili. 2000

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Successes and challenges in non-destructive testing of aircraft composite structures (2020, background): “Among different type of UT representation methods [59-61], UT C-scan is a valuable tool to monitor the transmission losses caused by delamination and disbonds, volumetric defects including voids [62, 63] and damage detection in composite laminates under both low”
A comparison of multi-scale 3D X-ray tomographic inspection techniques for assessing carbon fibre composite impact damage (2013, background): “The focus of this study is the comparison of different tomographic methods, identifying their capabilities and limitations, and their use in a complementary manner for creating an overall 3D damage assessment at both macroscopic and microscopic levels.”
Impact damage identification in composite laminates using vibration testing (2014, background): “Over the years, due to the significance of this problem, several non-destructive damage assessment techniques have been used for impact damage detection in composites, including acoustic emission, radiography, shearography, thermography and ultrasonics, whose development continue to date Aymerich an”