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2019 | OriginalPaper | Buchkapitel

17. Noncontact Nonlinear Ultrasonic Wave Modulation for Fatigue Crack and Delamination Detection

verfasst von : Hoon Sohn, Peipei Liu, Hyung Jin Lim, Byeongjin Park

Erschienen in: Nonlinear Ultrasonic and Vibro-Acoustical Techniques for Nondestructive Evaluation

Verlag: Springer International Publishing

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Abstract

Fatigue crack is a progressive and localized structural damage that occurs when a structure is subjected to cyclic loading. It is a critical concern for in-service metallic structural components for the failures caused by fatigue crack, which constitute nearly 90% of the total failures in metallic structures. Additionally, a fatigue crack only becomes conspicuous after the crack approaches approximately 80% of the structural fatigue life. For laminated composite structural components, delamination is a critical failure mechanism in the form of separated layers caused by cyclic loading or impact because the composite laminates do not provide reinforcement through the thickness. Damages like fatigue crack and delamination are often invisible or barely visible but may compromise the integrity of structural components and cause catastrophic failures.

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Metadaten
Titel
Noncontact Nonlinear Ultrasonic Wave Modulation for Fatigue Crack and Delamination Detection
verfasst von
Hoon Sohn
Peipei Liu
Hyung Jin Lim
Byeongjin Park
Copyright-Jahr
2019
DOI
https://doi.org/10.1007/978-3-319-94476-0_17

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