We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Low-Power Fully Acoustic Non-Destructive Testing of Glass Fiber-Reinforced Composite Plate Utilizing Local Defect Resonance.
- Authors
Hanuman, N. S. V. N.; Bose, T.
- Abstract
In this paper, a low-power fully acoustic non-destructive testing (NDT) of glass fiber-reinforced composite plate has been presented. Input acoustic power in microwatt range was used for local defect resonance (LDR)-based delamination activation. Besides experimental results, numerical simulations were carried out via commercial ABAQUS platform. An oblique incident wave interaction with 3D composite plate was created, and the sound radiation pattern over the plate was studied with an air layer over the plate. In experiment, the sound was generated by a piezospeaker, while a MEMS microphone was used for reception over the plate. Moreover, a laser Doppler vibrometer was utilized for the LDR frequency and corresponding mode shape validation. Frequency spectrum, mode shape at LDR frequency, best wave impinging angle, efficiency, and sound directivity patterns were studied, with angles θ, ϕ = 10°, 30° being found to correspond to the best direction for sonic excitation. Moreover, fully acoustic system was found to be more efficient than partial acoustic system, i.e., that with contact excitation. The proposed method can be used for inspection of large structures taking advantage of the long-distance non-contact excitation.
- Subjects
GLASS-reinforced plastics; COMPOSITE plates; NONDESTRUCTIVE testing; LASER Doppler vibrometer; RESONANCE
- Publication
Strength of Materials, 2023, Vol 55, Issue 6, p1228
- ISSN
0039-2316
- Publication type
Article
- DOI
10.1007/s11223-024-00613-z