Laser based remote and rapid inspection for composite plates

Zhaoyun Ma; Lingyu Yu

doi:10.1117/12.2558192

22 April 2020 Laser based remote and rapid inspection for composite plates

Zhaoyun Ma, Lingyu Yu

Proceedings Volume 11382, Smart Structures and NDE for Industry 4.0, Smart Cities, and Energy Systems; 113820H (2020) https://doi.org/10.1117/12.2558192
Event: SPIE Smart Structures + Nondestructive Evaluation, 2020, Online Only

Abstract

Composites have been extensively used in aero structure and become the predominate components in the new airframes. Thus, rapid and effective inspection for composite structures is highly desired in aerospace engineering in order to shorten the certificate cycle for new structures or provide safety guarantee for existing ones. In this paper, a laser based remote Lamb wave inspection system is presented and implemented on composite plates for simulated damage detection. The system employs pulsed laser (PL) and scanning laser Doppler vibrometer (SLDV) for noncontact and remote Lamb wave actuation and wavefield sensing. A composite plate with simulated defect (surface bonded quartz rod) is inspected with the PL-SLDV laser system. Wave scattering are observed in the SLDV acquired wavefield and the damage is further evaluated with wavefield imaging and frequency wavenumber analysis. Potential application towards automatic PL Lamb wave excitation is also explored through employing an industry robotic arm towards rapid inspection.

Conference Presentation

Citation Download Citation

Zhaoyun Ma and Lingyu Yu "Laser based remote and rapid inspection for composite plates", Proc. SPIE 11382, Smart Structures and NDE for Industry 4.0, Smart Cities, and Energy Systems, 113820H (22 April 2020); https://doi.org/10.1117/12.2558192

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