
Proceedings Paper
Nd:YAG Pulsed Laser based flaw imaging techniques for noncontact NDE of an aluminum plateFormat | Member Price | Non-Member Price |
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Paper Abstract
Recently, the longitudinal, shear and surface waves have been very widely used as a kind of ultrasonic wave exploration
methods to identify internal defects of metallic structures. The ultrasonic wave-based non-destructive testing (NDT) is
one of main non-destructive inspection techniques for a health assessment about nuclear power plant, aircraft, ships,
and/or automobile manufacturing. In this study, a noncontact pulsed laser-based flaw imaging NDT technique is
implemented to detect the damage of a plate-like structure and to identify the location of the damage. To achieve this
goal, the Nd:YAG pulsed laser equipment is used to generate a guided wave and scans a specific area to find damage
location. The Nd: YAG pulsed laser is used to generate Lamb wave and piezoelectric sensors are installed to measure
structural responses. Ann aluminum plate is investigated to verify the effectiveness and the robustness of the proposed
NDT approach. A notch is a target to detect, which is inflicted on the surface of an aluminum plate. The damagesensitive
features are extracted by comparing the time of flight of the guided wave obtained from an acoustic emission
(AE) sensor and make use of the flaw imaging techniques of the aluminum plate.
Paper Details
Date Published: 30 March 2012
PDF: 7 pages
Proc. SPIE 8346, Smart Sensor Phenomena, Technology, Networks, and Systems Integration 2012, 83461H (30 March 2012); doi: 10.1117/12.915477
Published in SPIE Proceedings Vol. 8346:
Smart Sensor Phenomena, Technology, Networks, and Systems Integration 2012
Theodore E. Matikas, Editor(s)
PDF: 7 pages
Proc. SPIE 8346, Smart Sensor Phenomena, Technology, Networks, and Systems Integration 2012, 83461H (30 March 2012); doi: 10.1117/12.915477
Show Author Affiliations
Woong-Ki Park, Sungkyunkwan Univ. (Korea, Republic of)
Changgil Lee, Sungkyunkwan Univ. (Korea, Republic of)
Changgil Lee, Sungkyunkwan Univ. (Korea, Republic of)
Seunghee Park, Sungkyunkwan Univ. (Korea, Republic of)
Published in SPIE Proceedings Vol. 8346:
Smart Sensor Phenomena, Technology, Networks, and Systems Integration 2012
Theodore E. Matikas, Editor(s)
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