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Title: A study on laser-based ultrasonic technique by the use of guided wave tomographic imaging

Guided wave tests are impractical for investigating specimens with limited accessibility and coarse surfaces or geometrically complicated features. A non-contact setup with a laser ultrasonic transmitter and receiver is the classic attractive for guided wave inspection. The present work was done to develop a non-contact guided-wave tomography technique by laser ultrasonic technique in a plate-like structure. A method for Lam wave generation and detection in an aluminum plate with a pulse laser ultrasonic transmitter and a Michelson interferometer receiver has been developed. In the images obtained by laser scanning, the defect shape and area showed good agreement with the actual defect. The proposed approach can be used as a non-contact-based online inspection and monitoring technique.
Authors:
;  [1] ;  [2] ;  [3]
  1. Graduate school, School of Mechanical Engineering, Pusan National University (Korea, Republic of)
  2. School of Mechanical Engineering, Pusan National University (Korea, Republic of)
  3. Center for Quality Engineering and Failure Prevention, Northwestern University, Evanston, IL (United States)
Publication Date:
OSTI Identifier:
22391246
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1650; Journal Issue: 1; Conference: 41. Annual Review of Progress in Quantitative Nondestructive Evaluation, Boise, ID (United States), 20-25 Jul 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 36 MATERIALS SCIENCE; ALUMINIUM; DEFECTS; DETECTION; ELECTROMAGNETIC PULSES; IMAGES; INSPECTION; LASER RADIATION; LASERS; MICHELSON INTERFEROMETER; MONITORING; PLATES; TOMOGRAPHY; ULTRASONIC TESTING; ULTRASONIC WAVES