Laser ultrasonic inspection of additive manufactured components

Additively manufactured components are gaining popularity in aerospace, automotive and medical engineering applications. Additive manufacturing (AM) offers tremendous cost advantages over traditional manufacturing methods. However, inter- and intra-layer defects are observed in AM components. Moreov...

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Bibliographic Details
Published in:International journal of advanced manufacturing technology 2019-06, Vol.102 (5-8), p.2571-2579
Main Authors: Davis, Geo, Nagarajah, Romesh, Palanisamy, Suresh, Rashid, Rizwan Abdul Rahman, Rajagopal, Prabhu, Balasubramaniam, Krishnan
Format: Article
Language:English
Subjects:
Additive manufacturing
Aerospace engineering
Automotive engineering
Automotive parts
CAE) and Design
Computed tomography
Computer-Aided Engineering (CAD
Defects
Destructive testing
Engineering
Industrial and Production Engineering
Inspection
Laser beam melting
Lasers
Mechanical Engineering
Media Management
Nondestructive testing
Original Article
Production methods
Ultrasonic methods
Ultrasonic testing
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Summary:Additively manufactured components are gaining popularity in aerospace, automotive and medical engineering applications. Additive manufacturing (AM) offers tremendous cost advantages over traditional manufacturing methods. However, inter- and intra-layer defects are observed in AM components. Moreover, the lack of appropriate testing methods for assessing the integrity of AM components deters its use, despite the several functional advantages it has to offer. Non-destructive testing (NDT) forms the most common and convenient way of inspecting parts. In this paper, a laser ultrasonic technique for the inspection of AM components is proposed. The results demonstrate laser ultrasonic testing (LUT) as a promising method for the non-contact inspection of additive manufactured components. Furthermore, the results were validated using X-ray computed tomography (CT) and ultrasonic immersion testing (UIT). The sample used in this study was manufactured through selective laser melting (SLM) AM process with built-in holes representing defects.
ISSN:0268-3768
1433-3015
DOI:10.1007/s00170-018-3046-y