Journal
VIRTUAL AND PHYSICAL PROTOTYPING
Volume 12, Issue 4, Pages 301-321Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/17452759.2017.1357319
Keywords
Non-destructive testing (NDT); additive manufacturing (AM)
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This paper presents an overview on the principle of operation for post-process inspection non-destructive testing (NDT) techniques. The techniques include visual inspection, liquid penetrant testing, magnetic particle testing, eddy current testing, ultrasonic testing, and radiography. The applications of these NDT techniques in additive manufacturing (AM) and their suitability for defects detection of additively manufactured parts are reviewed. The sensitivity, and the advantages and disadvantages of each technique are evaluated. The types of defect, and the detectability of these defects by NDT techniques are assessed. The applicability of each NDT technique for different categories of AM process is discussed. The categories of AM are, namely, material extrusion, powder bed fusion, vat photopolymerisation, material jetting, binder jetting, sheet lamination, and directed energy deposition.
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