Additive manufacturing process monitoring and control by non-destructive testing techniques: challenges and in-process monitoring
Author
Lu, Qing Yang
Wong, Chee How
Date of Issue
2017School
School of Mechanical and Aerospace Engineering
Research Centre
Singapore Centre for 3D Printing
Abstract
This paper examines on the obstacles specific to the implementation of non-destructive testing (NDT) techniques in additive manufacturing (AM). The general challenges impeding the adoption of AM for volume production of parts, and the use of NDT techniques to ameliorate some of these challenges are studied. These challenges include the lack of understanding of AM materials, and insufficient standards for the mechanical testing and NDT of additively manufactured parts. An overview on the principle of operation for in-process inspection NDT methods is presented. The techniques include thermography, and acoustic emission testing. The applications of these NDT techniques in 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 defects, and the detectability of these defects by NDT techniques are assessed.
Subject
Non-destructive Testing
Additive Manufacturing
Additive Manufacturing
Type
Journal Article
Series/Journal Title
Virtual and Physical Prototyping
Rights
© 2017 Informa UK Limited, trading as Taylor & Francis Group.
Collections
http://dx.doi.org/10.1080/17452759.2017.1351201
Get published version (via Digital Object Identifier)