Non-Destructive Techniques and Technologies for Qualification of Additive Manufactured Parts and Processes – A Literature Review

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Authors
  1. Sharratt, B.M.
Corporate Authors
Defence Research and Development Canada, Atlantic Research Centre, Halifax NS (CAN);Sharratt Research and Consulting Inc, Victoria BC (CAN)
Abstract
Worldwide demand for and acceptance of metal additive manufacturing continues to grow in many fields with biomedical to aerospace leading the way. One serious hurdle that the technology faces is concerns about the repeatability and reliability of the technology from part-to-part, material-to-material, day-to-day, and machine-to-machine. Despite a history dating back to the mid 1980's, there is still much to be learned with respect to the conversion of wire or powder to metallic part by melting or sintering with a high-energy laser or electron beam. From the consistency of its microstructure, to the effects of typical defects on part performance, quality concerns are being addressed through a variety of avenues. In this report, a review of the material trends associated with metal additive manufacturing is presented alongside an investigation of the state-of-the art in process monitoring, modeling, and control. A critical part of any quality control and inspection program, non-destructive evaluation methods as applied and applicable to metal additive manufacturing are also reviewed. Recommendations, based on observed themes and trends with respect to the abilities of current materials barriers, sensor technologies, and non-destructive test methods, include: understanding the porosity - performance relationship its link to NDE probability of detection; translating melt pool characteristics into mechanical performance predictors through experimentally-validated numerical models;
Keywords
non-destructive inspection;additive manufacturing;processing;parameters;porosity;mechanical performance
Report Number
DRDC-RDDC-2015-C035 — Contract Report
Date of publication
01 Mar 2015
Number of Pages
156
DSTKIM No
CA040667
CANDIS No
801800
Format(s):
Electronic Document(PDF)

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