Investigation of the right first-time distortion compensation approach in laser powder bed fusion of a thin manifold structure made of Inconel 718

Afazov, S. ORCID: 0000-0001-5346-1933, Rahman, H. and Serjouei, A. ORCID: 0000-0002-7250-4131, 2021. Investigation of the right first-time distortion compensation approach in laser powder bed fusion of a thin manifold structure made of Inconel 718. Journal of Manufacturing Processes, 69, pp. 621-629. ISSN 1526-6125

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Abstract

The research work first demonstrates modelling techniques for distortion prediction of laser powder bed fusion (LPBF) using the inherent strain approach implemented in structural finite element analyses. The prediction of distortion is compared with experimentally measured results of a thin manifold structure made of Inconel 718. The predicted distortions were used to verify the right first-time approach for distortion compensation where the thin manifold structure was first simulated. The distortion was then compensated using mapping techniques across different source meshes, and the component was finally manufactured using LPBF. Two components were built, one with compensation and one without compensation. The results showed that the right first-time approach compensated the distortion for the majority of the part. There were areas where the compensation was not accurate due to overpredictions of the distortion.

Item Type: Journal article
Publication Title: Journal of Manufacturing Processes
Creators: Afazov, S., Rahman, H. and Serjouei, A.
Publisher: Elsevier BV
Date: 19 August 2021
Volume: 69
ISSN: 1526-6125
Identifiers:
NumberType
10.1016/j.jmapro.2021.08.016DOI
S1526612521005922Publisher Item Identifier
1463681Other
Divisions: Schools > School of Science and Technology
Record created by: Linda Sullivan
Date Added: 25 Aug 2021 08:30
Last Modified: 25 Aug 2021 08:30
URI: http://irep.ntu.ac.uk/id/eprint/44079

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