期刊
MATERIALS & DESIGN
卷 50, 期 -, 页码 44-50出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2013.02.067
关键词
Fused deposition modeling; Layer manufacturing; Processing parameters; Fiber Bragg grating; Residual strains; Coefficient of thermal expansion
资金
- THALIS Program of the Hellenic Ministry of Education
- MIS [380278]
Fused deposition modeling (FDM) is a process by which functional parts can be rapidly produced by sequential deposition of fused material layers. Various severe inaccuracies such as curl and warp distortions and delaminations are attributed to residual stresses and strains build up during the fabrication process. Their magnitude is largely influenced by the selected process parameters. This study investigates the magnitude of the solidification induced residual strains in FDM fabricated parts using different processing parameters. Two important parameters were considered: (a) layer thickness and (b) deposition orientation. The developed residual strains at the end of the fabrication process were recorded using an optical sensor with a short fiber Bragg grating (FBG) embedded at the midplane of FDM built specimens. The same specimens were additionally subjected to a thermal cycle where the coefficient of thermal expansion (CTE) of the ABS material was measured using the FBG sensor. (c) 2013 Elsevier Ltd. All rights reserved.
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