| Autor: |
فرید آزادی, امیرحسین بهرو ش, داود اکبر ی, سید کاوه هدایت ی |
| Předmět: |
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| Zdroj: |
Modares Mechanical Engineering; Jul2022, Vol. 22 Issue 7, p441-449, 9p |
| Abstrakt: |
In this study, the effect of fiber presence in continuous fiber reinforced Fused Deposition Modeling samples (FDM) on the stress and residual strain created during the process was investigated. The FDM process is recognized as one of the most widely used Additive Manufacturing methods for layered prototypes from a three-dimensional model. One of the most important issues in this process is the distortion of parts produced during printing. The distortion created is mainly due to the rapid cycles of melting and solidification of the material, which produce residual stresses in the sample. The main objective of this study was to measure the residual strain of residual stress in unreinforced and reinforced PLA samples with continuous glass fiber using digital image correlation and hole drilling technique. According to the results, the presence of continuous glass fibers in PLA samples made by fused deposition modeling method, will cause residual stresses and residual strain due to these stresses in the parts that have the maximum amount of residual strains created in the sample reinforced with glass fibers in the x and y directions were equal to 1.09 and 0.34%, respectively. The results show that the released strains in the reinforced specimen in all stages of drilling were greater than the unreinforced specimen. Therefore, the presence of continuous glass fibers will increase the residual stresses and as a result will create further distortions in acidic polylactic samples produced by the molten coating method. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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