The effect of crack insertion for FDM printed PLA materials on Mode I and Mode II fracture toughness

被引：31
|
作者：
Valean, Cristina [1 ]
Marsavina, Liviu [1 ]
Marghitas, Mihai [1 ]
Linul, Emanoil [1 ]
Razavi, Nima [2 ]
Berto, Filippo [2 ]
Brighenti, Roberto [3 ]
机构：
[1] Univ Politehn Timisoara, 1 Mihai Viteazu Ave, Timisoara 300222, Romania
[2] Norwegian Univ Sci & Technol NTNU, Richard Birkelands Vei 2b, N-7491 Trondheim, Norway
[3] Univ Parma, Viale Sci 181-A, I-43124 Parma, Italy
来源：
1ST VIRTUAL EUROPEAN CONFERENCE ON FRACTURE - VECF1 | 2020年 / 28卷
关键词：
Additive Manufacturing; Fused deposition modeling; PLA; mode I; mode II; fracture toughness;
D O I：
10.1016/j.prostr.2020.11.128
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The paper presents mode I and II fracture toughness results for polylactic acid material obtained via fused deposition modeling. The tests were performed using Single Edge Notch Bend specimens loaded in four point bending: symmetric for mode I, asymmetric for mode II, respectively. The notch was inserted by 3D printing, and by milling, respectively. Fracture toughness values measured for the specimens with 3D printed notch resulted to be higher than those obtained by milling. The effect of notch insertion is more evident in mode I while it is less important for mode II. (C) 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the European Structural Integrity Society (ESIS) ExCo
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收藏
页码：1134 / 1139
页数：6
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