Jimenez-Martinez Moises, Varela-Soriano Julio, Carreón José Jorge Rojas, Torres-Cedillo Sergio G
Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Via Atlixcayotl 5718, Col. Reserva Territorial Atlixcayotl, C.P. 72453 Pue, Puebla, Mexico.
SEPI-ESIME Ticoman IPN, Av. Ticomán 600, La Purísima Ticoman, Gustavo A. Madero, 07340 Ciudad de México, Mexico.
Heliyon. 2023 Jul 25;9(8):e18480. doi: 10.1016/j.heliyon.2023.e18480. eCollection 2023 Aug.
Additive manufacturing is fast becoming a key process to manufacture a customized design with complex geometry and one process usually employed is based on the fused filament fabrication. Up to now this method is typically employed for rapid prototyping, it is therefore their mechanical strength is lower than the components manufactured using conventional casting process. It is well known that most failures are happened under repeated loads; therefore, a functional component mandatory needs to reach endurance strength under cyclic loads. Hence, this study set out to clarify several aspects of filament fused test specimens to determine their effect on accumulated damage to then predict component life under repeated loads. In this study is considered three waveforms such as sinusoidal, triangular and square, where it is observed that the square waveform provides the most severe loads. This study therefore makes a major contribution to research on the fatigue properties of parts manufactured using fused filament by reporting their fatigue behaviour under different fatigue load conditions. It would give a better understanding to improve the mechanical prediction of PLA, thereby it might be used to manufacture a functional component instead of only a prototype or spare part.
增材制造正迅速成为制造具有复杂几何形状的定制设计的关键工艺，通常采用的一种工艺是基于熔丝制造。到目前为止，这种方法通常用于快速成型，因此其机械强度低于使用传统铸造工艺制造的部件。众所周知，大多数失效发生在重复载荷下；因此，功能性部件必须在循环载荷下达到耐久强度。因此，本研究着手阐明丝状熔合试样的几个方面，以确定它们对累积损伤的影响，进而预测重复载荷下的部件寿命。在本研究中考虑了三种波形，如正弦波、三角波和方波，其中观察到方波提供了最严酷的载荷。因此，本研究通过报告使用熔丝制造的零件在不同疲劳载荷条件下的疲劳行为，对其疲劳性能研究做出了重大贡献。这将有助于更好地理解以改进聚乳酸的力学预测，从而它可能被用于制造功能性部件，而不仅仅是原型或备件。
