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Abstract：
This work presents a comprehensive investigation of an experimental study conducted on ultra-high molecular weight polyethylene (UHMWPE) sheets using single point incremental forming (SPIF). The analysis is performed within a previously established research framework to evaluate formability and failure characteristics, including necking and fracture, in both conventional Nakajima tests and incremental sheet forming specimens. The experimental design of the SPIF tests incorporates process parameters such as spindle speed and step down to assess their impact on the formability of the material and the corresponding failure modes. The results indicate that a higher step down value has a positive effect on formability in the SPIF context. The study has identified the tool trajectory in SPIF as the primary influencing factor in the twisting failure mode. Implementing a bidirectional tool trajectory effectively reduced instances of twisting. Additionally, this work explores a medical case study that examines the manufacturing of a polyethylene liner device for a total hip replacement. This investigation critically analyses the manufacturing of plastic liner using SPIF, focusing on its formability and the elastic recovery exhibited by the material.
摘要：
这项工作提出了一个实验研究的全面研究进行了超高分子量聚乙烯（UHMWPE）片材使用单点增量成形（SPIF）。在先前建立的研究框架内进行分析，以评估可成形性和失效特征，包括颈缩和骨折,在传统的Nakajima测试和增量片材成形试样中。SPIF测试的实验设计结合了过程参数，如主轴转速和降压，以评估它们对材料的可成形性和相应的失效模式的影响。结果表明，在SPIF环境中，较高的降压值对可成形性具有积极影响。该研究确定了SPIF中的刀具轨迹是扭转失效模式的主要影响因素。实施双向刀具轨迹有效地减少了扭曲的实例。此外,这项工作探索了一项医学案例研究，该研究检查了用于全髋关节置换的聚乙烯衬里装置的制造。这项调查批判性地分析了使用SPIF制造塑料衬垫，专注于其成型性和材料表现出的弹性回复。
