The positive combination of lightweight design and high fatigue resistance of fiber reinforced materials has led to their broad application in many different structural applications. During the design phase, it is often only considered that these materials are subjected to tensile loading conditions to make use of their excellent strength and fatigue resistance properties. However, in the current challenge to reduce weight of transportation vehicles, a broadening range of loading conditions for composites may arise, whereby it is not always possible to restrict loading to pure tensile conditions. In contrast to metals, compressive loading is a challenging load case for composites. Much research is undertaken to understand the compressive behavior of composites and to develop valid methods for their characterization. Especially for compressive fatigue testing (load ratio R < 0 and R > 1), the generally accepted methods are rare, and not much is reported in the literature on how characterization should be done. This review provides an overview of existing methods, i.e., setups for testing fiber reinforced polymer composites under compression and discusses their applicability to fatigue testing.

中文翻译：

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复合材料的压缩疲劳测试装置—综述

轻质设计和纤维增强材料的高抗疲劳性的积极结合，使其在许多不同的结构应用中得到了广泛的应用。在设计阶段，通常仅考虑将这些材料置于拉伸载荷条件下，以利用其出色的强度和抗疲劳性能。然而，在减轻运输车辆重量的当前挑战中，可能出现用于复合材料的载荷条件的扩大范围，由此并不总是可能将载荷限制在纯拉伸条件下。与金属相比，压缩载荷是复合材料具有挑战性的载荷情况。进行了大量研究以了解复合材料的压缩行为并开发有效的表征方法。R  <0和R  > 1），通常接受的方法很少，并且在文献中关于如何进行表征的报道也很少。这篇综述概述了现有方法，即在压缩条件下测试纤维增强聚合物复合材料的装置，并讨论了其在疲劳测试中的适用性。