Abstract

To assess the reliability of parts made of polymer composite materials when sand and dust enter the compressor during take-off and landing, a periodic measurement of the part thickness during aircraft parking is proposed. The criterion is based on checking the permissible level of static stresses and natural frequencies when the thickness of the composite part of the flow separator is decreased. To determine the critical thickness, a series of calculations of natural frequencies and mode shapes as well as maxima static displacements and stresses of the flow separator was performed.

中文翻译：

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用复合材料估算航空发动机零件耐蚀性的标准的发展

摘要

为了评估起降过程中沙尘进入压缩机时聚合物复合材料制零件的可靠性，提出了在飞机停放期间定期测量零件厚度的建议。该标准基于检查当分流器的复合部件的厚度减小时允许的静应力和固有频率。为了确定临界厚度，进行了一系列自然频率和振型的计算，以及分流器的最大静态位移和应力。