Determination of Fatigue Crack Propagation Rate by Two Methods

Bulletin of the Polytechnic Institute of Iași. Machine constructions Section Pub Date : 2023-03-01 DOI:10.2478/bipcm-2023-0004

Fayez Samara, Layth Al-Kisswani, V. Goanță

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Abstract

Abstract In the paper are present a practical procedure involving the determination of crack propagation rate using da/dN software. The procedure of the tests, the presentation of the da/dN software and its operation, the hypothesis and the conditions of the experiment and the results obtained from the experiment were presented. The determination of the yield strength and elastic characteristics was used, in which the steps for carrying out an experiment in the laboratory were explained. This was carried out by choosing the materials, presenting the apparatus and the specimen to be analyzed, and the results obtained from the experiment. It should be mentioned that da/dN software was used to obtain the results. The paper illustrates the dependencies between crack growth and the number of loading cycles, demonstrated by two experimental methods. The theoretical part underlying the two experimental methods, the calculation relations used, the importance and role of the da/dN software in their realization are discussed, and the conclusions of the study are presented at the end.

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两种方法测定疲劳裂纹扩展速率

本文介绍了一种利用da/dN软件测定裂纹扩展速率的实用程序。介绍了实验的步骤、da/dN软件的介绍及其操作、实验的假设和条件以及实验结果。采用了屈服强度和弹性特性的测定方法，说明了在实验室进行实验的步骤。这是通过选择材料，展示要分析的仪器和标本，以及从实验中得到的结果来进行的。需要说明的是，我们使用了da/dN软件来获得结果。本文通过两种试验方法说明了裂纹扩展与加载循环次数之间的关系。讨论了两种实验方法的理论基础、所用的计算关系、da/dN软件在其实现中的重要性和作用，并给出了研究结论。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Bulletin of the Polytechnic Institute of Iași. Machine constructions Section

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