The elastic modulus is a key parameter for the description of material properties when evaluating metallic components under service loads. In particular, when evaluating strain-controlled tests for the application of the strain-life approach, there are numerous different possibilities in standards for determining this material parameter. These can lead to different results and confront the user with a certain challenge in selecting the most suitable method. In this publication, an overview of different evaluation methods is given and a new evaluation method is presented, in which the elastic modulus is determined using the reversal points of a strain-controlled cyclic test under macroscopic linear-elastic deformation. This allows a simple and clear, widely user-independent determination of the elastic modulus. In addition, the differences between the new and the commonly used evaluation methods are shown, using the example of the aluminum alloy EN AW-7075, and their influence on the strain-life curve, the P_SWT and P_J damage parameter curves, and the cyclic stress-strain curve by Ramberg-Osgood are investigated.

在评估服务载荷下的金属部件时，弹性模量是描述材料特性的关键参数。特别是，在评估应变寿命方法应用的应变控制测试时，确定该材料参数的标准有许多不同的可能性。这些会导致不同的结果，并使用户在选择最合适的方法时面临一定的挑战。在本出版物中，概述了不同的评估方法，并提出了一种新的评估方法，其中弹性模量是使用宏观线弹性变形下应变控制循环试验的反转点来确定的。这允许简单、清晰、广泛地独立于用户确定弹性模量。此外，研究了 P _SWT和P _J损伤参数曲线，以及 Ramberg-Osgood 的循环应力-应变曲线。