Title: Study on damage fatigue test method of metal materials for rotating machinery

Authors: Wei Jing; Peng Wang; Ningchao Zhang

Addresses: Department of Electronic Information Engineering, Xi'an Technological University, Xi'an 710021, China ' Department of Electronic Information Engineering, Xi'an Technological University, Xi'an 710021, China ' Department of Electronic Information Engineering, Xi'an Technological University, Xi'an 710021, China

Abstract: In order to solve the problem that the existing metal material damage fatigue test methods can not accurately test the compression and shear properties of materials, a new metal material damage fatigue test method for rotating machinery is proposed in this paper. The calculation model of mechanical characteristics of metal materials based on impact load is established to calculate the yield moment and the damage fatigue degree of metal test materials. The smaller size Q235 steel material on rotating machinery is selected as the experimental object and the damage fatigue test is designed. The experimental results show that the overall height of the three-dimensional morphology of the fatigue surface is low, and becomes uneven when the number of tensile times increases. It is proved that the damage fatigue test of the proposed method is more accurate and can predict the life and strength of steel under damage.

Keywords: rotating machinery; metallic materials; damage fatigue; impact load; cyclic load.

DOI: 10.1504/IJMPT.2023.127961

International Journal of Materials and Product Technology, 2023 Vol.66 No.1, pp.17 - 30

Received: 22 Oct 2021
Accepted: 14 Mar 2022
Published online: 22 Dec 2022 *