Evaluation and prediction of material fatigue characteristics under impact loads: review and prospects

Abstract

PurposeThe properties of materials under impact load are introduced in terms of metal, nonmetallic materials and composite materials. And the application of impact load research in biological fields is also mentioned. The current hot research topics and achievements in this field are summarized. In addition, some problems in theoretical modeling and testing of the mechanical properties of materials are discussed.Design/methodology/approachThe situation of materials under impact load is of great significance to show the mechanical performance. The performance of various materials under impact load is different, and there are many research methods. It is affected by some kinds of factors, such as the temperature, the gap and the speed of load.FindingsThe research on mechanical properties of materials under impact load has the characteristics as fellow. It is difficult to build the theoretical model, verify by experiment and analyze the data accumulation.Originality/valueThis review provides a reference for further study of material properties.

Prediction and evaluation of fatigue life considering material parameters distribution characteristic

“…, 2019a; Zhu et al. , 2018a, b; Liu et al , 2022b). Load spectrum of the stabilizer bar was collected and complicated, and the strain-life model was studied considering the influence of average stress and maximum stress at the failure area (Li et al.…”

Multiaxial fatigue life prediction for metallic materials considering loading path and additional hardening effect

“…The existing fatigue life models based on the critical plane approach are reviewed and summarized (Liu et al, 2022b). A fatigue life model that can consider non-proportional additional damage effects is proposed to address their shortcomings.…”

“…The existing fatigue life models based on the critical plane approach are reviewed and summarized (Liu et al. , 2022b).…”

Hardness measurements as a technique for measuring accumulated fatigue damage

“…This can be seen, for instance, in the recommended practice given by DNV GL (2014) and a paper based on risk-based inspection (RBI) by Keprate and Ratnayake (2015). The issue of only adopting macroscopic crack propagation to evaluate the current fatigue damage state, or the remaining fatigue life, is due to the commonly accepted fact that macroscopic crack propagation is short in comparison to the total fatigue life, within the high cycle fatigue (HCF), low stress domain (Correia et al, 2021), resulting in the need to initiate a costly inspection program once the expected fatigue life has been surpassed (Wu et al, 2020;Liu et al, 2022b). Thus, the motivation emerges for research into methodologies to assess the change in material characteristics throughout the fatigue life, so that it can be leveraged as a tool to evaluate fatigue damage before the presence of a macroscopic crack.…”

“…, 2021), resulting in the need to initiate a costly inspection program once the expected fatigue life has been surpassed (Wu et al. , 2020; Liu et al. , 2022b).…”