Methods for fatigue-life estimation: A review of the current status and future trends

Abstract

With the development of modern industry and ever more complex structural loads, the possibility of fatigue failure is increasing. Fatigue analysis can be used to evaluate the service life of components and reduce the probability of accidents. Therefore, the development and application of fatigue-analysis technology have important research significance. This paper collects information from a wide field of literature and summarizes the current status of fatigue-analysis research. It covers related theoretical knowledge, fatigue-life prediction methods, and fatigue design methods and their application scenarios, and it summarizes the challenges and research hotspots in the field. On the basis of this examination, future development directions of fatigue-life prediction methods are proposed. The conclusions will have a certain guiding role in the development of fatigue-analysis methods.

Lap Shear Strength and Fatigue Analysis of Continuous Carbon-Fibre-Reinforced 3D-Printed Thermoplastic Composites by Varying the Load and Fibre Content

“…Fatigue life or the number of cycles to failure depends on several factors such as loading type, stress ratio, mean stress effects, and fatigue modification factors. Terminologies discussed in [ 19 ] that are mainly used in assessing fatigue life are shown in Figure 3 . where is the minimum stress and is the maximum stress.…”

“…where σ min is the minimum stress and σ max is the maximum stress. Terminologies discussed in [19] that are mainly used in assessing fatigue life are shown Figure 3.…”

Strain-based running-reliability characterisation in time-domain for risk monitoring under various load conditions

“…The extensive model of strain-life fatigue damage considers the load cycle sequence effect called effective strain damage (ESD), which was developed by Abdullah, and it was suggested a better enhancement [14]. The method in acquiring the cause for crack growth and crack closure has functioned properly for several materials, geometries of component, mean-strain effects, load spectra, and magnitudes of strain.…”

“…The ESD model is able in predicting fatigue life in a large selection of materials in numerous types of load conditions and also considers the mean stress effect [14].…”

Automation of Aircraft Fatigue Life Estimation

“…Although many industries, such as automotive (Reza Kashyzadeh, 2020), agricultural (Mattetti et al, 2012), or aerospace (Tavares & de Castro, 2017), use different standards for estimation and measurement of overall fatigue strength of a designed structure, the fundamental methods stay constant. The main idea is to predict the most probable time or number of cycles the structure can endure (Zhang et al, 2023). The prediction is mostly performed using data on statistical fatigue strength of a given material's test sample.…”