Related Experiment Video
Updated: Dec 20, 2025

Ultrasonic Fatigue Testing in the Tension-Compression Mode
Published on: March 7, 2018
Comparative Analysis of Fatigue EnergyCharacteristics of S355J2 Steel Subjected toMulti-Axis Loads
Cyprian T Lachowicz1, Robert Owsiński1
1Department of Mechanics and Machine Design, Opole University of Technology, ul. Prószkowska 76, 45-758 Opole, Poland.
Abstract:
In this study, a novel test system for estimating bending and torsion fatigue under selectable kinematic and dynamic loading modes was constructed. Using S355J2 steel specimens, a series of tests were conducted to determine material sensitivity to different load paths and loading modes. The experimental results were supplemented with the results of numerical analyses, on the basis of which the components of strain and stress tensors for subsequent analyses were determined in the entire working part of the specimen. An original method for determining specific strain energy components was used. The experimental results showed the grouping of data according to the mode of loading chosen. This could signify that the selected fatigue models are sensitive to certain loading scenarios. We performed in- depth data analysis and complex numerical simulations, formulating likely explanations for the observed effect.
Related Concept Videos
Fatigue
Fatigue Strength of Concrete
Stresses under Combined Loadings
The process begins by slicing the tube at critical points and analyzing the internal forces and stress components at these sections, focusing on the centroid. Normal stresses, generated by axial forces and bending moments, are either compressive or tensile and vary across the section from...
Stress: General Loading Conditions
The shearing force, possessing potential directionality within the plane of the section, is simplified into two component forces running parallel to the x and y axes....
Design of Transmission Shafts - Stress Analysis
Mechanical Characteristics of Steel
The tension test is fundamental for determining tensile strength. In this test, a steel specimen is stretched using a gripping device until it breaks. The data collected during this test are used...

