What is it about?
Cyclic loading can cause material failure even at relatively low loads. Material fatigue is the reason, and testing of this material property is very important for safe design of mechanically loaded components. Accelerated testing is possible by increasing the testing frequency to the ultrasonic range. A high accuracy equipment for ultrasonic fatigue testing of materials is described and used to study a high strength aluminium alloy and additively manufactured stainless steel.
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Why is it important?
Fatigue of materials is a statistical process. Many specimen have to be tested with high numbers of load cycles to characterize their fatigue strength. This leads to long testing times and high costs. Time and cost can be saved with the described high frequency testing method.
Perspectives
The article describes a high precision ultrasonic equipment, which helps to accurately measure the fatigue properties of materials. Measurement artifacts can be avoided and valid material data can be obtained, if the described method is applied.
Bernd Schönbauer
Read the Original
This page is a summary of: Very High Cycle Fatigue Data Acquisition Using High-Accuracy Ultrasonic Fatigue Testing Equipment, Materials Performance and Characterization, June 2023, ASTM International,
DOI: 10.1520/mpc20220113.
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