Materials testing ensures quality by subjecting materials and products to controlled conditions to evaluate properties and behavior under stress. Learn how mechanical, physical, and chemical properties are evaluated to determine suitability for different applications.
Fatigue testing is unique in that it repeatedly exposes parts to “real-world” conditions, producing data and results that helps manufacturers predict the part’s durability.
Under controlled conditions and with appropriate test equipment, compression testing provides quality engineers, inspectors, and research professionals with data they need to determine a material or component’s physical characteristics for quality assurance, design suitability, and customer satisfaction.
Fatigue is a failure mechanism caused by repeated cyclic loading that leads to cumulative damage within a material, and ultimately catastrophic failure. “Between 80% to 90% of all mechanical service failures can be attributed to Fatigue,” according to the American Society of Metals – Metals Handbook 1975 & 2008.
As one of the most common mechanical components in the world, roller elements are of critical importance. It is necessary for bearings and raceways to be carefully engineered and manufactured so that the machines which use them are as safe and stable as possible.
In the near future, critical aerospace and automotive production parts may indeed come from a 3D printer. The technology’s potential is huge, agrees ASTM Fellow Steven Daniewicz.
Fatigue testing varies greatly from application to application. Below are some of the top six examples to showcase how fatigue testing has become invaluable in a range of industries.
The many variables associated with material type, sample geometry and in service use of a part or component complicates the design and implementation of an appropriate fatigue testing regime.
Since 1850 we have known that metal subjected to fluctuating stresses will fail at a stress much lower than required to cause fracture on a single quasi static pull to break.