In fatigue testing, R is the ratio of the minimum to the maximum occurring during one period of a cycle. If the mean value... Continue reading
William Mars, Ph.D., P.E.
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Tag: Wohler Curve
William Mars, Ph.D., P.E. 
It has been 20 years since Critical Plane Analysis for rubber was first conceived and validated. There were early signs of its significance. It won... Continue reading
William Mars, Ph.D., P.E. 
Because Endurica’s Critical Plane Analysis is a relatively new approach to fatigue analysis of elastomers (introduced in 2001), new users often ask whether its predictions... Continue reading
William Mars, Ph.D., P.E.
Endurica uses a fracture mechanics based description of rubber’s fatigue behavior, rather than the classical Wohler curve (ie S-N curve) approach. This is why: 1)... Continue reading
William Mars, Ph.D., P.E.