Long Term Creep and Stress... Home | Testing Services | Training Courses | Technical Downloads | About Axel | Contact Axel Long Term Creep and Stress Relaxation Tests Introduction... Experiments used to characterize the long term creep or stress relaxation properties of materials are technically challenging in that our objective is to generate a constant... stress or strain over a long time without using costly universal test instruments so that the testing can be cost effective. To do this, simplified test stands are constructed...

Downloads Pricing Dynamic Vibration Data Home> Testing Services> Vibration and Viscoelastic Experiments> Viscoelastic Decay (Short Term Stress Relaxation) If an elastomer is stretched... to a particular strain and held, the stress in the elastomer will decrease over time. This decrease in stress over time is referred to as stress relaxation. This reduction in stress... can be a significant fraction of the initial stress. For many elastomers, the normalized shape of the stress-time function is relatively insensitive to the absolute strain level...

be performed to get a measure of the critical stress and energy required to propagate a crack in a compact tension specimen. A conservative approach to predicting failure is to use... maximum stress and tearing energy information. In this experiment, a cut is introduced into a compact tension test specimen and stretched until the crack grows. This experiment is often... specimens are cycled until failure at various stress levels and mean stresses. To avoid heating, these experiments must be run slowly. As such, plastic fatigue tests take a long time...

of obtaining static stress and strain data or cyclic fatigue data can be challenging. Careful gripping and strain measurement are critical parameters for success. Physical Test...

provide valuable design maximum strain and maximum stress. Fatigue of elastomers is more complex and dependent on many factors. Through a combination of testing and material related... misleading when materials are exposed to cuts or defects. A conservative approach to predicting failure is to use maximum strain, maximum stress and tearing energy information... performed at multiple temperatures. Stress Strain Loading to Crack Initiation Planar Tension Test Specimen with a Pre-cut Crack During Loading Home>Testing Services>Durability...