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Eintrag vom: 03.12.2013.

You probably know how much money you get each month and how quickly it all gets spent. Taking the time to work out your budget really does help to see where your money is going. I

 

The purpose of this study is to give an insight on the existing fatigue criteria for rubbers and their capability to predict the fatigue life of a carbon-filled styrene?butadiene rubber (SBR...

 

In materials science fatigue is the initiation and propagation of cracks in a material due to cyclic loading. Once a fatigue crack has initiated it grows a small amount with each loading cycle typically producing striations on some parts of the fracture surface. The crack will continue to grow until it reaches a critical size which occurs when the stress intensity factor of the crack ...

 

In this study the main purpose is to analyze the fatigue failure of thermoplastic polyurethane (TPU) plate under tension-tension load control tests (frequency = 5 Hz stress ratio = 0.1) and...

 

Yang et al. [149] compared sulfur and peroxide-vulcanized SBR in their work. They concluded that the samples crosslinked with sulfur have a significantly longer fatigue life compared with the peroxide-cured ones.

 

The purpose of this study is to provide an overview of the state of the art on fracture mechanics with primary focus on different methodologies available for crack initiation and growth prediction in rubber-based materials under the static and fatigue loading conditions.

 

For the majority of the fatigue tests a stress ratio (R=minimum stress/maximum stress) of R=0 was used. Additionally a number of preliminary tests were conducted with R=0.125 and R=0.20. The tests were continued until specimen fracture or achieving a very high number of cycles; e.g. two tests on S22 bars were extended to over 18 million cycles.

 

Design engineers in the industry are facing considerable challenges in achieving the fatigue requirement of products within a tight time frame. An adequate simple practical and reasonably accurate criterion would be desirable.

 

Stress ratio corresponding to the ratio of minimum to maximum stress is a critical factor that affects fatigue behavior in rubber materials.