Elastomers mechanical fatigue

Mars, W.V., Comparison of fatigue crack growth characterizations made at several labs, presented at Fracture Mechanics for Elastomers 50 Not Out, Proceedings of Anniversary Meeting Tun Abdul Razak Research Centre, Hertford, United Kingdom, 2008. 

Mechanical Properties Stress-strain, Elasticity, DuctiUty Fatigue, Fracture, Creep Viscoelasticity, Elastomers Laminates Sutures, Bone, Teeth... 

Baumgartner et al. (9) compared the thermal and mechanical degradation of filled and unfilled elastomers. They were particularly interested in the long-term aging and fatigue behavior of solid propellants filled with ammonium perchlorate or potassium chloride. They reported that the mechanisms for thermally and mechanically induced decomposition of the propellant binder appear equivalent. At low temperatures, mechanical processes control the decomposition rates of the polymers, whereas thermal processes control the decomposition at high temperature. They further note that, "Equivalence of thermal and mechanical degradation... 

Polymer wear can take place in various modes, e.g., adhesive, abrasive, transfer, fatigue, and tribo-chemical. In reality, several mechanisms can also operate simultaneously. If impaction is involved, an impact wear can be the chief mechanism. The predominance of any one type of wear can be influenced by the form of polymers, e.g., thermoplastics, elastomers or composites. 

L. H. Sperling, J. A. Manson, G. M. Yenwo, N. Devia-Manjarres, J. Pulido, and A. Conde, Novel Plastics and Elastomers from Castor Oil Based IPN s A Review of an International Program, in Polymer Alloys, D. Klempner and K. C. Frisch, eds.. Plenum, New York (1977). Castor oil-urethane/polystyrene sequential IPNs. Synthesis, morphology, and mechanical behavior. Fatigue behavior. 

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