Fatigue properties composites, compressive

Heat BuUdup and Compression Fatigue - Heat buildup in elastomers is the accumulation of thermal energy and resultant temperature increase in a rubber product due to internal friction when the product is subjected to repeated, rapid cychc deformation. The loss in properties of an elastomer due to heat buildup and other molecular effects of dynamic deformation is known as fatigue. Elastomeric compositions which show the least heat... 

The objective of the present study is to measure compressive fatigue properties of commercially available composite restorative materials as a function of stress level and to relate these properties to the microstructures of the materials. 

Materials selection process can be depicted in terms of Figure 1.40. Materials selection involves many factors that have to be optimized for a particular application. The foremost consideration is the cost of the material and its applicability in the environmental conditions so that integrity can be maintained during the lifetime of the equipment. When the material of construction is metallic in nature, the chemical composition and the mechanical properties of the metal are significant. Some of the important mechanical properties are hardness, creep, fatigue, stiffness, compression, shear, impact, tensile strength and wear. 

Lifschitz JM, Compressive fatigue and static properties of a UD graphite/epoxy composite,... 

Polyurethane elastomers are promising materials for solid tires and track pads for tanks. There is little systematic study reported of the relationship between the specific chemical compositions of a series of chemically similar polyurethanes and their hysteresis and other properties thought to influence elastomer performance on heavy vehicles. In this work, the characteristics of a group of polyurethanes are reported, including the thermal properties, mechanical properties at elevated temperatures, hardness, tear strength and compressive fatigue behavior. Abrasion resistance is also an important property, but the correlation between laboratory tests and road tests is frequently poor. Abrasion resistance will not be discussed here. 

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