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Erschienen in:
1980 | OriginalPaper | Buchkapitel
Allowable Strength of Viscoelastic Materials Under Variable Thermal Loads
verfasst von : Robert A. Heller, Mahendra P. Singh
Erschienen in: Thermal Stresses in Severe Environments
Verlag: Springer US
Enthalten in: Professional Book Archive
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Solid propellant rocket motors stored outdoors without thermal protection are subjected to variable amplitude thermal stresses. It has been shown(1,2) that the storage life of such motors can be calculated from the probability of failure that in turn is determined from a stress-strength interference analysis. Such a techique compares the statistical distribution of induced thermal stresses with the distribution of material strength. For visco-elastic materials both the induced stress and the allowable strength are functions of temperature and rate of loading as well as aging and cumulative damage.