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Measurement of Residual Stresses in Thick Composite Cylinders by the Radial-cut-cylinder-bending Method by Jong Woon Kim; Dai Gil Lee is a Engineering article available to read on EtoBox.

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Thick fabric composite cylinders for nozzle parts in solid rocket motors should be designed to endure the extreme temperature and pressure of combustion gas. As the thickness of the composite cylinder increases, fabricational residual stresses due to the anisotropic thermal expansion or shrinkage of fabric composites also increase, which induces inter-laminar failures. Therefore, the accurate estimation of the residual stresses is indispensable for the development of thick fabric composite cylinders. In this paper, the residual stresses in thick cylinders made of carbon fabric phenolic composites were measured by a new radialcut-cylinder-bending method. To obtain the residual stresses from the measured relative strains during the radial-cut operation, a bending test of the cylinder with the radial-cut was performed instead of measuring the material properties with respect to radial positions. The thermal residual stresses were also calculated by finite element method considering shear deformation of fabric layers, and compared with the measured residual stresses by the new method, from which it was found that the new simple method estimated the residual stresses pretty well. Also t

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Author

Jong Woon Kim; Dai Gil Lee

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0263-8223)

Published

2007

Language

EN

Field

Engineering (Physical Sciences)