X-Ray Diffraction Study of Residual Stresses in Metal Matrix Composite-JacketedSteel Cylinders Subjected to Internal Pressure

摘要

The study of aluminum/silicon carbide metal matrix composite (MMC)-jacketed steelstructural components was made because of their light weight and high stiffness. Steel 'liner' cylinders were wrapped with MMC 'jackets' with an all-hoop layup and put through various degrees of hydraulic autofrettage and thermal soak. In this report, the results from our x-ray diffraction residual stress measurements on cylinders using a position-sensitive scintillation detection system are discussed. Our experimental results are compared with theoretical predictions from a model based on the elastic-plastic analysis of a thick-walled cylinder subjected to internal pressure. Interpretation of the interference effect caused by the MMC jacket on the steel liner is also discussed.