Showing papers by "Yoon Keun Kim published in 1988"

On the rule of mixtures for flow stresses in stainless-steel-clad aluminium sandwich sheet metals

Abstract: The flow stresses in stainless-steel-clad aluminium sandwich sheet metals followed the mixture rule which is an average of component properties weighted by volume fractions, even when transverse stresses were calculated to develop in the component layers due to their different anisotropic plastic behaviours. Such flow stresses in the sandwich sheets were attributed not to negligibly small transverse stresses compared with longitudinal stresses, but to the compensation effects of increased and decreased longitudinal stresses due to tensile and compressive transverse stresses developed in the different component layers.

Tensile properties of stainless steel-clad aluminium sandwich sheet metals

Abstract: The various tensile properties, such as yield strength, tensile strength, strength coefficient, uniform elongation, strain hardening exponent and strain rate sensitivities, of stainless steel-clad aluminium sandwich sheet metals have been analysed on the basis of the fact that the flow stresses of the sandwich sheets follow the rule of mixtures, an average of component properties weighted by the volume fractions. The rule of mixtures can be applied to the tensile strengths and strength coefficients of the sandwich sheets, whereas the yield strengths do not follow the mixture rule. The force weighted average rule, an average of component properties weighted by volume fractions and forces, can be applied to uniform elongations, strain hardening exponents and strain rate sensitivities of the sandwich sheets.