A method for the optimal grading of a single interphase layer in metal
-matrix composite laminates for the minimization of residual stresses
is described. The capability to simultaneously ailor some fabrication
parameters is also incorporated. Applications for unidirectional, cros
s-ply and quasi-isotropic graphite/copper laminates are investigated t
o assess the potential of the interphase layer in reducing matrix resi
dual stresses in various laminate configurations. Simultaneous optimiz
ation of interphase and fabrication characteristics appears to be more
effective in decreasing residual stresses. The results also indicate
that the interphase layer is more effective in lowering residual stres
ses in unidirectional composites and selectively within individual pli
es of a laminate. Embedded interphase layers in all the plies did not
produce a significant global reduction in residual stresses.