On the influence of ply-angle on damping and modulus of elasticity of a metal-matrix composite Academic Article uri icon

abstract

  • The central objective of the classical laminate theory is to predict the properties of a laminate having an arbitrary lay-up, taking as its input the measured properties of an individual lamina. Whereas a fair amount of work has been done concerning the prediction of the laminate stiffness, relatively little attention has been paid to the prediction of laminate damping. A recent model by Ni and Adams[1] fills this gap. The model is not exact and, of necessity, is based on some simplifying assumptions. The objective of this paper is to compare the predictions of their model with the results of a careful and detailed experimental investigation of the problem as it concerns metal-matrix composites. Flexural modulus and flexural damping of a continuous graphite/ aluminum composite of [±θ] s lay-up were measured for θ = 0, 15, 30, 45, 60, 75, and 90 deg. These were compared with the predictions of a slightly modified form of the Ni and Adams model; the model was modified to include the e{open} y, σ y, and τ xy terms which were ignored in the earlier work, where (x, y, z) is the laminate coordinate system. Excellent agreement between the theory and experimental results was observed. © 1991 The Minerals, Metals and Materials Society, and ASM International.

published proceedings

  • Metallurgical Transactions A

author list (cited authors)

  • Kinra, V. K., Wren, G. G., Rawal, S. P., & Misra, M. S.

complete list of authors

  • Kinra, Vikram K||Wren, Graeme G||Rawal, Suraj P||Misra, Mohan S

publication date

  • January 1, 1991 11:11 AM