Stress intensity factors around two co-planar Griffith cracks in an orthotropic layer sandwiched between two identical orthotropic half planes

Abstract

An integral transform technique is employed to solve the elastodynamic problem of steady-state propagation of two collinear Griffith cracks located in an orthotropic elastic layer of finite thickness 2 h sandwiched between two identical orthotropic half planes. For large h analytical expressions for the stress intensity factors are determined up to the order h −4. Graphical plots of the numerical results are also presented.