Weight function in a bimaterial strip containing an interfacial crack   and an imperfect interface. Application to Bloch-Floquet analysis in a thin   inhomogeneous structure with cracks
  We define a weight function in a bi-material strip containing a semi-infinite crack and an imperfect interface and analyse a problem of anti-plane shear. We then present an asymptotic algorithm which uses the weight function to evaluate the coefficients in asymptotics of solutions to problems of wave propagation in a thin bi-material strip containing a periodic array of cracks situated at the interface between two materials. 
A. Vellender, G.S. Mishuris and A.B. Movchan
math-ph math.MP