抄録
Development of the linear inhomogeneous layer element LILE, orients specially to a numerical computation of elastic wave backsctter from a gradient inhomogeneous layered masterial. The stacking of LILE provides us an excellent model for the material. Reflectance curves developed as a function of the incident wave number are presented in a wide frequency range, and discussed on the relation between layered structures of a composite and the backsctter intensity. The results show that number of peaks coming up in the curves informs us the detail of layering structure.
