Transient responsc of an annular crack in a plate of a functionallygraded piezDelectric m 烈 teria1 ( FGPM )is studied under thermal shock load [ ng collditiolls . It is assumed that the t[ herm 〔 〕electroelas ・ tic pr 〔 〕 perties of the strip vary continuousIy along the thickness Dfthc strip , and that the crack faces are completely insulated . SDme material propcrties are assunled to be exponentially dependent on the distance fromthc crack line paralel † o the boundaries of the plate . By using b { }th the Lapluce and Hankel trallsforms , the thermal ancl electrome ⊂hallical problems are reduced to a singular integral equa 亡 i〔,n and a system of singular { ntegral equations . The singular integrul equatiens are solved numerically , and a numerical method is then enlployed to obtain 出 e 亡 ime dependent solutio 】 rsby way of a Laplace inversiun technique . The intensity factors versus time are presented for various values of dimensionless paralneters representing the lnaterial nonhoinegeneit ) ・ and the crack positior /.