In　this　paper,　a　code　of　finite　element　method　is　developed　for　numerical　simulation　of　electromagnetic　acoustic　testing　(EMAT)　signals.　In　order　to　improve　the　simulation　efficiency　of　ultrasonic　field,　a　new　explicit　integration　algorithm　of　time　domain　is　introduced.　As　an　application,　the　feasibility　of　a　newly　proposed　transducer　of　EMAT　type　is　verified　by　using　the　new　code　for　detecting　delaminating　defect　in　Thermal　Barrier　Coating　(TBC).