School of Adult Education;
Shijiazhuang Railway Institute;
Shijiazhuang;
050043;
China Department of Mechanics and Engineering Science;
Shijiazhuang Railway Institute;
Shijiazhuang;
050043;
China Department of Mechanics and Engineering Science;
Shijiazhuang Railway Institute;
Shijiazhuang;
050043;
China;
piezoelectric; material; mode-Ⅲ; edge-crack; intensity; factor; energy; release; rate; boundary; collocation; method;