%0 Journal Article
%T CRACK INITIATION POINT DETERMINATION AND DYNAMIC FRACTURE TOUGHNESS FOR CHARPY PRE-CRACKED SPECIMEN
%A LIN Junshan YAN Wenbin TU Mingjing Xi''''an Jiaotong University
%A Xi''''an
%A China
%A
LIN Junshan YAN Wenbin TU Mingjing Xi''''an Jiaotong University
%A Xi''''an
%A China
%J 金属学报(英文版)
%D 1992
%I
%X The method to detect the crack initiation point of Charpy pre-cracked specimen under dy- namie loading was studied using strain gauge.The load-time curve and nominal strain-time curve at the crack tip for impact testing specinens may be shnultaneously measured by twin-channel oscilloscope with high speed sampling and diskette storing.Based on the dynam- ic finite element simulation of impact response of Charpy specimen,the measuring method of dynamic fracture toughness was analysed and some problems in previous dynamic fracture toughness measurement were discussed.
%K crack initiation point
%K strain gauge
%K dynamic fracture toughness
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=C19B08D052F5FD8445F4BB80A1A5D7BF&aid=D0BB31C75BC843CF0E693609238D2ABE&yid=F53A2717BDB04D52&vid=94C357A881DFC066&iid=94C357A881DFC066&sid=9EF602EA28138BEA&eid=05340B75C67FF664&journal_id=1006-7191&journal_name=金属学报(英文版)&referenced_num=0&reference_num=9