%0 Journal Article
%T DETERMINATION OF CRITICAL CTOD AND ANALYSISOF INSTABLE RUPTURE ZONE FOR ROCK<br>岩石临界CTOD的确定及失稳断裂过程区的研究
%A Sun Xiutang
%A Chang Cheng
%A Wang Chengyong
%A <br>孙秀堂
%A 常　成
%A 王成勇
%J 岩石力学与工程学报
%D 1995
%I 
%X Some regular patterns about the spread of main crack related to the increasingload and some relationships between formation of the microcrack zone and the load are obtained based on the study of fracture mechanics for the three-point bending specimens ofnotched granite and marble beams.The critical value of CTOD is measured.The effectsupon the fracture zone of the width of COD and the dimensions of rock grain are analysed.
%K critical crack point
%K instable development of crack<br>岩石
%K 临界开裂点
%K 断裂力学
%K 激光散斑法
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=D3421FAA1A0A0F0C&jid=35E747D791A1346351AFB523B7FA35CB&aid=7046B9DEEE6960630DFFCD5E7BCB1A09&yid=BBCD5003575B2B5F&vid=F3583C8E78166B9E&iid=E158A972A605785F&sid=7737D2F848706113&eid=160561E9A96393DE&journal_id=1000-6915&journal_name=岩石力学与工程学报&referenced_num=5&reference_num=4