%0 Journal Article
%T 3D TOPOGRAPHY OF FRACTURED SURFACES AND MECHANICAL PROPERTIES UNDER INSTRUMENTED IMPACT LOADING<br>系列示波冲击断口三维形貌几何特征和断裂性能
%A ZHU Ping
%A CHEN Bingsen
%A <br>朱平
%A 陈丙森
%J 金属学报
%D 1998
%I 
%X The dynamic fracture properties of P460NLl steel were tested under instrumented impact loading at different test temperatures. The 3D topography of fractured surfaces was reconstructed and quantified by the means of SEM stereo pairs, image processing and analysis, and computer vision. It was shown that measured 3D roughness indexes Rs, Rq and Rmax have good positive relations to the crack propagation part of absorbed impact energy. Although fractal behavior had been checked out on the fractured surfaces, the fractal dimension was found nonsensitive to the fracture mode and mechanical properties. The geometric characteristics of fractal fractured surfaces should be quantified in fractal dimension together with absolute parameters.
%K quantitative fractography
%K instrumented impact test
%K 3D topography
%K roughness
%K fractal
%K fracture property<br>示波冲击
%K 三维形貌
%K 断裂性能
%K 焊接结构钢
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=5175C9D46105FE5D0D9530A500856FE4&yid=8CAA3A429E3EA654&vid=339D79302DF62549&iid=CA4FD0336C81A37A&sid=E84BBBDDD74F497C&eid=CB423C9A71560A74&journal_id=0412-1961&journal_name=金属学报&referenced_num=2&reference_num=2