%0 Journal Article
%T FOURIER TRANSFORM METHOD FOR ANALYSIS OF FATIGUE FRACTOGRAPHS<br>疲劳断口分析的Fourier变换方法
%A YAN Yunhui
%A WANG Dejun
%A HUANG Yuhua
%A WANG Qinghao
%A WANG Tongbo
%A <br>颜云辉
%A 王德俊
%A 黄雨华
%A 王清昊
%A 王彤波
%J 金属学报
%D 1997
%I 
%X The quantitative analysis for fatigue fractography can be realized through the suitable image transform of fatigue fractographs, from which some useful characteristics can be obtained. Two-dimensional discrete Fourier transform is used in the process of fatigue fractograph, and the important characteristics to describe the texture and direction features on a fatigue fracture surface are abstracted from the Fourier power spectrum. A two-dimensional image analysis problem can be simplified as a one-dimensional characteristic curve analysis. The results show that some important characteristics on a fatigue fracture surface can be obtained in space frequency domain by means of two-dimensional discrete Fourier transform, which are impossibly acquired in space domain of fractograph. The method presented in this paper is identified to be a new way to carry out quantitative analysis of fatigue fractography.
%K analysis of fracture surface
%K abstract of characteristic
%K image processing<br>Fourier变换
%K 金属疲劳
%K 疲劳
%K 断口分析
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=17FA1B774290116165CE79027D811012&yid=5370399DC954B911&vid=27746BCEEE58E9DC&iid=E158A972A605785F&sid=B54EB62E9D3FF31E&eid=A22854835F81B3F8&journal_id=0412-1961&journal_name=金属学报&referenced_num=2&reference_num=5