%0 Journal Article
%T Reliability of Measured Fractal Dimension and Roughness Exponent as Materials Dimensionless Parameters for Fracture Surfaces
%A Shenggang WANG
%A Hanlong LI
%A Chiwei LUNG
%A <br>ShenggangWANG
%A HanlonKLI
%A ChiweiLUNG
%J 材料科学技术学报
%D 2003
%I 
%X The effects of accuracy of measured fractal dimension D and roughness exponent H are investigated in this paper with a view to examine the reliability of D and H as materials dimensionless parameters of fracture surfaces. D and H are different from general physical quantity, because they are dimensionless quantities and often appear as exponents in a theoretical function or formula. In many cases, the error of the physical quantity related to D or H may far exceed 10%, if D or H has error around 10%. The required accuracy of fractal dimension and roughness exponent should be higher, but it depends on the specific material, the associated physical quantity and the scale of measurement.
%K Frectal dimension
%K Roughness exponent
%K Reliability
%K Fracture<br>材料科学
%K 可靠性
%K 分形维数
%K 粗糙度指数
%K 无量纲参数
%K 断裂
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=324DC3CAB22330DB19158AE0A9B7BFA5&aid=D189F561AB6D8BF8D54813C94D45B4CC&yid=D43C4A19B2EE3C0A&vid=2A8D03AD8076A2E3&iid=94C357A881DFC066&sid=A03A15CF5604A8B0&eid=51F9E747BA1ACB45&journal_id=1005-0302&journal_name=材料科学技术学报&referenced_num=0&reference_num=29