%0 Journal Article
%T An Assessment of the Elongation of Fractured Specimen Subjected to Tensile Testing Based on Small Punch Testing<br>小冲杆试验确定材料拉伸断后伸长率的研究
%A GUAN Kai-shu
%A XU Tong
%A SONG Ming
%A ZHAO Li-xun
%A WANG Zhi-wen
%A <br>关凯书
%A 徐彤
%A 宋明
%A 赵立勋
%A 王志文
%J 实验力学
%D 2011
%I 
%X Small Punch Test(SPT) with miniature specimen is a new technique applied to non-destructive evaluation of material mechanical properties.SPT was performed for dozens of materials to investigate the relationship between the axial deflection δ of SPT specimen and the elongation A of the fractured specimen subjected to tensile testing.Experimental results show that there is not a linear relation between δ and A for tested dozens of materials.But according to the ultimate tensile strength and yield-strength ratio,above-mentioned materials can be divided into different groups.Then the axial deflection δ of SPT can be linearly correlated to the A of the fractured specimen subjected to tensile testing in each group respectively.For materials,whose ultimate tensile strength is less than 600MPa,two groups can be devided according to the yield-strength ratio 0.67.A linear empirical correlation formula was proposed for each of group.No obvious correlation was found for materials whose ultimate tensile strength is larger than 600MPa,due to data insufficiency.
%K small punch test
%K elongation after fracture
%K tensile testing<br>小冲杆试验
%K 断后伸长率
%K 拉伸试验
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=5D344E2AD54D14F8&jid=49067A0A0D864088C06A84AACB51A5B2&aid=39DD5026A49510B8264B003D4CE29859&yid=9377ED8094509821&vid=96C778EE049EE47D&iid=0B39A22176CE99FB&sid=79D2EF35F60110C2&eid=1B64850025D0BBBE&journal_id=1001-4888&journal_name=实验力学&referenced_num=0&reference_num=10