%0 Journal Article
%T Measurement of Dynamic J-Integral of Materials on a Bar-Impact Testing, Machine<br>杆式冲击装置测定材料动态J积分
%A Fang Chunan Xu Xiaohe
%A <br>唐春安
%A 徐小荷
%J 实验力学
%D 1988
%I 
%X An experimental technique for measuring dynamic fracture toughness under the action of stress wave is described in this paper. A 3-point bending specimen is loaded dynamically with a Bar-Impact Testing Machine. Since there exists relationship among load, displacement and impact velocity for long bar, the displacement and J-integral can be calculated from recorded load-time curve. The testing process becomes much simpler and the basis for analysis is much more reliable in comparison with the widely used pendulum impact method.
%K impact testing
%K dynamic J-integral<br>冲击试验
%K 动态J积分
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=5D344E2AD54D14F8&jid=49067A0A0D864088C06A84AACB51A5B2&aid=E6A2ED007AE74193039C22BBF2FD35CB&yid=0702FE8EC3581E51&vid=38B194292C032A66&iid=E158A972A605785F&journal_id=1001-4888&journal_name=实验力学&referenced_num=0&reference_num=0