%0 Journal Article
%T IMPACT STRENGTH OF STRUCTURAL CERAMICS<br>陶瓷材料的冲击弯曲强度
%A BAO Yiwang LI Xiaorui JIN Zongzhe
%A <br>包亦望
%A 黎晓瑞
%A 金宗哲
%J 材料研究学报
%D 1993
%I 
%X The problems being dealt with in this study include the calculation method ofimpact srength for beam specimen,the relationship between maximum impact force and load-ing speed as well as load-stress relation in dynamic case,and the definition of critical impactparameter.In this paper,the dynamic fracture mechanism of ceramics was analysed and dis-cussed.It was considered that the degree of brittleness depends on cracking rate of materilas.Insome cases,the reliability of brittle ceramics is not in proportion to strength.Experiments of im-pact bending strength at different impact speed were performed on two kinds of ceramics.Thetheoretical and experimental curves about the dependance of strength on impact speed werepersented.
%K structural ceramics
%K impact strength
%K critical evaluation
%K inertia force<br>结构陶瓷
%K 冲击强度
%K 临界评价
%K 惯性力
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=C101C4C04993B4D94FCD8446E6CBEB3B&aid=E5E5EEC966449A85&yid=D418FDC97F7C2EBA&vid=DF92D298D3FF1E6E&iid=0B39A22176CE99FB&sid=2B5DE8A23DCEED39&eid=6FBD78E3BAB60869&journal_id=1005-3093&journal_name=材料研究学报&referenced_num=0&reference_num=1