典型文献
A simple method for determining independent fracture toughness and tensile strength of rock
文献摘要：
This paper develops a model that only requires two sets of small-size rock specimens with the ratio of the structural geometry parameter maximum to minimum ae,max:ae,min≥3:1 to determine the rock fracture and strength parameters without size effect and predict the actual structural performance of rock.Regardless of three-point-bending,four-point-bending,or a combination of the above two specimen types,fracture toughness KIc and tensile strength ft of rock were determined using only two sets of spec-imens with ae,max:ae.miin≥3:1.The values KIc and ft were consistent with those determined using multiple sets of specimens.The full structural failure curve constructed by two sets of small-size specimens with ae.max:ae.min≥3:1 can accurately predict large-size specimens fracture failure,and±10％upper and lower limits of the curve can encompass the test results of large-size specimens.The peak load prediction curve was constructed by two sets of specimens with ae,max:ae,min≥3:1,and±15％upper and lower limits of the peak load prediction curve can cover the small-size specimen tests data.The model and method proposed in this paper require only two sets of small-size specimens,and their selection is unaffected by the spec-imen type,geometry,and initial crack length.
文献关键词：
中图分类号：
作者姓名：
Junfeng Guan;Yulong Zhang;Jiangfeng Meng;Xianhua Yao;Lielie Li;Shuanghua He
作者机构：
School of Civil Engineering and Communication,North China University of Water Resources and Electric Power,Zhengzhou 450045,China;State Key Laboratory of Hydraulics and Mountain River Engineering,Sichuan University,Chengdu 610065,China
文献出处：
引用格式：
[1]Junfeng Guan;Yulong Zhang;Jiangfeng Meng;Xianhua Yao;Lielie Li;Shuanghua He-.A simple method for determining independent fracture toughness and tensile strength of rock)[J].矿业科学技术学报（英文版）,2022(04):707-726
A类：
KIc,miin,imen
B类：
simple,method,determining,independent,fracture,toughness,tensile,strength,rock,This,paper,develops,model,that,only,requires,two,sets,small,size,specimens,ratio,structural,geometry,maximum,minimum,ae,parameters,without,effect,actual,performance,Regardless,three,point,bending,four,combination,above,types,ft,were,determined,using,values,consistent,those,multiple,full,failure,curve,constructed,by,can,accurately,large,upper,lower,limits,encompass,results,peak,load,prediction,was,cover,tests,data,proposed,this,their,selection,unaffected,initial,crack,length
AB值：
0.373073
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