CSpace  > 岩土力学所知识全产出  > 期刊论文
Determination of dynamic rock Mode-I fracture parameters using cracked chevron notched semi-circular bend specimen
Dai, F.1,2; Xia, K.1,2,3; Zheng, H.1,2,3; Wang, Y. X.1,2
2011
Source PublicationENGINEERING FRACTURE MECHANICS
ISSN0013-7944
Volume78Issue:15Pages:2633-2644
AbstractRock dynamic fractures are common in many geophysical processes and engineering applications. Characterization of rock dynamic fracture properties such as the initiation fracture toughness, the fracture energy, and the fracture velocity, is thus of great importance in rock mechanics. A novel method is proposed in this work to measure dynamic Mode-I rock fracture parameters using a cracked chevron notched semi-circular bend (CCNSCB) specimen loaded by a split Hopkinson pressure bar (SHPB) apparatus. A strain gauge is mounted on the sample surface near the chevron notch to detect the fracture onset, and a laser gap gauge (LGG) is used to monitor the crack surface opening distance (CSOD) during the dynamic test. With dynamic force balance achieved in the tests, the stable-unstable transition of the crack propagation crack is observed and the initiation fracture toughness is calculated from the dynamic peak load. The average dynamic fracture energy as well as the fracture propagation toughness are calculated based on the first law of thermodynamics. The measured dynamic fracture properties of Laurentian granite using CCNSCB method are consistent with those reported in the literature using other methods. (C) 2011 Elsevier Ltd. All rights reserved.
KeywordDynamic rock fracture CCNSCB Dynamic initiation toughness Dynamic propagation toughness Fracture energy Stable-unstable crack transition
DOI10.1016/j.engfracmech.2011.06.022
Indexed BySCI
Language英语
WOS Research AreaMechanics
WOS SubjectMechanics
WOS IDWOS:000296267100001
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://119.78.100.198/handle/2S6PX9GI/3308
Collection岩土力学所知识全产出_期刊论文
国家重点实验室知识产出_期刊论文
Affiliation1.Univ Toronto, Dept Civil Engn;
2.Univ Toronto, Lassonde Inst;
3.Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech
Recommended Citation
GB/T 7714
Dai, F.,Xia, K.,Zheng, H.,et al. Determination of dynamic rock Mode-I fracture parameters using cracked chevron notched semi-circular bend specimen[J]. ENGINEERING FRACTURE MECHANICS,2011,78(15):2633-2644.
APA Dai, F.,Xia, K.,Zheng, H.,&Wang, Y. X..(2011).Determination of dynamic rock Mode-I fracture parameters using cracked chevron notched semi-circular bend specimen.ENGINEERING FRACTURE MECHANICS,78(15),2633-2644.
MLA Dai, F.,et al."Determination of dynamic rock Mode-I fracture parameters using cracked chevron notched semi-circular bend specimen".ENGINEERING FRACTURE MECHANICS 78.15(2011):2633-2644.
Files in This Item: Download All
File Name/Size DocType Version Access License
Determination of dyn(1211KB)期刊论文作者接受稿开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Dai, F.]'s Articles
[Xia, K.]'s Articles
[Zheng, H.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Dai, F.]'s Articles
[Xia, K.]'s Articles
[Zheng, H.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Dai, F.]'s Articles
[Xia, K.]'s Articles
[Zheng, H.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Determination of dynamic rock Mode-I fracture parameters using cracked chevron notched semi-circular bend specimen.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.