Effect of cyclic wetting and drying on the pure mode II fracture toughness of sandstone

被引：77

作者：

Hua, Wen ^{[1
]}

Dong, Shiming ^{[1
]}

Li, Yifan ^{[1
]}

Wang, Qingyuan ^{[1
]}

机构：

[1] Sichuan Univ, Coll Architecture & Environm, Chengdu 610065, Peoples R China

来源：

ENGINEERING FRACTURE MECHANICS | 2016年 / 153卷

基金：

中国国家自然科学基金;

关键词：

Sandstone; Wetting-drying; Cracked straight-through Brazilian disk; Pure mode II; Fracture toughness; STRESS INTENSITY FACTORS; BRAZILIAN DISC SPECIMEN; MECHANICAL-PROPERTIES; BRITTLE-FRACTURE; T-STRESS; ROCK; PARAMETERS; BEHAVIOR;

D O I：

10.1016/j.engfracmech.2015.11.020

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The effect of cyclic wetting and drying on the fracture toughness and crack propagation of rock has been studied using centrally cracked Brazilian disk specimens. The results show that the failure characteristics of sandstone change from brittle to ductile at higher wetting-drying cycles. With increase in the wetting-drying cycles both K-IIC and K-IC decrease, furthermore, the degradation degree of K-IIC is always larger than that of K-IC. The ratio of K-IIC to K-IC decreases with increase in the number of wetting-drying cycles. The experimental results and theoretical values of the fracture criterion agree very well with each other. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：143 / 150

页数：8

共 30 条

[1] Mode I and mode II fracture toughness testing for a coarse grain marble [J].

Aliha, M. R. M. ;

Ashtari, R. ;

Ayatollahi, M. R. .

MODERN PRACTICE IN STRESS AND VIBRATION ANALYSIS VI, PROCEEDINGS, 2006, 5-6 :181-+

[2] Mixed mode I/II brittle fracture evaluation of marble using SCB specimen [J].

Aliha, M. R. M. ;

Ayatollahi, M. R. .

11TH INTERNATIONAL CONFERENCE ON THE MECHANICAL BEHAVIOR OF MATERIALS (ICM11), 2011, 10

[3]

ATKINSON C, 1982, INT J FRACTURE, V18, P279

[4] On the use of Brazilian disc specimen for calculating mixed mode I-II fracture toughness of rock materials [J].

Ayatollahi, M. R. ;

Aliha, M. R. M. .

ENGINEERING FRACTURE MECHANICS, 2008, 75 (16) :4631-4641

[5] Wide range data for crack tip parameters in two disc-type specimens under mixed mode loading [J].

Ayatollahi, M. R. ;

Aliha, M. R. M. .

COMPUTATIONAL MATERIALS SCIENCE, 2007, 38 (04) :660-670

[6] Cracked Brazilian disc specimen subjected to mode II deformation [J].

Ayatollahi, MR ;

Aliha, MRM .

ENGINEERING FRACTURE MECHANICS, 2005, 72 (04) :493-503

[7] Effects of loading-unloading and wetting-drying cycles on geomechanical behaviors of mudrocks in the Colombian Andes [J].

Camilo Torres-Suarez, Mario ;

Alarcon-Guzman, Adolfo ;

Berdugo-De Moya, Rafael .

JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING, 2014, 6 (03) :257-268

[8]

Deng Huafeng, 2014, Earth Science - Journal of China University of Geosciences, V39, P108, DOI 10.3799/dqkx.2014.011

[9]

[邓华锋 Deng Huafeng], 2012, [岩石力学与工程学报, Chinese Journal of Rock Mechanics and Engineering], V31, P1342

[10] Stress intensity factors for central cracked circular disk subjected to compression [J].

Dong, SM ;

Wang, Y ;

Xia, YM .

ENGINEERING FRACTURE MECHANICS, 2004, 71 (7-8) :1135-1148

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