砂岩中模式 III 断裂在动态和静态载荷下的差异响应特征

IF 3.1 2区材料科学 Q2 ENGINEERING, MECHANICAL

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-12-30 DOI:10.1111/ffe.14538

Xiaofeng Qin, Haijian Su, Liyuan Yu, Hao Wang, Ying Jiang, Thi Nhan Pham

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Differential Response of Fracture Characterization of Mode III Fracture in Sandstone Under Dynamic Versus Static Loading

This work examines the effect of loading rate ( $\overset{\cdot}{K}$ ) on the mode III fracture behavior of sandstone. Edge-notched diametrically compressed (ENDC) disc sandstone specimens were tested under different static and dynamic mode III fracture loadings, revealing a clear loading rate effect on both mode III and mode I fractures. Specifically, the peak load and fracture toughness (K_IIIC, K_IC) increase as the $\overset{\cdot}{K}$ increases across both static and dynamic scales. At the static scale, the K_IIIC is about 1.28–1.38 times of the K_IC, whereas at the dynamic scale, the K_IIIC is less than the K_IC. The relationship between K_IIIC and K_IC is affected by the loading scale and the shape of the specimen, but the data collected thus far indicate that the origin and type of rock have minimal effect on this relationship. In addition, the fracture surface morphology characteristics were quantitatively analyzed.

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来源期刊

Fatigue & Fracture of Engineering Materials & Structures 工程技术-材料科学：综合

CiteScore

6.30

自引率

18.90%

发文量

256

审稿时长

4 months

期刊介绍： Fatigue & Fracture of Engineering Materials & Structures (FFEMS) encompasses the broad topic of structural integrity which is founded on the mechanics of fatigue and fracture, and is concerned with the reliability and effectiveness of various materials and structural components of any scale or geometry. The editors publish original contributions that will stimulate the intellectual innovation that generates elegant, effective and economic engineering designs. The journal is interdisciplinary and includes papers from scientists and engineers in the fields of materials science, mechanics, physics, chemistry, etc.