Fractal breakage of porous carbonate sand particles: Microstructures and mechanisms

HY Li, HW Chai, XH Xiao, JY Huang, SN Luo - Powder Technology, 2020 - Elsevier
Abstract In situ, three-dimensional (3D) characterizations of particle breakage in porous
carbonate sands are presented, for the first time, with synchrotron-based micro computed …

[HTML][HTML] Lightweight shear stiffening gel with enhanced mechanical and thermal-insulating performance for advanced fire suit

T Xuan, S Wang, S Sun, H Deng, W Wang… - Composites Part A …, 2023 - Elsevier
Herein, a lightweight and thermal-insulating shear stiffening gel (LT-SSG) with anti-impact
was prepared by introducing insulating glass microspheres BR20 into SSG. The density of …

Experimental study on the coefficient of restitution of grain against block interfaces for natural and engineered materials

CS Sandeep, K Senetakis, D Cheung… - Canadian …, 2021 - cdnsciencepub.com
The coefficient of restitution (COR) is an important input parameter in the numerical
simulation of granular flows, as it governs the travel distance, the lateral spreading, and the …

Dynamic breakage of double glass spheres chain subjected to impacting loading

C Miao, S Xu, J Lu, L Yuan, P Wang - International Journal of Mechanical …, 2022 - Elsevier
Strain energy releasing due to local failure plays an important role in the dynamic breakage
of the brittle medium. A series of experiments are conducted based on the Split Hopkinson …

Effect of grain size and surface roughness on the normal coefficient of restitution of single grains

CS Sandeep, L Luo, K Senetakis - Materials, 2020 - mdpi.com
The coefficient of restitution (COR) represents the fraction of pre-collision kinetic energy
remained after the collision between two bodies. The COR parameter plays an important …

3D DEM analysis of analogue proppant–fractured rock system interaction

SS Kasyap, H He, K Senetakis - Bulletin of Engineering Geology and the …, 2022 - Springer
We investigated the interaction of proppant simulant (impactor) colliding on the surface of a
fractured rock by performing 3-dimensional discrete-based numerical simulations. The …

Characterisation of fracture evolution of a single cemented brittle grain using in-situ X-ray computed tomography

S Jiang, L Shen, F Guillard, I Einav - International Journal of Rock …, 2021 - Elsevier
In this paper, the diametrical fragmentation of a single brittle glass bead cemented by ductile
epoxy resin is studied using in-situ X-ray computed tomography, focusing on the fractures …

An experimental study of aggregate shape effect on dynamic compressive behaviours of cementitious mortar

S Jiang, L Shen, W Li - Construction and Building Materials, 2021 - Elsevier
An experimental investigation is conducted to study the effect of aggregate shape on mortar
dynamic failure behaviours. Split Hopkinson bar device is employed to compress cylindrical …

Laboratory and discrete‐based numerical investigation on the collision problem of impactor‐block systems with soft‐porous and hard‐crystalline analog rocks

L Luo, SS Kasyap, H He… - International Journal for …, 2022 - Wiley Online Library
We investigated experimentally the normal coefficient of restitution (COR) of impactors
colliding on the surfaces of two different blocks; a soft‐porous block composed of plaster (dry …

[PDF][PDF] Al2O3 陶瓷动静态压缩下碎片形貌与破坏机理分析

谈瑞, 李海洋, 黄俊宇 - EXPLOSION AND SHOCK WAVES, 2020 - bzycj.cn
为探究Al2O3 陶瓷的宏观力学响应与破坏机理, 分别利用材料试验机和分离式霍普金森压杆对其
进行准静态和动态压缩实验, 同时通过原位光学成像观测试样的破坏过程, 并利用同步辐射CT …