High-velocity, small-particle impact erosion of sapphire windows

1990 ◽  
Author(s):  
Timothy S. Blackwell ◽  
David A. Kalin
Keyword(s):  
Small Particle ◽  
High Velocity ◽  
Particle Impact ◽  
Impact Erosion

Prediction of particle distribution and particle impact erosion in inclined cavities

2017 ◽  
Vol 305 ◽  
pp. 562-571 ◽  
Author(s):  
Zhe Lin ◽  
Yifan Zhang ◽  
Yi Li ◽  
Xiaojun Li ◽  
Zuchao Zhu
Keyword(s):  
Particle Distribution ◽  
Particle Impact ◽  
Impact Erosion

Solid particle impact erosion of alumina-based refractories at elevated temperatures

2012 ◽  
Vol 32 (2) ◽  
pp. 283-289 ◽  
Author(s):  
Jing-Zhou Yang ◽  
Ming-Hao Fang ◽  
Zhao-Hui Huang ◽  
Xiao-Zhi Hu ◽  
Yan-Gai Liu ◽  
...  
Keyword(s):  
Solid Particle ◽  
Elevated Temperatures ◽  
Particle Impact ◽  
Impact Erosion

Single solid particle impact erosion damage on polypropylene

Wear ◽  
1984 ◽  
Vol 100 (1-3) ◽  
pp. 263-280 ◽  
Author(s):  
S.M. Walley ◽  
J.E. Field ◽  
P. Yennadhiou
Keyword(s):  
Solid Particle ◽  
Particle Impact ◽  
Erosion Damage ◽  
Impact Erosion

Response of CVD Boron Carbide to Repetitive Indentation Cycles to Simulate Solid Particle Impact Erosion Mechanisms

2005 ◽  
Author(s):  
K. Bose ◽  
R. J. K. Wood
Keyword(s):  
Boron Carbide ◽  
Solid Particle ◽  
Time Dependent ◽  
Particle Impact ◽  
Solid Particle Erosion ◽  
Degradation Mechanisms ◽  
Particle Erosion ◽  
Contact Loads ◽  
Erosion Mechanisms ◽  
Impact Erosion

Repetitive nanoindentation tests offer a method to examine the time-dependent degradation mechanisms in coatings. In the case of coated systems for tribological and more specifically for erosion resistant applications, repeated indentation cycles can characterise their durability to repeated erodent impact. This paper reports preliminary observations on the response of 13–18 μm thick CVD boron carbide on tungsten carbide substrates to repetitive indentation cycles, at contact loads similar to those generated in previously reported solid-particle erosion tests on these coatings conducted by this laboratory [1].

scholarly journals A Coupled Nonlinear Flow Model for Particle Migration and Seepage Properties of Water Inrush through Broken Rock Mass

Geofluids ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-14
Author(s):  
Wenhao Shi ◽  
Tianhong Yang
Keyword(s):  
Rock Mass ◽  
Small Particle ◽  
High Velocity ◽  
Flow Behavior ◽  
Water Inrush ◽  
Particle Migration ◽  
Nonlinear Flow ◽  
Rock Mass Structure ◽  
Proposed Model ◽  
Seepage Properties

A large number of statistics indicate that broken rock mass always transforms into a flowing channel and leads to water inrush disasters in mining engineering, such as fault, karst, and strongly weathered rock mass. During the process of water inrush, the structure of the broken rock mass is constantly changing due to seepage erosion under high-velocity flow. Therefore, it is of vital importance to quantitatively evaluate the flow behavior of the water inrush related to the seepage erosion in order to prevent or reduce the risks. This study described a coupled nonlinear flow model, which couples the high-velocity seepage, the small particle migration, and the evolution of the broken rock mass structure. The model was verified firstly for simulation of nonlinear flow behavior by comparing with the traditional one. Then, the proposed model was used to simulate the evolution of particle migration and seepage properties of the water inrush through broken rock mass by a numerical case. The simulation results generally agree well with the existing experimental results. The simulations indicate that small particle migration causes the unstable characteristics of the seepage and the heterogeneity properties of the broken rock mass, which lead to the nonlinear flow behavior of the water inrush in both time and space. From a different perspective, it also indicates that the proposed model is capable of simulating the interaction of high-velocity seepage, small particle migration, and evolution of broken rock mass structure in the process of water inrush.

Sign in / Sign up

Export Citation Format

Share Document