scholarly journals Multi-scale modeling of composites subjected to high speed impact

2017 ◽  
Author(s):  
Minhyung Lee ◽  
Myung S. Cha ◽  
Nam H. Kim
Keyword(s):  
High Speed ◽  
High Speed Impact ◽  
Multi Scale ◽  
Scale Modeling ◽  
Multi Scale Modeling

Multi-Scale Modeling of Composites with Surrogate and Uncertainty in Residual Velocity for High-Speed Impacts

2018 ◽  
Vol 10 (01) ◽  
pp. 1850006
Author(s):  
Minhyung Lee ◽  
Nam H. Kim
Keyword(s):  
Test Data ◽  
High Speed ◽  
Impact Test ◽  
Tensile Tests ◽  
Residual Velocity ◽  
High Speed Impact ◽  
Multi Scale ◽  
Scale Modeling ◽  
Numerical Predictions ◽  
Multi Scale Modeling

The bullet impact onto a composite plate has been investigated both numerically and experimentally. The main purpose is to numerically identify the range of uncertainty shown in the residual velocities from the high-speed impact test data. The simulation is based on the multi-scale modeling for composites. The experimental results presented here include the tensile tests of composite specimen to identify the range of failure strains and mainly the ballistic shot test onto a laminated plate to measure the residual velocities with especial interests in the range of uncertainty. All test data have been compared with numerical predictions and the scattered test data are reasonably well captured with simulations.

Understanding Deformation on Machined Surfaces

2014 ◽  
Author(s):  
Yang Guo ◽  
Dinakar Sagapuram ◽  
Anirban Mahato ◽  
Rachid M’Saoubi ◽  
Kevin P. Trumble ◽  
...  
Keyword(s):  
High Speed ◽  
Chip Thickness ◽  
Rake Angle ◽  
Surface Strain ◽  
Deformation History ◽  
Machined Surface ◽  
Multi Scale ◽  
Scale Modeling ◽  
Multi Scale Modeling ◽  
Machined Surfaces

The deformation history and state of machined surface in cutting of metals are characterized using high-speed image analysis, complemented by hardness, microstructure and texture measurements. Large surface strains are observed, due to the severe plastic deformation (SPD) intrinsic to chip formation. The deformation history and microstructure/texture of the chip and surface are found to be equivalent. The surface strain distribution is shown to scale with undeformed chip thickness and influenced by the rake angle. Based on the observations, and related prior work on process-microstructure-property correlations, a framework is suggested for controlling deformation levels, microstructure and texture on machined surfaces. The results offer scope also for validation of machining simulations and multi-scale modeling of machining.

Multi-Scale Modeling of Cementitious Materials (Briefing Chart)

2014 ◽  
Author(s):  
M. M. Shahzamanian ◽  
T. Tadepalli ◽  
A. M. Rajendran ◽  
W. D. Hodo ◽  
R. Mohan ◽  
...  
Keyword(s):  
Cementitious Materials ◽  
Multi Scale ◽  
Scale Modeling ◽  
Multi Scale Modeling

Multi-Scale Modeling of Neural Structure in X-Ray Imagery

2021 ◽  
Author(s):  
Aishwarya Balwani ◽  
Joseph Miano ◽  
Ran Liu ◽  
Lindsey Kitchell ◽  
Judy A. Prasad ◽  
...  
Keyword(s):  
Neural Structure ◽  
X Ray ◽  
Multi Scale ◽  
Scale Modeling ◽  
Multi Scale Modeling

Multi-scale modeling and experimental study of fatigue of plain-woven SiC/SiC composites

2021 ◽  
pp. 106725
Author(s):  
Hongnian Dong ◽  
Xiguang Gao ◽  
Sheng Zhang ◽  
Guoqiang Yu ◽  
Yingdong Song ◽  
...  
Keyword(s):  
Experimental Study ◽  
Multi Scale ◽  
Scale Modeling ◽  
Multi Scale Modeling ◽  
Sic Composites
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