Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.ijimpeng.2009.07.003
Title: Determination of inelastic heat fraction of OFHC copper through dynamic compression
Authors: Zhang, B. 
Shim, V.P.W. 
Keywords: Dynamic compression
FEM
Inelastic heat fraction
Infrared thermography
OFHC copper
Issue Date: Jan-2010
Source: Zhang, B., Shim, V.P.W. (2010-01). Determination of inelastic heat fraction of OFHC copper through dynamic compression. International Journal of Impact Engineering 37 (1) : 50-68. ScholarBank@NUS Repository. https://doi.org/10.1016/j.ijimpeng.2009.07.003
Abstract: An approach to determine the inelastic heat fraction (IHF) value of metal by high-speed compression is established by combining dynamic deformation, infrared (IR) photography and finite element simulation. OFHC copper specimens are dynamically compressed and infrared thermographs captured at a rate of 1000 images/s. FEM simulation of the deformation is undertaken and the initial IHF value input adjusted until the computed average surface temperature matches the experimental data. It is found that for the IHF value identified, the predicted surface temperature distribution also exhibits good correlation with experimental results. For final strains in the range of 44-60%, a consistent IHF value of 0.68 is obtained. Using this value, the surface temperature of a sample deformed to a different final strain and at a different strain rate is predicted by FEM simulation and the numerical results show good agreement with test data in terms of average surface temperature and surface temperature distribution. The temperature field for the entire specimen is also predicted. Results indicate that high-speed compression at a strain rate of 1000/s to a final engineering strain of 70% may result in initiation of dynamic recovery in OFHC copper. © 2009 Elsevier Ltd. All rights reserved.
Source Title: International Journal of Impact Engineering
URI: http://scholarbank.nus.edu.sg/handle/10635/51372
ISSN: 0734743X
DOI: 10.1016/j.ijimpeng.2009.07.003
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

10
checked on Dec 6, 2017

WEB OF SCIENCETM
Citations

9
checked on Nov 22, 2017

Page view(s)

72
checked on Dec 10, 2017

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.