Imperial College London
Mr Andy Pullen

MrAndyPullen

Faculty of Engineering, Department of Civil and Environmental Engineering

Research Fellow
 
 
 
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Contact

 

a.pullen

 
 
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Location

 

320Skempton BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Jung:2016:10.1016/j.compositesa.2016.02.031,
author = {Jung, A and Pullen, AD and Proud, WG},
doi = {10.1016/j.compositesa.2016.02.031},
journal = {Composites Part A - Applied Science and Manufacturing},
pages = {1--11},
title = {Strain-rate effects in Ni/Al composite metal foams from quasi-static to low-velocity impact behaviour},
url = {http://dx.doi.org/10.1016/j.compositesa.2016.02.031},
volume = {85},
year = {2016}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Metal foams are used as absorbers for kinetic energy but predominantly, they have only been investigated under quasi-static load-conditions. Coating of open-cell metal foams improves the mechanical properties by forming of Ni/Al hybrid foam composites. The properties are governed by the microstructure, the strut material and geometry. In this study, the strain-rate effects in open-cell aluminium foams and new Ni/Al composite foams are investigated by quasi-static compression tests and low-velocity impact. For the first time, drop weight tests are reported on open-cell metal foams, especially Ni/Al composite foams. Furthermore, size-effects were evaluated. The microstructural deformation mechanism was analysed using a high-speed camera and digital image correlation. Whereas pure aluminium foams are only strain-rate sensitive in the plastic collapse stress, Ni/Al foams show a general strain-rate sensitivity based on microinertia effects and the rate-sensitive nano-nickel coating. Ni/Al foams are superior to aluminium foams and to artificial aluminium foams with equal density.
AU  - Jung,A
AU  - Pullen,AD
AU  - Proud,WG
DO  - 10.1016/j.compositesa.2016.02.031
EP  - 11
PY  - 2016///
SN  - 1359-835X
SP  - 1
TI  - Strain-rate effects in Ni/Al composite metal foams from quasi-static to low-velocity impact behaviour
T2  - Composites Part A - Applied Science and Manufacturing
UR  - http://dx.doi.org/10.1016/j.compositesa.2016.02.031
VL  - 85
ER  -
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