Thermographic investigation of strain rate effects in Al foams and Ni/Al hybrid foams

Thermographic investigation of strain rate effects in Al foams and Ni/Al hybrid foams

Open-cell metal foams are biomimetic open-porous materials mimicking the construction elements of bones. Based on their special porous microstructure, they are used as lightweight construction elements and for crash energy absorbers. Ni/Al hybrid foams are aluminium (Al) foams electrochemically coat...

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Main Authors: A. Jung, S. Bronder, S. Diebels, M. Schmidt, S. Seelecke
Format: Article
Language:English
Published: Elsevier 2018-12-01
Series:Materials & Design
Online Access:http://www.sciencedirect.com/science/article/pii/S0264127518307160
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spelling doaj-02509b2dcc5b4ddc870899b6e220ceb52020-11-25T00:37:09ZengElsevierMaterials & Design0264-12752018-12-01160363370Thermographic investigation of strain rate effects in Al foams and Ni/Al hybrid foamsA. Jung0S. Bronder1S. Diebels2M. Schmidt3S. Seelecke4Saarland University, Applied Mechanics, Campus A4.2, Saarbrücken 66123, Germany; Corresponding author.Saarland University, Applied Mechanics, Campus A4.2, Saarbrücken 66123, GermanySaarland University, Applied Mechanics, Campus A4.2, Saarbrücken 66123, GermanySaarland University, Multifunctional Materials Systems Lab, P.O. Box 151150, 66041 Saarbrücken, GermanySaarland University, Multifunctional Materials Systems Lab, P.O. Box 151150, 66041 Saarbrücken, GermanyOpen-cell metal foams are biomimetic open-porous materials mimicking the construction elements of bones. Based on their special porous microstructure, they are used as lightweight construction elements and for crash energy absorbers. Ni/Al hybrid foams are aluminium (Al) foams electrochemically coated with nanocrystalline nickel (Ni) leading to enhanced strength and energy absorption capacity. A robust understanding and knowledge of the deformation behaviour under different strain rates are essential to design crash absorbers made of foams. The present contribution is focused on the investigation of strain rate effects and is furthermore a pioneering work dealing with a full thermomechanical characterisation of the deformation behaviour in Al foams and Ni/Al hybrid foams by a combination of digital image correlation for measuring local strain fields and infrared thermography for measuring local temperature fields during the deformation process. Keywords: Open-cell metal foams, Ni/Al hybrid foams, Digital image correlation, Thermography, Deformation analysishttp://www.sciencedirect.com/science/article/pii/S0264127518307160
collection DOAJ
language English
format Article
sources DOAJ
author A. Jung
S. Bronder
S. Diebels
M. Schmidt
S. Seelecke
spellingShingle A. Jung
S. Bronder
S. Diebels
M. Schmidt
S. Seelecke
Thermographic investigation of strain rate effects in Al foams and Ni/Al hybrid foams
Materials & Design
author_facet A. Jung
S. Bronder
S. Diebels
M. Schmidt
S. Seelecke
author_sort A. Jung
title Thermographic investigation of strain rate effects in Al foams and Ni/Al hybrid foams
title_short Thermographic investigation of strain rate effects in Al foams and Ni/Al hybrid foams
title_full Thermographic investigation of strain rate effects in Al foams and Ni/Al hybrid foams
title_fullStr Thermographic investigation of strain rate effects in Al foams and Ni/Al hybrid foams
title_full_unstemmed Thermographic investigation of strain rate effects in Al foams and Ni/Al hybrid foams
title_sort thermographic investigation of strain rate effects in al foams and ni/al hybrid foams
publisher Elsevier
series Materials & Design
issn 0264-1275
publishDate 2018-12-01
description Open-cell metal foams are biomimetic open-porous materials mimicking the construction elements of bones. Based on their special porous microstructure, they are used as lightweight construction elements and for crash energy absorbers. Ni/Al hybrid foams are aluminium (Al) foams electrochemically coated with nanocrystalline nickel (Ni) leading to enhanced strength and energy absorption capacity. A robust understanding and knowledge of the deformation behaviour under different strain rates are essential to design crash absorbers made of foams. The present contribution is focused on the investigation of strain rate effects and is furthermore a pioneering work dealing with a full thermomechanical characterisation of the deformation behaviour in Al foams and Ni/Al hybrid foams by a combination of digital image correlation for measuring local strain fields and infrared thermography for measuring local temperature fields during the deformation process. Keywords: Open-cell metal foams, Ni/Al hybrid foams, Digital image correlation, Thermography, Deformation analysis
url http://www.sciencedirect.com/science/article/pii/S0264127518307160
work_keys_str_mv AT ajung thermographicinvestigationofstrainrateeffectsinalfoamsandnialhybridfoams
AT sbronder thermographicinvestigationofstrainrateeffectsinalfoamsandnialhybridfoams
AT sdiebels thermographicinvestigationofstrainrateeffectsinalfoamsandnialhybridfoams
AT mschmidt thermographicinvestigationofstrainrateeffectsinalfoamsandnialhybridfoams
AT sseelecke thermographicinvestigationofstrainrateeffectsinalfoamsandnialhybridfoams
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