Strain hardening and shock mitigation response of polyurethane under high strain rates

Polyurethane is a promising candidate for the potting of embedded electronics due to its shock absorbing properties. This paper discusses the less known strain hardening and shock mitigation properties of 4,4′-methylenediphenyl diisocyanate based polyurethane under dynamic loading. This study is rep...

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Autores principales:	Amandeep Singh, V. D. Shivling, P. K. Khosla, Ashish Saini, Vijay Kumar, Ankur Trigunayak
Formato:	article
Lenguaje:	EN
Publicado:	AIP Publishing LLC 2021
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/d572f1354dac4d509595f512ec893b22
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spelling	oai:doaj.org-article:d572f1354dac4d509595f512ec893b222021-12-01T18:52:06ZStrain hardening and shock mitigation response of polyurethane under high strain rates2158-322610.1063/5.0068403https://doaj.org/article/d572f1354dac4d509595f512ec893b222021-11-01T00:00:00Zhttp://dx.doi.org/10.1063/5.0068403https://doaj.org/toc/2158-3226Polyurethane is a promising candidate for the potting of embedded electronics due to its shock absorbing properties. This paper discusses the less known strain hardening and shock mitigation properties of 4,4′-methylenediphenyl diisocyanate based polyurethane under dynamic loading. This study is reported in a strain rate range of 1600–2900 s−1 under compression using a split-Hopkinson pressure bar (SHPB). The experimental stress–strain behavior of polyurethane was modeled with Hollomon’s equation to analyze its hardening behavior in dynamic environments. Jointly, the incident, reflected, and transmitted strain signals of the SHPB are analyzed in time and frequency domains to understand the shock absorbing properties of polyurethane. Polyurethane was found to absorb more shock for more intense loading. It was observed to mitigate 81% of shock energy with frequencies up to 10 kHz.Amandeep SinghV. D. ShivlingP. K. KhoslaAshish SainiVijay KumarAnkur TrigunayakAIP Publishing LLCarticlePhysicsQC1-999ENAIP Advances, Vol 11, Iss 11, Pp 115306-115306-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Amandeep Singh V. D. Shivling P. K. Khosla Ashish Saini Vijay Kumar Ankur Trigunayak Strain hardening and shock mitigation response of polyurethane under high strain rates
description	Polyurethane is a promising candidate for the potting of embedded electronics due to its shock absorbing properties. This paper discusses the less known strain hardening and shock mitigation properties of 4,4′-methylenediphenyl diisocyanate based polyurethane under dynamic loading. This study is reported in a strain rate range of 1600–2900 s−1 under compression using a split-Hopkinson pressure bar (SHPB). The experimental stress–strain behavior of polyurethane was modeled with Hollomon’s equation to analyze its hardening behavior in dynamic environments. Jointly, the incident, reflected, and transmitted strain signals of the SHPB are analyzed in time and frequency domains to understand the shock absorbing properties of polyurethane. Polyurethane was found to absorb more shock for more intense loading. It was observed to mitigate 81% of shock energy with frequencies up to 10 kHz.
format	article
author	Amandeep Singh V. D. Shivling P. K. Khosla Ashish Saini Vijay Kumar Ankur Trigunayak
author_facet	Amandeep Singh V. D. Shivling P. K. Khosla Ashish Saini Vijay Kumar Ankur Trigunayak
author_sort	Amandeep Singh
title	Strain hardening and shock mitigation response of polyurethane under high strain rates
title_short	Strain hardening and shock mitigation response of polyurethane under high strain rates
title_full	Strain hardening and shock mitigation response of polyurethane under high strain rates
title_fullStr	Strain hardening and shock mitigation response of polyurethane under high strain rates
title_full_unstemmed	Strain hardening and shock mitigation response of polyurethane under high strain rates
title_sort	strain hardening and shock mitigation response of polyurethane under high strain rates
publisher	AIP Publishing LLC
publishDate	2021
url	https://doaj.org/article/d572f1354dac4d509595f512ec893b22
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Strain hardening and shock mitigation response of polyurethane under high strain rates

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