NDLI: 2-Scale Hierarchical Multiscale Modeling of Piezoresistive and Damage Response in Polymer Nanocomposite Bonded Explosive

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Krishna, K. Talamadupula Adarsh, K. Chaurasia Gary, D. Seidel
Copyright Year	2016
Abstract	This paper builds on previous work done [1, 2] to explore the effective piezoresistive response of polymer bonded explosive (PBX) materials where the polymer medium is reinforced with carbon nanotubes (CNTs). In the present work, the nanocomposite binder is modeled explicitly as a piezoresistive material whose properties are determined from the nanoscale through a micromechanics based 2-scale hierarchical model connecting the nanoscale to the microscale grain structure. Electromechanical cohesive zones are used to model the interface between the grains and nanocomposite binder in order to characterize interface separation and the resulting piezoresistive effect. The overall microscale piezoresistive effect is measured by using the volume averaged properties of the microscale RVE. The hierarchical framework developed here is used to explore key features of the NCBX microstructure such as the effect of grain conductivity, weight percentage of CNTs used and nanocomposite gage factor.
Sponsorship	Aerospace Division
File Format	PDF
ISBN	9780791850480
DOI	10.1115/SMASIS2016-9234
Volume Number	Volume 1: Multifunctional Materials; Mechanics and Behavior of Active Materials; Integrated System Design and Implementation; Structural Health Monitoring
Conference Proceedings	ASME 2016 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
Language	English
Publisher Date	2016-09-28
Publisher Place	Stowe, Vermont, USA
Access Restriction	Subscribed
Subject Keyword	Electrical conductivity Microscale devices Binders (materials) Nanoscale phenomena Carbon nanotubes Separation (technology) Gages Multiscale modeling Polymer nanocomposites Nanocomposites Weight (mass) Thermal conductivity Explosives Damage Polymers Micromechanics (engineering)
Content Type	Text
Resource Type	Article

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