APS March Meeting 2016
Volume 61, Number 2
Monday–Friday, March 14–18, 2016;
Baltimore, Maryland
Session P12: Bridging Time and Length Scales in Polymers and Soft Materials: Computational Pathways to Accelerate the Lab to Fab Transition - Industry Day
2:30 PM–5:30 PM,
Wednesday, March 16, 2016
Room: 308
Sponsoring
Units:
DPOLY DCOMP FIAP
Chair: Mark Stevens, Sandia National Laboratories
Abstract ID: BAPS.2016.MAR.P12.4
Abstract: P12.00004 : Conduction and Narrow Escape in Dense, Disordered, Particulate-based Heterogeneous Materials
4:18 PM–4:54 PM
Preview Abstract
Abstract
Author:
Jeremy Lechman
(Sandia National Laboratories)
For optimal and reliable performance, many technological devices rely on
complex, disordered heterogeneous or composite materials and their
associated manufacturing processes. Examples include many powder and
particulate-based materials found in phyrotechnic devices for car airbags,
electrodes in energy storage devices, and various advanced composite
materials. Due to their technological importance and complex structure,
these materials have been the subject of much research in a number of
fields. Moreover, the advent of new manufacturing techniques based on powder
bed and particulate process routes, the potential of functional
nano-structured materials, and the additional recognition of persistent
shortcomings in predicting reliable performance of high consequence
applications; leading to ballooning costs of fielding and maintaining
advanced technologies, should motivate renewed efforts in understanding,
predicting and controlling these materials' fabrication and behavior. Our
particular effort seeks to understand the link between the top-down control
presented in specific non-equilibrium processes routes (i.e., manufacturing
processes) and the variability and uncertainty of the end product
performance. Our ultimate aim is to quantify the variability inherent in
these constrained dynamical or random processes and to use it to optimize
and predict resulting material properties/performance and to inform
component design with precise margins. In fact, this raises a set of deep
and broad-ranging issues that have been recognized and as touching the core
of a major research challenge at Sandia National Laboratories. In this talk,
we will give an overview of recent efforts to address aspects of this
vision. In particular the case of conductive properties of packed
particulate materials will be highlighted. Combining a number of existing
approaches we will discuss new insights and potential directions for further
development toward the stated goal.
Sandia National Laboratories is a multiprogram laboratory managed and
operated by Sandia Corporation, a Lockheed-Martin Company, for the U. S.
Department of Energy's National Nuclear Security Administration under
Contract No. DE-AC04-94AL85000.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2016.MAR.P12.4