Accession Number:

ADA523465

Title:

Multiscale Characterization Technique for Chemically Reactive Multiphase Composite Microstructure (PREPRINT)

Descriptive Note:

Journal article preprint

Corporate Author:

AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH MATERIALS AND MANUFACTURING DIRECTORATE

Report Date:

2010-01-01

Pagination or Media Count:

18.0

Abstract:

The objective of this article is to outline a technique for characterizing the influence of spatial heterogeneity of two reactant phases in a three-phase chemically reactive composite material microstructure. Here, we describe a computational technique that calculates the reaction yield for multiple microstructure length scales based on the spatial relationship between the two reactive phases and the reaction stoichiometry. The reaction yield is a quantitative metric that characterizes the fraction of the chemical reaction that proceeds based on dividing the bulk microstructure into sub-regions of a particular length scale. The results of using this technique show how the reaction yield can be used to quantify differences in microstructure related to particle size and area fractions of the reactant phases. For example, we show that a bimodal microstructure has a higher reaction yield at every length scale when compared to a monomodal microstructure.

Subject Categories:

  • Industrial Chemistry and Chemical Processing
  • Physical Chemistry
  • Laminates and Composite Materials
  • Numerical Mathematics
  • Manufacturing and Industrial Engineering and Control of Production Systems
  • Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE