A Method to Estimate Fabric Particle Penetration Performance

Abstract

A methodology was developed to predict fabric particle penetration performance for various wind speeds. Pressure drop across a fabric sleeve in a wind tunnel was measured along with the relationship of fabric pressure drop and fabric face velocity for a bench top swatch testing apparatus. The relationship between fabric face velocity and ambient wind speed was then inferred. Fabric penetration tests were conducted on four different configurations/materials using a wind tunnel component sleeve, a wind tunnel swatch (one material only), and a bench top swatch apparatus. Two challenges were utilized: DiOctyl Sebacate and Aerosol 380. The results were found to be consistent and repeatable. The methodology was successfully demonstrated using a wind tunnel swatch testing apparatus and comparison to bench top swatch results. Using this technique, tests are possible to compare, in an equivalent manner, material, fasteners, closures, and seam particle penetration performance subjected to an equivalent wind speed. Component sleeve particle penetration performance was compared to bench top swatch results and generally found to be within 0.2 (20%) for the DiOctyl Sebacate challenge. Aerosil challenge was found to generally differ by less than 0.1 (10%) between component sleeve wind tunnel tests and bench top swatch tests. While the methodology shows promise, further research of the particle dynamics in the vicinity of the sleeve and within the fabric/component gap may be needed to improve the correlation between wind tunnel component sleeve tests and bench top swatch test. The ability to predict multi-layered fabric performance from the constituent material performance was demonstrated and this technique may be useful in the design of tailored IPE systems.

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Document Details

Document Type
Technical Report
Publication Date
Sep 08, 2014
Accession Number
ADA610303

Entities

People

  • Suresh Dhaniyala
  • Terence A. Ghee

Organizations

  • Naval Air Warfare Center

Tags

Communities of Interest

  • Human Systems

DTIC Thesaurus Topics

  • Bench Top Testing
  • Fabrics
  • Flow Rate
  • Instrumentation
  • Mass Flow
  • Materials
  • Particle Size
  • Particles
  • Personal Protective Equipment
  • Pressure Measurement
  • Static Pressure
  • Swatch Testing
  • Swatches
  • Test Facilities
  • Wind Tunnel Tests
  • Wind Tunnels
  • Wind Velocity

Readers

  • Aerosol Science/Aerosol Physics
  • Electrical Engineering
  • Petroleum Engineering

Technology Areas

  • AI & ML
  • AI & ML - Bayesian Inference