Worcester Polytechnic Institute Electronic Theses and Dissertations Collection

Title page for ETD etd-0501102-231140


Document Typethesis
Author NameGrenier, Andrew T.
URNetd-0501102-231140
TitleFire Characteristics of Cored Composite Materials for Marine Use
DegreeMS
DepartmentFire Protection Engineering
Advisors
  • Jonathan Barnett, Advisor
  • Nicholas Dembsey, Advisor
  • Edward Clougherty, Reader
  • David Lucht, Department Head
  • Keywords
  • fire models
  • Navy
  • cored composite materials
  • Date of Presentation/Defense1996-05-01
    Availability unrestricted

    Abstract

    A material study was conducted on two types of cored composite materials used in shipbuilding: a GRP/Balsa Cored sandwich and a GRP/PVC Foam Cored sandwich. The two materials were tested in the Cone Calorimeter and the LIFT Apparatus to obtain data on ignitability, heat release rate, mass loss rate, and smoke production. The observed phenomena of delamination, melting and charring of the core materials, and edge effects are discussed in the context of how they affect test results. The ignition data analysis method specified in ASTM E 1321 "Standard Test Method for Determining Material Ignition and Flame Spread Properties" and Janssens' "improved" method of analysis were both used to derive effective material properties of the test materials. These two analysis methods are shown to produce different material property values for critical irradiance for ignition, ignition temperature, and the effective thermal property, $k ho c$. Material properties derived using Janssens' method are shown to be more consistent between the two test materials and the two different test methods; they were also shown to be better predictors of time to ignition when compared to actual test data. Material properties are used as input to Quintiere's fire growth model in order to evaluate their affect on time to flashover predictions in the ISO 9705 Room/Corner test scenario. Recommendations are made for future testing of cored composite materials, ignition data analysis methods, predictive fire growth models, and other work with composite materials.

    ** This copy contains no figures or appendices **

    Files
  • grenier.pdf

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