France-Australia Technical Arrangement TA 1/99 - Work Package 1: Study of the Equivalence of Hot/Dry and Hot/Wet Testing

Abstract

Substantial savings could be made in the airworthiness certification of composite aircraft structure if the strength of polymer matrix composites in the elevated temperature wet (ETW) condition could be predicted from parameter that are easier to measure such as strength in the elevated temperature dry (ETD) condition and the glass transition temperature (Tg). The feasibility of this approach was tested by measuring the strength of AS4/3501-6 unidirectional prepreg tape, T650/F584 plain weave prepreg fabric and T650/PR500 plain weave fabric consolidated by resin transfer moulding, in the dry and 70 deg C/85 % relative humidity equilibrated condition, from 25 to 120 deg C using interlaminar shear, +-45 deg tension, open hole compression and compression after impact tests. Apart from a decrease in strength with increasing temperature and moisture content there was no consistent relation between ETD and ETW strength. It was therefore not possible to predict ETW strength for these materials and tests on the basis of ETD strength and Tg only.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 2005
Accession Number
ADA440127

Entities

People

  • Paul J. Callus

Organizations

  • Defence Science and Technology Group

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aircrafts
  • Composite Materials
  • Data Acquisition
  • Failure Mode And Effect Analysis
  • Glass Transition Temperature
  • Laminates
  • Materials
  • Materials Processing
  • Materials Science
  • Mechanical Properties
  • Military Aircraft
  • Moisture Content
  • Polymer Matrix Composites
  • Resin Transfer Molding
  • Resins
  • Shear Strength
  • Transition Temperature

Fields of Study

  • Materials science

Readers

  • Reinforced Composite Materials
  • Thermal Physics or Thermal Science.