An Evaluation of the Boeing Wedge Test for the Assessment of CFRP surface Pretreatment

Abstract

Boeing wedge specimens have been prepared from carbon fibre reinforced composites moulded against PFTE(Polytetrafluoroethylene) impregnated release cloth or silicone or PTFE release agents and pretreated by various abrasive methods. The initial crack length has been found to be related to the surface coverage by contaminant and to the strength of lap joints prepared form similar composites. Crack growth on exposure to hot-humid conditions was not a function of surface contamination.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1984
Accession Number
ADA144050

Entities

People

  • B. M. Parker

Organizations

  • Royal Aircraft Establishment

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Adhesive Bonding
  • Adhesives
  • Bonded Joints
  • Bonding
  • Carbon Fiber Reinforced Polymer
  • Carbon Fibers
  • Composite Materials
  • Contamination
  • Cracks
  • Environmental Pollutants
  • Fibers
  • Fluoropolymers
  • Joints
  • Laminates
  • Metal Plates
  • Test And Evaluation
  • Test Methods

Fields of Study

  • Materials science

Readers

  • Reinforced Composite Materials
  • Surface Coatings Technology.