Composite Replacement Panel Strain Survey - Test Results and Data Analysis

Abstract

DSTO, in collaboration with the Cooperative Research Centre for Advance Composite Structures, produced a demonstrator Composite Replacement Panel (CRP) as a replacement for F-111C Panel 3208 (Part Number 128-3913). As part of the airworthiness certification program for the CRP technology, the demonstrator CRP, in the Composite Replacement Panel Strain Survey (CRPSS), was installed on a Royal Australian Air Force F-111C aircraft prior to a Cold Proof Load Test (CPLT). Strains in the CRP and local sub-structure were recorded as the aircraft was cooled from ambient to -40 deg C. The magnitude of these thermally induced strains were moderate and lower on the side of the aircraft containing the CRP, implying that installing CRPs may reduce load in airframe sub-structures. The strain gauge measurements during the CPLT were compared with predictions made using the F-111C Internal Loads Finite Element Model and associated sub-models. The response of most strain gauges were predicted with reasonable accuracy although the strains in skin panels were not predicted well. Modification of the sub-models would be required to predict accurately the strains in all CRPSS gauges.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 2005
Accession Number
ADA441755

Entities

People

  • Paul J. Callus

Organizations

  • Defence Science and Technology Group

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Accuracy
  • Air Force
  • Aircraft Panels
  • Aircrafts
  • Airframes
  • Celestial Brightness
  • Composite Materials
  • Composite Structures
  • Construction
  • Data Acquisition
  • Data Analysis
  • Laminates
  • Materials
  • Measurement
  • Strain Gages
  • Thermal Expansion
  • Vehicles

Readers

  • Library and Information Science/ Studies, Southeast Asia Studies, Bibliography of Vietnam and Lao Studies.
  • Structural Health Monitoring of Composite Structures.