Enhanced Reliability Prediction Methodology for Impact Damaged Composite Structures

Abstract

A through review of the existing impact test data and analysis methods was conducted and the results were used to identify a reliability prediction methodology for further development. The integrated residual strength/reliability method developed by Northrop Grumman under a Navy/Federal Aviation Administration sponsored program was selected and modified. The modification was primarily in reducing the number of empirical constants required in the model. In addition, a cutoff energy level and a threshold energy level were also established analytically for the strength prediction. A structural damage tolerance evaluation was conducted using the modified model and the results compared to those obtained from the existing model.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1998
Accession Number
ADA357778

Entities

People

  • H. P. Kan

Organizations

  • Northrop Grumman

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aircrafts
  • Composite Materials
  • Composite Structures
  • Computer Programs
  • Delamination
  • Engineering
  • Epoxy Laminates
  • Experimental Data
  • Failure Mode And Effect Analysis
  • Fuselages
  • Impact Tests
  • Laminates
  • Materials Processing
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Test And Evaluation

Fields of Study

  • Engineering

Readers

  • Computational Modeling and Simulation
  • Naval Engineering and Maritime Security
  • Reinforced Composite Materials