Design of Stitched Sandwich Composites Using Response Surface Modeling

Abstract

The influence of stitching on the fracture behavior of stitched sandwich composites is investigated. A stitch parameter design space for future or existing aircraft programs using stitched sandwich composite parts is developed. A design of experiments (DoE) approach is implemented to maximize the mode I fracture energy based on optimal selection of stitching parameters (stitch density and linear thread density). A response surface model (RSM) based on stitch design parameters is used to inform a finite element model for the prediction of crack-growth arrestment. Optimal stitch design parameters based upon maximizing the fracture energy are incorporated in a structural component (airplane strut door).

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Document Details

Document Type
Technical Report
Publication Date
May 25, 2023
Accession Number
AD1214241

Entities

People

  • Daniel A. Drake
  • Rani W. Sullivan

Organizations

  • Mississippi State University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Aircrafts
  • Carbon Carbon Composites
  • Composite Material Fabrication
  • Composite Materials
  • Computational Science
  • Laminates
  • Literature Surveys
  • Manufacturing
  • Material Degradation Processes
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Materials Testing
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Polymer Matrix Composites
  • Reinforced Plastics
  • Test Methods

Readers

  • Computational Modeling and Simulation
  • Materials Science (Mechanical Engineering).
  • Reinforced Composite Materials

Technology Areas

  • Space