THICK SECTION FRACTURE TOUGHNESS

Abstract

The purpose of this program was to evaluate plane stress and plane strain fracture toughness for eight alloys suitable for thick section application on the supersonic transport. A preliminary heat treat study was conducted using precracked Charpy specimens to determine a relative optimum toughness condition for each alloy. Data are presented for several exploratory heat treatments for each alloy. Plane stress and plane strain critical stress intensity values are presented for three thicknesses of center notched specimens at four temperatures from -110 to 650 deg F. Plane strain values were obtained from discontinuous cracking, popin, indications. Plane strain values were also obtained from round notched tensile specimens and surface cracked specimens.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1964
Accession Number
AD0452824

Entities

Organizations

  • Boeing

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Chemical Synthesis
  • Chemistry
  • Creep
  • Failure Mode And Effect Analysis
  • Fracture (Mechanics)
  • Heat Treatment
  • High Temperature
  • Materials
  • Materials Laboratories
  • Measurement
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Modulus Of Elasticity
  • Plastic Explosives
  • Tensile Strength
  • Transverse

Readers

  • Materials Science (Mechanical Engineering).
  • Metallurgy

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Flow