FRACTURE OF BRITTLE MATERIALS UNDER TRANSIENT MECHANICAL AND THERMAL LOADING

Abstract

The integrity of brittle elements subjected to time-dependent thermal and mechanical loads was predicted by means of an algorithm involving three steps: the determination of the temperature distribution, the determination of the thermal and mechanical stresses, and the statistical description of the resistance of the brittle material. Experiments were conducted on beams and disks under transient thermal and mechanical loads. The fracture probability- time curves obtained for these members are very accurately predicted by the fracture algorithm. The sensitivity of the beam and disk response to changes in the elastic, thermal, and statistical strength parameters was investigated. A combined stress fracture theory for brittle elements was developed which accounts for a history of thermal and mechanical loading.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1967
Accession Number
AD0649978

Entities

People

  • Chester L. Connors
  • James R. Wingfield
  • Paul C. Hermann
  • Ralph L. Barnett

Organizations

  • IIT Research Institute

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Algorithms
  • Aluminum Oxides
  • Bricks
  • Computer Programs
  • Creep
  • Elastic Properties
  • Failure Mode And Effect Analysis
  • Materials
  • Mechanical Properties
  • Mechanics
  • Modulus Of Elasticity
  • Resistance
  • Statistical Analysis
  • Tensile Strength
  • Thermal Conductivity
  • Three Dimensional
  • Two Dimensional

Readers

  • Computational Modeling and Simulation
  • Materials Science (Mechanical Engineering).
  • Structural Dynamics.