A RELIABILITY APPROACH TO THE FATIGUE OF STRUCTURES

ANALYZING THE FATIGUE DAMAGE OF A NOTCHED SPECIMEN SUBJECTED TO A RANDOM-STRESS HISTORY OF NARROW-BAND CHARACTERISTICS, THE CRACK PROPAGATION FACTOR IS TREATED AS A HOMOGENEOUS RANDOM PROCESS REFLECTING STATISTICAL VARIATIONS OF MATERIAL PROPERTY WITHIN THE SPECIMEN. ON THE BASIS OF THE PROPOSED STATISTICAL-MECHANICAL MODEL OF FATIGUE FAILURE, INTO WHICH A CRACK PROPAGATION MODEL AND A FRACTURE CRITERION ARE INCORPORATED, STATISTICAL DISTRIBUTION OF FATIGUE LIFE IS PREDICTED WITH THE AID OF THE MONTE CARLO TECHNIQUE BY DIGITALLY SIMULATING THE STRESS HISTORY AND THE CRACK PROPAGATION FACTOR AS RANDOM PROCESSES. THE RESULTS INDICATE THAT THE SPACIAL RANDOMNESS IN MATERIAL PROPERTY CAN, AND IN FACT SHOULD BE CONSIDERED IN ORDER TO ACCOUNT FOR THE LARGER SCATTER OF FATIGUE LIFE OBSERVED IN THE EXPERIMENT PERFORMED UNDER THE CONDITIONS COMPATIBLE WITH THE ASSUMPTIONS USED IN THE ANALYSIS. /ASTM/

• Supplemental Notes:
  • ASTM 511
• Corporate Authors:

  Probabilistic Aspects of Fatigue

  ,    
• Authors:
  • Payne, A O
• Publication Date: 1971-7

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 106-55
• Serial:
  • Publication of: Probabilistic Aspects of Fatigue
  • Publisher: Probabilistic Aspects of Fatigue

Subject/Index Terms

• TRT Terms: Cracking; Fatigue (Mechanics); Fracture mechanics; Loads; Monte Carlo method; Random functions; Statistical analysis; Structural analysis
• Uncontrolled Terms: Crack propagation; Fracture; Loading
• Old TRIS Terms: Taping
• Subject Areas: Bridges and other structures; Data and Information Technology; Highways;

Filing Info

• Accession Number: 00209951
• Record Type: Publication
• Report/Paper Numbers: S Tech Pub
• Files: TRIS
• Created Date: Dec 4 1973 12:00AM