CRACK INITIATION BEHAVIOR OF STRUCTURAL STEELS - TESTS WITH SHARP NOTCH BENDING SPECIMENS
FOR THE EVALUATION OF THE SAFETY OF WELDED CONSTRUCTIONS, IT IS IMPORTANT TO KNOW UP TO WHICH TEMPERATURE AND STRESS A MATERIAL MAY BE LOADED WITHOUT AN ALREADY EXISTENT CRACK BECOMING UNSTABLE AND CONVERTING INTO A BRITTLE FRACTURE, WHICH PROPAGATES VERY FAST. THE TRANSITION OF A STATIC CRACK TO A HIGH-SPEED CRACK IS CALLED CRACK INITIATION. THE BEHAVIOR OF STRUCTURAL STEELS DURING THE INITIATION OF CRACKS IS STUDIED BY SHARP NOTCH BENDING TESTS. THE TECHNIQUE FOR MEASURING THE RESISTANCE OF THE MATERIAL AGAINST CRACK INITIATION AND THE CRITICAL TEMPERATURE IS DESCRIBED. THE PHASES OF FRACTURE ARE DISCUSSED. THE CENTRAL PART OF THE INVESTIGATION IS CONCERNED WITH THE DEPENDENCE OF CRACK INITIATION UPON THE CONDITIONS OF LOADING, I.E., TEMPERATURE, STATE OF STRESS, STRAIN RATE AND DIMENSIONS OF SPECIMEN. THE INFLUENCE OF THE ANISOTROPY OF THE MATERIAL AND OF A DEFORMATION AT LOW TEMPERATURE IS DEALT WITH IN DETAIL. THE SCATTER OF THE RESULTS OF CRACK INITIATION TESTS IS DETERMINED. /AUTHOR/
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Supplemental Notes:
- Vol 11, No 11, PP 365-372
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Authors:
- Degenkolbe, J
- Musgen, B
- Publication Date: 1969-11
Media Info
- Serial:
Subject/Index Terms
- TRT Terms: Bend tests; Cracking; Loads; Strain (Mechanics); Stresses; Structural steel; Temperature
- Uncontrolled Terms: Crack propagation; Loading; Strain rate
- Old TRIS Terms: Initiation
- Subject Areas: Geotechnology; Highways; Materials;
Filing Info
- Accession Number: 00216940
- Record Type: Publication
- Files: TRIS
- Created Date: May 4 1970 12:00AM