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Fracture toughness of materials. Progress report, February-October 1984

Technical Report ·
OSTI ID:6311987
Crack tip deformation in single crystals has been quantatively measured by observing screw and edge character dislocations at mode I and II crack tips. Each dislocation shields the true crack tip from the applied stress intensity factor. The thermal expansion of materials in a pressure-volume-temperature system has been proved to never change sign. The proof is based on the second law of thermodynamics.
Research Organization:
Rochester Univ., NY (USA). Dept. of Mechanical Engineering
DOE Contract Number:
FG02-84ER45051
OSTI ID:
6311987
Report Number(s):
DOE/ER/45051-01; ON: DE85004306
Country of Publication:
United States
Language:
English

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Related Subjects

36 MATERIALS SCIENCE
360000* -- Materials
ALKALI METAL COMPOUNDS
CHALCOGENIDES
CRACK PROPAGATION
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
CRYSTALS
DISLOCATIONS
EXPANSION
FLUORIDES
FLUORINE COMPOUNDS
FRACTURE PROPERTIES
HALIDES
HALOGEN COMPOUNDS
LINE DEFECTS
LITHIUM COMPOUNDS
LITHIUM FLUORIDES
LITHIUM HALIDES
MECHANICAL PROPERTIES
MONOCRYSTALS
OXIDES
OXYGEN COMPOUNDS
THERMAL EXPANSION
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES