Defense Technical Information Center (DTIC) · 1965 · 16 citations · 0 references
Natural SciencesMaterials EngineeringMaterials ScienceMaterials CharacterizationMechanical Behavior Of MaterialsStructural MaterialsFracture CharacterizationFracture MechanicsFracture ToughnessMechanical CharacterizationStrength Of MaterialsStress-strain BehaviorFracture TestingFracture Toughness MeasurementFracture Toughness TestingLinear Elastic AnalysisLinear Elastic BehaviorLinear Elastic Fracture MechanicsTest InstrumentationToughness Measurement
A comprehensive survey is presented of current methods of fracture toughness testing that are based on linear elastic fracture mechanics. General principles are discussed in relation to the basic two-dimensional crack stress field model and in relation to real three-dimensional specimens. The designs and necessary dimensions of specimens for mixed mode and opening mode (plane strain) crack toughness measurement are considered in detail. Methods of test instrumentation and procedure are described. Expressions for the calculation of crack toughness values are given for the common types of specimens.