Significance of J and CTOD Estimation Procedures for Common Fracture Specimens and Extension to Structural Components

Update: 2012-10-01

Description

This study addresses further developments of the evaluation procedure for J and CTOD in common fracture specimens based upon the -method. Very detailed non-linear finite element analyses for plane-strain models provide the evolution of load with increased load-displacement to define the relationship between plastic work and crack-tip driving force ( and CTOD) from which the -values are derived. Further analyses based on the load separation method are also conducted to define alternative -values against which factors evaluated from plastic work can be compared. The analyses reveal that -factors based on load-line displacement (LLD) are sensitive to plasticity changes at locations remote from the crack-tip region. Overall, the present results provide a strong support to use -based procedures in toughness measurements for conventional SE(T) fracture specimens.

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Significance of J and CTOD Estimation Procedures for Common Fracture Specimens and Extension to Structural Components

#box-pro-ellipsis-176101835968920{-webkit-line-clamp:2;}Significance of J and CTOD Estimation Procedures for Common Fracture Specimens and Extension to Structural Components

Significance of J and CTOD Estimation Procedures for Common Fracture Specimens and Extension to Structural Components

C. Ruggieri

Significance of J and CTOD Estimation Procedures for Common Fracture Specimens and Extension to Structural Components