1. Analysis of applicability of small-sized specimens to prediction of temperature dependence of fracture toughness.
- Author
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Nikolaev, V., Margolin, B., Ryadkov, L., and Fomenko, V.
- Subjects
FRACTURE mechanics ,EMBRITTLEMENT ,NOTCHED bar testing ,TEMPERATURE ,METALLOGRAPHIC specimens ,STRAINS & stresses (Mechanics) ,STRUCTURAL steel ,METAL fractures - Abstract
The paper addresses the use of small-sized specimens of various types, including those with deep (50%) side grooves, for the purpose of fracture toughness prediction. The experimental data for numerous (more than 500) small-sized specimens prepared from materials of various degrees of embrittlement are compared to the test results for full-sized specimens of C(T) type. The concepts of Master Curve and Unified Curve are applied for the processing of experimental data. To handle the test results for small-sized deep-grooved specimens a calculation procedure has been elaborated, which adjusts the calculation method specified in the ASTM Standard E 1921. We provide recommendations of how to use precracked Charpy type deep-grooved (50%) specimens for prediction of a representative temperature dependence of fracture toughness. [ABSTRACT FROM AUTHOR]
- Published
- 2009
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