STANDARD METHOD FOR THE 5/8 INCH DYNAMIC TEAR TEST
NAVAL RESEARCH LAB WASHINGTON DC
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Fracture-safe design of structures depends critically upon the fracture toughness of the material, and remarkable advances in fracture mechanics technology have provided quantitative relationships between the mechanical aspects and the metallurgical aspects of fracture resistance. To exploit these scientific developments, the Dynamic Tear DT test has been under development to provide a practical, quantitative test method for fracture toughness measurement. DT energy has been used extensively for the characterization of fracture resistance of ferrous and nonferrous metals, and a direct translation to structural parameters has been developed using analysis diagrams for solving the complex analog relationship between the mechanical, metallurgical and structural aspects. A standard method for conducting the DT test using 58 in. thick specimens 58 DT was developed to provide for uniform testing between laboratories. The standard 58 DT test can be used for specification purposes with 58 DT energy as dynamic performance criteria.
- Metallurgy and Metallography
- Test Facilities, Equipment and Methods