Comparisons of K sub I c Measurements by the Short Rod and ASTM E 399 Methods.
TERRA TEK INC SALT LAKE CITY UT
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A multilaboratory blind comparison testing program was used to evaluate the accuracy of the short rod method of measuring the fracture toughness of metallic materials. Valid comparisons between KIcs measured according to ASTM E 399 and by the short rod method were obtained for several steels, aluminum alloys, and titanium. The short rod KIc values were consistently low, averaging 6 percent below the measurements according to E 399. A 4 percent adjustment in the short rod calibration constant, which had been previously evaluated only to or - 7 percent, brings the two sets of KIc measurements into very good agreement. The short rod method thus appears to be a viable alternative for measuring the fracture toughness of metallic materials. Author
- Metallurgy and Metallography
- Test Facilities, Equipment and Methods