NIST Property Data Summaries for Fracture Toughness
Units:SI units, unit symbols, and unit prefixes are used in the NIST Property Data Summaries.
Uncertainties:No attempt has been made to assign uncertainties to the individual values obtained from the literature. A survey of data in the NIST Structural Ceramics Database indicates that relative combined standard uncertainties in the range of 5 % to 15 % are not unusual for fracture toughness measurements. Exceptional cases having reported uncertainties as low as 1 % or as high as 30 % can be found, but such cases are very unusual. For a comprehensive discussion on estimates of uncertainty, see "Guidelies for Evaluating and Expressing the Uncertainty of NIST Measurement Results," by B. N. Taylor and C. E. Kuyatt, NIST Technical Note 1297.
Data Summaries:Fracture Toughness
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