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Using Monte Carlo Methods to Compute the Uncertainty of Fracture Toughness and Fracture Resistance Curves

Published

Author(s)

Lucas Koepke, Dash Weeks, Jolene D. Splett

Abstract

The uncertainty of fracture toughness and associated fracture resistance curves for single edge-notched tension (SE(T) or SENT) specimens is a key component missing from widely accepted testing protocols. Complicating matters, these uncertainties are not easily calculated using traditional propagation-of-error techniques. Uncertainty estimates using Monte Carlo techniques for two test methods are presented and the effect of changing the distribution and tolerance specified for the measurement and input quantities on the results is investigated.
Citation
Technical Note (NIST TN) - 2212
Report Number
2212

Keywords

Crack tip opening displacement, CTOD, CTOD-R, Fracture resistance, fracture resistance curve, fracture toughness, J-integral, J-R, Monte Carlo methods, propagation of errors, experimental error, SENT, SE(T), single- edge-notched tension, uncertainty.

Citation

Koepke, L. , Weeks, D. and Splett, J. (2023), Using Monte Carlo Methods to Compute the Uncertainty of Fracture Toughness and Fracture Resistance Curves, Technical Note (NIST TN), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/NIST.TN.2212, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=934366 (Accessed March 2, 2024)
Created February 3, 2023