Back to Search
Start Over
An Uncertainty Estimator for Slitting Method Residual Stress Measurements Including the Influence of Regularization
- Source :
- Experimental Mechanics, vol 60, iss 1
- Publication Year :
- 2020
- Publisher :
- eScholarship, University of California, 2020.
-
Abstract
- This paper describes the development of a new uncertainty estimator for slitting method residual stress measurements. The new uncertainty estimator accounts for uncertainty in the regularization-based smoothing included in the residual stress calculation procedure, which is called regularization uncertainty. The work describes a means to quantify regularization uncertainty and then, in the context of a numerical experiment, compares estimated uncertainty to known errors. The paper further compares a first-order uncertainty estimate, established by a repeatability experiment, to the new uncertainty estimator and finds good correlation between the two estimates of precision. Furthermore, the work establishes a procedure for automated determination of the regularization parameter value that minimizes total uncertainty. In summary, the work shows that uncertainty in the regularization parameter is a significant contributor to the total uncertainty in slitting method measurements and that the new uncertainty estimator provides a reasonable estimate of single measurement uncertainty.
- Subjects :
- Single measurement
Aerospace Engineering
02 engineering and technology
Regularization (mathematics)
Civil Engineering
Uncertainty estimate
0203 mechanical engineering
Crack compliance method
Residual stress
Regularization
Applied mathematics
Mechanical Engineering & Transports
Repeatability
Mathematics
Residual stress measurement
Mechanical Engineering
Uncertainty
Estimator
Slitting method
Precision
021001 nanoscience & nanotechnology
020303 mechanical engineering & transports
Mechanics of Materials
Solid mechanics
Integral method
Interdisciplinary Engineering
0210 nano-technology
Smoothing
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- Experimental Mechanics, vol 60, iss 1
- Accession number :
- edsair.doi.dedup.....a3df20f072080b8bd2d6bdecf683ec13