contributor author | Dourado, Arinan | |
contributor author | Irmak, Firat | |
contributor author | Viana, Felipe A. C. | |
contributor author | Gordon, Ali P. | |
date accessioned | 2022-02-05T22:11:38Z | |
date available | 2022-02-05T22:11:38Z | |
date copyright | 1/7/2021 12:00:00 AM | |
date issued | 2021 | |
identifier issn | 2377-2158 | |
identifier other | vvuq_006_01_011002.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4277095 | |
description abstract | The Coffin–Manson–Basquin–Haford (CMBH) model is a well-accepted strain-life relationship to model fatigue life as a function of applied strain. In this paper, we propose a nonstationary uncertainty model for the CMBH model, alongside a Bayesian framework for model calibration and estimation of confidence and prediction intervals. Using Inconel 617 coupon test data, we compared our approach to traditional stationary variance models. The proposed uncertainty model successfully captures the fact that the variance of strain amplitude decreases with increasing fatigue life. Additionally, a discussion on how to use the proposed Bayesian framework to compensate for the lack of data by using prior information coming from similar alloys is also presented considering Hastealloy-X and Inconel 617 coupon data. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | A Nonstationary Uncertainty Model and Bayesian Calibration of Strain-Life Models | |
type | Journal Paper | |
journal volume | 6 | |
journal issue | 1 | |
journal title | Journal of Verification, Validation and Uncertainty Quantification | |
identifier doi | 10.1115/1.4049324 | |
journal fristpage | 011002-1 | |
journal lastpage | 011002-8 | |
page | 8 | |
tree | Journal of Verification, Validation and Uncertainty Quantification:;2021:;volume( 006 ):;issue: 001 | |
contenttype | Fulltext | |