PROBABILISTIC LIFE ESTIMATION OF TURBINE SHAFT BOLTED JOINTS CONSIDERING THE EFFECT OF NONLINEAR STRESS GRADIENTS ON CRACK GROWTH RATES

Özge Tümergin; Şevket Ertekin; Aliyye Kara; Ayşe Su Giz; Emel Kula Topak; Umud Esat Ozturk; Ata Muğan

doi:10.1115/GT2023-101771

PROBABILISTIC LIFE ESTIMATION OF TURBINE SHAFT BOLTED JOINTS CONSIDERING THE EFFECT OF NONLINEAR STRESS GRADIENTS ON CRACK GROWTH RATES

Özge Tümergin, Şevket Ertekin, Aliyye Kara, Ayşe Su Giz, Emel Kula Topak, Umud Esat Ozturk, Ata Muğan

Department of Mechanical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Crack growth in mechanical components is determined by initial crack size and fracture toughness that have probabilistic distributions. With a focus on a turbine shaft bolted joint made of Inconel 718, fracture damage was examined during a test cycle while crack size and fracture toughness were random variables. A finite element model of a turbine was created to calculate the stress field in turbine components. Following, stress distribution around the potential crack zones was included in calculating the crack growth. Proposed approach was verified by making comparisons with the results of Nasgro. Probabilistic distribution of crack depth and length, expected life and probability of detecting a crack was included in crack growth analyses. Probability of failure of the stub shaft was calculated via Monte-Carlo simulations. Comparisons were made with the crack growth results of Nasgro to verify the developed methodology. Effect of inspection period on probability of detecting the cracks before failure was determined.

Original language	English
Title of host publication	Structures and Dynamics - Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration
Publisher	American Society of Mechanical Engineers (ASME)
ISBN (Electronic)	9780791887066
DOIs	https://doi.org/10.1115/GT2023-101771
Publication status	Published - 2023
Event	ASME Turbo Expo 2023: Turbomachinery Technical Conference and Exposition, GT 2023 - Boston, United States Duration: 26 Jun 2023 → 30 Jun 2023

Publication series

Name	Proceedings of the ASME Turbo Expo
Volume	11B

Conference

Conference	ASME Turbo Expo 2023: Turbomachinery Technical Conference and Exposition, GT 2023
Country/Territory	United States
City	Boston
Period	26/06/23 → 30/06/23

Bibliographical note

Publisher Copyright:
Copyright © 2023 by ASME.

Funding

The technical support supplied by TUSAŞ Engine Industries, Inc. (TEI) is gratefully acknowledged.

Funders	Funder number
TEI
TUSAŞ

Keywords

crack propagation
probabilistic analysis
Turbines

Access to Document

10.1115/GT2023-101771

Cite this

Tümergin, Ö., Ertekin, Ş., Kara, A., Giz, A. S., Topak, E. K., Ozturk, U. E., & Muğan, A. (2023). PROBABILISTIC LIFE ESTIMATION OF TURBINE SHAFT BOLTED JOINTS CONSIDERING THE EFFECT OF NONLINEAR STRESS GRADIENTS ON CRACK GROWTH RATES. In Structures and Dynamics - Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration Article v11bt24a003 (Proceedings of the ASME Turbo Expo; Vol. 11B). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/GT2023-101771

Tümergin, Özge ; Ertekin, Şevket ; Kara, Aliyye et al. / PROBABILISTIC LIFE ESTIMATION OF TURBINE SHAFT BOLTED JOINTS CONSIDERING THE EFFECT OF NONLINEAR STRESS GRADIENTS ON CRACK GROWTH RATES. Structures and Dynamics - Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration. American Society of Mechanical Engineers (ASME), 2023. (Proceedings of the ASME Turbo Expo).

@inproceedings{e26098d8f7e44acd94368a790390cf05,

title = "PROBABILISTIC LIFE ESTIMATION OF TURBINE SHAFT BOLTED JOINTS CONSIDERING THE EFFECT OF NONLINEAR STRESS GRADIENTS ON CRACK GROWTH RATES",

abstract = "Crack growth in mechanical components is determined by initial crack size and fracture toughness that have probabilistic distributions. With a focus on a turbine shaft bolted joint made of Inconel 718, fracture damage was examined during a test cycle while crack size and fracture toughness were random variables. A finite element model of a turbine was created to calculate the stress field in turbine components. Following, stress distribution around the potential crack zones was included in calculating the crack growth. Proposed approach was verified by making comparisons with the results of Nasgro. Probabilistic distribution of crack depth and length, expected life and probability of detecting a crack was included in crack growth analyses. Probability of failure of the stub shaft was calculated via Monte-Carlo simulations. Comparisons were made with the crack growth results of Nasgro to verify the developed methodology. Effect of inspection period on probability of detecting the cracks before failure was determined.",

keywords = "crack propagation, probabilistic analysis, Turbines",

author = "{\"O}zge T{\"u}mergin and {\c S}evket Ertekin and Aliyye Kara and Giz, {Ay{\c s}e Su} and Topak, {Emel Kula} and Ozturk, {Umud Esat} and Ata Muğan",

note = "Publisher Copyright: Copyright {\textcopyright} 2023 by ASME.; ASME Turbo Expo 2023: Turbomachinery Technical Conference and Exposition, GT 2023 ; Conference date: 26-06-2023 Through 30-06-2023",

year = "2023",

doi = "10.1115/GT2023-101771",

language = "English",

series = "Proceedings of the ASME Turbo Expo",

publisher = "American Society of Mechanical Engineers (ASME)",

booktitle = "Structures and Dynamics - Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration",

address = "United States",

}

Tümergin, Ö, Ertekin, Ş, Kara, A, Giz, AS, Topak, EK, Ozturk, UE & Muğan, A 2023, PROBABILISTIC LIFE ESTIMATION OF TURBINE SHAFT BOLTED JOINTS CONSIDERING THE EFFECT OF NONLINEAR STRESS GRADIENTS ON CRACK GROWTH RATES. in Structures and Dynamics - Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration., v11bt24a003, Proceedings of the ASME Turbo Expo, vol. 11B, American Society of Mechanical Engineers (ASME), ASME Turbo Expo 2023: Turbomachinery Technical Conference and Exposition, GT 2023, Boston, United States, 26/06/23. https://doi.org/10.1115/GT2023-101771

PROBABILISTIC LIFE ESTIMATION OF TURBINE SHAFT BOLTED JOINTS CONSIDERING THE EFFECT OF NONLINEAR STRESS GRADIENTS ON CRACK GROWTH RATES. / Tümergin, Özge; Ertekin, Şevket; Kara, Aliyye et al.
Structures and Dynamics - Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration. American Society of Mechanical Engineers (ASME), 2023. v11bt24a003 (Proceedings of the ASME Turbo Expo; Vol. 11B).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - PROBABILISTIC LIFE ESTIMATION OF TURBINE SHAFT BOLTED JOINTS CONSIDERING THE EFFECT OF NONLINEAR STRESS GRADIENTS ON CRACK GROWTH RATES

AU - Tümergin, Özge

AU - Ertekin, Şevket

AU - Kara, Aliyye

AU - Giz, Ayşe Su

AU - Topak, Emel Kula

AU - Ozturk, Umud Esat

AU - Muğan, Ata

PY - 2023

Y1 - 2023

N2 - Crack growth in mechanical components is determined by initial crack size and fracture toughness that have probabilistic distributions. With a focus on a turbine shaft bolted joint made of Inconel 718, fracture damage was examined during a test cycle while crack size and fracture toughness were random variables. A finite element model of a turbine was created to calculate the stress field in turbine components. Following, stress distribution around the potential crack zones was included in calculating the crack growth. Proposed approach was verified by making comparisons with the results of Nasgro. Probabilistic distribution of crack depth and length, expected life and probability of detecting a crack was included in crack growth analyses. Probability of failure of the stub shaft was calculated via Monte-Carlo simulations. Comparisons were made with the crack growth results of Nasgro to verify the developed methodology. Effect of inspection period on probability of detecting the cracks before failure was determined.

AB - Crack growth in mechanical components is determined by initial crack size and fracture toughness that have probabilistic distributions. With a focus on a turbine shaft bolted joint made of Inconel 718, fracture damage was examined during a test cycle while crack size and fracture toughness were random variables. A finite element model of a turbine was created to calculate the stress field in turbine components. Following, stress distribution around the potential crack zones was included in calculating the crack growth. Proposed approach was verified by making comparisons with the results of Nasgro. Probabilistic distribution of crack depth and length, expected life and probability of detecting a crack was included in crack growth analyses. Probability of failure of the stub shaft was calculated via Monte-Carlo simulations. Comparisons were made with the crack growth results of Nasgro to verify the developed methodology. Effect of inspection period on probability of detecting the cracks before failure was determined.

KW - crack propagation

KW - probabilistic analysis

KW - Turbines

UR - http://www.scopus.com/inward/record.url?scp=85177230407&partnerID=8YFLogxK

U2 - 10.1115/GT2023-101771

DO - 10.1115/GT2023-101771

M3 - Conference contribution

AN - SCOPUS:85177230407

T3 - Proceedings of the ASME Turbo Expo

BT - Structures and Dynamics - Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration

PB - American Society of Mechanical Engineers (ASME)

T2 - ASME Turbo Expo 2023: Turbomachinery Technical Conference and Exposition, GT 2023

Y2 - 26 June 2023 through 30 June 2023

ER -

Tümergin Ö, Ertekin Ş, Kara A, Giz AS, Topak EK, Ozturk UE et al. PROBABILISTIC LIFE ESTIMATION OF TURBINE SHAFT BOLTED JOINTS CONSIDERING THE EFFECT OF NONLINEAR STRESS GRADIENTS ON CRACK GROWTH RATES. In Structures and Dynamics - Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration. American Society of Mechanical Engineers (ASME). 2023. v11bt24a003. (Proceedings of the ASME Turbo Expo). doi: 10.1115/GT2023-101771

PROBABILISTIC LIFE ESTIMATION OF TURBINE SHAFT BOLTED JOINTS CONSIDERING THE EFFECT OF NONLINEAR STRESS GRADIENTS ON CRACK GROWTH RATES

Abstract

Publication series

Conference

Bibliographical note

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this