A new approach to predict creep rupture of Grade 92 steel under multiaxial stress states

The extension of the available stress-based predictive models from uniaxial to multiaxial feature is uncertain due to the difficulty to justify the model transferability to the cases which involves complex deformation and fracture mechanisms. This paper presents a new approach to predict the creep r...

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Main Authors:	Nasrul Azuan, Alang, Nikbin, Kamran M.
Format:	Article
Language:	English
Published:	Elsevier Ltd 2019
Subjects:	T Technology (General) TA Engineering (General). Civil engineering (General) TJ Mechanical engineering and machinery
Online Access:	http://umpir.ump.edu.my/id/eprint/26355/ http://umpir.ump.edu.my/id/eprint/26355/ http://umpir.ump.edu.my/id/eprint/26355/ http://umpir.ump.edu.my/id/eprint/26355/1/A%20new%20approach%20to%20predict%20creep%20rupture%20of%20Grade%2092%20.pdf

id	ump-26355
recordtype	eprints
spelling	ump-263552019-12-09T03:31:54Z http://umpir.ump.edu.my/id/eprint/26355/ A new approach to predict creep rupture of Grade 92 steel under multiaxial stress states Nasrul Azuan, Alang Nikbin, Kamran M. T Technology (General) TA Engineering (General). Civil engineering (General) TJ Mechanical engineering and machinery The extension of the available stress-based predictive models from uniaxial to multiaxial feature is uncertain due to the difficulty to justify the model transferability to the cases which involves complex deformation and fracture mechanisms. This paper presents a new approach to predict the creep rupture life of Grade 92 steel under multiaxial stress state as the case of notched bar samples using Kachanov's Continuum Damage Mechanics (CDM) model. Combining the CDM model with the concept of Hayhurst's representative stress and accounting two extreme conditions; fully dislocation-controlled and diffusion-controlled creep mechanisms provide the bounds for short- and long-term rupture data of notched bar up to 10,000 h. Although the CDM is scientifically relevant and fundamental in their approach, it is generally complex and contains too many variables. Therefore, it needs proper measurements or numerically intensive to make the model acceptable for industrial applications. Alternatively, the recent developed strain-based exponential-type predictive model which links globally uniform failure strain with a multiaxial constraint factor was employed with the intention to reduce the large number of CDM parameters. The approach is relatively simple yet reliable to be used for high temperature creep rupture assessment. Elsevier Ltd 2019-08-23 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/26355/1/A%20new%20approach%20to%20predict%20creep%20rupture%20of%20Grade%2092%20.pdf Nasrul Azuan, Alang and Nikbin, Kamran M. (2019) A new approach to predict creep rupture of Grade 92 steel under multiaxial stress states. International Journal of Mechanical Sciences, 163. pp. 1-2. ISSN 0020-7403 https://doi.org/10.1016/j.ijmecsci.2019.105096 https://doi.org/10.1016/j.ijmecsci.2019.105096
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	T Technology (General) TA Engineering (General). Civil engineering (General) TJ Mechanical engineering and machinery
spellingShingle	T Technology (General) TA Engineering (General). Civil engineering (General) TJ Mechanical engineering and machinery Nasrul Azuan, Alang Nikbin, Kamran M. A new approach to predict creep rupture of Grade 92 steel under multiaxial stress states
description	The extension of the available stress-based predictive models from uniaxial to multiaxial feature is uncertain due to the difficulty to justify the model transferability to the cases which involves complex deformation and fracture mechanisms. This paper presents a new approach to predict the creep rupture life of Grade 92 steel under multiaxial stress state as the case of notched bar samples using Kachanov's Continuum Damage Mechanics (CDM) model. Combining the CDM model with the concept of Hayhurst's representative stress and accounting two extreme conditions; fully dislocation-controlled and diffusion-controlled creep mechanisms provide the bounds for short- and long-term rupture data of notched bar up to 10,000 h. Although the CDM is scientifically relevant and fundamental in their approach, it is generally complex and contains too many variables. Therefore, it needs proper measurements or numerically intensive to make the model acceptable for industrial applications. Alternatively, the recent developed strain-based exponential-type predictive model which links globally uniform failure strain with a multiaxial constraint factor was employed with the intention to reduce the large number of CDM parameters. The approach is relatively simple yet reliable to be used for high temperature creep rupture assessment.
format	Article
author	Nasrul Azuan, Alang Nikbin, Kamran M.
author_facet	Nasrul Azuan, Alang Nikbin, Kamran M.
author_sort	Nasrul Azuan, Alang
title	A new approach to predict creep rupture of Grade 92 steel under multiaxial stress states
title_short	A new approach to predict creep rupture of Grade 92 steel under multiaxial stress states
title_full	A new approach to predict creep rupture of Grade 92 steel under multiaxial stress states
title_fullStr	A new approach to predict creep rupture of Grade 92 steel under multiaxial stress states
title_full_unstemmed	A new approach to predict creep rupture of Grade 92 steel under multiaxial stress states
title_sort	new approach to predict creep rupture of grade 92 steel under multiaxial stress states
publisher	Elsevier Ltd
publishDate	2019
url	http://umpir.ump.edu.my/id/eprint/26355/ http://umpir.ump.edu.my/id/eprint/26355/ http://umpir.ump.edu.my/id/eprint/26355/ http://umpir.ump.edu.my/id/eprint/26355/1/A%20new%20approach%20to%20predict%20creep%20rupture%20of%20Grade%2092%20.pdf
first_indexed	2023-09-18T22:40:59Z
last_indexed	2023-09-18T22:40:59Z
_version_	1777416913078452224

A new approach to predict creep rupture of Grade 92 steel under multiaxial stress states

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