Fatigue life monitoring program of RMAF MiG-29 / Wahyu Kuntjoro ... [et al.]

The Royal Malaysian Airforce (RMAF) operates one squadron of MiG-29 which were designed on Safe Life principle. RMAF conducts a fatigue life monitoring program to these airplanes. This activity is conducted based on the experience of having the fatigue life monitoring program to the RMAF F/A-18D. Th...

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Main Authors:	Kuntjoro, Wahyu, Bahari, Ibrahim, Ujang, Abdul Ghani, M Mydin, Assanah
Format:	Article
Language:	English
Published:	Research Management Institute (RMI) 2008
Subjects:	Computer software Fatigue testing machines Malaysia
Online Access:	http://ir.uitm.edu.my/id/eprint/12831/ http://ir.uitm.edu.my/id/eprint/12831/1/AJ_WAHYU%20KUNTJORO%20SRJ%2008%201.pdf

id	uitm-12831
recordtype	eprints
spelling	uitm-128312016-05-27T10:42:04Z http://ir.uitm.edu.my/id/eprint/12831/ Fatigue life monitoring program of RMAF MiG-29 / Wahyu Kuntjoro ... [et al.] Kuntjoro, Wahyu Bahari, Ibrahim Ujang, Abdul Ghani M Mydin, Assanah Computer software Fatigue testing machines Malaysia The Royal Malaysian Airforce (RMAF) operates one squadron of MiG-29 which were designed on Safe Life principle. RMAF conducts a fatigue life monitoring program to these airplanes. This activity is conducted based on the experience of having the fatigue life monitoring program to the RMAF F/A-18D. The fatigue life of RMAF MiG-29 is based on the wing-fuselage lug joint structure, and Low Cycle Fatigue (LCF) approach is adopted. The stress spectra of this component, is derived through mapping of g-spectra to the 1-g stress level of the lug. The g-history is obtained from the accelerator installed in the airplane, while the 1-g stress level is obtained by finite element modeling of the wing structure and lug joints. Rainflow cycle counting procedure was then applied. The fatigue characteristics (strain-life) of the lug material was obtained from the laboratory test, using the lug material sample, combined with the empirical formula of strain-life diagram. Notched effect is taken into account using Neuber theory. Mean stress effect is dealt with using Smith-Watson-Topper formula. Miner’s rule is used to calculate the fatigue damage accumulation. A fatigue life prediction software for RMAF MiG-29 which incorporates the above concepts had been developed. Currently, this software is operational with the RMAF MiG-29, and is being used as part of its Aircraft Structural Integrity Program (ASIP). This paper reports on the development of the fatigue life monitoring strategy and software for the RMAF MiG-29. Research Management Institute (RMI) 2008 Article PeerReviewed text en http://ir.uitm.edu.my/id/eprint/12831/1/AJ_WAHYU%20KUNTJORO%20SRJ%2008%201.pdf Kuntjoro, Wahyu and Bahari, Ibrahim and Ujang, Abdul Ghani and M Mydin, Assanah (2008) Fatigue life monitoring program of RMAF MiG-29 / Wahyu Kuntjoro ... [et al.]. Scientific Research Journal, 5 (1). pp. 27-38. ISSN 1675-7009
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Teknologi MARA
building	UiTM Institutional Repository
collection	Online Access
language	English
topic	Computer software Fatigue testing machines Malaysia
spellingShingle	Computer software Fatigue testing machines Malaysia Kuntjoro, Wahyu Bahari, Ibrahim Ujang, Abdul Ghani M Mydin, Assanah Fatigue life monitoring program of RMAF MiG-29 / Wahyu Kuntjoro ... [et al.]
description	The Royal Malaysian Airforce (RMAF) operates one squadron of MiG-29 which were designed on Safe Life principle. RMAF conducts a fatigue life monitoring program to these airplanes. This activity is conducted based on the experience of having the fatigue life monitoring program to the RMAF F/A-18D. The fatigue life of RMAF MiG-29 is based on the wing-fuselage lug joint structure, and Low Cycle Fatigue (LCF) approach is adopted. The stress spectra of this component, is derived through mapping of g-spectra to the 1-g stress level of the lug. The g-history is obtained from the accelerator installed in the airplane, while the 1-g stress level is obtained by finite element modeling of the wing structure and lug joints. Rainflow cycle counting procedure was then applied. The fatigue characteristics (strain-life) of the lug material was obtained from the laboratory test, using the lug material sample, combined with the empirical formula of strain-life diagram. Notched effect is taken into account using Neuber theory. Mean stress effect is dealt with using Smith-Watson-Topper formula. Miner’s rule is used to calculate the fatigue damage accumulation. A fatigue life prediction software for RMAF MiG-29 which incorporates the above concepts had been developed. Currently, this software is operational with the RMAF MiG-29, and is being used as part of its Aircraft Structural Integrity Program (ASIP). This paper reports on the development of the fatigue life monitoring strategy and software for the RMAF MiG-29.
format	Article
author	Kuntjoro, Wahyu Bahari, Ibrahim Ujang, Abdul Ghani M Mydin, Assanah
author_facet	Kuntjoro, Wahyu Bahari, Ibrahim Ujang, Abdul Ghani M Mydin, Assanah
author_sort	Kuntjoro, Wahyu
title	Fatigue life monitoring program of RMAF MiG-29 / Wahyu Kuntjoro ... [et al.]
title_short	Fatigue life monitoring program of RMAF MiG-29 / Wahyu Kuntjoro ... [et al.]
title_full	Fatigue life monitoring program of RMAF MiG-29 / Wahyu Kuntjoro ... [et al.]
title_fullStr	Fatigue life monitoring program of RMAF MiG-29 / Wahyu Kuntjoro ... [et al.]
title_full_unstemmed	Fatigue life monitoring program of RMAF MiG-29 / Wahyu Kuntjoro ... [et al.]
title_sort	fatigue life monitoring program of rmaf mig-29 / wahyu kuntjoro ... [et al.]
publisher	Research Management Institute (RMI)
publishDate	2008
url	http://ir.uitm.edu.my/id/eprint/12831/ http://ir.uitm.edu.my/id/eprint/12831/1/AJ_WAHYU%20KUNTJORO%20SRJ%2008%201.pdf
first_indexed	2023-09-18T22:49:31Z
last_indexed	2023-09-18T22:49:31Z
_version_	1777417450059464704

Fatigue life monitoring program of RMAF MiG-29 / Wahyu Kuntjoro ... [et al.]

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