In this paper stress intensity factors of a longitudinal semielliptical surface crack on the inner surface in a compound tube subjected to internal pressure are presented. Variations of modulus of elasticity and thickness for the inner part of the tube are used in order to evaluate their effects on the normalized stress intensity factors. The boundary element method is used to analyze the problems. The increasing of thickness of the inner region causes decreasing values of the normalized stress intensity factor, as the modulus of elasticity for the inner part is greater than that of the outer part. Conversely, if the modulus of elasticity for the inner region is smaller, the increasing of thickness of the inner part would give increasing values of the normalized stress intensity factor. A larger inner radius and smaller thickness of the tube gives a higher normalized stress intensity factor.
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e-mail: judha@uniten.edu.my
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December 2009
Technical Briefs
Evaluation on an Internal Surface Crack in a Compound Tube
A. A. Ali,
A. A. Ali
Department of Mechanical Engineering,
Universiti Tenaga Nasional
, Km 7 Jalan Kajang-Puchong, 43009 Kajang Selangor, Malaysia
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J. Purbolaksono,
J. Purbolaksono
Department of Mechanical Engineering,
e-mail: judha@uniten.edu.my
Universiti Tenaga Nasional
, Km 7 Jalan Kajang-Puchong, 43009 Kajang Selangor, Malaysia
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A. Khinani,
A. Khinani
Department of Mechanical Engineering,
Universiti Tenaga Nasional
, Km 7 Jalan Kajang-Puchong, 43009 Kajang Selangor, Malaysia
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A. Z. Rashid,
A. Z. Rashid
Department of Mechanical Engineering,
Universiti Tenaga Nasional
, Km 7 Jalan Kajang-Puchong, 43009 Kajang Selangor, Malaysia
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F. Tarlochan
F. Tarlochan
Department of Mechanical Engineering,
Universiti Tenaga Nasional
, Km 7 Jalan Kajang-Puchong, 43009 Kajang Selangor, Malaysia
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A. A. Ali
Department of Mechanical Engineering,
Universiti Tenaga Nasional
, Km 7 Jalan Kajang-Puchong, 43009 Kajang Selangor, Malaysia
J. Purbolaksono
Department of Mechanical Engineering,
Universiti Tenaga Nasional
, Km 7 Jalan Kajang-Puchong, 43009 Kajang Selangor, Malaysiae-mail: judha@uniten.edu.my
A. Khinani
Department of Mechanical Engineering,
Universiti Tenaga Nasional
, Km 7 Jalan Kajang-Puchong, 43009 Kajang Selangor, Malaysia
A. Z. Rashid
Department of Mechanical Engineering,
Universiti Tenaga Nasional
, Km 7 Jalan Kajang-Puchong, 43009 Kajang Selangor, Malaysia
F. Tarlochan
Department of Mechanical Engineering,
Universiti Tenaga Nasional
, Km 7 Jalan Kajang-Puchong, 43009 Kajang Selangor, MalaysiaJ. Pressure Vessel Technol. Dec 2009, 131(6): 064501 (4 pages)
Published Online: October 28, 2009
Article history
Received:
October 1, 2008
Revised:
June 10, 2009
Published:
October 28, 2009
Citation
Ali, A. A., Purbolaksono, J., Khinani, A., Rashid, A. Z., and Tarlochan, F. (October 28, 2009). "Evaluation on an Internal Surface Crack in a Compound Tube." ASME. J. Pressure Vessel Technol. December 2009; 131(6): 064501. https://doi.org/10.1115/1.4000346
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