Creep damage and fracture of weldments at high temperature

Shan Tung Tu; Peter Segle; Jian Ming Gong

doi:10.1016/j.ijpvp.2003.11.010

Creep damage and fracture of weldments at high temperature

Shan Tung Tu, Peter Segle, Jian Ming Gong

School of Mechanical and Power Engineering

Research output: Contribution to journal › Article › peer-review

66 Scopus citations

Abstract

Recent research activities on high temperature behaviour of welded structures are briefly reviewed in this paper. A local deformation measuring technique is developed to determine the creep properties of weldment constituents in light of optical fiber marking and remote monitoring technique. A damage mechanics approach is introduced to study the life reduction due to the presence of a weld and the effect of weld repair. Different types of weldments have been studied to obtain the general understanding of the damage developed in the welded structures. Finally, the high temperature creep crack growth (CCG) in weldments is discussed. A modified time-dependent fracture parameter is proposed to interpret the CCG in the weldments.

Original language	English
Pages (from-to)	199-209
Number of pages	11
Journal	International Journal of Pressure Vessels and Piping
Volume	81
Issue number	2
DOIs	https://doi.org/10.1016/j.ijpvp.2003.11.010
State	Published - Feb 2004

Keywords

Creep damage
High temperature
Weldment

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10.1016/j.ijpvp.2003.11.010

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abstract = "Recent research activities on high temperature behaviour of welded structures are briefly reviewed in this paper. A local deformation measuring technique is developed to determine the creep properties of weldment constituents in light of optical fiber marking and remote monitoring technique. A damage mechanics approach is introduced to study the life reduction due to the presence of a weld and the effect of weld repair. Different types of weldments have been studied to obtain the general understanding of the damage developed in the welded structures. Finally, the high temperature creep crack growth (CCG) in weldments is discussed. A modified time-dependent fracture parameter is proposed to interpret the CCG in the weldments.",

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AB - Recent research activities on high temperature behaviour of welded structures are briefly reviewed in this paper. A local deformation measuring technique is developed to determine the creep properties of weldment constituents in light of optical fiber marking and remote monitoring technique. A damage mechanics approach is introduced to study the life reduction due to the presence of a weld and the effect of weld repair. Different types of weldments have been studied to obtain the general understanding of the damage developed in the welded structures. Finally, the high temperature creep crack growth (CCG) in weldments is discussed. A modified time-dependent fracture parameter is proposed to interpret the CCG in the weldments.

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JF - International Journal of Pressure Vessels and Piping

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ER -

Creep damage and fracture of weldments at high temperature

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Keywords

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