Analysis on Critical CTOD of Long-Term Used Penstock

Fumito Kawamura; Masazumi Miura; Ryuichiro Ebara; Keiji Yanase

doi:10.4028/www.scientific.net/KEM.741.57

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 741Analysis on Critical CTOD of Long-Term Used...

Analysis on Critical CTOD of Long-Term Used Penstock

Abstract:

Many studies have been conducted to characterize the fracture toughness of structural steels and their welded joints. However, most studies focus on newly developed steels, and the number of studies on the fracture toughness of long-term used steels in structural components is rather limited. Furthermore, a lack of data on the fracture toughness causes difficulties in evaluating the structural integrity of existing steel structures. In this study, CTOD tests were performed to characterize the fracture toughness of penstock that has been in service for 50 years. By measuring the critical crack tip opening displacement in conjunction with analysis for chemical compositions, the characteristics of fracture toughness were investigated.

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Periodical:

Key Engineering Materials (Volume 741)

Pages:

57-62

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.741.57

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Online since:

June 2017

Authors:

Fumito Kawamura, Masazumi Miura, Ryuichiro Ebara, Keiji Yanase*

Keywords:

Carbon Steel, Chemical Compositions, CTOD, Fracture Toughness, Long-Term Used Penstock

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References

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