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주철관의 잔존강도 평가에 관한 연구sessment of residual tensile strength on cast iron water pipes
- Other Titles
- sessment of residual tensile strength on cast iron water pipes
- Issue Date
- Dec-2006
- Publisher
- 대한상하수도학회
- Keywords
- Water pipe; Pit corrosion; Residual strength; Fracture toughness; 상수도관; 공식; 잔존강도; 파괴인성* Corresponding author Tel:+82-42-860-0387; Tel:+82-42-860-0399; Email : juhwan@kowaco.or.kr(Kim; J.H); Water pipe; Pit corrosion; Residual strength; Fracture toughness
- Citation
- 상하수도학회지, v.20, no.6, pp.867 - 874
- Journal Title
- 상하수도학회지
- Volume
- 20
- Number
- 6
- Start Page
- 867
- End Page
- 874
- ISSN
- 1225-7672
- Abstract
- The goal of this study is to assess cast iron pipes(CIPs) and present a residual tensile strength prediction model using pit characteristics and fracture toughness. The results is the followings. First, average pit depths of collected CIPs were in the range from 0.63 to 6.49 mm, loss of tensile strength compared with net metallic tensile strength were from -7.06 to 67.91 percent. Second, fracture toughness for NS-CR-1, NS-CR-2, and NS(2)-CR-1 were in the range from 62.85 to 89.39 kgf/㎟ , and average of those samples was 73.69 kgf/㎟ on CIPs. Third, the models developed in this study by using pit characteristics and fracture toughness showed a little good correlation for measured residual tensile strength, and the results will be expected to help for water utilities to manage CIPs in the aspect of rehabilitation and assessment of structural safety on CIPs
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Related Researcher
- HONG, SEONG HO
- College of Engineering (Department of Chemical)