Failure analysis of an ammonia refrigerant condenser tube

Autor:	Rakesh Kaul, N.G. Muralidharan, Baldev Raj, T. Jayakumar, K.V. Kasiviswanathan
Rok vydání:	1996
Předmět:	Toughness Materials science Mechanical Engineering Metallurgy technology industry and agriculture Fractography Fracture mechanics Welding respiratory system law.invention Refrigerant Cracking Operating temperature Mechanics of Materials law Catastrophic failure General Materials Science
Zdroj:	Journal of Materials Engineering and Performance. 5:241-246
ISSN:	1544-1024 1059-9495
Popis:	A detailed failure analysis was conducted on an ammonia refrigerant condenser tube component that failed catastrophically during its initial hours of operation. Evidence collected clearly demonstrated that the weld between a pipe and a dished end contained a sharp unfused region at its root (lack of penetration). Component failure had started from this weld defect. The hydrogen absorbed during welding facilitated crack initiation from this weld defect during storage of the component after welding. Poor weld toughness at the low operating temperature facilitated crack growth during startup, culminating in catastrophic failure as soon as the crack exceeded critical length.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a7221fbf10d68097b16c8fa34e1e9df2 https://doi.org/10.1007/bf02650894 Zobrazit plný text záznamu Full text from SpringerLink