Study on dynamic strength evaluation method of piping systems, 4; Relationship between energy and fracture on vibration fatigue fracture

Minagawa, Keisuke*; Fujita, Satoshi*; Kitamura, Seiji ; Okamura, Shigeki

Mechanical structures installed in nuclear power plants such as piping are usually designed staically in elastic region. Although these mechanical structures have sufficient seismic safety margin, comprehending the ultimate strength is very important in order to improve of the seismic safety reliability in unexpected severe earthquake. The ultimate strength of piping is investigated from the viewpoint of energy balance method in this research. Vibration fracture experiments that lead one mass model to fatigue fracture are carried out in order to investigate the relationship between input energy and fracture.

Language	:	Japanese
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Meeting title	:	日本原子力学会2007年春の年会
Held date	:	2007/03
Location (city)	:	名古屋
Location (country)	:	日本
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Keywords	:	no keyword
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Cooperating Institute	:	東京電機大学

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Registration No. : BB20063192
JAEA Abstracts No. :
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