1118 Life Evaluation of 63Sn-37Pb Solder Under Multiaxial Creep-Fatigue

2001 ◽  
Vol 2001.76 (0) ◽  
pp. _11-35_-_11-36_ ◽  
Author(s):  
Takeshi SHIRATSUCHI ◽  
Masao SAKANE ◽  
Yutaka TSUKADA ◽  
Hideo NISHIMURA
Keyword(s):  
Life Evaluation ◽  
Creep Fatigue ◽  
Multiaxial Creep

scholarly journals Evaluation of Multiaxial Creep-fatigue Strength for High Chromium Steel under Non-proportional Loading

2019 ◽  
Vol 300 ◽  
pp. 07002
Author(s):  
Yuuki Kasamuta ◽  
Fumio Ogawa ◽  
Takamoto Itoh ◽  
Hiroyasu Tanigawa
Keyword(s):  
Chromium Steel ◽  
Fatigue Tests ◽  
Proportional Loading ◽  
High Chromium ◽  
Nuclear Fusion Reactor ◽  
Life Evaluation ◽  
Creep Fatigue ◽  
Strain Paths ◽  
Multiaxial Creep ◽  
Failure Life

This study discusses the result of creep-fatigue tests of a high-chromium steel, F82H which was designed as blanket structural materials of nuclear fusion reactor, carried out at room temperature to 823K in air. Strain paths applied were a push-pull loading and a circle loading in which normal and shear strain have 90 degree phase difference. The holding times used were 180 s and 600 s. Moreover, an evaluation of failure life by taking into account intensities of creep and non-proportionality is discussed based on both the life evaluation proposed by Itoh, et al and method of modified universal slopes. Availability of the equation for the life evaluation was confirmed by comparison with conventional universal slope method.

Structural Design and Life Assessment of a Molten Salt Solar Receiver

1985 ◽  
Vol 107 (3) ◽  
pp. 258-263 ◽  
Author(s):  
T. V. Narayanan ◽  
M. S. M. Rao ◽  
G. Carli
Keyword(s):  
Molten Salt ◽  
Structural Integrity ◽  
Life Assessment ◽  
Fatigue Life Assessment ◽  
Life Evaluation ◽  
Creep Fatigue ◽  
Asme Code ◽  
Safety And Reliability ◽  
Solar Receiver ◽  
Commercial Size

This paper discusses the structural integrity and creep-fatigue life assessment of a commercial size molten salt solar central receiver. The life evaluation is based on criteria that are a modified version of ASME Code Case N-47. These criteria are deemed conservative enough to provide a reasonable level of safety and reliability, and yet not so conservative as to impose severe economic penalties on the receiver. The justification for these criteria and their application to the receiver are discussed in detail.

Sensitivity of Estimated Tube Life to Material Property Variation

1983 ◽  
Vol 105 (1) ◽  
pp. 73-79 ◽  
Author(s):  
I. Berman ◽  
M. S. M. Rao
Keyword(s):  
Material Property ◽  
Failure Modes ◽  
Creep Damage ◽  
Cycle Number ◽  
Property Variation ◽  
Life Evaluation ◽  
Creep Fatigue ◽  
Incoloy 800 ◽  
Solar Receiver ◽  
Tube Life

The estimated tube life of the Incoloy 800 tubes of a solar receiver panel under nonaxisymmetric loading is compared for various material property assumptions. The basis of each life evaluation is an elastic-creep analytical study of up to 20 load cycles. The effect on tube life of a variation in the creep rate for the failure modes of creep ratcheting and creep fatigue is studied in some detail. As shown for these elastic-creep conditions, the creep damage and mean diametral strain accumulations per cycle decrease linearly over the calculated 20 cycles when plotted against cycle number on a log-log scale. The predictions of total creep damage and mean diametral strain in 10,000 cycles based on the extrapolated log-log scale curve are substantially lower than the predictions based on multiplication of the change in value of the 20th day of operation by 10,000. A limited evaluation of the effects of variations in other material parameters is also made.

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