Research on the Remaining Service Life Prediction of Mechanical Equipment Based on Similarity Principle

2018 ◽  
Author(s):  
Le Wang
Keyword(s):  
Service Life ◽  
Life Prediction ◽  
Service Life Prediction ◽  
Mechanical Equipment ◽  
Similarity Principle ◽  
Remaining Service Life

Safety Assessment and Remaining Service Life Prediction of Sandwich Marine Air Bottles

2013 ◽  
Vol 456 ◽  
pp. 324-329
Author(s):  
Guan Jun He ◽  
Ai Min Diao
Keyword(s):  
Growth Rate ◽  
Fatigue Crack ◽  
Crack Growth Rate ◽  
Service Life ◽  
Life Prediction ◽  
Safety Assessment ◽  
Service Life Prediction ◽  
Theoretical Formula ◽  
Remaining Service Life ◽  
Marine Air

Based on the fatigue failure analysis of marine air bottles, the research on the safety assessment and remaining service life prediction is conducted in this paper. Particularly, the method of sandwich evaluation is obtained via sandwich characterization and the formula to calculate the fatigue crack growth rate is obtained via fatigue crack testing: three typical types of sandwich on marine air bottles are investigated, and the corresponding safety assessment results as well as the critical sandwich size are obtained. It is seen that the theoretical formula is valid, and that the air bottle can be safely used till next cycle as long as the initial sandwich angle depth less than 10°.

Remaining Service Life Prediction of Reinforced Stone Arch Bridge

2011 ◽  
Vol 90-93 ◽  
pp. 1127-1131
Author(s):  
Feng Qi Guo ◽  
Zhi Wu Yu
Keyword(s):  
Service Life ◽  
Life Prediction ◽  
Scientific Basis ◽  
Service Life Prediction ◽  
Time Dependent ◽  
Conservation Units ◽  
Arch Bridge ◽  
Remaining Service Life ◽  
Arch Bridges ◽  
Management And Conservation

The remaining service life of reinforced stone arch bridges is of great concern to management and conservation units. It is also the scientific basis for decision to next reinforced maintenance or rebuild. The concept of time-dependent reliability is introduced. Accoding to the most common section enlargement reinforcement method, the load and resistance of the structures are analyzed. The analysis methods and steps of life prediction are proposed, and the remaining service life is obtained. Based on above methods, an engineering example is given, the service life forecast calculation of reinforced stone arch bridges is discussed.

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