Non-Destructive Inspection-Based Methods for Fatigue Reliability Evaluation

2004 ◽  
pp. 32-55
Author(s):  
Sankaran Mahadevan ◽  
Ruoxue Zhang
Keyword(s):  
Reliability Evaluation ◽  
Fatigue Reliability ◽  
Non Destructive

The Fatigue Reliability Evaluation & Improvement of the Single-Arm Subway Current Collector

2012 ◽  
Vol 215-216 ◽  
pp. 826-831 ◽  
Author(s):  
Yu Chen ◽  
Zhi Ming Liu ◽  
Qiang Li
Keyword(s):  
Fatigue Life ◽  
Calculation Result ◽  
Dynamic Stress ◽  
Current Collector ◽  
Reliability Evaluation ◽  
Fatigue Reliability ◽  
Railway Vehicles ◽  
Load Spectra ◽  
Reliability Method

This study developed a fatigue reliability method for evaluating and improving the key parts on railway vehicles, which was applied to real structures. The study involved a type of single-arm current collector, while its contact shoe often collapsed in operation and needs improvements. The dynamic stress data from the actual line was tested and converted to load spectra based on damage consistency rule, and then the fatigue life of the contact shoe structure was achieved. The calculation result comes to correspond to its operation life. Based on the method, an improving plan for the structure was developed under optimizing algorithms.

A Time-Variant Reliability Evaluation Method on Fatigue of Riser System

2010 ◽  
Author(s):  
Hai Sun ◽  
Liping Sun ◽  
Wei Dai
Keyword(s):  
Production System ◽  
Evaluation Method ◽  
Failure Modes ◽  
Reliability Evaluation ◽  
Fatigue Reliability ◽  
Integrity Assessment ◽  
Offshore Production ◽  
Main Factors

Riser has been and will be an important part of the offshore production system. Due to the complexity of environment, reliability evaluation is needed for the riser system to ensure the safety and durability. The analysis of the failure modes of riser system was studied in this article, firstly, the main factors of which may lead to failure of riser system were analyzed and classified; secondly, a time-variant reliability evaluation method was proposed to calculate fatigue reliability of riser system; finally, riser fatigue reliability of a certain FPSO is calculated by the proposed method, the results showed that time-variant reliability can better externalize safety of riser during structural service. The proposed method of this paper was significance in safety and integrity assessment of riser system.

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