Reliability
Strength Calculation and Fatigue Reliability Analysis of Typical Components for CNG Engine
Valve actuating mechanism and cylinder head cover have become an important part of new CNG(Compressed Natural Gas) engine.The valve and valve seat of CNG engine work under high mechanical load,thermal load and erosion of corrosive gases.Due to the poor working conditions,the sinking of the valve,the increasing of harmful gas in the combustion chamber and the [...]
Study on the Reliability of Residual Current Protection of CM2L MCCB
Residual current circuit breaker(viz. moulded case circuit breaker with residual current protection) is a type of new low-voltage safe protection device, it can offer not only overload and short circuit protection but also avoid the electric shock and fire accident.The study on the reliability of residual current circuit breaker is very important for improving the [...]
Optimization Design of Auxiliry Power Wiring for 1000MW Units
As the development of economy, the demand of electricity is increasing.So large province 1000MW coal-fired units that coal consumption is relatively small, effort is great , the rate of plant consumption is low and investment of per kilowatt is relatively small will be more and more applied in the power market,these large-capacity generating units will [...]
Reliability and Optimization Design on Shell of Moving Supercavitation
Up to now, the cavitations phenomenon has been already experienced several generations’understanding and researching since discovered. The first supercavitating torpedo was manufactured by Russia, which aroused the fever of study the supercavitation in many countries. The main contributions of this thesis are as follows:A brief review of the development of supercavitation profile in countries was [...]
The Assessment of the Reliability of Railway’s Power Distribution System Based on Multiple Factors
The railway’s power distribution system is important to the railway’s power supply system. For supplying for many important equipment and devices, which are used to keep the railway normally working, the reliability of the railway’s power distribution system is quite important for the railway’s safety and reliability.The railway’s power distribution system is exposed in the [...]
Study on the Reliability Analysis of Particular Equipment
Since the 90′s of the last century, special equipment researched, manufactured by an enterprise has widely popularity in the industry. However, downtime and maintenance costs caused by the higher failure rate of equipment at this stage, has seriously affected the normal operation of equipment and the user’s production day-to-day. So the top priority of the [...]
Stability Analysis of Tunnel Surrounding Rock Based on Kriging Model
The general engineering structure stable reliability analysis has two main steps. First, select the most superior distribution of the random parameter, second establish structure function functional equation to carry on reliability computation. But the multiple structure has the unique characteristic on mechanics mechanism, causes the structure function to be the highly complex function or the [...]
Study on the Cost Model of Operation and Management of Govemment Pay-loan Expressway in ShanDong Province
Expressway operating cost management is an important part of expressway operation and management. A reasonable expressway operation and management cost standard is very important for expressway operation and maintainence. At present,there is no uniform standard about operation and management cost of government pay-loan expressway in our country. Different regions have different operation and management cost [...]
Voltage Transformer Insulation Reliability Analysis and Design
At present, most of voltage transformer insulation designs of products adopt traditional design method, the cycle of the design is long and quality of the design product is poor. Modern design method of reliability theory from the design stage will be introduced to the product, to greatly reduce the cost of design, manufacturing, economize resources, [...]
Statistical Analysis on Creep Rupture Property of Heat-Resistant Steel
High temperature components have been widely used in petrochemical industry,power plant,aerospace industry and other applications.After long-term service in high temperatures and pressures simultaneously,their creep rupture properties are greatly decreased due to microstructure degradation and the accumulation of damage.Because of the need in safety issue as well as in economizing fund by maintaining the existing construction [...]