scholarly journals Development of a New Material Test System in a Simulated Gas Turbine Combustion Atmosphere

2013 ◽  
Vol 62 (2) ◽  
pp. 143-148 ◽  
Author(s):  
Satoshi YAMAGISHI ◽  
Masakazu OKAZAKI ◽  
Rajivgandhi SUBRAMANIAN ◽  
Ryohei NOMURA ◽  
Hirotaka FUKANUMA
Keyword(s):  
Gas Turbine ◽  
Test System ◽  
Material Test ◽  
New Material ◽  
Combustion Atmosphere ◽  
Gas Turbine Combustion ◽  
Material Test System

Tearing and Stabbing Strength of Industrial Woven Fabrics

2011 ◽  
Vol 181-182 ◽  
pp. 355-360 ◽  
Author(s):  
Ping Wang
Keyword(s):  
Structural Parameters ◽  
Failure Mechanisms ◽  
Test System ◽  
Woven Fabrics ◽  
Woven Fabric ◽  
Mechanical Behaviors ◽  
Tear Strength ◽  
Material Test ◽  
Material Test System

Woven fabrics are widely used in industry. In this paper, mechanical behaviors such as tear strength and stab strength of four kinds of woven fabric with different structural parameters were tested on Material Test System (MTS810.23). The tests were all conducted on both warp and weft directions. The failure morphologies of each woven fabric were observed to unveil the corresponding failure mechanisms.

scholarly journals A Comparative Study on Fault Detection Methods for Gas Turbine Combustion Systems

Energies ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 389
Author(s):  
Jinfu Liu ◽  
Zhenhua Long ◽  
Mingliang Bai ◽  
Linhai Zhu ◽  
Daren Yu
Keyword(s):  
Fault Detection ◽  
Gas Turbine ◽  
Gas Turbines ◽  
Operating Conditions ◽  
Detection Methods ◽  
Distribution Model ◽  
Outlet Temperature ◽  
Combustion System ◽  
Comparison Results ◽  
Gas Turbine Combustion

As one of the core components of gas turbines, the combustion system operates in a high-temperature and high-pressure adverse environment, which makes it extremely prone to faults and catastrophic accidents. Therefore, it is necessary to monitor the combustion system to detect in a timely way whether its performance has deteriorated, to improve the safety and economy of gas turbine operation. However, the combustor outlet temperature is so high that conventional sensors cannot work in such a harsh environment for a long time. In practical application, temperature thermocouples distributed at the turbine outlet are used to monitor the exhaust gas temperature (EGT) to indirectly monitor the performance of the combustion system, but, the EGT is not only affected by faults but also influenced by many interference factors, such as ambient conditions, operating conditions, rotation and mixing of uneven hot gas, performance degradation of compressor, etc., which will reduce the sensitivity and reliability of fault detection. For this reason, many scholars have devoted themselves to the research of combustion system fault detection and proposed many excellent methods. However, few studies have compared these methods. This paper will introduce the main methods of combustion system fault detection and select current mainstream methods for analysis. And a circumferential temperature distribution model of gas turbine is established to simulate the EGT profile when a fault is coupled with interference factors, then use the simulation data to compare the detection results of selected methods. Besides, the comparison results are verified by the actual operation data of a gas turbine. Finally, through comparative research and mechanism analysis, the study points out a more suitable method for gas turbine combustion system fault detection and proposes possible development directions.

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