scholarly journals On-Line Outlier Judgement, Deterioration Prediction and Residual Life Evaluation for Condition Based Maintenance

2009 ◽  
Vol 2009 (0) ◽  
pp. 79-84
Author(s):  
Satoru Goto ◽  
Yuhki Adachi ◽  
Shinji Katafuchi ◽  
Toshihiko Furue ◽  
Yoshitaka Uchida ◽  
...  
Keyword(s):  
Residual Life ◽  
Condition Based Maintenance ◽  
Life Evaluation ◽  
On Line

MEASURE COMPLEX SUPPORTING SAFETY AND EFFECTUVE OPERATION OF MUNICIPAL BUSES UNDER WINTER CONDITIONS

2020 ◽  
Vol 2020 (10) ◽  
pp. 37-41
Author(s):  
Sergey Bulatov
Keyword(s):  
Residual Life ◽  
Technical State ◽  
Manufacturing Equipment ◽  
Winter Conditions ◽  
On Line ◽  
State Changes ◽  
The City

The effectiveness of manufacturing equipment use taking into account its productivity and reliability for faulty parts of transmission units in municipal buses is estimated. The on-line mode is the most effective method of control allowing the tracking of the processes of technical state changes in municipal buses. As a result of monitoring there were obtained selected data on PAZ-3205 municipal bus operated under winter conditions in the city of Ohrenburg. During the trip there was recorded 39.1 l/100km petrol consumption. The residual life of the PAZ-3205 municipal bus was 1800km.

On-Line Health Monitoring Research on T-Joint of Main Steam Piping

2013 ◽  
Vol 330 ◽  
pp. 549-552 ◽  
Author(s):  
J.H. Jia ◽  
H.C. Zhang ◽  
X.Y. Hu ◽  
L.P. Cai ◽  
S.T. Tu
Keyword(s):  
High Temperature ◽  
Power Plant ◽  
Residual Life ◽  
Thermal Power ◽  
Creep Damage ◽  
Piping System ◽  
Main Challenge ◽  
On Line ◽  
Main Steam ◽  
Creep Monitoring

The main challenge of long-time creep monitoring on site is a reliable sensor. In this paper, a sensing device is developed specifically for high temperature creep monitoring. And it is applied to on-line monitor the strain of material on T-joint of main steam piping. Its reliability is verified theoretically using the finite element method and experimentally by high temperature on site test. The creep damage of the T joint is evaluated basing on the creep rate sensed by the sensing device. And the residual life is predicted for the piping system using the Monkman-Grant equation. This system is useful for safety assessment procedures in thermal power plant, nuclear power plant and petrochemical industries.

CREEP BEHAVIOR AND LIFE EVALUATION OF AGED P92 STEEL

2006 ◽  
Vol 20 (25n27) ◽  
pp. 4231-4236 ◽  
Author(s):  
BUMJOON KIM ◽  
BYEONGSOO LIM ◽  
DONGHYUN KI
Keyword(s):  
Residual Life ◽  
Creep Condition ◽  
Creep Tests ◽  
P92 Steel ◽  
Creep Properties ◽  
Small Punch ◽  
Punch Test ◽  
Life Evaluation ◽  
Long Time ◽  
The Stability

Creep strength and life of material is closely related with the microstructural characteristics. Components used under creep condition for long time are unable to maintain the stability of microstructure and experience degradation of material. From this viewpoint, it is necessary for safety and residual life of power plant to investigate creep properties of specimens prepared from the material cut directly from the operating service components. The small punch test has been developed as a useful method to estimate mechanical properties because of its miniaturized specimen size. In this study, small punch creep tests were carried out to investigate the effect of aging time on creep properties using P92 steel aged from 0~12100 hrs at 600°C.

The Discussion of Condition-Based Maintenance on Mine Cable

2014 ◽  
Vol 543-547 ◽  
pp. 612-616
Author(s):  
Chang Xin Di ◽  
Zhou Xing Fu
Keyword(s):  
Current Method ◽  
Condition Based Maintenance ◽  
Good Time ◽  
Actual Condition ◽  
Grey Theory ◽  
Minimum Entropy ◽  
Monitoring Methods ◽  
On Line ◽  
Diagnosis Model ◽  
State Diagnosis

Cable condition-based maintenance is a high pertinence maintenance mode, with a good time effectiveness and economic comparing with planned maintenance. Three steps are needed in the procedure of practicing condition-based maintenance on coal mine, which are choosing state parameters, on-line monitoring, and state diagnosis. Having an advantage and disadvantage analysis on common on-line monitoring methods, the methods are corresponding to different state parameters. Combining with the actual condition of mine, present that the additional low frequent current method is easy to perform, meanwhile, the method is both fit for MVV, MYJV cable and MYP cable. Separately introduce two kinds of on-line diagnosis methods, one is based on the decision tree, and the other is base on fuzzy grey theory. The former adopt minimum entropy to choose testing feature, furthermore generate sub trees, the latter choose weight coefficient which according to the professors experiences to form cable diagnosis model. State diagnosis is the core in cable state maintenance, so how to establish an intact, scientific diagnosis model is the key.

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