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Computer aided analysis for Failure Modes and Effects Analysis (FMEA) is an important development direction. Failure analysis (failure mode and failure mechanism analysis) is the most critical and the most difficult step in implementation of FMEA. The procedure of failure analysis is lack of formal and standardized method, which hindering the computer integrated process. In face of complex products,...
Tapered roller bearing (TRB), as a type of roller bearing, can provide the good ability of bearing larger combined load in the directions of radial and axial. It, therefore, has been extensively considered in many aspects of the industry, especially in the domain of rotary machine. And the characteristics of TRBs are highly influenced by different operation conditions. Based on the theory known as...
The technical manual of complex equipment has vast text, which makes it slow for relevant staff to obtain knowledge, and then restricts efficiency. IETM is made of unstructured text or pictures, and this kind of form does not improve efficiency of obtaining knowledge radically or make use of computer to get further support. To deal with this problem, this paper researches domain ontology of technical...
Field maintenance data represents the performance of product better under actual conditions of use and maintenance, which has important significance for the research of spare parts for ships. Currently, failure data are obtained by the way of routine inspection to research the life of spare parts. Because those inspections are not constantly monitoring but timing detection, the failure times cannot...
The paper is concerned with a hazmat vehicle routing problem. Two objectives are considered: (1) minimizing the total travel cost and (2) minimizing the total travel risk. A path-based risk estimation method is proposed to make the risk analysis more reasonable. A numerical study is carried out and the non-dominated solution is calculated by the modified ant colony optimization. Results show that...
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