Condition-based maintenance of engineering systems with periodic inspection

2019 ◽  
Vol 135 ◽  
pp. 03056
Author(s):  
Ruben Kazaryan

In engineering systems, which are used in construction industry and its production (buildings, constructions, roads), two fundamentally different ways of mechanical joint are used: non-collapsible and collapsible. Some architects relate non-collapsible objects to monolithic and consider their recycling as a difficult and expensive process. Compression joints on self-locking fittings can be considered as non-collapsible as well. A compression connection cannot be disassembled without destroying. Collapsible joint differs from non-collapsible by the following features: 1. You can disassemble it to original components according to a prior technology, identify and change defective elements or add some other components. 2. It requires periodic inspection and maintenance because of climatic conditions (temperature changes, pressure changes, wind loads, etc.), and the specificity of operation of this joint leads to a decrease in its mechanical properties. 3. It is forbidden to make them monolithic, so collapsible joints are mounted in an accessible way. Collapsible finishing system is a new fundamental direction of building reconstruction in the TTS system “man-technologyenvironment” in high-rise construction objects.


2019 ◽  
Vol 265 ◽  
pp. 07007
Author(s):  
Ruben Kazaryan

In engineering systems, which are used in construction industry and its production (buildings, constructions, roads), two fundamentally different ways of mechanical joint are used: non-collapsible and collapsible. Some architects relate non-collapsible objects to monolithic and consider their recycling as a difficult and expensive process. Compression joints on self-locking fittings can be considered as non-collapsible as well. A compression connection cannot be disassembled without destroying. Collapsible joint differs from non-collapsible by the following features: 1. You can disassemble it to original components according to a prior technology, identify and change defective elements or add some other components. 2. It requires periodic inspection and maintenance because of climatic conditions (temperature changes, pressure changes, wind loads, etc.), and the specificity of operation of this joint leads to a decrease in its mechanical properties. 3. It is forbidden to make them monolithic, so collapsible joints are mounted in an accessible way.


2013 ◽  
Vol 588 ◽  
pp. 290-301 ◽  
Author(s):  
Jacek S. Stecki ◽  
Shanna Rudov-Clark ◽  
Chris Stecki

Aircraft and avionics, offshore, marine and other complex engineering systems often operate in harsh environmental and operational conditions and must meet stringent requirements of cost, reliability, safety and maintainability. To achieve these aims modern design management and a vast array of computer aided techniques are applied during the design and testing stages. Maintainability requirements, long ignored by designers and manufacturers, assumed great importance and forced rethinking of the way the design of new systems and their maintenance should be carried out. One of the technologies to deal with this problem is Condition Based Maintenance (CBM) which is used widely in various industries to reduce risk and improve system availability. CBM is based on detection and diagnosis of failures, assessing effects of such failures on life of the system health and prescribing maintenance actions to extend system life. However, the experience with CBM shows that high expectation of reduced costs, improve maintainability etc. are often not met, and the major reasons for it are problems with risk identification (what failures can be expected?) and detection (what sensors to select?). The paper reviews these problems and other barriers to effectiveness of CBM and presents model-based approach to risk identification which can lead to improved CBM.


2020 ◽  
pp. 60-71
Author(s):  
O.V. Abramov ◽  

The paper deals with the problem of managing the technical condition (choosing the optimal operation strategy) of complex high-duty engineering systems. The research focuses on the synthesis of the op-eration strategy based on the guaranteed result principle and the ideas of the functional-parametric as-pects of the reliability theory.


2012 ◽  
Author(s):  
Paula Schnurr ◽  
Matthew Friedman ◽  
Thomas Oxman ◽  
Allen Dietrich ◽  
Mark Smith ◽  
...  

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