Evaluation of Degradation of Heat Stressed Pipelines

Kuśmierczak, Sylvia

doi:10.21062/ujep/x.2015/a/1213-2489/mt/15/6/1006

Cited by 9 publications

(3 citation statements)

References 4 publications

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“…Every graduate of engineering disciplines in the technical practice meets with manifestations of limit states and degradation of technical objects [1][2][3]. The consequences of these processes must be solved in such a way as to ensure the required quality and safety, while ensuring the economic carrying capacity of the manufactured technical object.…”

Section: Introductionmentioning

confidence: 99%

Example of using complex system approach methodology by degradation of selected technical object

Kuśmierczak

Martin

2019

Engineering for Rural Development

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Every graduate of engineering fields in his technical practice will encounter manifestations of limit states and degradation of technical objects. The consequences of these processes must be solved so as to ensure the required quality and safety, while ensuring the economic viability of the manufactured technical object. The consequences of the degradation processes of the technical objects lead not only to undesirable changes of properties and consequent shortening of the life cycle of a technical object, but also to economic losses and endangering the safety of the user of this object. Therefore, it is necessary to apply such a system approach for the evaluation of degradation processes, which will be repeatable for different types of TO and will lead to the detection of causes of degradation of TO. The methodology of a comprehensive approach to the degradation processes of TO has these main steps: localization and description of TO degradation manifestations; theoretical analysis of internal and external TO factors; description of the actual status of the TO and the actual conditions under which it was issued; determination of the factors that may cause boundary states and degradation processes TO; assessment of TO degradation-TO analysis using microscopic, destructive and non-destructive tests; processing results, determining causes of TO degradation; concluding conclusions to avoid the development of degradation processes of TO, resp. limitation of TO degradation. This methodology will be applied when dealing with a particular case from technical manufacturing practice. It is part of Shaft Throttle, which was made of 11SMnPb30 automatic steel according to CSN EN 10027-1. On this component during the manufacturing process on the surface unwanted corrosion products appeared. The aim of this article is to demonstrate to students of technical fields the application of a complex system approach methodology to solve a particular problem.

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Section: Introductionmentioning

confidence: 99%

Example of using complex system approach methodology by degradation of selected technical object

Kuśmierczak

Martin

2019

Engineering for Rural Development

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“…Pipes of such large dimensions must be securely fastened to the structure. We deal with design, optimization and structural [1] and temperature [2], [3], [4], [10] numerical simulations of piping systems and supports. The design takes into account the resulting functionality and efficiency, manufacturability, assembly and safety during production and operation.…”

Section: Introductionmentioning

confidence: 99%

Parameterized Sub-systems of HVAC Piping System

Kalina¹,

Kemka²,

Chval³

2019

DAAAM Proceedings

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The goal of this paper is to introduce the proposed parameterized sub-systems of HVAC piping system (HVAC = heating, ventilation, air conditioning). Parameterized 3D models of piping sub-systems and supports of piping system were created. Using control parameters we can control not only the size of pipes and supports, but with logical parameters (0/1) and conditions, we can change the sub-system type, or show and hide individual parts of the sub-system. This spectrum of parameterized models enables quick and efficient design of HVAC piping system.

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“…their highly-alloying, complex shape or abnormal dimensions of casted parts. [1,2] Some of these defects (the visual ones) are repaired directly in the foundries with subsequent specified heat treatment of the whole part in furnace (for martensitic steels tempering at temperatures 710 up to 740°C). Moreover, ultrasonic and eddy current NDT is used during visual inspection of every part.…”

Section: Introductionmentioning

confidence: 99%

Application possibilities of the low-temperature repairs on creep-resistance turbine components from material GX23CrMoV12-1

et al. 2018

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Papers deals with the problems of repairs at new and also already loaded components of steam and gas turbines. Generally, it is about welding repairs at valve and turbine chambers, transmitters, vane carriers, tripping valve body and so on. There are both technological defects caused by casting (e.g. shrinkage cavities, misruns, porosity and cracks) and defects caused by operation (thermal-stress fatigue, incorrect method of operation, etc.). Many of the mentioned defects take effect not until the final technological method - mostly at machining. However, in this production phase it is not possible to get form the supplier new production elements due to economical and also delivery time reasons. All of that results in delay of production and penalty. As the major aim of this paper, there was to find such repairs techniques which can ensure serviceability of mentioned devices under the standard regime. In these cases is needed to use much lower tempering temperature than under the standard production, mainly because of necessity to eliminate deformation caused by heating of part that is not possible to be subsequently removed by machining.

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Evaluation of Degradation of Heat Stressed Pipelines

Cited by 9 publications

References 4 publications

Example of using complex system approach methodology by degradation of selected technical object

Example of using complex system approach methodology by degradation of selected technical object

Parameterized Sub-systems of HVAC Piping System

Application possibilities of the low-temperature repairs on creep-resistance turbine components from material GX23CrMoV12-1

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