Effects of Design Automation on the Lead Time of the Water-tube Boiler Pressure Spare Part Process
Helin, Atte (2020)
2020
Konetekniikan DI-ohjelma - Master's Programme in Mechanical Engineering
Tekniikan ja luonnontieteiden tiedekunta - Faculty of Engineering and Natural Sciences
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Hyväksymispäivämäärä
2020-11-16
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tuni-202011097872
https://urn.fi/URN:NBN:fi:tuni-202011097872
Tiivistelmä
In industrial design offices, a considerable share of hours is spent on designing already existing and proven solutions. Design hours spent on these solutions can be considerably decreased with the use of design automation.
Design automation was widely used, but for pressure spare part process, a design automation benefit analysis had not been performed. Therefore, the objective of this thesis was to study the lead time effects of design automation in water-tube boiler pressure spare part process. In the first part of the thesis, a literature review was carried out on process development and design automation. After the literature review, the research methodology of the research was defined. Lastly, prior to the research part, a review on water-tube boilers was conducted.
In the research part of the thesis, a case study on the lead time effects of a design automation system on the simplest pressure spare parts, tube bends, was performed. The first part of the case study was gathering the design knowledge required in the process. After the design knowledge had been gathered, an analysis on the current process was performed. The analysis included gathering of other required data and the mapping of the current process by using a swimlane diagram. After the process analysis, the design automation system was created. When the design automation system was verified functional, the process was redefined to include the design automation system. When the redefinition had been done, the process was piloted. The piloting was done on 5 randomly selected projects in simulated circumstances.
Based on the piloted projects, the redefinition of the process and the creation of the design automation decreased the lead time of the process by an average of 47 % in simulated circumstances. For the drawing creation process, the design automation system decreased the lead time by 77 %. These results can be considered guiding for other pressure spare parts.
Design automation was widely used, but for pressure spare part process, a design automation benefit analysis had not been performed. Therefore, the objective of this thesis was to study the lead time effects of design automation in water-tube boiler pressure spare part process. In the first part of the thesis, a literature review was carried out on process development and design automation. After the literature review, the research methodology of the research was defined. Lastly, prior to the research part, a review on water-tube boilers was conducted.
In the research part of the thesis, a case study on the lead time effects of a design automation system on the simplest pressure spare parts, tube bends, was performed. The first part of the case study was gathering the design knowledge required in the process. After the design knowledge had been gathered, an analysis on the current process was performed. The analysis included gathering of other required data and the mapping of the current process by using a swimlane diagram. After the process analysis, the design automation system was created. When the design automation system was verified functional, the process was redefined to include the design automation system. When the redefinition had been done, the process was piloted. The piloting was done on 5 randomly selected projects in simulated circumstances.
Based on the piloted projects, the redefinition of the process and the creation of the design automation decreased the lead time of the process by an average of 47 % in simulated circumstances. For the drawing creation process, the design automation system decreased the lead time by 77 %. These results can be considered guiding for other pressure spare parts.