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Godło Polski: orzeł w złotej koronie, ze złotymi szponami i dziobem, zwrócony w prawo logo-signet of the Maritime University of Technology in Szczecin - griffin head, anchor elements and PM mark Maritime University of Szczecin

Unia Europejska

Department of Naval Architecture and Shipbuilding Tadeusz Graczyk

Title: Assessment of Technological Usefulness of Panel Production Line in Shipbuilding Process

Author/Authors: Urbański T., Graczyk T., Taraska M., Iwańkowicz R.

Place of publication: Polish Maritime Research

Year: 2018

Keywords: FCAW, GMAW-tandem, panel production line, SAW, SAW-tandem, ship hull, welding technology

Abstract: This paper presents assessment of technological usefulness of panel production line in prefabrication process of large ship hull sections, in which special attention is paid to producibility of welding operations. Basing on the assessment these authors worked out hierarchy of analyzed sequences of welding technological processes as well as production line stands used for the processes. The assessment was performed on the basis of analysis of a concept of panel production line based on real production lines functioning in shipbuilding industry, as well as technical documentation of typical hull sections of a multi-purpose ferry. The presented analysis took into account impact of technological - constructional parameters onto producibility of welding process of prefabricated sections. Among these parameters the following were numbered: mass of the sections and number of their elements, total length of welds, labour consumption, material consumption as well as linear heat input in welding operations. On the basis of the achieved results, places which worsen effectiveness of production line operation were identified, as a result it was possible to formulate proposals for modernization of flow prefabrication line for hull sections.

Website address (link) to the full text
of the publication: https://sciendo.com/article/10.2478/pomr-2018-0034

 

DOI: 10.2478/pomr-2018-0034

Title: Review of Assembly Sequence Planning Methods in Terms of Their Applicability in Shipbuilding Processes

Author/Authors: Taraska M., Iwańkowicz R., Urbański T., Graczyk T.

Place of publication: Polish Maritime Research

Year: 2018

Keywords: assembly sequence planning, method review, ship hull, shipyard, welded structure

Abstract: The article characterises the sea-going vessel hull assembly processes and then reviews the existing assembly methods of mechanisms and welded ship structures. Classification of these methods is done with respect to selected criteria of their applicability to hull assembly. Selected methods are used for calculations performed on a model structure and exemplary database. The analysed aspects include the performance of calculation algorithms and the quality of the obtained solutions. Particular attention is paid to the need for reduction of experts’ participation in the planning process due to strong search space explosion effect. The performed analyses have enabled the authors to formulate assumptions for models which would be applicable in real assembly planning in shipyards, as well as to indicate areas of further research which would make it possible to better consider the specificity of production of large-size welded structures.

Website address (link) to the full text
of the publication: https://sciendo.com/article/10.2478/pomr-2018-0033

 

DOI: 10.2478/pomr-2018-0033

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