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Projects / Programmes source: ARIS

Production systems, laser technologies and materials welding

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Periods
January 1, 2009 - December 31, 2014
Research activity

Code Science Field Subfield
2.10.00  Engineering sciences and technologies  Manufacturing technologies and systems   

Code Science Field
T165  Technological sciences  Laser technology 
T130  Technological sciences  Production technology 
T125  Technological sciences  Automation, robotics, control engineering 

Code Science Field
2.11  Engineering and Technology  Other engineering and technologies 
Keywords
Production systems, Surface integrity, Laser engineering, Laser technology, Mechatronics, Welding technologies, Optodynamics, Non-destructive testing of materials, Heat treatment, Surface refinement, Weldability, Adaptable distributed production systems, Simultaneous engineering, Production planning, Production management
Evaluation (rules)
source: COBISS
Evaluation of bibliographic research performance indicators according to ARIS methodology
Citations Citations for bibliographic records in COBIB.SI that are linked to records in citation databases
source: WoS source: Scopus source: COBISS
Researchers (71)
no. Code Name and surname Research area Role Period No. of publications
1.  32091  PhD Vid Agrež  Technology driven physics  Researcher  2009 - 2014  80 
2.  11905  PhD Aleš Babnik  Manufacturing technologies and systems  Researcher  2009 - 2014  101 
3.  35329  Boris Bell    Technical associate  2013 - 2014  39 
4.  26556  PhD Zoran Bergant  Manufacturing technologies and systems  Researcher  2009 - 2014  104 
5.  20863  PhD Tomaž Berlec  Manufacturing technologies and systems  Researcher  2009 - 2014  343 
6.  28703  Aleš Bizjak  Manufacturing technologies and systems  Junior researcher in economics  2009 - 2011  13 
7.  18327  PhD Drago Bračun  Manufacturing technologies and systems  Researcher  2009 - 2014  235 
8.  06765  PhD Peter Butala  Manufacturing technologies and systems  Researcher  2009 - 2014  576 
9.  04107  PhD Janez Diaci  Manufacturing technologies and systems  Researcher  2009 - 2014  363 
10.  23009  PhD Aleš Gorkič  Manufacturing technologies and systems  Researcher  2009 - 2010  43 
11.  10157  PhD Ladislav Grad  Manufacturing technologies and systems  Researcher  2009 - 2014  82 
12.  29224  PhD Peter Gregorčič  Manufacturing technologies and systems  Researcher  2009 - 2014  259 
13.  08994  PhD Bojan Grošelj  Manufacturing technologies and systems  Researcher  2011  73 
14.  36255  Dušanka Grubor Železnik    Technical associate  2013 - 2014  0 
15.  25465  PhD Valter Gruden  Manufacturing technologies and systems  Junior researcher  2009 - 2010  7 
16.  03551  PhD Janez Grum  Manufacturing technologies and systems  Head  2009 - 2014  2,269 
17.  05567  PhD Gorazd Hlebanja  Manufacturing technologies and systems  Researcher  2009 - 2012  124 
18.  14440  PhD Andrej Horvat  Manufacturing technologies and systems  Researcher  2009 - 2013  12 
19.  10926  PhD Darja Horvat  Manufacturing technologies and systems  Researcher  2009 - 2014  63 
20.  11228  PhD Rok Hrovatin  Metrology  Researcher  2009 - 2012  47 
21.  05637  PhD Marjan Jenko  Electronic components and technologies  Researcher  2009 - 2014  156 
22.  21238  PhD Matija Jezeršek  Manufacturing technologies and systems  Researcher  2009 - 2014  364 
23.  18577  Miran Jovanovič    Technical associate  2009  6 
24.  18703  Tatjana Jovič    Technical associate  2009 - 2012  0 
25.  18576  Alojz Kapler    Technical associate  2009 - 2013  7 
26.  18701  Marko Karlovšek    Technical associate  2009 - 2012  1 
27.  18048  Tadeja Kavčič    Technical associate  2009 - 2014  30 
28.  23778  PhD Tomaž Kek  Manufacturing technologies and systems  Researcher  2009 - 2014  156 
29.  20441  PhD Damjan Klobčar  Mechanical design  Researcher  2009 - 2014  553 
30.  18702  Vane Kralj    Technical associate  2009 - 2014  0 
31.  05571  PhD Janez Kušar  Manufacturing technologies and systems  Researcher  2009 - 2014  622 
32.  37440  PhD Jernej Laloš  Computer science and informatics  Junior researcher  2014  28 
33.  01649  PhD Janez Možina  Manufacturing technologies and systems  Researcher  2009 - 2014  640 
34.  27637  PhD Mitja Muhič  Mechanical design  Junior researcher in economics  2009 - 2011  142 
35.  32338  PhD Vid Novak  Computer intensive methods and applications  Researcher  2014  13 
36.  34413  PhD Urban Pavlovčič  Computer science and informatics  Junior researcher  2011 - 2014  51 
37.  18160  PhD Boštjan Pečnik  Manufacturing technologies and systems  Researcher  2009 - 2013  42 
38.  27638  Boštjan Perdan  Manufacturing technologies and systems  Junior researcher in economics  2009 - 2010  24 
39.  27660  PhD Tadej Perhavec  Manufacturing technologies and systems  Junior researcher in economics  2009 - 2010  23 
40.  36404  PhD Luca Petan  Manufacturing technologies and systems  Junior researcher  2013 - 2014  12 
41.  15646  PhD Rok Petkovšek  Manufacturing technologies and systems  Researcher  2009 - 2014  265 
42.  18573  Albert Pisek    Technical associate  2009 - 2013  3 
43.  28609  PhD Matej Pleterski  Materials science and technology  Researcher  2009 - 2013  69 
44.  17059  PhD Primož Podržaj  Systems and cybernetics  Researcher  2009 - 2014  195 
45.  02861  PhD Ivan Polajnar  Mechanical design  Researcher  2009 - 2012  418 
46.  33242  PhD Primož Poredoš  Energy engineering  Junior researcher  2010 - 2014  86 
47.  33892  PhD Klemen Povšič  Systems and cybernetics  Technical associate  2012 - 2014  19 
48.  25463  PhD Tomaž Požar  Manufacturing technologies and systems  Researcher  2009 - 2014  143 
49.  35397  PhD Jaka Pribošek  Manufacturing technologies and systems  Junior researcher  2012 - 2014  17 
50.  32078  PhD Dunja Ravnikar  Manufacturing technologies and systems  Researcher  2009 - 2014  20 
51.  18874  Braco Regojević    Technical associate  2009 - 2014  2 
52.  26144  PhD Lidija Rihar  Manufacturing technologies and systems  Technical associate  2009 - 2014  162 
53.  32082  PhD Luka Selak  Manufacturing technologies and systems  Researcher  2009 - 2014  50 
54.  31562  PhD Samo Simončič  Systems and cybernetics  Researcher  2013 - 2014  31 
55.  34420  PhD Andrej Skumavc  Materials science and technology  Junior researcher  2011 - 2014  35 
56.  00799  PhD Alojzij Sluga  Manufacturing technologies and systems  Researcher  2009 - 2014  509 
57.  05210  PhD Marko Starbek  Manufacturing technologies and systems  Researcher  2009 - 2014  761 
58.  18873  Matevž Steržaj    Technical associate  2009 - 2014  0 
59.  13026  PhD Roman Šturm  Manufacturing technologies and systems  Researcher  2009 - 2014  325 
60.  28906  PhD Uroš Trdan  Manufacturing technologies and systems  Researcher  2013 - 2014  133 
61.  02045  PhD Janez Tušek  Mechanical design  Researcher  2009 - 2014  1,113 
62.  12074  PhD Miro Uran  Manufacturing technologies and systems  Researcher  2009 - 2014  136 
63.  30914  PhD Rok Vrabič  Manufacturing technologies and systems  Researcher  2012 - 2014  242 
64.  35728  Anja Vrhovec    Technical associate  2013 - 2014  0 
65.  10422  PhD Darjo Zuljan  Educational studies  Researcher  2009 - 2013  306 
66.  27630  PhD Uroš Zupanc  Manufacturing technologies and systems  Researcher  2009 - 2014  33 
67.  18588  PhD Martin Zupančič  Manufacturing technologies and systems  Researcher  2009 - 2012  83 
68.  28655  Rok Zupančič  Manufacturing technologies and systems  Junior researcher in economics  2009 - 2011  11 
69.  28828  MSc Urban Žargi  Manufacturing technologies and systems  Junior researcher in economics  2009 - 2014  0 
70.  09067  PhD Pavle Žerovnik  Manufacturing technologies and systems  Researcher  2009 - 2014  223 
71.  10897  PhD Matjaž Žnidaršič  Materials science and technology  Researcher  2009 - 2014  76 
Organisations (2)
no. Code Research organisation City Registration number No. of publications
1.  0209  Welding Institute  Ljubljana  5051398000  1,330 
2.  0782  University of Ljubljana, Faculty of Mechanical Engineering  Ljubljana  1627031  29,244 
Abstract
The research program titled »Production systems, laser technology, and joining of materials« comprises five research groups having separate work programs, i.e.: 1. Optodynamics and laser engineering, 2. Surface integrity and surface hardening and refining, 3. Joining of materials, 4. Computer-aided integration of project management, simultaneous engineering and production controling, 5. Elaboration of new concepts of product development. The first research program titled »Optodynamics and laser technique« comprises two closely related parts. The first part (optodynamics) includes fundamental research of dynamic aspects of the interaction between light and substance. It is focused mainly on the education of young researchers. The second part (laser engineering) includes applied research and development work in the field of laser processing and measuring systems. It is designed as a systematic R&D aid to the introduction of laser technologies in the Slovenian industry. Optodynamics is an original name for a new interdisciplinary field in which a wide number of phenomena, from photoacoustic phenomenon, laser induced shock waves, optical ultrasonics, laser treatment processes to a very extreme case of laser induced nuclear fusion, can be classified. Hereto belong numerous medical laser treatments such as demolition of kidney stones and gallstones, tooth drilling, and treatment of cataract. The focus of the applied program is closely related to the up-to-date development of industrial laser sources and systems of domestic manufacturers and to the introduction of laser technology in other industrial branches. The second research program titled »Surface integrity and surface hardening and alloying« comprises studies on surface integrity after machining processes such as the prediction of a relation between a microstructure and surface-layer quality, the influence of grinding of quenched surfaces on the size and variation of residual stresses, and studies related to various laser treatment processes such as transformation hardening, hardening by remelting, and surface refinement to improve surface resistance under dynamic stresses, i.e. improvement of wear resistance and thermo-chemical resistance of surfaces of the most exacting structural components or tool parts. In surface hardening a special attention will be paid to hardening by cold deformation, e.g. shot peening, and laser shock hardening. Studies of the condition of iron materials and properties of ferromagnetic materials will be based on the magnetic Barkhausen noise whereas studies of defects and imperfections in a material will be based on ultrasonic testing methods. The advancement and testing of a new method of measuring residual internal stresses using the micromagnetic method based on the Barkhausen noise shows good prospects. The method proposed is new and original and requires development of both new sensors and evaluation methods. The third research program titled »Joining« deals with applications of basic knowledge in the fields of development of cored wires made of maraging steel for repair welding of tools, fusion spot welding with a sunken arc, brazing on glass, determination of arc welding efficiency, laser repair welding of tools. Theoretical starting points for a cored wire are studies of a correct chemical composition of a wire made of steel with a low carbon content and higher contents of cobalt, nickel and molybdenum, and the behaviour of the wire with all the elements in the arc. For the second part (fusion spot welding), a theoretical starting point is the Maranghoni effect, which describes the motion of the weld pool under the influence of various chemical elements. A theoretical starting point of brazing is the affinity of individual metals to other metals and non-metallic materials where it is proposed to study a suitable brazing filler material containing titanium, zirconium, hafnium, etc. The investigation of efficiencies and effect
Significance for science
Manufacturing Systems. The results in this field are related to new concepts for structuring manufacturing systems, mastering of complexity in manufacturing, on-line monitoring of work systems (processes, devices, operations, environment), learning and diagnostics based on production data, development of product-service systems, as well as development of 3D measuring systems and their implementation in medicine. A new model of cloud manufacturing system is developed. Effect of social networking in production networks was examined. The results of research on the development of a generic model for integrated planning and control in process organized production are an original contribution while there is no evidence about similar approaches. Optodynamics and laser systems: studied were optodynamic aspects of the interaction of laser pulses with metals, dielectrics, liquids and gases. The results of the research, inter alia, clarify fundamental questions regarding the conversion of light energy into mechanical energy. Such interactions are in fact present in virtually all laser machining processes and medical therapies. An in-depth understanding of these phenomena allows development of new and optimization of existing laser processes. The development of 3D laser measurement systems for measuring the moving bodies has also opened a number of studies in the field of medicine and real-time quality control of products. Laser machining processes, surface finishing and non-destructive testing: The research work incorporated various segments of scientific disciplines, related to the characterisation of material prior to the laser shock peening and after it. The characterisation of the material was supported with a detailed quantitative and qualitative analysis of the effects of laser shock waves. Our results confirmed improved corrosion resistance, with improved repassivation as well as corrosion current reduction after laser peening. Through electrochemical impedance spectroscopy higher polarization resistance after laser shock peening, compared to the untreated specimen. The results were shown to be attributable to the modification of surface oxide form, with a binding energy and to the development of high compressive residual. Moreover, it was found that crystallographic and surface-hemispherical pitting can be reduced and intergranular attack completely prohibited. Systematic investigations of laser shock peening effects on the microstructural evolution, and dislocation configurations induced by ultra-high plastic strains and strain rates revealed exceptional increase in dislocation density with various configurations. The results have confirmed that dense dislocation structures during ultra-high plastic deformation with the addition of shear bands producing ultra-fine and nano-grains. Given the extraordinary significance of the topical theme we expect great interest of the science community for our results, especially for new hybrid techniques of innovative laser surface processes. Joining of materials: The obtained results in the field of research of laser welding, filler materials and filler powders, weldability, welding with an active flux, and on the field of friction stir welding and processing are important for the development of manufacturing science. They present important findings for the world knowledge treasury and are the basis for development of new research directions.
Significance for the country
Manufacturing systems: The generic model of integrated planning and control of process organized production can be used in all Slovenian small and medium-sized enterprises, which production program is based on development of new products that have to come to market in the shortest possible time (50%), with the lowest cost (up to 40%) and minimal changes to the product and process in the industrialization phase of the product (25%). The research of new manufacturing concepts and mastering of complexity in production will have significant influence on the next generation manufacturing systems in Slovenian industry. The concept of product-service systems has been implemented on two turned hydropower plants and turned out to have a potential for industry. On-line monitoring of work systems is implemented in two companies (Litostroj Power, Cimos Buzet). Research on optodynamics and laser systems are also of great importance for Slovenian companies, such as Fotona, LPKF, Optotek, Danfoss, Yaskawa, Alpina, Ydria, Hirdria and RLS measurement technique with whose we have developed innovative systems and products. These solutions help companies maintain a high level of technological development and hence competitiveness in the international environment. The most important developments are: systems for monitoring laser medical interventions, fiber lasers for use in systems for rapid prototyping electronic circuits and photovoltaic elements, adaptive remote laser welding, laser 3D foot gauge, and a system for laser image of the absolute position markings. Laser machining processes, surface finishing and non-destructive testing: Despite the fact, that laser shock peening technology requires high investment, while the process itself is rather complex and the technology is applied to high-precision products, we believe that the results of the research program promise significant contributions to the introduction of new products and new processing technologies into the production. This shall have an important impact on the increase of the competitiveness in the automotive industry with increased endurance of dynamically stressed machine components. Joining of materials: The results of research of laser welding, filler materials and powders, weldability, welding with an active flux, and on the field of friction stir welding and processing are important for the development of Slovenian industry where welding and related technologies represent an important share of value adding processes.
Most important scientific results Annual report 2009, 2010, 2011, 2012, 2013, final report, complete report on dLib.si
Most important socioeconomically and culturally relevant results Annual report 2009, 2010, 2011, 2012, 2013, final report, complete report on dLib.si
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