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Rosén, Bengt GöranORCID iD iconorcid.org/0000-0001-8058-1252
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Publications (10 of 115) Show all publications
Johansson, S., Nilsson, P. H., Ohlsson, R. & Rosén, B. G. (2017). A Novel Approach to Reduction of Frictional Losses in a Heavy-Duty Diesel Engine by Reducing the Hydrodynamic Frictional Losses. Advances in Tribology, 2017, 1-17, Article ID 9240703.
Open this publication in new window or tab >>A Novel Approach to Reduction of Frictional Losses in a Heavy-Duty Diesel Engine by Reducing the Hydrodynamic Frictional Losses
2017 (English)In: Advances in Tribology, ISSN 1687-5915, E-ISSN 1687-5923, Vol. 2017, 1-17 p., 9240703Article in journal (Refereed) Published
Abstract [en]

An important parameter in the reduction of fuel consumption of heavy-duty diesel engines is the Power Cylinder Unit (PCU); the PCU is the single largest contributor to engine frictional losses. Much attention, from both academia and industry, has been paid to reducing the frictional losses of the PCU in the boundary and mixed lubrication regime. However, previous studies have shown that a large portion of frictional losses in the PCU occur in the hydrodynamic lubrication regime. A novel texturing design with large types of surface features was experimentally analyzed using a tribometer setup. The experimental result shows a significant reduction of friction loss for the textured surfaces. Additionally, the textured surface did not exhibit wear. On the contrary, it was shown that the textured surfaces exhibited a smaller amount of abrasive scratches on the plateaus (compared to the reference plateau honed surface) due to entrapment of wear particles within the textures. The decrease in hydrodynamic friction for the textured surfaces relates to the relative increase of oil film thickness within the textures. A tentative example is given which describes a method of decreasing hydrodynamic frictional losses in the full-scale application. © 2017 Staffan Johansson et al.

Place, publisher, year, edition, pages
New York: Hindawi Publishing Corporation, 2017
Keyword
Power Cylinder Unit, Friction, Hydro dynamic losses, Textured, Surfaces, Roughness
National Category
Manufacturing, Surface and Joining Technology
Identifiers
urn:nbn:se:hh:diva-35175 (URN)10.1155/2017/9240703 (DOI)000401705800001 ()2-s2.0-85019564452 (Scopus ID)
Available from: 2017-10-10 Created: 2017-10-10 Last updated: 2017-10-11Bibliographically approved
Dimkovski, Z., Lööf, P.-J., Dumbreville, L., Rosén, B. G. & Nilsson, P. (2017). Functional Parameters Screening for Predicting Wear between Two Cylindrical Surfaces with Different Finishes. In: Mets&Props 2017: 16th International Conference on Metrology and Properties of Engineering Surfaces: Conference abstracts. Paper presented at 16th International Conference on Metrology and Properties of Engineering Surfaces, Gothenburg, Sweden, June 27-29, 2017 (pp. 75-76). .
Open this publication in new window or tab >>Functional Parameters Screening for Predicting Wear between Two Cylindrical Surfaces with Different Finishes
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2017 (English)In: Mets&Props 2017: 16th International Conference on Metrology and Properties of Engineering Surfaces: Conference abstracts, 2017, 75-76 p.Conference paper, Oral presentation with published abstract (Refereed)
Keyword
tribology, rough contact simulations, twin-disc tests
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Identifiers
urn:nbn:se:hh:diva-34985 (URN)
Conference
16th International Conference on Metrology and Properties of Engineering Surfaces, Gothenburg, Sweden, June 27-29, 2017
Available from: 2017-09-15 Created: 2017-09-15 Last updated: 2018-01-13Bibliographically approved
Lööf, P.-J., Dimkovski, Z., Rosén, B. G. & Nilsson, P. (2017). Measuring Technique for Characterization of Micropitting. In: Mets&Props 2017: 16th International Conference on Metrology and Properties of Engineering Surfaces: Conference abstracts. Paper presented at 16th International Conference on Metrology and Properties of Engineering Surfaces, Gothenburg, Sweden, June 27-29, 2017 (pp. 185-186). .
Open this publication in new window or tab >>Measuring Technique for Characterization of Micropitting
2017 (English)In: Mets&Props 2017: 16th International Conference on Metrology and Properties of Engineering Surfaces: Conference abstracts, 2017, 185-186 p.Conference paper, Oral presentation with published abstract (Refereed)
Keyword
surface finish, tribology, micropitting, gearbox tests
National Category
Mechanical Engineering
Identifiers
urn:nbn:se:hh:diva-35000 (URN)
Conference
16th International Conference on Metrology and Properties of Engineering Surfaces, Gothenburg, Sweden, June 27-29, 2017
Available from: 2017-09-18 Created: 2017-09-18 Last updated: 2017-09-22Bibliographically approved
John, S., Cabanettes, F., Etievant, L., Lööf, P.-J., Dimkovski, Z. & Rosén, B. G. (2017). Running in of superfinishing surfaces in lubricated rolling sliding contacts. In: Mets&Props 2017: 16th International Conference on Metrology and Properties of Engineering Surfaces: Conference abstracts. Paper presented at 16th International Conference on Metrology and Properties of Engineering Surfaces, Gothenburg, Sweden, June 27-29, 2017 (pp. 62-64). .
Open this publication in new window or tab >>Running in of superfinishing surfaces in lubricated rolling sliding contacts
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2017 (English)In: Mets&Props 2017: 16th International Conference on Metrology and Properties of Engineering Surfaces: Conference abstracts, 2017, 62-64 p.Conference paper, Oral presentation with published abstract (Refereed)
Keyword
surface topography, tribology, relocation, abrasive wear, local plastic deformations
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Identifiers
urn:nbn:se:hh:diva-34987 (URN)
Conference
16th International Conference on Metrology and Properties of Engineering Surfaces, Gothenburg, Sweden, June 27-29, 2017
Available from: 2017-09-15 Created: 2017-09-15 Last updated: 2018-01-13Bibliographically approved
Reddy, V. V., Tam, P. L., Vedantha Krishna, A. & Rosén, B. G. (2017). Subsurface Characterization of Turned Brass alloys using Backscattered Electron Microscopy. In: Mets&Props 2017: 16th International Conference on Metrology and Properties of Engineering Surfaces: Conference abstracts. Paper presented at 16th International Conference on Metrology and Properties of Engineering Surfaces, Gothenburg, Sweden, June 27-29, 2017 (pp. 14-15). .
Open this publication in new window or tab >>Subsurface Characterization of Turned Brass alloys using Backscattered Electron Microscopy
2017 (English)In: Mets&Props 2017: 16th International Conference on Metrology and Properties of Engineering Surfaces: Conference abstracts, 2017, 14-15 p.Conference paper, Oral presentation with published abstract (Refereed)
Keyword
Surface Integrity, Subsurface deformation, Grain analysis, Grain Orientation, Scanning Electron Microscope
National Category
Materials Engineering
Identifiers
urn:nbn:se:hh:diva-35174 (URN)
Conference
16th International Conference on Metrology and Properties of Engineering Surfaces, Gothenburg, Sweden, June 27-29, 2017
Projects
Lead free Brass
Funder
Mistra - The Swedish Foundation for Strategic Environmental Research
Available from: 2017-10-10 Created: 2017-10-10 Last updated: 2017-10-27Bibliographically approved
Reddy, V. V., Vedantha Krishna, A., Schultheiss, F. & Rosén, B. G. (2017). Surface topography characterization of brass alloys: lead brass (CuZn39Pb3) and lead free brass (CuZn21Si3P). Surface Topography: Metrology and Properties, 5(2), Article ID 025001.
Open this publication in new window or tab >>Surface topography characterization of brass alloys: lead brass (CuZn39Pb3) and lead free brass (CuZn21Si3P)
2017 (English)In: Surface Topography: Metrology and Properties, ISSN 2051-672X, Vol. 5, no 2, 025001Article in journal (Refereed) Published
Abstract [en]

Manufactured surfaces usually consist of topographical features which include both those put forth by the manufacturing process, and micro-features caused by disturbances during this process. Surface characterization basically involves study of these features which influence the functionality of the surface. This article focuses on characterization of the surface topography of machined lead brass and lead free brass. The adverse effect of lead on human health and the environment has led the manufacturing sector to focus on sustainable manufacturing of lead free brass, as well as how to maintain control of the surface integrity when substituting the lead content in the brass with silicon. The investigation includes defined areal surface parameters measured on the turned samples of lead- and lead free brass using an optical coherence scanning interferometer, CSI. This paper deals with the study of surface topography of turned samples of lead-and lead free brass. It is important to study the topographical characteristics of the brass samples which are the intermediate link between the manufacturing process variables and the functional behaviour of the surface. To numerically evaluate the sample's surface topography and to validate the measurements for a significant study, a general statistical methodology is implemented. The results indicate higher surface roughness in turned samples of lead brass compared to lead free brass. © 2017 IOP Publishing Ltd

Place, publisher, year, edition, pages
Bristol: Institute of Physics Publishing (IOPP), 2017
Keyword
areal surface parameters, optical interferometer, multiple regression analysis, surface topography, lead free brass, surface roughness
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Identifiers
urn:nbn:se:hh:diva-35600 (URN)10.1088/2051-672X/aa612b (DOI)000398423900001 ()2-s2.0-85020298117 (Scopus ID)
Available from: 2017-12-04 Created: 2017-12-04 Last updated: 2018-01-13Bibliographically approved
Reddy, V. V., Flys, O., Vedantha Krishna, A. & Rosén, B. G. (2017). Topography characterization of fused deposition modeling surfaces. In: : . Paper presented at European society for precision engineering and nanotechnology- Special Interest Group: additive manufacturing. .
Open this publication in new window or tab >>Topography characterization of fused deposition modeling surfaces
2017 (English)Conference paper, Oral presentation with published abstract (Refereed)
Keyword
Additive manufacturing (AM), Fused Deposition Modelling (FDM), Surface Topography, Areal surface parameters, Power Spectral Density (PSD)
National Category
Materials Engineering
Identifiers
urn:nbn:se:hh:diva-35176 (URN)
Conference
European society for precision engineering and nanotechnology- Special Interest Group: additive manufacturing
Available from: 2017-10-10 Created: 2017-10-10 Last updated: 2017-10-27
Reddy, V. V., Vedantha Krishna, A., Schultheiss, F. & Rosén, B. G. (2016). Lead free Brass: Topography Characterization. In: : . Paper presented at 7th Swedish Production Symposium, Lund, Sweden, October 25th-27th, 2016. .
Open this publication in new window or tab >>Lead free Brass: Topography Characterization
2016 (English)Conference paper, Oral presentation only (Refereed)
Abstract [en]

The negative effects of lead on human health and the recycling problems of copper alloys with lead content has led to the increase in concern for reducing/eliminating the use of lead in brass and other copper alloys. Many materials are considered to replace lead in brass; silicon is one such alternative. The real challenge prevails in sustainable manufacturing of lead free brass, to maintain control of the surface integrity when substituting the lead content in the brass with silicon. The investigation includes defined areal surface parameters measured on the turned samples of lead- and lead free brass using an optical coherence scanning interferometer, CSI.This paper deals with the study of surface topography of turned samples of lead and lead free brass. It is important to study the topographical characteristics of the brass samples which are the intermediate link between the manufacturing process variables and the functional behaviour of the surface. To numerically evaluate the sample’s surface topography and to validate the measurements for a significant study, a general statistical methodology is implemented. The results suggest that the surface roughness is higher in lead brass compared to lead free brass and tool coatings have significant influence on the hybrid (Sdr & Sdq) parameters in the surface topography of brass samples.

Keyword
Lead free Brass, Surface Topography, Areal Surface Parameters, Mountains Map, Regression Analysis, Optical Interferometer
National Category
Materials Engineering Mechanical Engineering
Identifiers
urn:nbn:se:hh:diva-32715 (URN)
Conference
7th Swedish Production Symposium, Lund, Sweden, October 25th-27th, 2016
Projects
Lead free Copper alloys
Funder
Mistra - The Swedish Foundation for Strategic Environmental Research
Note

Funding: MISTRA, The Swedish Foundation for Strategic Environmental Research, as well as the Swedish Strategic Innovation Area, SIO: Produktion2030.

Available from: 2016-12-15 Created: 2016-12-15 Last updated: 2017-10-27Bibliographically approved
Flys, O., Källberg, S., Ged, G., Silvestri, Z. & Rosén, B.-G. (2015). Characterization of surface topography of a newly developed metrological gloss scale. Surface Topography: Metrology and Properties, 3(4), Article ID 045001.
Open this publication in new window or tab >>Characterization of surface topography of a newly developed metrological gloss scale
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2015 (English)In: Surface Topography: Metrology and Properties, ISSN 2051-672X, Vol. 3, no 4, 045001Article in journal (Refereed) Published
Abstract [en]

In the European Joint Research Project 'Multidimensional Reflectometry for Industry', a new gloss scale was developed with the aim to represent different levels of gloss, hue, roughness, and refractive indices. In this paper, the surfaces of six selected samples were thoroughly investigated using various measuring techniques in order to verify the outcome of the novel manufacturing processes in terms of distinct levels as well as types of surface roughness. The aim of the evaluation was to capture surface structures in different wavelength intervals utilizing a confocal microscope, a coherence scanning interferometer, and an atomic force microscope. Power spectral density functions were also calculated from the measurements and used to determine suitability of techniques for different roughness scales. The measurements show that the expected surface characteristics as well as different RMS roughness values are intimately connected to the perceived glossiness.

Place, publisher, year, edition, pages
Bristol: Institute of Physics (IOP), 2015
Keyword
surface topography, gloss, PSD
National Category
Engineering and Technology Electrical Engineering, Electronic Engineering, Information Engineering Production Engineering, Human Work Science and Ergonomics Nano Technology
Identifiers
urn:nbn:se:hh:diva-30116 (URN)10.1088/2051-672X/3/4/045001 (DOI)000364386300009 ()2-s2.0-84979198389 (Scopus ID)
Funder
EU, European Research Council
Note

This work was partially funded by the European Metrological Research Program (EMRP). The EMRP is jointly funded by the EMRP-participating countries with EURAMET and the European Union.

Available from: 2015-12-29 Created: 2015-12-29 Last updated: 2016-11-24Bibliographically approved
Dimkovski, Z., Guilbert, F., Lundmark, J., Mohlin, J. & Rosén, B.-G. (2015). Optimization of the Triboconditioning Process on External Cylindrical Surfaces. In: Proceedings of the 15th International Conference on Metrology and Properties of Engineering Surfaces: . Paper presented at 15th International Conference on Metrology and Properties of Engineering Surfaces, University of North Carolina at Charlotte, Charlotte, North Carolina, USA, March 2-5, 2015. Raleigh, NC: American Society for Precision Engineering (ASPE).
Open this publication in new window or tab >>Optimization of the Triboconditioning Process on External Cylindrical Surfaces
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2015 (English)In: Proceedings of the 15th International Conference on Metrology and Properties of Engineering Surfaces, Raleigh, NC: American Society for Precision Engineering (ASPE) , 2015Conference paper, Published paper (Refereed)
Abstract [en]

The use of tungsten disulfide in tribofilms on functional surfaces has been a proven way to reduce the frictional losses in rolling and sliding contacts, especially in lubricated contacts at boundary and mixed regime. A suitable and cost-effective process to deposit tungsten disulfide is by ANS Triboconditioning, the mechano-chemical surface finishing process for improving the tribological properties of mechanical components made of steel or cast iron. However, it is not known what are the optimal process parameters, speeds and pressures, to achieve an optimal surface treatment. In this paper, the modifications of the work-piece surfaces under Triboconditioning have been tracked to optimize the process parameters. To closely control the conditions, a commercial tribometer with a block-on-ring configuration was used. Cylindrical tungsten carbide samples (representing the tool) were rubbed against steel rings (representing the work-piece) under two different loads and speeds. The ring surfaces of two different finishes (ground and honed) were measured on the same place before and after treatment to track the surface modifications. At last, the treated rings were rubbed against a flat steel surface in start-stop sequences that resemble pin-roller operating conditions of a truck valve train and the friction behavior was screened. The results show a reduction of the core roughness of the ring surfaces with the lowest friction for the ground rings treated by low load and low speed.

Place, publisher, year, edition, pages
Raleigh, NC: American Society for Precision Engineering (ASPE), 2015
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Identifiers
urn:nbn:se:hh:diva-28333 (URN)
Conference
15th International Conference on Metrology and Properties of Engineering Surfaces, University of North Carolina at Charlotte, Charlotte, North Carolina, USA, March 2-5, 2015
Note

Funding: The Swedish FFI foundation

Available from: 2015-05-26 Created: 2015-05-26 Last updated: 2018-01-11Bibliographically approved
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ORCID iD: ORCID iD iconorcid.org/0000-0001-8058-1252

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