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Rosén, Bengt GöranORCID iD iconorcid.org/0000-0001-8058-1252
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Publications (10 of 130) Show all publications
Flys, O., Jarlemark, P., Petronis, S., Patrik, S. & Rosén, B. G. (2018). Applicability of characterization techniques on fine scale surfaces. Surface Topography: Metrology and Properties, 6(3), Article ID 034015.
Open this publication in new window or tab >>Applicability of characterization techniques on fine scale surfaces
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2018 (English)In: Surface Topography: Metrology and Properties, ISSN 2051-672X, Vol. 6, no 3, article id 034015Article in journal (Refereed) Published
Abstract [en]

In this study, several surface topographies typical for dental implants were evaluated by different measurement techniques. The samples were prepared by machine turning, wet chemical etching and electrochemical polishing of titanium discs. The measurement techniques included an atomic force microscope (AFM), coherence scanning interferometer (CSI) and a 3D stereo scanning electron microscope (SEM). The aim was to demonstrate and discuss similarities and differences in the results provided by these techniques when analyzing submicron surface topographies. The estimated surface roughness parameters were not directly comparable since the techniques had different surface spatial wavelength band limits. However, the comparison was made possible by applying a 2D power spectral density (PSD) function. Furthermore, to simplify the comparison, all measurements were characterized using the ISO 25178 standard parameters. Additionally, a Fourier transform was applied to calculate the instrument transfer function in order to investigate the behavior of CSI at different wavelength ranges. The study showed that 3D stereo SEM results agreed well with AFM measurements for the studied surfaces. Analyzed surface parameter values were in general higher when measured by CSI in comparison to both AFM and 3D stereo SEM results. In addition, the PSD analysis showed a higher power spectrum density in the lower frequency range 10−2–10−1 µm−1 for the CSI compared with the other techniques. © 2018 IOP Publishing Ltd

Place, publisher, year, edition, pages
Bistol: Institute of Physics Publishing Ltd., 2018
Keywords
surface roughness, PSD, AFM, CSI
National Category
Manufacturing, Surface and Joining Technology
Identifiers
urn:nbn:se:hh:diva-37956 (URN)10.1088/2051-672X/aacf5e (DOI)000440081900002 ()
Available from: 2018-09-12 Created: 2018-09-12 Last updated: 2018-09-13Bibliographically approved
Rebeggiani, S., Wagner, M., Mazal, J., Rosén, B. G. & Dahlén, M. (2018). Detection of paint polishing defects. Paper presented at Met and Props 2017, Gothenburg, Sweden, 27-29 June, 2017. Surface Topography: Metrology and Properties, 6(2), Article ID 024009.
Open this publication in new window or tab >>Detection of paint polishing defects
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2018 (English)In: Surface Topography: Metrology and Properties, ISSN 2051-672X, Vol. 6, no 2, article id 024009Article in journal (Refereed) Published
Abstract [en]

Surface finish plays a major role on perceived product quality, and is the first thing a potential buyer sees. Today end-of-line repairs of the body of cars and trucks are inevitably to secure required surface quality. Defects that occur in the paint shop, like dust particles, are eliminated by manual sanding/polishing which lead to other types of defects when the last polishing step is not performed correctly or not fully completed. One of those defects is known as 'polishing roses' or holograms, which are incredibly hard to detect in artificial light but are clearly visible in sunlight.

This paper will present the first tests with a measurement set-up newly developed to measure and analyse polishing roses. The results showed good correlations to human visual evaluations where repaired panels were estimated based on the defects' intensity, severity and viewing angle.

Place, publisher, year, edition, pages
Bristol: IOP Publishing Ltd, 2018
Keywords
Metrology, coating, polishing, surface finish, surface estimation
National Category
Other Mechanical Engineering
Identifiers
urn:nbn:se:hh:diva-37400 (URN)10.1088/2051-672X/aabfb5 (DOI)000432868700002 ()
Conference
Met and Props 2017, Gothenburg, Sweden, 27-29 June, 2017
Projects
Robust Polering
Funder
VINNOVA, 2015-06889
Available from: 2018-06-29 Created: 2018-06-29 Last updated: 2018-06-29Bibliographically approved
Dimkovski, Z., Lööf, P.-J., Rosén, B. G. & Nilsson, P. (2018). Functional parameter screening for predicting durability of rolling sliding contacts with different surface finishes. Surface Topography: Metrology and Properties, 6(2), Article ID 024005.
Open this publication in new window or tab >>Functional parameter screening for predicting durability of rolling sliding contacts with different surface finishes
2018 (English)In: Surface Topography: Metrology and Properties, ISSN 2051-672X, Vol. 6, no 2, article id 024005Article in journal (Refereed) Published
Abstract [en]

The reliability and lifetime of machine elements such as gears and rolling bearings depend on their wear and fatigue resistance. In order to screen the wear and surface damage, three finishing processes: (i) brushing, (ii) manganese phosphating and (iii) shot peening were applied on three disc pairs and long-term tested on a twin-disc tribometer. In this paper, the elastic contact of the disc surfaces (measured after only few revolutions) was simulated and a number of functional and roughness parameters were correlated. The functional parameters consisted of subsurface stresses at different depths and a new parameter called 'pressure spikes' factor'. The new parameter is derived from the pressure distribution and takes into account the proximity and magnitude of the pressure spikes. Strong correlations were found among the pressure spikes' factor and surface peak/height parameters. The orthogonal shear stresses and Von Mises stresses at the shallowest depths under the surface have shown the highest correlations but no good correlations were found when the statistics of the whole stress fields was analyzed. The use of the new parameter offers a fast way to screen the durability of the contacting surfaces operating at similar conditions. © 2018 IOP Publishing Ltd.

Place, publisher, year, edition, pages
Bristol: Institute of Physics Publishing (IOPP), 2018
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Identifiers
urn:nbn:se:hh:diva-37817 (URN)10.1088/2051-672X/aabd71 (DOI)000431455700001 ()2-s2.0-85051420390 (Scopus ID)
Funder
VINNOVA
Available from: 2018-08-29 Created: 2018-08-29 Last updated: 2018-08-29Bibliographically approved
Vedantha Krishna, A., Flys, O., Reddy, V. V., Leicht, A., Hammar, L. & Rosén, B. G. (2018). Potential approach towards effective topography characterization of 316L stainless steel components produced by selective laser melting process. In: : . Paper presented at Euspen’s 18th International Conference & Exhibition, Venice, Italy, 4th-8th June, 2018.
Open this publication in new window or tab >>Potential approach towards effective topography characterization of 316L stainless steel components produced by selective laser melting process
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2018 (English)Conference paper, Poster (with or without abstract) (Refereed)
Abstract [en]

In this paper, an attempt is made to explain the surface texture of Selective Laser Melting (SLM) parts more satisfyingly than the existing methods. Investigations were carried out on the 316L stainless steel SLM samples. To account for most of the surface conditions, a truncheon artefact was employed for the analysis. A Stylus Profilometer was employed as a metrology tool for obtaining the 3D surface measurements. A methodology is proposed to extract and characterize the topographic features of Additive Manufactured (AM) surfaces. Here, the overall roughness of the surface is segregated into the roughness of the powder particles and the waviness due to thermal and the “staircase” effects. Analyzing these features individually results in an increased understanding of the AM process and an opportunity to optimize machine settings.

Keywords
Surface Metrology, Selective Laser Melting, Profilometer, Areal Surface Parameters, Feature-based characterization
National Category
Materials Engineering
Identifiers
urn:nbn:se:hh:diva-38126 (URN)2-s2.0-85054549685 (Scopus ID)
Conference
Euspen’s 18th International Conference & Exhibition, Venice, Italy, 4th-8th June, 2018
Available from: 2018-10-09 Created: 2018-10-09 Last updated: 2018-10-26
Reddy, V. V., Flys, O., Chaparala, A., Berrimi, C. E., Vedantha Krishna, A. & Rosén, B. G. (Eds.). (2018). Study on surface texture of Fused Deposition Modeling. Paper presented at 8th Swedish Production Symposium, SPS 2018, 16-18 May 2018, Stockholm, Sweden. PROCEDIA MANUFACTURING ELSEVIER
Open this publication in new window or tab >>Study on surface texture of Fused Deposition Modeling
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2018 (English)Conference proceedings (editor) (Refereed)
Abstract [en]

Fused Deposition Modeling (FDM) is mostly used to develop functional prototypes and in some applications for end-use parts. It is important to study the surfaces produced by FDM to understand the certainty of process. Truncheon design test artefacts are printed at different print settings and surfaces are measured using stylus profilometer. Taguchi’s design of experiments, signal-to-noise ratio and multiple regression statistics are implemented to establish a concise study of the individual and combined effect of process variables on surface texture parameters. Further, a model is developed to predict the roughness parameters and is compared with experimental values. The results suggest significant roughness parameter values decrease with increase in build inclination and increases with increase in layer thickness except the roughness peak count.

Place, publisher, year, edition, pages
PROCEDIA MANUFACTURING ELSEVIER, 2018. p. 8
Keywords
Additive manufacturing, Fused Deposition Modeling, Surface texture parameters, Surface roughness
National Category
Engineering and Technology
Identifiers
urn:nbn:se:hh:diva-38122 (URN)10.1016/j.promfg.2018.06.108 (DOI)
Conference
8th Swedish Production Symposium, SPS 2018, 16-18 May 2018, Stockholm, Sweden
Funder
VINNOVAKnowledge Foundation
Available from: 2018-10-09 Created: 2018-10-09 Last updated: 2018-10-09
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, p. 1-17, article id 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
Keywords
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
Rosén, B. G. & Barth, H. (2017). FabLab Halmstad – a hub and pilot plant for academia. In: : . Paper presented at 2nd International RGCS Symposium, “Coworkers, Makers & Hackers: True Opportunities to Renew Work Practices and Entrepreneurship?”, 18th and 19th December 2018 - London (UK).
Open this publication in new window or tab >>FabLab Halmstad – a hub and pilot plant for academia
2017 (English)Conference paper, Oral presentation only (Refereed)
Keywords
co-creation, 3D printing
National Category
Mechanical Engineering
Identifiers
urn:nbn:se:hh:diva-36228 (URN)
Conference
2nd International RGCS Symposium, “Coworkers, Makers & Hackers: True Opportunities to Renew Work Practices and Entrepreneurship?”, 18th and 19th December 2018 - London (UK)
Available from: 2018-02-06 Created: 2018-02-06 Last updated: 2018-02-14Bibliographically 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, p. 75-76Conference paper, Oral presentation with published abstract (Refereed)
Keywords
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, p. 185-186Conference paper, Oral presentation with published abstract (Refereed)
Keywords
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, p. 62-64Conference paper, Oral presentation with published abstract (Refereed)
Keywords
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
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0001-8058-1252

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