| 1. |
- Andersson, Anton, et al.
(författare)
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Design of a Foiling Optimist
- 2018
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Ingår i: Journal of Sailboat Technology. ; 2018, s. 1-24
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Tidskriftsartikel (refereegranskat)abstract
- Because of the successful application of hydrofoils on the America's Cup catamarans in the past two campaigns the interest in foiling sailing craft has boosted. Foils have been fitted to a large number of yachts with great success, ranging from dinghies to ocean racers. An interesting question is whether one of the slowest racing boats in the world, the Optimist dinghy, can foil, and if so, at what minimum wind speed. The present paper presents a comprehensive design campaign to answer the two questions. The campaign includes a newly developed Velocity Prediction Program (VPP) for foiling/non-foiling conditions, a wind tunnel test of sail aerodynamics, a towing tank test of hull hydrodynamics and a large number of numerical predictions of foil characteristics. An optimum foil configuration is developed and towing tank tested with satisfactory results. The final proof of the concept is a successful on the water test with stable foiling at a speed of 12 knots.
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| 2. |
- Frisk, Karin, et al.
(författare)
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Characterisation of EBM-built shelled samples of Ti6Al4V compacted by HIP
- 2016
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Ingår i: World PM 2016 Congress and Exhibition. - : European Powder Metallurgy Association (EPMA). - 9781899072484
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Konferensbidrag (refereegranskat)abstract
- Compaction of additively manufactured Ti6Al4V components by Hot Isostatic Pressing (HIP) is often applied to eliminate porosity, producing fully dense material. In the present work shelled samples produced by Electron Beam Melting with the Arcam process (EBM) were compacted by HIP to produce fully dense samples. Cylindrical samples were studied. The walls of the cylinders were built with EBM, and the powder from the process was left uncompacted inside the cylinders. Samples with different wall thicknesses were produced. The samples were thereafter subjected to a HIP compaction. The critical wall thicknesses needed for compaction were evaluated, and the microstructures characterized. The results show that fully dense samples, with very fine microstructures, are possible.
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| 3. |
- Gadde, Lars-Erik, 1945, et al.
(författare)
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Developments on the supply side of companies
- 2004
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Ingår i: In Håkansson, H., Harrison, D. and Waluszewski, A. (eds.) Rethinking marketing: developing a new understanding of markets, John Wiley & Sons Inc., Chichester. ; , s. 161-186
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 4. |
- Gadde, Lars-Erik, 1945, et al.
(författare)
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Logistic Networks in the New Economy
- 2001
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Ingår i: Paper presented at NOFOMA, University of Iceland, Reykjavik, June 14-15.
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)
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| 5. |
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| 6. |
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| 7. |
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| 8. |
- Huuva, Ivan, et al.
(författare)
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Measurements of forest biomass change using L- and P-band SAR backscatter
- 2017
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Ingår i: International Geoscience and Remote Sensing Symposium (IGARSS). - 9781509049516 ; 2017-July, s. 5818-5821, s. 5818-5821
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Konferensbidrag (refereegranskat)abstract
- Three-year forest above-ground biomass change were measured using L- and P-band Synthetic Aperture Radar (SAR) backscatter. The SAR data were collected in the airborne BioSAR 2007 and BioSAR 2010 campaigns over the hemiboreal Remningstorp test site in southern Sweden. Regression models for biomass were developed using reference biomass maps created using airborne laser scanning data and field measurements. The results from regression analysis show that using HV backscatter (or VH) in a model with above-ground biomass and backscatter change on either natural logarithmic or square root, and decibel scale, respectively, explained most of the variation in the biomass change, both for L- and P-band. In the case of L-band, the two best cases showed R2 values of 66%, when comparing two SAR images acquired 2007 and 2010. For P-band using the same models, the best cases showed R2 values of 62%. In summary, the results look promising using L- and P-band backscattering for mapping biomass change.
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| 9. |
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| 10. |
- Österlund, Lars, 1967, et al.
(författare)
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Model studies of NOx storage
- 1999
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Ingår i: 8th European Conference on Applications of Surface and Interface Analysis (ECASIA’99) in Sevilla, Spain, October, 4-8, 1999.
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Konferensbidrag (refereegranskat)
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