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Träfflista för sökning "LAR1:ltu srt2:(1980-1989);srt2:(1989);hsvcat:2"

Sökning: LAR1:ltu > (1980-1989) > (1989) > Teknik

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Numrering	Referens	Omslagsbild	Hitta
1.	Appelgren, Leif, et al. (författare) Fraktval : program för beslutsstöd vid val av transportmedel 1989 Rapport (övrigt vetenskapligt/konstnärligt)
2.	Axelsson, Kennet B. E., et al. (författare) Institutionen för Anläggningsteknik, Verksamhetsberättelse 1988/89 1989 Rapport (populärvet., debatt m.m.)
3.	Axsäter, Sven (författare) Initial order quantities 1989 Ingår i: Engineering Costs and Production Economics. - 0167-188X .- 1878-4011. ; 15, s. 307-315 Tidskriftsartikel (refereegranskat)abstract The paper shows how optimal lot sizes are determined in an initial transient phase where the needed lead time may not be available in the production of a batch. It is assumed that the sales are lost. The transient problem is due to the finite production rate. A case is also considered when the constant demand starts suddenly and production is not started in advance. It is assumed that backlogging is not allowed
4.	Fällström, Karl-Evert, et al. (författare) Transient bending waves in anisotropic plates studied by hologram interferometry 1989 Ingår i: Experimental mechanics. - 0014-4851 .- 1741-2765. ; 29:4, s. 409-413 Tidskriftsartikel (refereegranskat)abstract Propagating bending waves are studied in plates made of glass-fiber reinforced polyester. The waves are generated by the impact of a ballistic pendulum. Hologram interferometry, with a double pulsed ruby laser as light source, is used to record the out of plane motion of the waves. The interferograms have an elliptic-like symmetry for an orthotropic plate, while the wave pattern for a symmetric angle-ply reinforced plate has a symmetry about the axes of reinforcements. Experimental data are compared on one hand to analytical results obtained by assuming that the orthotropic plate can be described as if isotropic along the main axes, and on the other hand to numerical results from calculations using the finite-element method. The effective Young's modulus raised to power 1/4 is shown to be an important parameter for the description of the dispersive wave pattern. A defect in the plate alters the wave pattern in the interferograms significantly. This may have technical use.
5.	Fällström, Karl-Evert, et al. (författare) Transient bending waves in plates studied by hologram interferometry 1989 Ingår i: Experimental mechanics. - 0014-4851 .- 1741-2765. ; 29:4, s. 378-387 Tidskriftsartikel (refereegranskat)abstract Propagating bending waves are studied in plates made of aluminum and wood. The waves are generated by the impact of a ballistic pendulum. Hologram interferometry, with a double pulsed ruby laser as the light source, is used to record the out of plane motion of the waves. Elliptic-like fringes visualize differences in wave speed for different directions in the anisotropic plate and circular ones are obtained for the isotropic plate. The experimental data for the isotropic plate compare favorably with analytical results derived from the Kirchhoff-plate equation with a point impact of finite duration. A similarity variable is found when starting conditions are modeled as a Dirac pulse in space and time, that brings new understanding to the importance of specific parameters for wave propagation in plates. A formal solution is obtained for a point force with an arbitrary time dependence. For times much larger than the contact time, the plate deflection is shown to be identical to that from a Dirac pulse applied at the mean contact time. A method for determining material parameters, and the mean contact time, from the interferograms is hence developed.
6.	Isaksson, Ove (författare) Measurement of the influence of sliding velocity on oil film thickness in an elastohydrodynamic point contact 1989 Ingår i: Friction, wear, lubrication. - 9529008015 Konferensbidrag (refereegranskat)
7.	Isaksson, Ove (författare) Numerical analysis of grease lubricated elastohydrodynamic contacts using non-newtonian fluid model 1989 Ingår i: Papers pres. at the Nordic Symposium on Tribology. - Lausanne : Elsevier. Konferensbidrag (refereegranskat)
8.	Jonsson, Mikael, et al. (författare) Experimental and numerical analysis of damped transient vibration of beam structures 1989 Ingår i: Proceedings of the International conference on noise and vibration. - Singapore : Nanyang Technological Institute. ; , s. B.53-B.64 Konferensbidrag (refereegranskat)
9.	Josefson, B.L., et al. (författare) Transient and residual stresses in a single-pass butt welded pipe 1989 Ingår i: Residual stresses. - : Elsevier. ; , s. 497-503 Konferensbidrag (refereegranskat)
10.	Karlsson, Lennart, et al. (författare) Residual stresses and deformations in a welded thin-walled pipe 1989 Ingår i: Weld residual stresses and plastic deformation. - New York : American Society of Mechanical Engineers. - 0791803295 Konferensbidrag (refereegranskat)abstract Deformations and stresses during butt-welding of a pipe are calculated as well as the residual deformations and stresses. The temperature field during welding is calculated using an analytical solution. The deformations and stresses are calculated by use of the finite element method. A thermo-elastoplastic material model is used. Special attention is paid to the influence of the volume changes due to phase transformations on the deformations (radial shrinkage) and the residual stresses. The calculated radial shrinkage and residual stresses are compared to experimental values. Good agreement was obtained.

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Typ av publikation: tidskriftsartikel (87); rapport (83); konferensbidrag (64); licentiatavhandling (17); bok (4); doktorsavhandling (4); visa fler...; bokkapitel (4); samlingsverk (redaktörskap) (2); proceedings (redaktörskap) (1); visa färre...

Typ av innehåll: övrigt vetenskapligt/konstnärligt (139); refereegranskat (115); populärvet., debatt m.m. (12)

Författare/redaktör: Forssberg, Eric (21); Shahnavaz, Houshang (10); Wang, Xianghuai (7); Nordell, Bo (7); Kumar, Uday (6); Molin, Nils-Erik (6); visa fler...; Lindgren, Lars-Erik (5); Johansson, Jan (5); Helgeson, Bo (5); Jonsson, Mikael (5); Elfgren, Lennart (5); Knutsson, Sven (4); Abeysekera, John D.A ... (4); Klefsjö, Bengt (4); Axelsson, Kennet (4); Stephansson, Ove (4); Karlsson, Lennart (4); Gustavsson, Håkan (4); Sellgren, Anders (3); Elfgren, Lennart, Se ... (3); Bengtsson, Peter (3); Migdalas, Athanasios (3); Alm, Håkan (3); Gärling, Anita (3); Loberg, Bengt (3); Grönlund, Anders (3); Antti, Britt-Marie (3); Sundin, Karl-Gustaf (3); Johansson, Lars (2); Andersson, Ulf (2); Abrahamsson, Kenneth (2); Gunnarsson, Ewa (2); Ranhagen, Ulf (2); Nilsson, Annika (2); Lagerkvist, Anders (2); Morén, Tom (2); Pålsson, Bertil (2); Ljunggren, Christer (2); Lindahl, Olof (2); Larsson, Torbjörn (2); Wåhlin, Anders (2); Svensson, Urban (2); Andreasson, Patrik (2); Niska, John (2); Salusjärvi, Markku (2); Lundberg, Bengt (2); Hyyppä, Kalevi (2); Lagerqvist, Ove (2); Berglund, Gun (2); Appelgren, Leif (2); visa färre...

Lärosäte: Luleå tekniska universitet (266); Lunds universitet (2); Högskolan Dalarna (2); VTI - Statens väg- och transportforskningsinstitut (1)

Språk: Engelska (184); Svenska (79); Finska (2); Tyska (1)

Forskningsämne (UKÄ/SCB): Teknik (266)Ta bort avgränsningen; Samhällsvetenskap (1)

År: 1989 (266)Ta bort avgränsningen

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