Search for dissertations about: "sawing"

Showing result 1 - 5 of 29 swedish dissertations containing the word sawing.

  1. 1. SAWING STRATEGIES FOR TROPICAL HARDWOOD SPECIES Simulation studies based on industrial conditions of Mozambique

    University dissertation from Luleå University of Technology

    Author : Pedro Ah Shenga; Luleå tekniska universitet.; [2016]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; sawing strategies; tropical hardwood species; simulation; volume yield; log grading; umbila; jambirre.; Träteknik; Wood Science and Engineering;

    Abstract : The harvesting of Mozambique tropical hardwood species is considerable higher than the natural regrowth in the forest and the stock is decreasing drastically. Therefore, it is important to improve the material recovery when the wood is refined (i.e., in sawing and further refinement to products such as joineries, furniture etc. READ MORE

  2. 2. Computed tomography of sawlogs knot detection and sawing optimization

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Erik Johansson; Luleå tekniska universitet.; RISE.; [2013]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Träteknik; Wood Technology;

    Abstract : Branches on trees introduce defects on sawn timber called knots. By scanning sawlogs using computed tomography, knots can be detected and accounted for so that the sawing process can be optimized with respect to outgoing product value. READ MORE

  3. 3. Mechanical processing for improved products made from Swedish hardwood

    University dissertation from Växjö : Växjö University Press

    Author : Jimmy Johansson; Växjö universitet.; [2008]
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; capillarity; capillary transport; wood products; customer requirements; ecoeffectiveness; sawing pattern; star-sawing; the PrimWood Method; timber products; volume yield; water transport; FORESTRY; AGRICULTURAL SCIENCES and LANDSCAPE PLANNING Product science Wood fibre and forest products; SKOGS- och JORDBRUKSVETENSKAP samt LANDSKAPSPLANERING Produktforskning Träfiber- och virkeslära;

    Abstract : Swedish hardwood is today used in the energy, pulp and mechanical hardwood industries. Only very small volumes of Swedish hardwood are, however, consumed by the mechanical industry that normally pays the highest timber price. READ MORE

  4. 4. Value Activation with vertical annual rings - material, production, products

    University dissertation from Stockholm : KTH

    Author : Dick Sandberg; KTH.; Linnéuniversitetet.; [1998]
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Forestry and Wood Technology; Skog och träteknik; wood quality; vertical grain; sawing; drying; value added products; Träteknik; Wood Technology; Forestry; agricultural sciences and landscape planning - Wood fibre and forest products; Skogs- och jordbruksvetenskap samt landskapsplanering - Träfiber- och virkeslära;

    Abstract : .... READ MORE

  5. 5. Adhesion to machined and laser ablated wood surfaces

    University dissertation from Institutionen för produktionssystem

    Author : Micael Stehr; KTH.; [1999]
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; ablation; adhesion; checks; coating; cracks; excimer laser; gluing; IR laser; mechanical machining; mechanical weak boundary layer; microscopy; notched specimens; pine; planing; sample preparation; sawing; scanning electronmicroscopy; spruce; tip-cracks; UV laser; weak boundary layer; wood;

    Abstract : This thesis is a contribution to the R&D-program ValueActivation at KTH,Division of Wood Technology and Processingand containsfive papers related to the evaluation and development ofmachining techniques (mechanical and irradiation treatments)whereby weak boundaries at the wood surfaces in the form of(mechanical) weak boundary layers and (micro) cracks due tomechanical treatment can be avoided.The first paper describes the development of a method–using a UV laser–to study the mechanically weakenedboundaries. READ MORE