硬木的新材料概念.pdf

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1、New material concepts for hardwoodJohannes Konnerth,Tobias Nenning&Maximilian PramreiterInstitute of Wood Technology and Renewable Materials BOKU UniversityJohannes Konnerth|Institute of Wood Technology and Renewable Materials2Hardwood for structural productsBranchStemUniStrand:Structural Strand Bas

2、ed ProductsNew material concepts for hardwoodsHardwood in construction:Strip-like laminationsStrong Hardwood:Better Understanding of Properties x Performance x ProcessBeech Oak Poplar 3-D Trees:Point Clouds(A.Tockner)A.Neumller&S.Lux3PropertiesStructurePerformanceProcessing The MacrofiberTechnology3

3、Mechanical branch wood properties2Open AccessBranch1Stem1:TocknerA.,Institute of Forest Growth,2:Nenning et al.(2024),3:Bliem et al.(2020)Wood qualityMFAJohannes Konnerth|Institute of Wood Technology and Renewable MaterialsUnderstanding potential of branch woodJohannes Konnerth|Institute of Wood Tec

4、hnology and Renewable Materials4CLT analogue Strand-based material:UniStrandStructural optimizationFCharacterizationRaw materialUnidirectionally oriented OSLAdhesive bondingStrength classesIIIStandardization&ParametrizationOptimized OSL compositeMulti story buildingsA.GhazanfariModeling&structural d

5、esignKonnerth,Kromoser,PramreiterJohannes Konnerth|Institute of Wood Technology and Renewable Materials5CLT analogue Strand-based material:UniStrandSoftwood:Pine,Spruce,Larch,Douglas firHardwood:Poplar,Beech,Birch,OakA.Fasalek&L.MalzlII II II Bending Compression TensionStrength MPamin.spec.strength

6、C24(EN 338)Johannes Konnerth|Institute of Wood Technology and Renewable Materials6Mechanical performance of single layersEN 408&789650 kg/m3 10%MC*characteristicstrengthA.Fasalek&L.MalzlJohannes Konnerth|Institute of Wood Technology and Ren