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The mechanical properties of lattice truss tructures with loadbearing shells made of selectively laser melted Hastelloy X (TM)
KTH, School of Industrial Engineering and Management (ITM), Production Engineering.
2011 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

This thesis discusses how to test the mechanical properties of openlattice truss structures and hybrids being a tube containing a latticetruss structure. By properties we mean strength, stiffness, thermalconductivity and so forth.Mechanical testing was done on two different structures to betterunderstand how the load-bearing properties change when these structuresare subjected to tensile, compressive and bending forces. The structuresinvestigated were Diamond and Octagon built at 45° and 90°. Acousticemission was also used to evaluate and analyze the different behaviour ofthe structures. The test results were used to produce design criteria forproperties in different cell structures manufactured of Hastelloy X™. Amap with design criteria containing stiffness and weight per cubiccentimetre was produced for parts that would be subjected to compressiveforces.

Place, publisher, year, edition, pages
2011. , 145 p.
, Degree Project in Production Engineering, Second Level, 476
Keyword [en]
Selective laser melting, SLM, lattice truss structure, lattice, tensile testing, compression testing, bend testing, superalloy.
National Category
Engineering and Technology
URN: urn:nbn:se:kth:diva-41320OAI: diva2:457192
Educational program
Master of Science in Engineering - Mechanical Engineering
Available from: 2011-11-18 Created: 2011-09-26 Last updated: 2011-11-18Bibliographically approved

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