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Surface vs Truss lattice networks, benefits and limitations
Örebro universitet, Institutionen för naturvetenskap och teknik.ORCID-id: 0000-0002-9362-8328
Örebro universitet, Institutionen för naturvetenskap och teknik.ORCID-id: 0000-0003-1408-2249
2018 (engelsk)Inngår i: NAFEMS nordic: Exploring the Design Freedom of Additive Manufacturing through Simulation, NAFEMS , 2018, s. 217-218Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

The use of additive manufacturing is growing rapidly among industries within many different fields of fabrication. The benefits of applying additive manufacturing can be many and an application that have received special interest is the ability to design lightweight components. Lightweight components can be fabricated with additive manufacturing with the use of lattices that have a high stiffness to weight ratio and topology optimised, complex, designs. The most commonly used lattices today are based on trusses, however, there is also the possibility to generate lattices based around continuous surfaces. In this study, the properties of the popular body-centred-cubic lattice are compared the properties of the lesser known Schwartz diamond surface lattice. The mechanical compression properties, the fabrication processes, and the possibilities of the lattices are discussed and analysed.

sted, utgiver, år, opplag, sider
NAFEMS , 2018. s. 217-218
HSV kategori
Forskningsprogram
Maskinteknik
Identifikatorer
URN: urn:nbn:se:oru:diva-70704OAI: oai:DiVA.org:oru-70704DiVA, id: diva2:1270075
Konferanse
NAFEMS Nordic 2018, Göteborg, Sweden, 24-25 April, 2018
Tilgjengelig fra: 2018-12-12 Laget: 2018-12-12 Sist oppdatert: 2020-01-31bibliografisk kontrollert
Inngår i avhandling
1. More Than a Shadow: Computed Tomography Method Development and Applications Concerning Complex Material Systems
Åpne denne publikasjonen i ny fane eller vindu >>More Than a Shadow: Computed Tomography Method Development and Applications Concerning Complex Material Systems
2019 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
Abstract [en]

The complexity of the components fabricated in today's industry is ever increasing. This is partly due to market pressure, but it is also a result from recent progress in fabrication technologies that open up new design possibilities. The increased use of additive manufacturing and multi-material systems, especially, has driven the complexity of parts to new heights. The new complex material systems bring benets in many areas such as; mechanical properties, weight reduction, and multifunctions. However, the increased complexity also makes inspection and dimensional control more dicult. In additive manufacturing, for example, internal features can be fabricated which cannot be seen or measured with conventional tools. There is thus a need for non-destructive inspection methods that can measure these geometries. Such a method is X-ray computed tomography. Computed tomography utilizes the X-rays ability to penetrate material to create 3D digital volumes of components. Measurements and material investigations can be performed in these volumes without any damage to the investigated component. However, industrial computed tomography is still not a fully mature method and there are many uncertainties associated with the investigation technique. In this work, a dual-energy computed tomography tool has been developed with the aim to increase the performance of computed tomography when investigating complex geometries and material combinations. This method has been applied to various phantoms and an industrial case. Also, in this work, complex lattice structures fabricated with additive manufacturing have been investigated and analysed using computed tomography. The results show that the new DECT method improves measurement results and can be utilized to inspect multi-material components. The results also show that computed tomography can be used successfully to gain knowledge about complex lattices.

sted, utgiver, år, opplag, sider
Örebro: Örebro University, 2019. s. 139
Serie
Örebro Studies in Technology, ISSN 1650-8580 ; 84
HSV kategori
Identifikatorer
urn:nbn:se:oru:diva-73739 (URN)978-91-7529-286-1 (ISBN)
Disputas
2019-06-12, Örebro universitet, Teknikhuset, Hörsal T, Fakultetsgatan 1, Örebro, 13:15 (engelsk)
Opponent
Veileder
Tilgjengelig fra: 2019-04-15 Laget: 2019-04-15 Sist oppdatert: 2020-01-31bibliografisk kontrollert

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