Investigation of the Geometry-Dependent Anisotropic Material Behavior of Filigree Struts in ALM-Produced Lattice Structures

Reinhart, Günther; Teufelhart, Stefan; Riss, Fabian

doi:10.1016/j.phpro.2012.10.063

Cited by 19 publications

(9 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results indicate that thinner structures exhibit consistently lower strength and ductility which is consistent with the findings on round tensile specimens [29]. It is assumed that the saturation of the specific material properties are achieved for a specimen diameter greater than 3 mm–5 mm [29–31].…”

Section: Discussionsupporting

confidence: 86%

Mechanical properties of small structures built by selective laser melting 316 L stainless steel – a phenomenological approach to improve component design

Wiesent

Schultheiß

Lulla³

et al. 2020

Materialwissenschaft Werkst

View full text Add to dashboard Cite

Experimental investigations are conducted to quantify the influence of specimen thickness and orientation on the mechanical properties of selective laser melted stainless steel 316 L. The results indicate that the mechanical strength and ductility increase with increasing specimen thickness until a saturation value is reached from a specimen thickness of about 2 mm. Specimen orientation dependency is pronounced for thin specimens (<1.5 mm), whereas only small deviations in strength are observed for thicker specimens with orientations of 30°, 45° and 90° to build direction. The mechanical properties of the specimen orientation of 0° to build direction shows great deviation to the other orientations and the smallest overall strength. A reliable design of selective laser melted components should account for specimen thickness and orientation, e. g. by a correction factor. Furthermore, it is recommended to avoid loads vertical (90°) and parallel (0°) to build direction to guarantee higher ductility and strength.

show abstract

Section: Discussionsupporting

confidence: 86%

Mechanical properties of small structures built by selective laser melting 316 L stainless steel – a phenomenological approach to improve component design

Wiesent

Schultheiß

Lulla³

et al. 2020

Materialwissenschaft Werkst

View full text Add to dashboard Cite

show abstract

“…Furthermore, enclosed lattices can be used as internal support for flexible structures such as inflatable (deployable) wings for unmanned aerial vehicles (UAVs) [197] [198]. In structural engineering, the orientation and diameter of the individual struts within a truss or lattice can be optimized to improve stress distribution, strength, and manufacturability [268][323] [324] (Fig. 27).…”

Section: Lattices Trusses and Cellular Materials For Custom Materialsmentioning

confidence: 99%

Design for Additive Manufacturing: Trends, opportunities, considerations, and constraints

et al. 2016

View full text Add to dashboard Cite

The past few decades have seen substantial growth in Additive Manufacturing (AM) technologies. However, this growth has mainly been process-driven. The evolution of engineering design to take advantage of the possibilities afforded by AM and to manage the constraints associated with the technology has lagged behind. This paper presents the major opportunities, constraints, and economic considerations for Design for Additive Manufacturing. It explores issues related to design and redesign for direct and indirect AM production. It also highlights key industrial applications, outlines future challenges, and identifies promising directions for research and the exploitation of AM's full potential in industry.Design, Manufacturing, Additive Manufacturing

show abstract

“…[1,38,64,83,91,116,126] Additionally to these given influences related to the material and manufacture, there are further volatilities. [71,125,232] Almost stable properties were documented past a diameter size of 3-5 mm. [71,125,232] Almost stable properties were documented past a diameter size of 3-5 mm.…”

Section: Tensile Strengthmentioning

confidence: 99%

“…Delicate samples, for example structures comprised of thin struts, revealed overall a lower strength and ductility, even a lower Young's modulus, compared to bulkier samples. [71,125,232] Almost stable properties were documented past a diameter size of 3-5 mm. Likewise to conventional bulk material, machined samples were found to show better mechanical properties, documented studies suggest an strength increase of 5-11% due to the removal of the surface, but also due to the removal of the increased pore density in the transition zone between the contour and core irradiation.…”

Section: Alloy Surface Hardness [Hv] Comment Referencesmentioning

confidence: 99%

A Review of Metal Fabricated with Laser‐ and Powder‐Bed Based Additive Manufacturing Techniques: Process, Nomenclature, Materials, Achievable Properties, and its Utilization in the Medical Sector

et al. 2018

View full text Add to dashboard Cite

Additive manufacturing has multiple advantages over conventional fabrication techniques, such as the geometrical freedom and, to a great extent, the omission of tooling equipment. Hence, futuristic designs and non-standard topology-optimized structures can be fabricated without causing noteworthy extra cost, since the geometrical complexity is, exaggeratedly spoken, for free. The manufacturing time and the amount of required raw material are the key criteria, which determine the expenses. What at first glance appears as an engineer's dream, introduces its complexity in the description of the material's characteristics and their volatility to the manufacturing conditions. Within this study, the main properties (i.e., surface hardness, tensile, and compression strength, as well as fracture toughness) and their anisotropic and inhomogeneous nature are addressed. Detailed overviews of the progress to date for aluminum, iron, titanium, cobalt, and nickel based raw materials are provided. Furthermore, an overview about the state-of-the-art in the medical sector is included, comprising the areas of utilization and several trail studies.

show abstract

Investigation of the Geometry-Dependent Anisotropic Material Behavior of Filigree Struts in ALM-Produced Lattice Structures

Cited by 19 publications

References 3 publications

Mechanical properties of small structures built by selective laser melting 316 L stainless steel – a phenomenological approach to improve component design

Mechanical properties of small structures built by selective laser melting 316 L stainless steel – a phenomenological approach to improve component design

Design for Additive Manufacturing: Trends, opportunities, considerations, and constraints

A Review of Metal Fabricated with Laser‐ and Powder‐Bed Based Additive Manufacturing Techniques: Process, Nomenclature, Materials, Achievable Properties, and its Utilization in the Medical Sector

Contact Info

Product

Resources

About