On the applicability of selective laser melting on pistons for the oil & gas industry: Fatigue limit and fracture toughness of selective laser melted TI6AL4V

Pistons for reciprocating compressors for industrial applications are often made of specialised materials. These prove to have problems with manufacture due to the high quality and short production times needed in combination with a low production volume per design. Additive manufacturing, specifically selective laser melting, could solve the...

Thermal process modelling of lattice structures during selective laser melting process

As a type of powder-bed-based Additive Manufacturing (AM), Selective Laser Melting (SLM) is widely used for building metallic lattice structures. However, during SLM process, geometrical imperfections and defects, such as strut over-sizing or under-sizing, typically exist in components due to overheating, which strongly influence their...

Fatigue Crack Propagation in Additively Manufactured and Functionally Graded Inconel 718

Additive Manufacturing (AM), commonly known as 3D printing, exemplifies the recently emerging processing methodologies that aim to substitute the conventional routes, such as to produce parts with complex geometries and eliminate expensive tooling. AM also allows high degree of freedom and rapid prototyping for functional part optimization. This...

Fatigue Behaviour of functionally graded Inconel 718 manufactured by selective laser melting

Functionally graded materials (FGMs) represent a new class of materials that consist of graded compositional and microstructural patterns allowing to tailor properties. Additive manufacturing (AM) or more commonly known as 3D-printing offers a paradigm shift in FGMs and engineering design due to its ability to produce components with complex...

The effect of post process treatments on biomechanical properties of Ti6Al4V metamaterials and spinal cage implants manufactured by selective laser melting

Selective laser melting (SLM) is an additive manufacturing technique, which is currently on the rise of being used for manufacturing bone implants. Spinal cage, dental and hip implants can for example be manufactured using SLM. Ti6Al4V lattice structures, categorised as metamaterials, can be printed by SLM with mechanical properties close to...

Additively manufactured suspension components for an F1 car: Design, Simulation,Manufacturing and Testing

The recent possibilities given by additive manufacturing in free shape design have been seen as a<br/>potential breakthrough in the design and production of structural components of a racecar and more<br/>generally their influences on the future lightweight strategies in the automotive industry is expected<br/>to influence the next generation of...

Influence of post-processing on Ti6Al4V lattice structures produced by Selective Laser Melting

Selective laser melting (SLM) is a novel technique being increasingly used for the production of porous structures with a high degree of precision and near net shape. These porous materials are finding their use in the biomedical industry for implants. In this thesis, the effect of post-processing using hot isostatic pressing (HIP) and surface...

The set-up of an integrated working concept factory using metal additive manufacturing

In order to produce more complex parts, additive manufacturing is on the rise as a competitor for more conventional manufacturing methods. Unfortunately, additive manufacturing often produces products with a less desirable tolerance and surface roughness. Subtractive methods require special tooling and fixtures for each part design and typically...

A Knowledge Based System to Support Design for Selective Laser Melting

Modern Computer Aided Design/Engineering can assist in the design of highly optimized engineering structures. Such structures allow for a significant reduction on the strain of resources across the product life cycle, where the potential for weight reduction is most beneficial for the aerospace industry. However, their production is currently...