Purpose: This paper aims to provide a flexible solution to include additive manufacturing into a process chain complying with Industry 4.0 pillars, overcoming major drawbacks in terms of reliability and experimental effort. Design/methodology/approach: The study is based on the combination of...

Purpose: the aim of the study is to compare the performance of different supply chain configurations adopting Additive Manufacturing. Five input factors have been varied with the aim of testing the response of the supply chain to different starting conditions. In order to evaluate the supply...

Wire-feed laser additive manufacturing is an emerging fabrication technique capable of highly automated large-scale volume production that can reduce both material waste and overall cost while improving product lead times. Quality assurance is necessary for implementation into critical...

Using powders of different particle sizes, 9Cr steel samples are additively prepared by laser coaxial powder feeding technology. 9Cr steel is a material that has been widely used in pressure vessel parts in thermal power plants and nuclear power plants, and has good high-temperature creep...

The use of supercritical carbon dioxide (sCO2) as a working fluid is garnering interest in next generation power production systems due to the possibility of increased operational efficiencies and lower associated costs. Its implementation requires alloys with excellent high temperature strength...

NiTi alloy exhibits superior superelastic properties but its wide application is limited by its poor workability. In this study, Ni-rich NiTi wire was used as the feedstock and a wall-shaped NiTi component with height of 130mm was deposited on Ti substrate by cold metal transfer (CMT) based wire...

This work proposes a new auxetic lattice based on replacing the vertexes of traditional three-dimensional re-entrant structural with self-similar configurations. Derived by Castigliano's second theorem, a theoretical model is built to predict its elastic mechanical properties, including the...

Absorbance is often used for simulations or validation of process parameters for powder-based laser materials processing. In this work, the absorbance of 39 different metal powders for additive manufacturing is determined at 20 different laser wavelengths. Different grain sizes and aging states...

Despite the flexibility offered by additive manufacturing (AM), various process factors ranging from design to material can lead to inconsistent repeatability and quality issues from build-to-build. Currently, AM process monitoring mainly focuses on gaining an understanding of physical phenomena...

In the present work, a novel Laser Directed Energy Deposition (LDED) process planning methodology is proposed to build a dome structure with variable overhang angles. Overhang structures with different overhang angles were built where the maximum angle of 35° can be used to build overhang...