Showing papers in "Journal of Manufacturing Processes in 2018"

TL;DR: In this paper, the authors review the emerging research on wire arc additive manufacturing (WAAM) techniques and the commonly used metallic feedstock materials, and also provide a comprehensive over view of the metallurgical and material properties of the deposited parts.

TL;DR: In this article, laser beam welding (LBW) and friction stir welding (FSW) are applied to high-strength aluminum alloys used in aircraft industry and displays their advantages compared with the riveting technique regarding structural integrity, weight and material savings.

TL;DR: In this article, the authors present a model for evaluating polymer feedstock materials as candidates for 3D printing across a variety of extrusion-based platforms and a simple viscoelastic model for each of these conditions based on the rheological and thermo-physical properties of the candidate material and the processing parameters of the extrusionbased deposition platform.

TL;DR: In this paper, Taguchi's full factorial design of experiments (DOE) is used to investigate the main effects of four processing parameters in the FDM process, those are the infill percentage, infill pattern, layer thickness, and extrusion temperature.

TL;DR: In this article, the mechanical properties, formability and forming limit diagrams of the tailor-welded blanks (TWBs) produced by friction stir welding (FSW) were analyzed experimentally.

TL;DR: In this paper, the authors proposed a tool condition monitoring predicting system, which not only helps to optimise the utilisation of the tool's life cycle but also secures the surface quality of finished components.

TL;DR: In this article, a numerical heat transfer and fluid flow model for the laser powder bed fusion (PBF) additive manufacturing (AM) was proposed to predict and prevent improper fusion among layers and hatches.

TL;DR: In this article, novel applications of solid-state technology based on FSP principles are appraised for use in additive manufacturing (AM) of metals/alloys and metal matrix composites, as variations of so-called additive friction-stir manufacturing (AFSM), which involves layer-by-layer deposition of materials by thermo-mechanical stirring of a rotating tool to induce high temperature via severe plastic deformation (SPD).

TL;DR: In this article, a case study has also been presented to introduce the readers with the behavior of some of the signals, and semantic utilization of the processing techniques in FSW has been proposed.

TL;DR: In this article, the development of the microstructure and crystallographic texture during friction stir welding (FSW) of AA2024 and AA6061 dissimilar joint was investigated.

TL;DR: In this paper, a 6-axis hybrid additive-subtractive manufacturing process is proposed and developed using a six degrees of freedom (DOF) robot arm, equipped with multiple changeable heads and an integrated manufacturing platform.

TL;DR: In this paper, the effects of laser welding process on the functional properties of NiTi and related alloys are investigated, and the impact of the post-weld heat treatment (PWHT) is studied as an effective solution to improve the downsides of the Laser welding process.

TL;DR: In this article, the influence of applying electromagnetic vibration during welding on the microstructural transformations, mechanical properties, and hot-cracking susceptibility in 316L stainless steel welding joints have been investigated.

TL;DR: In this article, the energy density, porosity and microstructure of cuboid Ti-6Al-4V alloy samples fabricated by the SLM process were investigated, paying particular attention to the manufacturing key factor ED.

TL;DR: In this paper, the effect of three different geometrically shaped micro-textures, namely horizontal micro-texture (WH), vertical microtexture (WV), and elliptical micro texture (WE), impregnated with MoS2 dry lubricant on the rake surface of the cutting inserts on the machining performance of hard turning was investigated.

TL;DR: In this article, the impact of SiC powder concentration on surface topography, particles deposition and subsurface structures in powder mixed electrical discharge machining (PMEDM) of Ti-6Al-4V-ELI work material was examined.

TL;DR: In this paper, the role of rotating and travelling speed of the FSW tool on the dissimilar lap-joining of an AA5058 aluminum alloy and polycarbonate (PC) sheets has been investigated.

TL;DR: In this article, the drillability of Inconel 718 has been experimentally investigated under dry, wet, and cryogenic conditions and the effects of cooling/lubrication conditions and coating material on drillability were evaluated in terms of thrust force, torque, cutting temperature, hole quality, and tool wear.

TL;DR: In this article, the authors investigated the printability of NiTi shape memory alloys using laser powder-bed fusion (L-PBF) additive manufacturing and showed that the linear energy density EL is a better design parameter for identifying satisfactory printability, while volumetric energy density, EV, is more relevant in controlling the transformation behavior of the processed material.

TL;DR: In this paper, a micro-textured drill tool with micro-texture at the flute and margin side is used to reduce the sliding friction at the contact interfaces of the drill.

TL;DR: In this paper, the effect of temperature and time of austempering process on microstructural evolutions, phase equilibrium, mechanical properties and fracture mode of weld metal in Hadfield steel joints were evaluated.

TL;DR: In this article, textured tools were used for machining micro-channels on borosilicate glass with ECDM, and the effect of the machining process parameters (voltage, pulse on time, pulse off-time, feed rate and electrolyte concentration) was investigated.

TL;DR: In this paper, the effect of tilt angles on the welding properties of FSW AA6061-T6 samples was investigated by varying the tool tilt angles for taper and taper threaded tools.

TL;DR: In this paper, the authors present an analytical approach to investigate the chip formation process in micro-milling aluminum 6082-T6 particularly by using natural diamond and tungsten carbide tools.

TL;DR: In this paper, solid state joining technology of friction stir welding (FSW) was carried out for Al and Mg butt joints, and the fracture micrographs were compatible with the corresponding ductility results and fracture surfaces of Zn added samples possessed a fine texture combining brittle and ductile fracture features.

TL;DR: In this article, ultrasonic vibration assisted laser welding (ULW) was used to solve the problems in laser welding of Hastelloy C-276 and austenite stainless steel 304 dissimilar materials.

TL;DR: In this paper, microstructure evolution and mechanical properties of multilayer Cu/Al/Cu explosive welded joints were studied at upper and lower interfaces after heat treatment to investigate the effects of time and temperature on joints, welded samples were annealed at 300 and 400°C for different soaking times of 30 min and 20h.

TL;DR: In this paper, an ultrasonic-assisted friction stir welding (UaFSW) joint was employed to join 6061-T6 aluminum alloy and AZ31B magnesium alloy.

TL;DR: In this article, the authors employed a rotating tool when joining thin aluminum sheets with Carbon Fiber Reinforced Polymer (CFRP) laminates by means of clinching, which was aimed at increasing the aluminum formability and at the same time reducing the joining forces.

TL;DR: In this article, the effect of process parameters such as barrel temperature, platform temperature, build orientation, raster angle and number of contours have been studied on the tensile properties.