Materiales compuestos

Materiales compuestos

Cavitation intensity and erosion pattern of a self-excited cavitating jet
12/03/2020 - The self-excited water jet technology is widely used in submerged conditions, while its performance is restricted under high confining pressure. To improve its erosive capability, the cavitation...
Innovative joining technology for the production of hybrid components from FRP and metals
12/03/2020 - The joining of fiber-reinforced plastics (FRP) currently poses particular process engineering challenges. Adhesive bonding or mechanical joining is normally used for such joints. However, bonding...
New billet cutting process combining torsion and shear load to reduce droop height
12/03/2020 - A novel cutting method that combines shearing and torsion was investigated. Shearing is a fast process that has high precision in term of cut length. However shape defects such as droop and burr...
A physical based empirical model for the accumulated strain in novel Metal Continuous Screw Extrusion (MCSE)
12/03/2020 - This work concerns the novel Metal Continuous Screw Extrusion process (MCSE). The process gives new opportunities for processing metal alloys, composites and novel multi-materials. By principle,...
Study on subsurface damage and surface quality of silicon carbide ceramic induced by a novel non-resonant vibration-assisted roll-type polishing
12/03/2020 - Subsurface damage (SSD) and surface roughness (SR) induced by the finishing process significantly influence the industrial and technological application of optical components. In this paper, a...
Microstructural Variation at Interface during Fiber Laser Joining of NiTi/Ti6Al4V and effect of Mechanical Strength
12/03/2020 - Welding of nitinol (NiTi) shape memory alloy (SMA) and titanium-based alloy (Ti6Al4V) finds potential application in aerospace and medical industries. However, joining of these materials poses...
A new strategy for acquiring the forming parameters of a complex spatial tube product in free bending technology
12/03/2020 - Free bending technology is a new bending process for manufacturing freeform tube products. When manufacturing a complex spatial product, the variation of bending curvatures and torsions will...
Theory of single point incremental forming of tubes
12/03/2020 - Knowledge of the deformation mechanics in single point incremental forming of tubes is of great importance to understand the physics behind failure and the workability limits in thin-walled tube...
Crack behavior in ultrafast laser drilling of thermal barrier coated nickel superalloy
12/03/2020 - Quantitative analysis is required to explore the mechanism of crack generation in ultrafast laser drilling of thermal barrier coated nickel superalloy. In this study, a simple thermo-mechanical...
MATERIAL MODELING AND SIMULATION OF CONTINUOUS-BENDING-UNDER-TENSION OF AA6022-T4
12/03/2020 - In earlier contributions, we discussed continuous-bending-under-tension (CBT) experiments on AA6022-T4. We found that CBT significantly enhanced the elongation-to-fracture and strength over...
On the turning of electron beam melted gamma-TiAl with coated and uncoated tools: A machinability analysis
12/03/2020 - Electron beam melting (EBM) is one of the promising technologies with the capability of producing complex near-net shapes from difficult to process materials such as titanium alloys. However, the...
Microstructure evolution difference in Mg96.5Gd2.5Zn1 alloys extruded from as-cast and solution-treated states
12/03/2020 - Microstructure evolution and mechanical properties of Mg96.5Gd2.5Zn1 alloys in as-cast and solution-treated states were systematically studied during hot extrusion. The as-cast alloy mainly...
Effects of die land length and geometry on curvature and effective strain of profiles produced by a novel sideways extrusion process
12/03/2020 - In the present investigation, effects of length and geometry of die land/bearing on curved profiles/sections produced by a novel process, differential velocity sideways extrusion (DVSE), were...
Laser Welding of Carbon fibre filled Polytetrafluoroethylene
12/03/2020 - Herein, a method is described to weld polytetrafluoroethylene (PTFE), a non-melt processable thermoplast, using a thulium laser. Different settings for laser power and speed were used. The...
Influence of ultrasonic vibrations on the microstructure and mechanical properties of Al/Ti friction stir lap welds
12/03/2020 - Al/Ti dissimilar welds were fabricated by ultrasonic vibrations assisted friction stir welding, which eliminated the tool wear and enhanced the material flow. The peak temperature was lowered, and...
Microstructure and wear resistance of TiAlNiSiV high-entropy laser cladding coating on Ti-6Al-4V
12/03/2020 - High-entropy alloy (HEA) coatings with near-equal molar ratio TiAlNiSiV were synthesized by laser cladding on a Ti-6Al-4?V alloy. The structure and composition of the HEA coating were...
KEYHOLE DYNAMICS AND MORPHOLOGY VISUALIZED BY IN-SITU X-RAY IMAGING IN LASER MELTING OF AUSTENITIC STAINLESS STEEL
12/03/2020 - In-situ X-ray observation was used to investigate the effect of process conditions on keyhole behavior in laser melting with austenitic stainless steel. It was confirmed that the keyhole depth and...
Analytical study of delamination damage and delamination-free drilling method of CFRP composite
12/03/2020 - Drilling of composite materials is a challenge in aviation and aerospace field. Delamination often occurs at the hole exit which can reduce the strength of the structure. In this study, to reduce...
Experimental study on electrochemical etching for titanium printed circuit heat exchanger channels
12/03/2020 - Printed circuit heat exchangers (PCHEs) have attracted wide attention in the nuclear energy field owing to their high compactness, strong pressure endurance, and high heat transfer capacity. In...
Dissimilar metal joining of aluminum to steel by hybrid process of adhesive bonding and projection welding using a novel insert element
12/03/2020 - Multi-material design offers cost-efficient lightweight solutions for automotive body-in-white production. It can be realized by joining ultra-high strength steels with aluminum alloys, using...
The Influence of Constraint Rolls on Temperature Evolution and Distribution in Radial Ring Rolling
12/03/2020 - Producing nearer to net-shape hot rolled rings whilst meeting demanding product property requirements is a major industrial challenge, especially in high value materials such as Nickel-based...