Biotecnología

Biotecnología

Static and dynamic analyses of the effects of shim material stiffness on insert crack initiation and propagation
28/11/2022 - Microcracks can form on the surface or inside an insert during forming or cutting processes. These microcracks tend to expand rapidly under impact loading, eventually leading to tool fracture and...
Preparation of TiNbTaZrMo high-entropy alloy with tunable Young's modulus by selective laser melting
28/11/2022 - Biological high-entropy alloy (Bio-HEA) is a new generation of biomedical alloys with excellent mechanical properties and good biocompatibility. However, elemental segregation often exists during...
Effect of fabrication method and surface roughness on spray characteristics for small pressure-swirl atomizers
28/11/2022 - The paper investigates the effect of the fabrication method, precision and surface roughness on atomization nozzle performance. A comprehensive review of the available knowledge on the topic is an...
Microstructure and mechanical properties of wire-fed arc-based directed energy deposition of high-strength steel after ultrasonic impact oxidation treatment
28/11/2022 - The ultrasonic impact oxidation treatment (UIOT) was applied to the local region of a high-strength steel specimen fabricated via a wire-arc directed energy deposition (DED) process. The...
Joining of metal and non-polar polypropylene composite through a simple functional group seeding layer
25/11/2022 - Polypropylene (PP) and its composites are one of the hardest to directly join with metals due to their inherent chemical incompatibility. This paper presents a simple, efficient, and...
Improving dry machining performance of surface modified cutting tools through combined effect of texture and TiN-WS2 coating
25/11/2022 - In this research work, investigation on different surface modification techniques on cutting tools such as TiN-WS2 coating (T2), textured cutting tool (T3) and TiN-WS2 coated textured tool (T4) in...
Influence of alloy composition and lubrication on the formability of Al-Mg-Si alloy blanks
25/11/2022 - The formability of 1.0 mm-thick Al-Mg-Si alloy blanks with different Si and Mg contents was numerically and experimentally investigated using two deep drawing tools: (i) a cross-shaped tool with...
Investigation of machinability in turning of PTFE based on MRR and cutting energy
25/11/2022 - Polytetrafluoroethylene (PTFE) has been used as a major material for sealing structural component in semiconductor manufacturing industry. This paper focuses on the influence of cutting parameters...
Effect of Ti content on microstructure and mechanical properties of SiCf/SiC composites/GH536 superalloy joints brazed with CoFeCrNiCuTi high entropy filler
25/11/2022 - In this study, SiCf/SiC composite and GH536 superalloy was successfully vacuum brazed with a self-made CoFeNiCrCuTix high entropy filler with different Ti content. The effect of Ti content in the...
Direct ink writing of hierarchically porous Al2O3 matrix composites with enhanced wettability of Al
25/11/2022 - Alumina (Al2O3) ceramics have been successfully applied to many industrial fields, however, the poor wettability between alumina and metal limits its further application. In this work, SiC...
Regulating the vibration of aerostatic journal spindle based on piezoelectric ceramics
25/11/2022 - The aerostatic spindle often occur offset and additional vibration under the action of external load due to the low stiffness, thus affecting the rotary accuracy of the spindle. In order to solve...
Deep-learning based analysis of metal-transfer images in GMAW process
25/11/2022 - Gas metal arc welding (GMAW) is a widely used metal-joining method in industrial manufacturing. In this method, the metal-transfer process plays an important role in determining welding quality....
Process parameters and system responses in friction extrusion
25/11/2022 - Friction extrusion is an emerging manufacturing process that imparts improved properties and unique microstructures to materials. In this study, the effects of die features (i.e., the absence or...
Study on residual stress evolution of laser cladding low chromium carbon alloy on low-pressure rotor
25/11/2022 - The in-service behavior of low-pressure rotor components can potentially be impacted by the residual stress distribution of cladding layers. To predict the evolution of residual stress in a...
Development of cryogenic assisted machining strategy to reduce the burr formation during micro-milling of ductile material
25/11/2022 - Micro-milling is an inevitable machining process for the fabrication of products with complex shapes and high dimensional accuracy. However, this process usually needs post-processing operations...
Welding process optimization for the inner tank of the electric water heater by numerical simulation and experimental study
25/11/2022 - The inner tank is the core weldment of the electric water heater (EWH). During service, leakage often occurs at the welds of the inner tank due to stress concentration. Reducing the welding...
Modeling of thermal damage and residual stress in slicing of silicon wafers using wire-electrical discharge machining: Comparison with experiments
25/11/2022 - Wire electrical discharge machining (wire-EDM) is a potential technique to fabricate high-quality ultra-thin silicon (Si) wafers. However, its universal integration at the industrial scale remains...
Numerical and experimental investigation into temperature field and profile of Stellite6 formed by ultrasonic vibration-assisted laser cladding
25/11/2022 - Laser cladding technology is widely used in component processing. However, the rapid temperature variation of the molten pool during the cladding could lead to the poor quality of the cladding...
Additive manufacturing design approach to strut-based functionally graded porous structures for personalized implants
23/11/2022 - This study aims to create mathematical models (MMs) and maps that will facilitate personalized implant design and provide the selection of design parameters that give desired mechanical and...
Prediction and evaluation of surface roughness with hybrid kernel extreme learning machine and monitored tool wear
23/11/2022 - In the modern manufacturing industry, surface roughness is a critical parameter to characterize surface quality. The accurate prediction of surface roughness is of great significance for...
Shaping of the Fresnel lens array on roller molds by 6-axis diamond machining
23/11/2022 - The Fresnel lens arrays are rapidly developing with the increasing demand for better optical performances and capabilities. For the roll-to-roll embossing of optical films, direct diamond...