Biotecnología

Biotecnología

Fusion welding of ultra-high strength structural steels – A review
08/08/2022 - Large-scale usage of high and ultra-high strength steels is strongly linked to the availability of suitable joining techniques ensuring consistent properties throughout the welded structure. For...
Laser-assisted robotic roller forming of an ultrahigh strength martensitic steel
08/08/2022 - Laser-assisted robotic roller forming (LRRF) was developed as a means for bending ultrahigh strength martensitic steel (MS1300) strip without fracture. The strip is bent through application of a...
Molecular dynamics analysis of the influence of ion implantation parameters on ultra-precision machining of silicon carbide
08/08/2022 - This paper aims to study the mechanism of ion implantation. Molecular dynamics software was used to simulate the process of 3C-SiC workpiece being ion implanted with different implant parameters....
Metal transfer behavior during CMT-based Wire Arc Additive Manufacturing of Ti-6Al-4V alloy
08/08/2022 - CMT-Wire Arc Additive Manufacturing (CMT-WAAM) has the advantages of low heat input and high production efficiency. However, the surface geometric accuracy of the CMT- fabricated sample is...
High-precision and high-efficiency copper removal by femtosecond laser in mixed hydrochloric acid?oxygen atmosphere
08/08/2022 - Low-defect, high-efficiency, and high-precision copper (Cu) removal is critical for the development of high-density 3D-integration technology for integrated circuits (ICs). Herein, a hydrochloric...
Forming and weld grain growth behavior of arc stud welding driven by rotating magnetic field
08/08/2022 - Local non-fusion is easy to occur in the process of medium and large diameter hollow stud welding, which reduces the forming quality and mechanical properties of the joint. In this study, a method...
In situ quality monitoring in direct energy deposition process using co-axial process zone imaging and deep contrastive learning
08/08/2022 - Many strategic industrial sectors prefer Directed Energy Deposition (DED) to other Additive Manufacturing (AM) technologies due to the high material deposition and build rates. However, the...
Investigation and implementation for forming lead screw by through-feed rolling process with active rotation
05/08/2022 - A through-feed rolling process with active rotation for manufacturing lead screw has been developed, where the speed matching and stable motion between workpiece and the rolling die during the...
Edge drop control of cold rolled silicon steel strip based on model predictive control
05/08/2022 - The closed-loop edge drop control system of cold rolled silicon steel strip is a typical time-delay control system, and the measurement time-delay has a great influence on the stability of the...
Development of lattice structure with selective laser melting process: A state of the art on properties, future trends and challenges
05/08/2022 - Lattice structures are vital for biological applications because of its numerous benefits (for example, faster and stronger binding to bone tissue). Consequently, processing of lattice structure...
Temperature field modelling in the form grinding of involute gear based on high-order function moving heat source
05/08/2022 - Grinding is one of the primary methods to enhance the tooth surface quality. For gear form grinding, due to the complexity of grinding movement and nonuniform grinding conditions of the tool and...
Analysis of surface integrity in drilling carbon fiber reinforced polymer composite material under various cooling/lubricating conditions
05/08/2022 - Carbon Fiber Reinforced Polymer (CFRP) composite materials are a class of advanced materials widely used in versatile applications, including aerospace and automotive industries, due to their...
Heat generation and transfer in micro resistance spot welding of enameled wire to pad
05/08/2022 - The single-sided micro resistance spot welding (MRSW) of enameled copper wire to pad is widely applied in electronics manufacturing. The welding quality is significantly influenced by the process...
Computational methods for the detection of wear and damage to milling tools
04/08/2022 - The current paper presents a new computational approach to detect wear and damage to milling tools' cutting edges. The proposed approach is independent from exact information on...
An accelerated analytical method for predicting workpiece velocity and displacement during electromagnetic forming
04/08/2022 - This paper presents complementary analytical analyses, experiments, and numerical simulations of the electromagnetic tube compression (EMTC) process using a multi-turn axisymmetric coil with a...
Laser additive manufacturing of a 316L/CuSn10 multimaterial coaxial nozzle to alleviate spattering adhesion and burning effect in directed energy deposition
04/08/2022 - Multimaterial additive manufacturing is aimed at the integration of functionality and mechanical performance of dissimilar materials for various applications. In this work, a 316L/CuSn10...
Experimental and simulation study of material removal behavior in ultra-precision turning of magnesium aluminate spinel (MgAl2O4)
04/08/2022 - Ultra-precision turning is one of the effective process methods to machine magnesium aluminate spinel with high efficiency and low damage. The influences of turning parameters and material...
Analysis of field shaper materials on the deformation behavior of (AA6061) tube in electromagnetic forming process through simulation and experiments
04/08/2022 - Field shaper (FS) is an important tooling of an electromagnetic forming (EMF) systems. Therefore, FS materials and its geometry plays a crucial role in the effective forming and joining process of...
A novel post-weld composite treatment process for improving the mechanical properties of AA 6061-T6 aluminum alloy welded joints
04/08/2022 - The welded joint for a heat-treated aluminum alloy AA 6061-T6 showed softening in the fusion zone (FZ) and the heat-affected zone (HAZ). This paper proposed a post-weld composite treatment process...
High-speed milling of Ti6Al4V under a supercritical CO2 + MQL hybrid cooling system
04/08/2022 - Carbon dioxide (CO2) becomes supercritical above its critical pressure and temperature (Pc = 73.8 bar and Tc = 31.1 °C). Supercritical CO2 provides lubrication and additionally is able to...
Replaceable drill bit with compound step and sawtooth structures for damages and drilling-cost reduction of CFRP composite
04/08/2022 - Frequently-occurred drill-exit damages and short tool life are challenging issues for drilling CFRP in aerospace industries. High-performance and cost-effective drill bits are always desired. This...