The corrosion inhibition efficiency of aniline, formaldehyde and piperazine based polymer (ADPD) on N80 steel in 3.5% NaCl solution saturated with carbon dioxide was investigated using electrochemical impedance spectroscopy (EIS), potentiodynamic polarization, weight loss, scanning microscopy (SECM), electron (SEM) measurements, density functional theory (DFT) molecular dynamics simulation (MD). adsorption onto surface followed Langmuir isotherm model. Potentiodynamic polarization study...

Abstract The current global scenario underlines the urgency of addressing energy consumption and its environmental implications. Contemporary international strategies aim to foster public awareness engagement in sustainable initiatives. World Environment Protection Commission aspires qualify for an equitable transition toward energy‐efficient technologies, strategic policies, achieving net‐zero carbon emissions. principal aspiration is enhance community understanding policies. Furthermore, a...

Nowadays, the use of metal processing additive technologies is a rapidly growing field in manufacturing industry. These technologies, such as 3D printing (also known manufacturing) and laser cladding, allow for production complex geometries intricate designs that would be impossible with traditional methods. They also offer ability to create parts customized properties, improved strength, wear resistance, corrosion resistance. In other words, these have potential revolutionize way we design...

Two synthesized polymers were studied as potential corrosion inhibitors for N80 Steel in a sweet corrosive environment. Poly-2-(methacryloyloxy)ethyltrimethyl ammonium chloride (PDMC), or P1, and poly-2-(methacryloyloxy)ethyltrimethyl chloride-co-N-vinyl-2-pyrrolidone P(DMC-co-NVP), P2, investigated using electrochemical impedance spectroscopy, polarization technique, scanning microscopy (SECM), Kelvin probe (SKP), vibrating electrode technique (SVET). The surface was examined contact angle,...

Friction and wear performances of natural grade poly-ether-ether ketone (PEEK) three PEEK composites e.g. 30 mass% carbon fibre reinforced (PC-1), glass (PC-2), 10 each PTFE/graphite/carbon (PC-3) were studied under water lubricated, slow speed sliding conditions. Tribological tests carried out on Pin-on-Disc setup 17-4 PH stainless steel was used as counterface material. Test conditions were; 3, 6, 12 MPa contact pressures (P) 0.05, 0.005 m/s speeds (V). Natural glass-fibres composite...

Additive manufacturing (AM) has revolutionised the production of metal components, opening up possibility designing and producing parts previously unattainable with traditional techniques. Nevertheless, concerns remain regarding these AM-produced parts' long-term durability reliability. Several studies have shown that material degradation (corrosion) ranks among foremost factors responsible for constraining performance parts. It is well-established corrosion undermines functionality a...

In this study, the effect of increasing exposure time on microstructures, porosity, mechanical properties and corrosion behavior selective laser melted sample Al-Si10-Mg powder was investigated. The samples were processed at same power (375 W) scan speed (2000 mm/s), but with time. Exposure equal to 40, 50 60 µs applied. features analyzed show that time, greater efficiency heat input obtained, a larger size melt pool Si particles lower porosity. Specifically, highest showed an increase 19%...

Fast responding linear servo-hydraulic actuators with precise motion control are required in applications like seismic shake table and material testing for qualification of components to be used nuclear reactors. The achievable bandwidth a actuator position mode is improved by adding velocity feedback it. A fifth order state space model the servo hydraulic was derived validated experiments. step response frequency simple proportional simulated compared using this model. This paper...

The study focuses on stress and strain evaluation of composite resin material with the reinforcement clay in glass-reinforced epoxy (GREC). measurement used DIC technique. tensile test specimens were prepared from laminate sheets as per ASTM D638 standard. influence nano weight percentage such 2.5%, 3.5%, 4.5% during preparation GREC is studied article. fibre orientation angles are 90°, volume 45%. Hand lay-up methods to prepare material. samples tested standardised procedures. specimen...

A 5 Ton 6 DOF shake table is being indigenously developed in BARC for the seismic qualification of different equipment and structures to be used nuclear reactors.

Great advances have emerged in recent years around additive manufacturing techniques, with an increasing number of different materials (polymers, ceramics, metals). However, metal part has always been one the most demanded engineering. That is due to its ability create final functional parts good mechanical properties. One widely used technique Selective Laser Melting (SLM). The SLM process uses a laser power source selectively melt powder layer by layer. Typically, this requires...

In this study, the effect of increasing exposure time on microstructures, defectiveness, mechanical properties and corrosion behavior selective laser melted sample Al-Si10-Mg powder have been investigated. The were processed at same power (375 W) scan speed (2000 mm/s) but with time. Exposure equal to 40, 50 60 µs was applied. features analyzed samples show that a better efficiency heat input has obtained larger size melting pool Si particles lower defectiveness. Moreover, being coarser...