This investigation used a CNC lathe to perform plain turning on AA2014. Because of its light weight-to-density ratio, AA2014 finds applications in many areas. Taguchi’s philosophy-based design of experiment has been considered to run the experiment. The machining parameters, spindle speed (N), tool feed (F), and depth of cut (D), were selected to explore the machining outcomes. The machining performances were measured in terms of material removal rate (MRR), and surface roughness (RA) was measured and analyzed as a response. Thereafter, the proposed hybrid optimization module combines principal component analysis (PCA) and an improved grey wolf optimizer (I-GWO) for the multi-optimization feature. The principal components combined with weighted principal component analysis (WPCA) were used to calculate the overall quality index, denoted as the multi-response performance index (MRPI). Thereafter, this MRPI was used to find ANOVA and regression. The ANOVA revealed that spindle speed significantly impacts the responses. The I-GWO algorithm used regression to determine an optimal input parameter setting for the multi-objective optimized responses. Finally, it was found that the optimized solutions obtained by I-GWO for N, F, and D were 1783 rpm, 60 µ/rev, and 0.8 mm, respectively. The proposed hybrid technique can generate superior solutions in very minimal computational time. Notably, the outcomes obtained from new instances exhibit potential, purposefulness, and efficacy. This result was highly recommended to be practically applied in the manufacturing industry with various materials.

In this work, hybrid nanocomposites were successfully fabricated using a stir casting machine setup with a weight of 3

The current work focuses on using rectangular inserts with water as the working fluid to investigate heat transfer experimentally and numerically in a horizontal circular tube [10]. The study considers variations in the number of rectangular slots within the same strip. The tube has dimensions of 0.0266 m diameter. Twisted tapes, featuring rectangular cuts, are constructed from a 3 mm thick Stainless-steel strip with a length of 1035 mm. For experimentation, two different types of rectangular inserts were considered: one with nine cuts and the other with eighteen cuts. The dimensions of the cuts were as follows: length of 1000 mm, width of 13 mm, depth of cut 8 mm, and thickness 3 mm. The heat flux applied to the horizontal tube was steady and uniform. The range of the Reynolds number was 9,000–19,000. A plain tube without an insert was used to compare the results. The horizontal tube along with rectangular insert was modelled in Ansys Fluent software with fine meshing and analysed. Initially, CFD analysis was done for plain tube with and without insert, and results have been verified by comparison with experimental values. A comprehensive comparison is established, evaluating different heat transfer parameters, including convective heat transfer coefficient (h), heat transfer rate (q), and Nusselt number (Nu).

Creating favorable climatic conditions for plant cultivation in growing facilities is directly linked to the stable operation of the heating system, especially during the winter months. Consequently, predicting the thermal regime of a space in the event of an emergency heating system shutdown is an extremely important task for the agricultural sector. Research object: cultivation facilities designed for year-round plant growth. Research subject: patterns of internal air temperature changes (both dimensional and dimensionless) during an emergency heating system shutdown. Research objective: to predict the thermal regime of the cultivation facility following an emergency shutdown of the heating system. Research methods: theory of regular thermal regimes, according to which the temperature field at all points of the cooled body (in this case, the heating system) changes uniformly, following an exponential law; computer-based software calculations. Research results: the internal air temperature in the industrial greenhouse will reach its critical value of 8 ℃ approximately 1 hour and 15 minutes after the heating system is turned off. The duration of the internal air temperature decrease from its initial value to the conditionally critical value of 8 ℃ is minimally affected by the total thermal losses and, on average, increases by approximately 0.2 hours for every 0.1 m²⋅K/W of the thermal resistance of the enclosure. Thus, the cultivation facility, as a construction object with relatively low levels of thermal protection, should be equipped with a heating system that meets higher reliability standards.

Newly prepared Nickel alloy (Nimonic80A As Per ASTM B637 Alloy-N07080) using powder metallurgy is considered in this investigation. In Conventional machining, Nickel alloys produce higher tool wear rate , poor surface Finish, but this can be reduced by Electrical Discharge Machining (EDM) method. Nickel alloy(Nimonic80Aas per ASTM B637 Alloy-N07080) presently used in wide variety of applications such as Automobiles, Aerospace industries, because of their high strength to temperature ratio. In this project, Nickel alloy (Nimonic80A as per ASTM B637 Alloy-N07080) is taken with different types of EDM Properties. Before that Chemical characteristics in addition machinelike possessions as well as to a degree Tensile test,Charpy test are administered on for judgment substance moreover severity of the material plus from that timeforward we acted EDM process by utilizing of TAGUCHI procedure. Results of tests are resolved to select high quality surface finish moreover fastest process for material request.

The current engineering market is choosing composite materials over traditional materials inspired by the superior properties exhibited by composite materials, they are made up of a combination of materials with distant chemical and physical properties. The utilization of glass fiber composites is very extensive in the fields of aircraft and automobile industries most glass fibers are silica based and contain a host of other oxides of sodium iron, calcium, etc. natural fiber reinforced composites are getting progressively paramount because of low-cost and high specific characteristics fiber. The strength of the weight fraction of these composites is huge and vast. The present work aims at finding out the effects on the mechanical properties of composites due to the addition of silicon dioxide hybrid filler. The tensile and flexural tests are carried out on a universal testing machine (UTE-10), an impact test is done on the impact testing machine, and results were obtained.

A heat pipe is a form of heat exchanger that is used to transmit heat from one end to another end. By incorporating an evaporation-condensation system cycle, a Tapered heat pipe can transport heat by capillary action. Heat pipe is comprised of three segments: Adiabatic, Evaporator, and Condenser. Condenser section (D) diameter is bigger than evaporator section (d) diameter in a tapered heat pipe design, allowing for an increase in vapor volume. The investigation deals with the design and CFD analysis of Tapered heat pipe will be performed. From the existing experimental data, the numerical analysis on tapered heat pipe is performed. In this numerical analysis the different D/d ratios are considered i.e., 1,2,3 and 4. Heat input values considered are 20 Watt and 50 Watt for all the D/d ratios. On investigating the tapered heat pipe for different D/d ratios we observed approximately 12% variation between existing experimental results and numerical results. A large variation in heat transfer coefficient in higher D/d ratios at higher temperatures are observed. At lower temperatures the variation of heat transfer coefficient along the D/d ratios is neglectable. These higher heat transfer coefficients of the tapered heat pipe are best suitable for cooling electrical components such as CPUs, circuit boards and transistors. In the present world of electric vehicles, the tapered heat pipe can also be used battery thermal management systems.

Abrasive powder-mixed electrode-coated electrical discharge machining (APMEC-EDM) is a hybrid manufacturing process that involves using a abrasive powder mixed dielectric fluid and coated electrodes and combining benefits of both mechanical and thermal interactions. Present study aims to use a new performance assessment technique, gray relational analysis (GRA), to assess the influence of optimizing the APMEC-EDM performance on Nimonic80A Superalloy. Here, five control factors are considered as machining parameters: pulse current (A), pulse on-time (T on ), pulse off-time (T off ), Inter Electrode gap (mm), and aluminum powder concentration (g/L). The GRA L27 Orthogonal Array DOE can determine best parameters for multiple responses. GRA is employed to acquire a single performance index, and gray correlational class is used to optimize the APMEC-EDM process using a gray correlation coefficient with a lower tool wear rate, radial overcut, and higher material removal rate. The multi-objective optimization optimum values are Current at 15 A, Inter Electrode Gap at 2 mm, and Powder concentration in dielectric at 9 g/l, T on at 300 μs, and T off at 90 μs.

Centrifugal pumps are mostly used in different fields like industries, agriculture and domestic applications. Objective of this paper is to give a critical review of CFD analysis of centrifugal pump along with future scope for further improvement of flow efficiency. Computational Fluid Dynamics is the most used tool for simulation and analysis. 3-D numerical CFD tool is used for simulation of the flow field characteristics inside the pump machinery. CFD for centrifugal pump is used to solve numerical simulation problems working as a tool for getting performance prediction of modelled design at different conditions, and can derive information and study of pump performance on the system, Study of pressure contours, velocity contours, flow streamlines, cavitation analysis, analysis of interaction effects in different components, prediction of axial thrust etc., is also be studied by CFD techniques. Simulation makes it possible to visualize the flow condition inside a centrifugal pump. The present paper describes the head, power, efficiency and to evaluate the pump performance using the ANSYS CFX-14, a computational fluid dynamics simulation tool.

Heat pipe is used to extract heat generated from a surface and applicable to cooling of the many components. Some of the main applications of heat pipes are space crafts, computer systems, permafrost cooling, heat exchangers and thermal storage sub systems. In this work, an experiment will be carried out with an indirect heat composite pipe located with different orientation, heat input and mass flow. Thermal resistance, heat transfer coefficient and thermal efficiency are determined, which are applicable for laptop cooling and solar heating. Heat input 25 to 150 watts, with orientation angles 0, 30, 45, 90 degrees, mass flow rate are 0.01kg/sec, 0.02kg/sec and 0.03kg/sec are considered.

Heat pipe is a heat transfer mechanism used for transmitting heat from one end to another end in many applications. It consists of three divisions of evaporator, adiabatic, condenser sections with length of evaporator and condenser being same. There are different structures of wick in a heat pipe. Grooved-screen wicked heat pipe can transfer heat using the evaporation–condensation process opposing gravity. The aim of this study is to perform numerical analysis of grooved-screen wicked heat pipe made up of copper with water as working liquid. The grooved screen wicked heat pipe for given dimensions is modelled in 3D CAD software SolidWorks (2020). ANSYS FLUENT was used to look into the thermal efficiency of the heat pipe varies with heat inputs like 108 W, 145 W, 176 W and 201 W. The SIMPLEC method is chosen for solving the Navier stokes equations. The influence of heat pipe processing parameters are as follows: coolant, mass flow rate, heat input for grooved screen wicked heat pipe in the temperature, volume fraction and pressure are shown as contours.

Mechanical machining processes are being used in the utilization of cutting fluids, cutting fluids improves machining efficiency while also extending tool life by lowering temperature and friction during the machining process. The “flood flow system” is a typical coolant applicant technique in which a huge volume of liquid/coolant is continuously applied to the cutting field. This plan is incredibly inefficient first and foremost, a huge amount of cutting fluid is required secondly the cutting fluids unable to pass through the cutting zone to chip hardness. However, because of the unregulated use of fluid for cutting, there is a risk of economics and environment burden. As a result, a highly practical bridging technology known as “Minimum amount lubrication” was developed. Fluid for cutting/ coolant isdelivered to the cutting field at low rate in this technology. High pressure fluid is sprayed into the scraps is supplied to the cutting field at a very low rate in this technology. Fluid is sprays at high pressure into the cuttings zone, whichhas been combined with compressed air. The “Mist Flow System” is a method of administering cutting fluid/ coolant. This technology necessitates the use of a pneumatic spray nozzle. It is capable of atomizing the fluid with compressedair in the desired ratio and delivering a controlled or (regulated) spray.

This research focused on effect of surface treated kenaf fiber as reinforcement and cellulose as filler in epoxy composites for mechanical, impact toughness and drilling characteristics. The laminates for this study are prepared by hand lay-up process and characterization was performed by preparing suitable samples with respect to ASTM standards. The mechanical characterization results show an increase in tensile strength of around 60% for silane treated reinforcement composites, while as-received reinforced composites give only a 45% increment for composite designation EKC2 (Epoxy + kenaf + Cellulose). Similarly, flexural and interlaminar shear strength (ILSS) tests show enhanced properties by 53% and 18%, respectively with a maximum impact resistance of 7.22 J for silane treated reinforcements. Drilling characterization shows smooth drilling from top to bottom due to the silane treatment and there is no delamination occurs. Such improved, strengthened materials are used in various industrial and household applications as well as from its drilling characteristics, it is clear that these natural fiber composites can be used in the automotive sector and for structural uses.

In the present scenario of cutthroat competition in automobile industry, the importance for sleek and efficient models of automobiles with aesthetics and passenger comfort is paramount. In addition to the comforts like air conditioning and spaciousness etc., the ‘suspension’ is also significant in the selection of an automobile. The main focus of this paper is on weight reduction by replacing conventional spring steels with composite materials. A successful attempt has been made at Gokaraju Rangaraju Institute of Engineering and Technology, Hyderabad laboratories to fabricate the composite leaf spring, which is having equivalent properties of Maruti800 car leaf spring. The transverse failures in steel leaf springs lead to rear axle dislocation. This problem could be successfully eliminated with composite leaf springs since the general failure in unidirectional reinforcement composites is in longitudinal direction. This paper suggests the design improvements in this direction.

Machining is the most fundamental process in manufacturing industry. The heat generated on the working surface of the tool during machining is critical to determining the dimensional accuracy and surface quality of the workpiece. Conventional cutting fluids are hazardous to the health of workers and cause environmental pollution. This paper focuses on the effect of vegetable oil-based nanofluid on the machining performance in turning of EN19 steel through Minimum Quantity Lubrication (MQL). Canola oil is used as a base lubricant with various inclusions of boric acid powder nanoparticles. Machining parameters such as tool temperature and cutting forces are measured during machining. After processing, the surface roughness of the part is measured. The change in the temperature of the cutting tool and the roughness of the processed surface, depending on the cutting speed and feed, is studied at various percentages of suspensions of nano boric acid in canola oil. From the results of analysis it is found that cutting force, tool temperature and surface roughness decreased with increasing percentage of boric acid nanoparticles.

The utilization of carbon and glass fiber composites is very extensive in the fields of aviation and automobiles. The strength to weight fraction of these composites is immense. Even though, the modern applications require a lot of improvement in strength. The addition of Nano fillers had brought about significant changes in mechanical properties of the composites. The present work aims at finding out the effects on mechanical properties of composites due to the addition of titanium oxide 10% + silicon dioxide 10% hybrid filler. Hand layup process is used for the fabrication of tensile and flexural test specimens which are prepared as per the ASTM standards. The tensile test specimen is D-638 type-iv and the flexural specimen is D-790. Epoxy is used as resin and forms the matrix whereas the carbon and glass fibers act as reinforcement. The comparison is made between the specimens with and without hybrid filler. Two specimens of each type are prepared to have repeatability. The tensile and flexural tests are carried on universal testing machine (UTE-10) and results were obtained. The results showed a significant improvement in tensile and flexural strengths of carbon composites and only flexural strength in glass fibers with hybrid filler.

Transient thermal analysis of a screen mesh wick heat pipe is performed with a screen mesh numbers 60 and 100 using de-ionized water as working fluid, which is applicable in electronics cooling. Based on evaporation and condensation phenomenon heat pipe is operating. Experiments are conducted (ranging from 20Watts-160Watts) with different inclination angles (15,30,60,90) for calculation of thermal resistance(Rth) and heat transfer coefficient (h), at different mass flow rates and heat inputs. Computational transient thermal analysis is done for the same heat inputs using ANSYS 16.0. It is observed that thermal resistance decreases with increase in heat input [maximum at 0.042(degrees C//W), minimum at 0.023 (degrees C/W)] because fluid molecular bonding decreases with increase in heat input. Heat transfer coefficient values are maximum at 8800 (W/m2K) for transient thermal analysis and 8500 (W/m2K) for experimental. The Heat transfer coefficient is more in thermal analysis when compared to experimental results because heat loss is less in ANSYS and more in practical. At 60 W of heat input the maximum Heat transfer coefficient is found. (c) 2019 Elsevier Ltd. Selection and Peer-review under responsibility of the scientific committee of the International Mechanical Engineering Congress 2019: Materials Science.