bluuebunny/crossref_metadata_2025_split huggingface dataset:
Experimental investigation on nucleate pool boiling heat transfer enhancement for nano-structured copper oxide coated heating surface
Authors: Patel G , Gajghate S S , Pal A , Nath U , Bhaumik S , Das S 
Published: August 2019

Abstract
The present paper is based on experimental studies of augmentation of pool boiling heat transfer characteristics of unlike surfaces using water as a working fluid at atmospheric pressure. The test surfaces for the experiments include untreated, treated, copper oxide (CuO) thin film coated copper heating surfaces having coating thickness of 200 nm and 400 nm. The thin film coating is fabricated by sol-gel spin coating technique. The characterization of surfaces is done by considering wettability, surface roughness and topography study by the sessile droplet method, optical surface profile meter and X-ray diffraction [XRD]. The experiment is conducted in a closed boiling chamber and heat flux varied from 526.3 kW/m2 to 2546.689 kW/m2. The augmentation of heat transfer coefficients is found more than 40.60% of the higher thickness of copper oxide thin film coated copper heating surfaces. This is happened due to enhanced wettability, roughness and increase in active nucleation site density.
Impact behavior of pine needle fiber/pistachio shell filler based epoxy composite
Authors: Gairola Sandeep , Gairola Somit , Sharma Hitesh , Rakesh Pawan Kumar 
Published: August 2019

Abstract
Natural filler/fiber based composites are material focusing on the use of natural reinforcement material for fabrication process. In present research two different composites are developed using (i) pine needle fiber and epoxy (ii) pistachio shell filler and epoxy. Impact strength of developed composites is studied which shows that with addition of pistachio shell filler and pine needle fibers in composites, there is increase in impact strength as compared to neat epoxy sample. In addition, hybrid composite with natural filler and pine needle fiber has shown the highest impact strength of 23.33 kJ/m2. Investigating samples further in different conditions (petrol, kerosene, water) for impact strength, research shows that there is substantial decrease in strength in comparison to the samples subjected to ambient conditions.
A study on microwave susceptor material for hybrid heating
Authors: Bhoi Neeraj Kumar , Singh Harpreet , Pratap Saurabh 
Published: August 2019

Abstract
Efficient use of available resources at controlled and potential manner required a systematic approach for the technological advancement and creating product solutions. The proper choice of susceptor material for the desired heating rate is a prime concern for the effective utilization of microwave radiation and lower down the energy requirement. The present paper presents a comparative analysis of three different susceptor materials namely graphite boat, charcoal, and silicon carbide for the use in microwave hybrid heating (MHH). These susceptor materials are tested experimentally with 900W and 2.45GHz electromagnetic frequency to highlight the key role of a hybrid mode during microwave processing. The results claimed that the maximum temperature achieved in case of graphite boat is 350 0C with 70 minutes of exposure. However, in the case of charcoal and silicon carbide, the maximum achieved temperature is 410 0C and 255 0C respectively at duration of 10 minutes.
Crashworthiness of automobile made of HDPE/kenaf and HDPE/MWCNT polymer composites
Authors: Pundhir Nayan , Pathak Himanshu , Zafar Sunny 
Published: August 2019

Abstract
The present work deals with the crashworthiness of high-density polyethylene/kenaf and high-density polyethylene/multi-walled carbon nanotube polymer composites. The purpose of using polymer composites for the crashworthiness is their high specific energy absorption due to the low weight of the polymer composites. The various mechanical properties (Young’s modulus, tensile yield strength, and ultimate tensile strength) of the stated polymer composites have been predicted by a uniaxial tensile test. Further, these properties have been used as the input for the crash simulation. A widely known finite element method (FEM) package ANSYS has been used for the crashworthiness of the automobile. In the present study, HDPE/kenaf and HDPE/MWCNT polymer composites with 20 wt. % of reinforcement have been considered. The CAD geometry of automobile structure is modelled in SolidWorks and further analyze in ANSYS-explicit dynamics. Numerical results are presented in the form of equivalent (von Mises) stress and directional deformation of the automobile’s body panel with respect to time. It has been observed that the body panel made of HDPE/kenaf polymer composite induces relatively higher magnitude of equivalent (von Mises) stress and lower directional deformation by 42.85 %.
The modal analysis of a double disc flexible rotor-bearing system with isotropic stiffness and damping properties
Authors: Bhuyan Abhigyan , Verma Rajiv 
Published: August 2019

Abstract
This paper shows the analysis of the modal characteristics of a flexible rotor system having two non-identical discs mounted on it using the finite element method. It uses the Timoshenko beam elements theory including shear deformation, rotary bending effects and gyroscopic effects. The bearing is considered to be isotropic having translational stiffness and damping values constant in x and y directions. There are no cross-coupling terms. The conduct of the framework is investigated by reference to natural frequency maps and mode shape diagrams. A comparative study has been conducted between this system having isotropic bearings of stiffness and damping properties and the one in which the bearings have only stiffness keeping other parameters same. The gyroscopic effect is seen to be prominent at higher rotating speeds for both the cases which cause the splitting of frequency pairs into forward and backward whirls. The Campbell diagram is computed which helps in finding the critical speeds associated with each pair of diverging natural frequencies. The bearing system represented by stiffness and damping properties shows a comparatively better control over the critical speed range.
Experimental Investigation on Large Scale Diesel Pool Fire in a Vertically Ventilated Compartment
Authors: Tiwari M K , Gupta A , Kumar R , Sharma P K 
Published: August 2019

Abstract
An experiment was performed for pool diameter 1 m located at the center of a compartment which has a size of 4 m x 4 m x 4 m (l x w x h). The door size was 2 m x 1 m (Height x Width) which was fully open during the experiment. The purpose of experiment was to obtain a data of burning characteristic of diesel fuel within the compartment. The large scale heat release calorimeter measure the heat release rate (HRR) and concentration of O2, CO2& CO. The thermocouple arrays are installed at different places to measure the ceiling temperatures; centerline temperatures above the pool, doorway temperatures.The maximum HRR has found 1 MW and during steady period average hot gas layer temperature reaches to 400 0C. The average mass burning rate was maintained to 0.037 kg/m2s, which was compared with other previous conducted experiments for diesel pool fire.
Multi-scale modeling and simulation of natural fiber reinforced composites (Bio-composites)
Authors: Jagath Narayana K , Burela Ramesh Gupta 
Published: August 2019

AbstractThis work presents the numerical analysis of natural fiber reinforced composites (from renewable sources), to evaluate the mechanical behavior of Bio-composites and elucidated the role of micro-mechanical analytical models (Rule of Mixtures and Halpin-Tsai models). Specifically, this study is carried out to perform the Multi-scale modeling and simulation of Biocomposite that constitute of sisal fiber reinforcement and Epoxidized Soybean-Oil (ESO) based matrix. In general, it is difficult to predict the effective properties of natural fiber reinforced composites due to its heterogeneous properties. The Representative Volume Element (RVE) model is capable to estimate the effective properties of Bio-composites. Therefore, RVE model is designed and analyzed based on micro-mechanics by taking the individual properties of fiber and matrix as an input. As a result, the effective properties of Bio-composite can be obtained. Subsequently, a 3-D model of Bio-composite laminated plate behavior is analyzed based on macro-mechanics by taking the effective properties of Bio-composite obtained from micro-mechanical analysis. The obtained effective properties of Bio-composite are validated with the theoretical (Rule of Mixtures) results. The micro-mechanical analysis is carried out using the Digimat (Multi-scale modeling and simulation tool) and macro-mechanical analysis is performed using Ansys software.
Impact response of basalt composite pipe using filament winding
Authors: ManojPrabhakar M. , Rajini N. , Mayandi K. , Subash K. , Subramanian S. , RamaBala Seelan S. Vignesh , Ayrilmis Nadir 
Published: August 2019

Abstract
The aim of this work was to study the energy absorption of composite pipesunder different level of low velocity impact test. The basalt fiber is used for making filament wound composite pipe. Because it offer more strength and a reduction in density when compared to existing fibres such as glass fibres, carbon fibre and etc. Moreover the fibre has higher breaking strength compare to other fibre. The basalt composite pipe is manufactured under filament winding process with the help of epoxy resin and undergoesimpact tests. The pipe is manufactured with 100mm diameter, 6mm thickness and filament winding angle is set as 55degree. In this pipes are tested under drop weight low velocity impact machine and strength of the pipe was examined in different energy level. Impact force, displacement, energy absorption were measured.
Investigation the effect of electroplating and filler material on the tensile properties of wollastonite reinforced ABS composites
Authors: Prapul Chandra A C , Byregowda H V , Gangadhar T G , Angadi Gangadhar , Krishna M 
Published: August 2019

AbstractThis paper deals with effects of wt. % of wollastonite (CaSiO3) filler in acrylonitrile-butadiene-styrene (ABS) polymers prepared by injection moulding process and electroplating on the specimens. The influence of filler was examined by the different wt. % (3, 5 and 7) of wollastonite (CaSiO3) in ABS. Filler was mixed with ABS polymer by twin screw extrusion process and pelletized. The composite pellets are used for the injection moulding process and specimens are prepared as per ASTM. The specimens are coated with nickel, copper and chromium with a thickness of 0.8 microns each by electroplating technique. The dispersion of fillers are studied by SEM. The improvements in tensile properties of 5 wt. % of filler in ABS and same wt. % of filler with electroplating components were 66% and 87 % respectively when compared with pure ABS.
Friction and wear characterization of graphite/Polytetrafluoroethylene composites against stainless steel: A comparative investigation under different environments
Authors: Khan M Jebran , Wani M F , Gupta Rajat 
Published: August 2019

AbstractThe friction and wear characteristics of Polytetrafluoroethylene composites filled with 15 wt.% and 25 wt.% graphite were investigated against stainless steel under dry sliding and in aqueous environments. A pin on disc tribometer was employed for experimentation at room temperature. The friction performance of 15 wt.% Graphite/Polytetrafluoroethylene proved better than 25 wt.% Graphite/Polytetrafluoroethylene under all conditions, however the wear performance was better for 25 wt. % Graphite/Polytetrafluoroethylene. Moreover, the tribological behaviour of all the composites enhanced in natural sea water environment. An average COF (0.02) and wear rate (1.27 × 10-5mm3/Nm) were attained for 15 wt. % Graphite/Polytetrafluoroethylene in sea water; and an average COF (0.0293) and wear rate (5.2 × 10-6mm3/Nm) were obtained for 25 wt. % Graphite/Polytetrafluoroethylene in sea water. From SEM analysis it was revealed that the better tribological performance of graphite/Polytetrafluoroethylene in sea water is due to the formation of lubricious films on the surfaces in sea water.
Tribological Characterization of Iron Based Ceramic Reinforced Self- lubricating Material
Authors: Parveez Bisma , Wani M.F. , Ali Md.firdos , Banday Summera , Junaid Mir M. , Mushtaq S. 
Published: August 2019

Abstract
In this paper, the effect of ZrO2 reinforcement and MoS2 as solid lubricant on tribological properties of iron-copper-tin composite for plain bearing application have been investigated. This paper includes two studies, one in which wt% of MoS2 is varied keeping wt% of ZrO2 constant and in another wt% of ZrO2 is varied keeping wt% of MoS2 constant to see the effect of ZrO2 as reinforcement and MoS2 as a solid lubricant for improving tribological properties of sintered Fe-Cu-Sn material. The material was prepared by sintering at temperature of 1150° C. The tribological properties of developed materials were analysed by ball on disk test.Least value of COF 0.0421 is shown by sample with 2 wt.% of MoS2 and 2 wt.% of ZrO2. Least wear rate of 0.4581x10-4 mm\Nm for sample with 2 wt.% of MoS2 and 2 wt.% ZrO2.Characterization of worn surfaces revealed abrasive and adhesive wear including third body abrasive wear, delamination and micro-ploughing in reinforced composites. The addition of MoS2 has improved tribological properties, whereas ZrO2 addition not only improved tribological properties, but also improved strength and hardnessof the composite. Maximum hardness value 208HV (701.4MPa) is shown by the composite with 2 wt.% of MoS2 and 2 wt. % of ZrO2. The findings show that the developed material could be used for antifriction andantiwear plain bearing applications.
3-E analyses of a natural gas fired multi-generation plant with back pressure steam turbine
Authors: Mondal P , Samanta S 
Published: August 2019

Abstract
Energetic, exergetic and environmental (3-E) analyses of a natural gas fired multigeneration (NGFMG) plant is carried out in this study. The plant is consisting of a topping gas turbine (GT) block with fixed 30 MWe output, bottoming back pressure steam turbine (ST) block with variable electrical output and utility hot water generation block with variable generation capacity. Variation of topping cycle pressure ratio (rp=2-18) and gas turbine inlet temperature (TIT=750-850 °C) as plant operational parameters on the 3-E performance of the plant of are reported here. Base case performance (at rp=4 & TIT=800°C) of the plant shows that the plant is about 33% electrically efficient at base case with fuel energy savings ratio (FESR) value of 40 %. Electrical efficiency of the plant along with FESR increases with either increase in rp or in TIT. However ST output and hot water production rate decreases with increase in the value of plant operational parameters. Exergy analysis of the plant shows that maximum exergy destruction occurs at the combustion chamber. Exergy analysis also signifies that isentropic efficiency of the GT can also be a plant influencing parameter. From emission point of view it is observed that electrical specific CO2 emission is 0.6 kg/kWeh at base case. Specific CO2 emission rate gets lowered with either increase in rp or in TIT.
Modelling of MRR during Wire-EDM of Ballistic grade alloy using Artificial Neural Network Technique
Authors: Singh T , Kumar P , Misra J P 
Published: August 2019

Abstract
This research work presents an incorporated approach to modelling of WEDM of AA6063using Artificial Neural Network (ANN) technique. The experimental investigation has been carried out with four input variables namely pulse-on time (PON), pulse-off time (POFF), servo-voltage (VS) and peak-current (IP). Material removal rate are measured as response parameter. 3k full factorial design is used to design the experimental runs. It is apparent from this study that values anticipated by developed model are found closer to experimental results. Thus, it ensures appropriateness of model for prediction purpose and smart manufacturing. Machined surfaces are also examined by SEM to critically evaluate the process.The first section in your paper.
Effect of preheating and water-cooling on the wear properties of FS welded AA6082 joint
Authors: Verma S , Misra JP , Gupta M 
Published: August 2019

Abstract
This manuscript presents the effect of preheating and water-cooling on the wear properties of friction stir welded AA6082 joints. Experimentation has been carried out for varying preheating temperature and the temperature of water. After that, wear properties of FSW joints are evaluated using pin-on-disc apparatus. It is observed that FSW joints exhibit better wear properties than the parent metal owing to the recrystallization of nugget zone. Furthermore, it is evident that FSW joint obtained without preheating and water-cooling has better wear resistance property than the parent metal but this can be further enhanced by preheating and water-cooling. The minimum coefficient of friction (0.27) is obtained for the joint fabricated at 1000C preheating temperature.
Numerical study on swirl flow analysis of a modified dump combustor for different vane angles
Authors: Mandal Chandan , Ganguly Aritra , Chakarbarti Somnath 
Published: August 2019

Abstract
A numerical study has been carried out on flow characteristics for turbulent swirl flow in a modified dump combustor with central restriction of vertical ellipsoidal (VE) dome shape. Here, four different swirlers with different vane angle (15°, 30°, 45° and 60°) have been considered. In this study, the flow is considered to be highly turbulent and accordingly, the value of Reynolds number is chosen as 1.2x105. The governing realizable k-ε model and Reynolds stress model (RSM) have been used to solve the turbulent parameters for the considered cases. The relevant governing differential equations for the conservation of mass and momentum have been solved by using SIMPLE algorithm with the commercial CFD code ANSYS Fluent 16.0. From the study, it is observed that width and strength value of recirculating zone increase with the increase of vane angle of swirler up to a certain value. Variation of axial and tangential velocities with radial distance at different locations, have been studied in details for considered four swirlers. Under turbulent swirl flow condition, 45° vane angle swirler is suitable to create both primary re-circulation zone before the restriction and secondary recirculation zone after the restriction.
A study on effect of tool tip temperature on wear of ceramic cutting tools
Authors: Qadri S I A , Harmain G A , Wani M F 
Published: August 2019

Abstract
This work reflects the effects of tool tip temperature on flank wear of ceramic cutting tools during the turning of nickel alloy 718 (HRC 45). Two types of ceramic cutting inserts were used Al oxide (620) and mixed oxide (6050), during the turning operation under dry environmental conditions at various cutting speeds of 145 m/min, 230 m/min and 360 m/min respectively. The Al oxide inserts showed better results at cutting speed of 145 m/min and 230 m/min than mixed oxide. The worn out edges of inserts and micro structural properties were obtained by using SEM and tool makers microscope. The results were obtained after analyzing each test. The wear resistance of cutting inserts were affected by the tool tip temperature at the cutting zone.
Optimization of process parameters during machining of Ti6Al7Nb by grey relational analysis based on Taguchi
Authors: Gupta Anjali , Kumar Rajesh , Kumar Harmesh , Garg Harry 
Published: August 2019

Abstract
This paper presents the optimization of parameters considering multiple response characteristics during turning of Ti6Al7Nb under the Minimum Quantity Lubrication (MQL) conditions by Grey Relational Analysis (GRA) based on Taguchi. The parameters chosen in this study are type of cutting oil, flow rate of cutting fluid and cutting speed. Response characteristics selected to evaluate the machining performance are tool flank wear and surface roughness. Firstly, the experiments designed on Taguchi L9 orthogonal array (OA) are conducted and then grey relational analysis is used to optimize both the tool flank wear and surface roughness simultaneously. Further, Analysis of Variance (ANOVA) has been carried out to find significant process parameters. All the three process parameters are found significant and the most significant factor found is cutting oil with 66.37% contribution towards grey relational grade.
Development and comparison of tensile and compressive strength and percentage shrinkage of glass- jute hybrid fibre reinforced polymer composites
Authors: kumar Navin , Angra Surjit , Walia R S 
Published: August 2019

AbstractGlass-jute hybrid fibre reinforced polymer composites were developed by using pultrusion process. In order to carry out these experiments, an experimental setup for pultrusion process was developed. Reinforcement of natural jute fibre and glass fibre was done in the developed composites. Unsaturated polyester resin as matrix and coconut coir ash, carbon black and egg shell ash as filler were used. The variation in tensile strength of pultruded Hybrid FRP composites were observed due to variation in weight percentage of coconut coir ash, carbon black and eggshell ash as filler. Filler’s weight percentage was variable while weight percentage of unsaturated polyester resin as matrix and glass and jute as fibre reinforcement were fixed. Single filler with variable percentage was used in the development of composite specimens with fixed weight percentage of matrix and fibres. Total fifteen hybrid composite specimens (samples) were developed, out of which carbon black, coconut coir ash and egg shell ash fillers have five samples of each with their variable weight percentage. Maximum tensile strength was observed 76 MPa in hybrid composite specimen namely hybrid composite specimen with 9% carbon black filler and maximum compressive strength was observed 99.44 MPa in hybrid composite specimen with 15% Eggshell ash as filler.
Experimental Study of a Solar Oven based on Evacuated Tube Collector in Indian Climatic Conditions
Authors: Sharma Abhishek , Yadav Avadhesh 
Published: August 2019

Abstract
A solar oven system of evacuated tube collector using copper food tray was fabricated and experimental analysis was done to evaluate its performance. The experiments conducted on clear sunny days in the month of December in NIT Kurukshetra, Haryana. The maximum temperature obtained from the food tray was 84°C. Food items can be cooked, fry or bake with this solar oven. Potatoes were baked with this solar oven and kept warm for a time period of about 5 hours and water is heated up to 81°C within 1 hour. The testing of solar oven was carried with and without cooking load. Without any cooking load, the maximum temperature of food tray observed was 84°C. With cooking load, the maximum temperature observed was 81°C. In this solar oven, reflecting sheet is being used beneath the evacuated tube to increase the absorption rate of the evacuated tube. This paper gives experimental results from portable solar oven for water heating and baking potatoes.