bluuebunny/crossref_metadata_2025_split huggingface dataset:
Dynamic Analysis of Fixed-Fixed Beam Under Mechanical Shock Loads
Authors: Sharma G. , Mishra Abhishek , Selvaraj P. 
Published: December 2020

Abstract
Aerospace missions are very expensive and any carelessness may lead to mission failure. So, each component that should be installed in a launch vehicle and spacecraft essentially be designed and developed to ensure its reliability. In this paper, a beam made up of Al 6061 T6 material is modeled in the ANSYS 18.0 software and subject to a similar condition to the component of the launcher vehicle. Transient acceleration load having magnitude approximately equal to the amplitude of acceleration developed during pyrotechnic events is applied in X, Y and Z direction of the beam and response of the beam at different locations of the beam is calculated and based on the response acceleration time history a Shock Response Spectrum (SRS) is plotted for locations of interest on the beam. Furthermore, Response Spectrum Analysis is performed on the beam based on the SRS of pyroshock event, provided by the Laboratory for Electro-Optics Systems (LEOS), Indian Space Research Organization (ISRO).
Effect of Spindle Speed, Feed Rate and Cooling Medium on the Burr Structure of Aluminium through Milling
Authors: Sharma Aman , Dwivedi Vijay Kumar 
Published: December 2020

Abstract
The burr is formed during milling, when the tool exits the work piece in any machining operation. The burr formation on a milling machine with the use of end mill cutter with different speed and different cooling mediums like air, water, and cutting fluid are discusses. The tool used for the machining operation is an end mill cutter tool. This work is taken up to examine the effect of different speeds and different cooling mediums on burr formation in the milling operation of aluminium in a dry and wet atmosphere. Results are found on the exit edge of the work piece, found during the milling operation. This paper manages with the aspects that influence the formation of burr and type of burr formed while doing experiment. The parameters considered are, the maximum length of stroke, drive speed (step cone pulley), range of speed arrangement groove and the selection of a cooling medium. The drive speed of the milling machine was measuring by Tachometer in all drive stages. The pictures of produced burrs were taken with the support of a digital microscope and digital camera.
Effect of Two Stages Artificial Ageing on Microstructure and Mechanical Behavior of Lm 25 Aluminium Alloy
Authors: Bhaskara Raju VVS , Sevanam Sambi Reddy , Varadala Ananda Babu , Chitturi Suresh 
Published: December 2020

Abstract
In the present investigation the influence of two stages artificial ageing, 1st stage at 160°C followed by 2nd stage at 140°C on microstructure and mechanical properties of LM 25 alloy was studied. It is observed that the microstructure changed under the influence of two stages ageing. It is also observed that the decrease in ageing temperature in the second stage, increases mechanical properties of the alloy. The tensile strength of the alloy in single stage ageing at 160°C is studied and compared with two stages ageing.
Stabilization of Expansive Soil by using Jute Fiber
Authors: Lal Dharmesh , Reddy Pravalika , Kumar R. Sandeep , Rao V. Govardhan 
Published: December 2020

Abstract
The instability of structure lies mainly in the properties of soil under which it is constructed. For instance, if the soil is having weak engineering properties, there are chances of crack formation and settlement. One of the major problematic soils of this type are the Black cotton soils which are mainly classified as expansive soils. They are obviously a hindrance to the strength and stability of structures. The present study deals with the improvement of soil characteristics with the addition of Jute fiber sheet. A series of Triaxial and CBR tests were done on normal soil and Jute fiber reinforced one. The observed values indicate a significant contribution of strength improvement when fiber sheets were added.
A Review of Ultrasonic Assisted Electrolytic In-Process Dressing (UA-ELID)
Authors: Awati Dhanesh B , Chanmanwar Rahul M 
Published: December 2020

Abstract
This paper presents previous research work of researchers on electrolytic in-process dressing and its ultrasonic-assisted system variant. This paper also contains information about the ELID system and applications of ultrasonic-assisted ELID. This technique enables continuous dressing of wheels made using metallic bond in the grinding process itself while retaining sharp grits from the super abrasive wheels. An ultrasonic-assisted setup requires an ultrasonic power generator, piezoelectric transducer (PZT), horn assembly. An ultrasonic generator generates ultrasonic pulses, which are supplied to the piezoelectric transducer. The piezoelectric transducer then converts electrical energy to mechanical energy and vibrates either in longitudinal mode or in transverse mode. The horn system then amplifies these vibrations, and amplified vibration is supplied to the grinding tool. The relevance of research papers referred to regarding setup development of ultrasonic-assisted electrolytic in-process dressing, effect of process parameters and modeling of the ultrasonic-assisted ELID process is described in this paper.
Superhard Alloys: A Review of Empirical Modeling and Computational Strategies
Authors: Chandramouli Ch. , Venkatesh B. , Hussain M.Manzoor 
Published: December 2020

Abstract
Superhard alloys has gained major research interest in recent past as it represents an effort to create man made alloys with hardness on par with the hardest substance available to us i.e. a naturally occurring diamond. They are virtually incompressible solids with high electron density and high bond covalency. Present paper aims to review the empirical methods and computational techniques developed by employing them using published literature, in order to attain a better understanding of complexities involved in synthesis of such compounds as a first step towards developing a new superhard metallurgical composition with similar mechanical attributes.
Design Failure Mode and Effect Analysis – Case Study
Authors: Nadaf Adila R. , Chanmanwar Rahul M. 
Published: December 2020

Abstract
Design-Failure mode and effect analysis (D-FMEA) is very important tool used in industries to detect failure during design stage. D-FMEA is a technique to find out causes of failure and their effects on the performance of a system(parts) during design phase. In this paper, the D-FMEA of critical components of designed automatic tilting mechanism trolley is carried out. The critical components of automatic tilting mechanism trolley are identified and analyzed by the D-FMEA tool. This paper provides risk priority number of components of trolley. The component with higher risk priority number has higher chances of failure. The risk priority number of critical components is reduced by incorporating corrective actions. This paper provides probable causes of failure, effects of failure and corrective actions to be undertaken during design phase of Automatic tilting mechanism trolley. The D-FMEA tools helps in reducing accidents.
Optimization of Helical Coil Tube Heat Exchanger: A Systematic Review
Authors: Rafi Shaik , Sivarajan Dr.C. , Mallikarjun.Ch Dr. 
Published: December 2020

Abstract
Helical coil heat exchanger is used in the food industries, air cooling industries etc.., due to its advantage of structural compact and high heat transfer coefficient. Many existing researches have been carried to improve the heat transfer efficiency and pressure drop. Mathematical model of the heat exchanger has been used to validate the performance of the heat exchanger. This paper involves in review the researches related to the optimization of helical coil tube heat exchanger. Some of the optimization methods such as Taguchi method, Genetic Algorithm (GA) and Multi-Objective Genetic Algorithm (MOGA) is used. From the analysis, Artificial Neural Network (ANN) and GA method has efficient performance in modelling and optimization of heat exchanger. Although, some methods involved in economic optimization of heat exchanger and these method has lower performance.
An Approach to Develop a Sustainable Preference Index for Self Compacting Concrete
Authors: Vanga Renuka 
Published: December 2020

Abstract
In construction industry, selecting a right material from the various alternatives is a critical task in contributing to promote sustainability. For evaluating performance of the material different conflicting attributes are considered which is very complex to make a decision. Focusing on that point, there is a necessity to implement an effective MCDM (Multi-Criteria Decision Making) technique in the building construction which helps the decision makers to choose the feasible sustainable material from the alternatives. The present study explores about the application of Preference Selection Index Method to develop an approach in selecting the optimum Supplementary Cementitious Materials which is called as Sustainable Preference Index (SPI). The foremost concern in the study is to optimize the use of SCM’s as a substitute for cement in Self Compacting Concrete (SCC) to assess sustainable performance by considering technical, environment and ecological traits. To illustrate an approach to develop a Sustainable Preference Index a case study has been considered by varying mineral admixtures such as Fly Ash and GGBS by 10%, 20%, 30%, 40% replacement of the mass of cement in SCC. From different available SCC mixes, the possible alternate in Self Compacting Concrete can be identified based on Sustainable Preference Index value which indicates sustainable performance. Among the FA and GGBS based Self Compacting Concrete mixes, 40GGBS-SCC has attained the highest Sustainable Preference Index (SPI) value. For 40GGBS-SCC the SPI value obtained is 0.891 whereas for 100OPC-SCC it is 0.740. From the SPI values attained, it can be concluded that 40GGBS-SCC is 20.4% more sustainable than the 100OPC-SCC.
An Emphasis of Geopolymer Concrete with Single Activator and Conventional Concrete with Recycled Aggregate and Data Analyzing using Artificial Neural Network
Authors: Rao G. Mallikarjuna , Kumar K. Satheesh , Poloju Kiran Kumar , Srinivasu Kota 
Published: December 2020

Abstract
The emphasis of concrete in the advancement of construction industry is essential. Due to the rapid increase in the development of infrastructure, there is a considerable demand for the construction materials. The construction materials drained gradually due to continue use in construction and there is a degree for the advancement of these development materials. Therefore, in this context, a rapid increase in the price of conventional construction materials and various governments have put restrictions on fine aggregates. In this circumstance, the investigation attempted to determine the appropriateness of the substitute materials in concrete development because these materials are eas ily available at very low cost as compared to conventional fine and coarse aggregates. The effect of recycled aggregates on the strength of conventional concrete and Geo-polymer concrete was studied. The natural aggregates are replaced by the crushed aggregates of intervals of 10%,20%, 30%, 40 %, and 50% in both geo-polymer and conventional concrete. The different strengths of 20MPa, 40MPa, and 60MPa werestudied in this research work. The conventional concrete cubes were cured in normal water and geopolymer concrete cubes cured in ambient room temperature. The coarse aggregates used were of size 20mm and 10mm sieved and the recycled aggregates contains a cement mortar attached to it. The outcomes show that a slight decline in the strength of conventional concrete and high strength found with 30% substitution of coarse aggregate and eventually the prediction of data was analyzed using Artificial Neural Network
Experimental Studies of Stellite-6 Hardfaced Layer on Ferrous Materials by Tig Surfacing Process
Authors: Chandra C Dinesh , Rushikesh B , Numan Mohammed , Venkatesh B 
Published: December 2020

Abstract
Hardfacing is the cheapest technique and it is the deposition of coatings of hard, wear resistant materials on a worn or new component that is subjected to wear, impact, high temperature, and oxidation. Weld hard facing is used to deposit thick layers of hard material by Tungsten Inert Gas (TIG) welding technique. This layer acts as a sacrificial layer at the point of impact and safeguards the base metal from wear out and corrosion. It is also used to fill the worn out part of a component there by increasing its durability and lifetime. A thick layer of stellite-6 of width 1mm is deposited on the base metals (i.e mild steel and EN-8) varying the weld currents as 120A, 140A, 160A. Vickers Hardness testing machine is used to measure the hardness of the hardfaced components and the variation of the hardness with varying weld current for both substrates. The specimens are subjected to oxidation at elevated temperature of 973K by muffle furnace for 5, 10, 15 hours duration and to study the oxidation rate with respect to different processing currents. The microstructural analysis is performed using optical microscopy on hardfaced samples. The aim of the paper is to study the effect in rate of oxidation, hardness, and microstructure with respect to varying parameters in stellite-6 hardfacing on ferrous materials.
Blue and bluish-white colors from the luminescent ZrO2 and ZrO2: Al3+ films prepared by the USP method
Authors: Martínez-Martínez R , Juárez-López G , García-Hipólito M , Díaz J J Bautista , Carmona Téllez Salvador , Aguilar-Frutis Miguel A , Alarcón Flores Gilberto , Falcony C 
Published: December 2020

Abstract
ZrO2 and ZrO2: Al3+(× at.%) films were deposited by ultrasonic spray pyrolysis process. Luminescent films were produced from Oxychloride Zirconium Octahydrate and Aluminium Chloride Hexahydrate as precursors. Measurements of photo and cathodoluminescence were carried out doing variations on deposition temperature and doping concentration (× at.% Al3+ions). With the increase in substrate temperature, an overall growth of photo-cathodoluminescence intensities was perceived. Furthermore, these films presented luminescence concentration quenching with hight Al doping concentration. Chromaticity coordinates indicated blue emission from host lattice (ZrO2 films) and cold-white emissions from ZrO2: Al3+(× at.%) films. Closest CIE coordinates to the perfect white emission were x = 0.303, y = 0.337. XRD patterns, measured with variations of substrate temperature, showed tetragonal phase of nano-zirconium oxide films. In addition, surface morphology characteristics for studied films are presented.
An easy-to-fabricate source measure unit for real-time DC and time-varying characterization of multi-terminal semiconductor devices
Authors: Das Avishek 
Published: December 2020

Abstract
A versatile Arduino based source measure unit (ASMU) is fabricated for measuring both the DC and low-frequency AC electrical characteristics of multi-terminal semiconductor devices. The ASMU system is capable of bidirectional voltage sourcing and current measurement in all four quadrants. The system is programmed with the LabVIEW environment for real-time data acquisition. The voltage bias and current measurement range are observed to be ±4.65 V and ±14.6 mA with an optimum resolution of 5 mV and 7.8125 μA, respectively. Both the two- and three-terminal passive and active devices can be characterized without changing any circuit configuration. The electronic and optoelectronic current-voltage, current-time, and transistor’s input/output characteristics can be performed only by customizing the programming codes. The performance of the ASMU system is found to be highly comparable with commercial measurement systems. The experimental results suggest its potential application in characterizing semiconductor devices with maintaining adequate precision, cost-effectiveness, and low-power consumption.
Differentiable programming for online training of a neural artificial viscosity function within a staggered grid Lagrangian hydrodynamics scheme
Authors: Melland Pake , Albright Jason , Urban Nathan M 
Published: December 2020

Abstract
Lagrangian methods to solve the inviscid Euler equations produce numerical oscillations near shock waves. A common approach to reducing these oscillations is to add artificial viscosity (AV) to the discrete equations. The AV term acts as a dissipative mechanism that attenuates oscillations by smearing the shock across a finite number of computational cells. However, AV introduces several control parameters that are not determined by the underlying physical model, and hence, in practice are tuned to the characteristics of a given problem. We seek to improve the standard quadratic-linear AV form by replacing it with a learned neural function that reduces oscillations relative to exact solutions of the Euler equations, resulting in a hybrid numerical-neural hydrodynamic solver. Because AV is an artificial construct that exists solely to improve the numerical properties of a hydrodynamic code, there is no offline ‘viscosity data’ against which a neural network can be trained before inserting into a numerical simulation, thus requiring online training. We achieve this via differentiable programming, i.e. end-to-end backpropagation or adjoint solution through both the neural and differential equation code, using automatic differentiation of the hybrid code in the Julia programming language to calculate the necessary loss function gradients. A novel offline pre-training step accelerates training by initializing the neural network to the default numerical AV scheme, which can be learned rapidly by space-filling sampling over the AV input space. We find that online training over early time steps of simulation is sufficient to learn a neural AV function that reduces numerical oscillations in long-term hydrodynamic shock simulations. These results offer an early proof-of-principle that online differentiable training of hybrid numerical schemes with novel neural network components can improve certain performance aspects existing in purely numerical schemes.
Characterization and Quantitation of Personal Exposures to Epoxy Paints in Construction Using a Combination of Novel Personal Samplers and Analytical Techniques: CIP-10MI, Liquid Chromatography–Tandem Mass Spectrometry and Ion Chromatography
Authors: Xue Yalong , Bello Anila , Bello Dhimiter 
Published: December 2020

AbstractEpoxy resins are extremely versatile products that are widely used in construction for coatings, adhesives, primers, and sealers. Occupational exposures to epoxies cause allergic contact dermatitis, occupational asthma, hypersensitivity pneumonitis (epoxy-resin lung) and acute decline in lung function. Despite these health concerns, there is a striking paucity of quantitative exposure data to epoxy resins in construction. The lack of practical analytical methods and suitable personal samplers for monitoring of reactive two-component epoxide systems in real-world applications has been an unmet challenge for decades. Sampling and analysis methods for epoxies should be able to collect the paint aerosols efficiently, stop polymerization reactions at the time of sample collection, and subsequently provide detailed multispecies characterization of epoxides, as well as the total epoxide group (TEG) content of a sample, to properly document the chemical composition of exposures to epoxide paints.In this work, we present the development and application of two new complementary quantitative analytical methods—liquid chromatography–tandem mass spectrometry with online ultraviolet detection and ion chromatography (IC)—for multispecies characterization of raw products, as well as inhalation and skin exposures to epoxy formulations in real-world construction applications. A novel personal sampler, CIP-10MI, was used for personal sampling of airborne epoxies. We report for the first time the results of personal inhalation and potential skin exposures to individual monomers and oligomers of bisphenol A diglycidyl ether (BADGE), as well as TEG, during metal structure coatings in construction; compare analytical results of the two analytical methods; and provide recommendations for method selection in future field studies. High inhalation and potential skin exposures to epoxies point to the need for interventions to reduce exposures among painters in construction.
The impact of the COVID-19 pandemic upon patients, staff, and on the future practices of percutaneous coronary intervention
Authors: Banning Adrian P. , Sabate Manel , Valgimigli Marco 
Published: December 2020

AbstractThe COVID pandemic in 2020 had unpredictable consequences on the presentation and management of patients with ischaemic heart disease. Subsequent to these initial responses the impact of the initial pandemic can be reviewed and responses can be considered. It is clear that there are new opportunities for optimising patient management pathways and in particular enhanced use of information technology. Changes in attitudes towards health and perceived risk are evident within both the catheter lab teams and our patient cohorts. Summating both the intellectual and emotional experiences of the pandemic are essential to prepare for either a second wave of COVID 19 or any new pandemic threat in the future.
End-stage heart failure patients should be treated instantly despite a pandemic with all-time available technology to ensure best outcomes
Authors: Bories Marie-Cécile , Abi Akar Ramzi 
Published: December 2020

AbstractSince the earliest cases of coronavirus disease 2019 (COVID-19) infection were reported, our care delivery systems have been reorganized and challenged in unprecedent ways, specifically the cardiovascular community. COVID-19 poses a challenge for heart transplantation, affecting donor selection, immunosuppression, and posttransplant management. Left Ventricular Assist Device (LVAD) therapy is currently a viable option for patients with end-stage heart failure as a bridge to heart transplantation or destination therapy. Here, we present a therapeutic strategy for the management of acute HF with Intermacs profiles from 1 to 4, with or without Covid-19 infection, exemplified by serie of patients presenting with severe HF and successfully treated by LVAD therapy during the spread of the Covid-19 pandemic and the French national lockdown. This experience has shown that we still have the capacity to provide the right therapy for the right disease to the right patient. LVAD implantation seems to be the treatment of choice for advanced HF due to the lack of healthy donor hearts for cardiac transplantation. Covid or non-Covid context, we have to take care of our patients with end-stage HF the best we can.
Weighing Overall Fairness: A Critique of Balancing under the Criminal Limb of Article 6 of the European Convention on Human Rights
Authors: Samartzis Andreas 
Published: December 2020

Abstract
This article focuses on a specific standard by which the right to a fair trial is interpreted in the context of the right to legal assistance and the right to examine witnesses under Article 6 ECHR, the standard of overall fairness. The first section argues that the standard of overall fairness undermines the rule of law and represents a problematic conception of the right to a fair trial. The second section links overall fairness to the Court’s wider methodological approach to adjudication, namely ad hoc balancing, and establishes that ad hoc balancing is vulnerable to similar critiques. The third section advocates for a legal doctrine which rejects the theoretical assumptions of balancing and sets the basis for a reconceptualisation of the European Court of Human Rights’ approach to methodology and to the grant of remedies.