bluuebunny/crossref_metadata_2025_split huggingface dataset:
Development of temperature-insensitive fibre bragg grating pressure transducer
Authors: Hafizi Z M , Aizuddin A M , Vorathin E 
Published: June 2020

Abstract
In this work, the development of an aluminium diaphragm fibre Bragg grating (FBG) pressure transducer with temperature compensation strategy is presented. One of the big challenges for the applications of an FBG pressure transducer is the inconsistency in output wavelength due to temperature variations. This situation leads to huge uncertainties in pressure readings. The aim of this article is to present how to eliminate the effects of temperature variations to the pressure measurements. Two FBG sensors were used; namely as FBG 1 and FBG 2. These FBGs were bonded each one on the diaphragm and base surface of the pressure transducer. The strain readings by the FBG on the diaphragm was normalized by the FBG reference which was pasted on the transducer’s base. This temperature compensation strategy was successful and the FBG pressure transducer was proven to be suitable for pressure measurement of gas with an average error of 2.32%. Besides, the result also shows that, for pressure ranging from 0 to 0.5 MPa, the FBG pressure transduced has sensitivity of 2.8485 nm/MPa with linear fitting coefficient of 99.97%.
Qualitative investigations on the stability of Al2O3-SiO2 hybrid water-based nanofluids
Authors: Ismail H , Sulaiman M Z , Aizzat M A H 
Published: June 2020

Abstract
Qualitative experiments were carried out to investigate the stability of Al2O3-SiO2 hybrid water-based nanofluids. The main nanoparticles used in this work were Al2O3 and SiO2 since these types of nanoparticles has been widely used and proposed in many applications and information on their hybrid dispersion stability characteristic are still elusive. The present work demonstrated the stability of Al2O3-SiO2 hybrid nanofluids using various preparation techniques and successively elucidating the optimum preparation method for hybrid nanofluid. The hybrid water-based nanofluid were prepared by dispersing a 50:50 ratio of Al2O3-SiO2 nanoparticles into distilled water to achieve total volume concentration of C=0.001, 0.01 and 0.1 vol%. Successively, the hybrid nanofluids were prepared using magnetic stirrer and ultrasonic bath. The samples are categorised into five preparation method which are: (i) 1 hour sonication, (ii) 1 hour magnetic stirrer, (iii) 0.25 hour magnetic stirrer and 1 hour sonication, and (iv) 0.5 hour magnetic stirrer and 1 hour sonication and (v) without magnetic stirring and sonication. The height of sedimentation and colloidal stability of each preparation methods were observed in the duration of 2 weeks. In the present work, it was observed that the dispersion stability of hybrid nanofluids prepared by applying magnetic stirrer for 15 minutes with prior to 1 hour of sonication had demonstrated the highest stability indicated by the lowest height of sedimentation and high colloidal stability.
Experimental study on dynamic viscosity of aqueous-based nanofluids with an addition of ethylene glycol
Authors: Safiei W , Rahman M M , Musfirah A H , Maleque M A , Singh R 
Published: June 2020

Abstract
In this study, the effect of adding different nanoparticles in the mixture of deionised water and ethylene glycol on dynamic viscosity is investigated experimentally. In order to prepare for single nanofluids, the dry nanoparticles of SiO2, Al2O3 and ZrO2 were dispersed into 60% volume of deionised water and 40% volume of ethylene glycol as a base fluid using a two-step method. The experiments were performed in the temperature range of 30°C and 70°C and weight fraction ranging between 0.1wt.% and 1wt%. No surfactant used in preparing the nanofluids. The dynamic viscosity data were collected using DV-II+ Pro Brookfield viscometer. The single, dual-hybrid and tri-hybrid aqueous based nanofluids dynamic viscosity results are explicitly presented. From the results, it is exhibited that nanofluid viscosity decreases with increasing liquid temperature and increases with increasing of nanoparticles volume concentration. The viscosity decreases with increasing of deionised water volume percentage in the base fluid. Zirconia single nanofluid at 1wt.% recorded 2.5 times maximum enhancement of viscosity over the base fluid. The results display that single nanofluids have higher dynamic viscosity compared to hybrid nanofluids.
Effect of nanocellulose with ethylene glycol for automotive radiator application
Authors: Naiman I , Ramasamy D , Kadirgama K 
Published: June 2020

Abstract
One of the effort to increase the effectiveness of radiator is by adding nanocellulose in radiator coolant. Furthermore, the percentage of nanocelluose plays an important role to make sure that the amount of heat transfer can be increased by increasing the percentage of nanopcellulose. The nanocelluose is used in this experiment as the nanoparticles In addition, Nanofluids are suspensions of nanoparticles in base fluids, a new challenge for thermal sciences provided by nanotechnology. Nanofluids have unique features different from conventional solid-liquid mixtures in which mm or μm sized particles of metals and non-metals are dispersed. Due to their excellent characteristics, nanofluids find wide applications in enhancing heat transfer. Radiator was modelled using One-Dimensional simulation software to predict the performance characteristics and effectiveness of the radiator with addition of nanoparticles. Besides that, method of using micro channels and fins to extend the cooling rate of a radiator ended up being a traditional technology which already reached to its maximum limit. Moreover, heat transfer coefficient of cellulose nanofluids can be increased by increasing the size of the radiator. Increase in size of radiator may enhance better and help to increase the rate of heat transfer. In addition, it clearly states that when the flow rate of the coolant or working fluid in the radiator cooling system increase the rate of heat transfer also is increases.
Improvement of heat transfer for DC motor windings
Authors: Chong C H , Rasid M A H 
Published: June 2020

Abstract
Temperature rise due to energy losses in the windings can reduce the performance of a motor as well as its service life. High temperature will damage the insulation on the windings and can eventually cause a short circuit that will permanently destroy the motor. Two different modifications which are internal modification and external modification will be implemented on a DC motor in order to improve the heat dissipation rate. Internal modification is responsible to improve the heat transfer rate between the windings and the casing while on the other hand, external modification will improve the heat transfer rate between the casing and the ambient air. In order to come out with effective strategies to improve the rate of heat transfer of a DC motor, different components temperature in a DC motor will be studied thoroughly to understand which component in a DC motor is affected the most by the heat waste produced when current is allowed to flow through the windings. Three different designs for heat sink which is also the external modification will be analysed in this paper to understand the relationship of their respective geometry and their heat transfer performance. By allocating the same amount of material for each heat sink modification, we can identify which design can increase the natural heat convection of the DC motor by the largest margin. Furthermore, comparison between the internal modification and external modification are studied to determine which method is more effective in removing the heat waste generated by the windings.
Quasi steady state of nucleate boiling heat transfer in low concentration of single and hybrid Al2O3-SiO2 water-based nanofluids
Authors: Aizzat M A H , Sulaiman M Z , Okawa T 
Published: June 2020

Abstract
Experiment were carried out to clarify the steady state condition of heat transfer coefficient (HTC) for single and hybrid Al2O3-SiO2 water-based nanofluids in low concentration of nucleate pool boiling. Al2O3 and SiO2 were chosen and ultra-sonification for 1 hour after being diluted in distilled water. The total of 0.001 vol.% concentration was divided into composition ratio of 0:100, 25:72, 50:50, 75:25, 100:0 for hybrid nanofluids. Successively, all the HTC values were collected through experimental works. In the present work, it was found that the steady stated for single and hybrid nanofluids were achieved except for single SiO2 nanofluid where even after 5 hours, the value of its ΔTW keep on decreasing. The nanoparticles deposited on the surface heater were suspected as the main factor for the current experimental results.
Comparative study statically determined trusses with trapezoidal and parabolic shape with large span
Authors: Botiș M F , Doșa A 
Published: June 2020

Abstract
In this work the authors propose a parametric study for beams with the opening of 30 m and 60 m. The analysed structures are statically determined and the optimal height and the related weight were established based on strength and stability conditions of structure elements. The structure analysis was performed using a program developed in the Matlab environment based on the displacement method. The analysed beams are manufactured of S355 steel bars with annular section. The beams were analysed for loads applied both the upper and lower nodes of structures. Based on the obtained results a comparison was made concerning the efficient use of material used for the trusses in respect to their weight.
GIS-based landslide susceptibility for environment protection of Black Sea Romanian coast
Authors: Buta C , Maftei C , Dobrica G , Draghici G 
Published: June 2020

Abstract
In the last decades the landslide assessment plays a crucial role in land use development in order to minimize the negative effect of economic live and people’s health. This paper present a GIS based landslide susceptibility assessment. This model is applied on the Littoral Coast line from Constanta to 2 Mai village, which is about 50 km along the Black Sea coast, crossing the Danube – Black Sea Channel at Agigea and passing through several resorts – Eforie Nord, Eforie Sud, Techirghiol, Costinesti and Mangalia. The data used are: geological map (lithology per geologic group), topographic maps of relevant scale to define slope angle (β), and some geotechnical parameters per geological group. For each of them a GIS map was produced. Based on the research results, we could conclude that Landslide Susceptibility Area (LSA) maps represent a great tool used in the identification of areas predisposed to landslides and could be used as support in the decision-maker process in order to propose environmental work protection or county planning.
Adding a masonry floor on top of a reinforced concrete high building in a seismic area
Authors: Constantinescu S 
Published: June 2020

Abstract
The paper studies the influence of adding an aerated autoclaved concrete (AAC) masonry walls story above a reinforced concrete structure of a high building. This structure is situated in a high seismic area (0.30g, where g is the gravity acceleration) in Bucharest, Romania. The new story will be lightweight because of the AAC. It is necessary to establish if the existing structure can bare the new story gravity loads and to determine the new building’s seismic behaviour. It is also determined if the new AAC masonry walls can bare the seismic loads they are to be subjected to. Both elastic and plastic analysis are present in the study.
The thermal field analysis of the rotary kiln for the cement plants by means of the image processing techniques
Authors: Danila A , Tamas F L 
Published: June 2020

Abstract
The implementation of the image processing techniques for the analysis of the thermal field images captured with infrared scanners from the shield of the rotary kilns increase the quality of the information required for the optimization, monitoring and failure prevention of the kiln. In this work, authors presented a method that implement advanced algorithms such as the Radon transform, the segmentation and labeling of images for estimating the space-distributed, parametric model of the kiln’s thermal field. The aim of the investigation is analyzing the similarities/differences between the thermal profile of the kiln and the kiln’s maintenance events. The implementation of the proposed method proved that the correlations between the changes of the thermal profile and the renewal of the thermal coating of the kiln may be well emphasized. In this perspective, this method is suitable for building a thermal profile of the kiln during an entire maintenance time span.
Development of experimental designs of the integrated heater for the disposal of low-potential waste heat of ventilation emissions
Authors: Ezhov V S , Semicheva N S , Burtsev A P , Ermakov D A , Perepelitsa N S 
Published: June 2020

Abstract
The aim of the study is to develop an experimental design of a complex air heater, conduct and analysis of the experiments, as well as to determine the main characteristics of the thermo-electric generator during the utilization of low-potential heat-La exhaust gases. The experimental setup consists of two units – thermoelectric generator operating on the principle of cross-heat exchanger heat exchange for heat recovery with parallel warmed of the supply air, which is supplied in the form of a mixture in the burner boiler unit and adsorber unit, filled blast furnace slag for the purification of waste gases from nitrogen oxides, c and carbon.
The mechanical properties and the freeze-thaw resistance of an ecological micro concrete made with sunflower stalks
Authors: Gradinaru C M , Serbanoiu A A , Muntean R 
Published: June 2020

Abstract
The aim of this study was to analyze the density, compressive strength, tensile strength and the freeze-thaw resistance of a cement micro concrete made with sunflower stalks that replaced 20%, 35%, 50%, 60%, 80% and 100% of the sand from its composition. The results showed, in general, a decrease of the analyzed properties, but the use of 20% and 35% sunflower stalk aggregates led to the improvement of the splitting tensile strength. A significant advantage of this type of micro concrete was its density, being obtained a lightweight building material, with up to 822 kg/m3.
Design of flow measurement system based on LabVIEW
Authors: Hao H , Zhang H L 
Published: June 2020

Abstract
The traditional flow meter is installed in the pipeline, not only to increase initial investment and cause stress loss to the system, but also to use a large amount of manpower and material resources in the data recording. In some areas that are not easily measured, such as buried in the ground, it can be difficult to measure. In order to solve these problems, based on the LabVIEW2013 as platforms and the hardware of sensor and data acquisition card, combined with the serial communication program to design the flow measurement system, getting traffic through the information collected data and the data acquisition card to convey in the program, get traffic after processing, according to flow to calculate the hydraulic balance, judging by the imbalance rate and the degree of hydraulic balance pipeline system is in a state of hydraulic balance. At last, through the actual test analysis, it is concluded that the flow measurement system for the conclusion of practical application, it not only can be used for pipe flow measurement and equilibrium state judgment, and also to have certain security on accuracy.
Computer modeling and simulation - tool for design of buildings and its systems
Authors: Horneț M , Todor R D , Cîrstolovean I L , Năstac D C , Mizgan P 
Published: June 2020

Abstract
This paper presents a real example of optimizing the design of buildings and the systems they serve, through computer modeling and simulation. It highlights the capabilities of the DesignBuilder simulation software used as a design tool for buildings and systems for heating, ventilation and air conditioning. The paper also includes discussions and conclusions about how simulation results can provide important information for building design. The building for which the research presented here were done is the Transilvana University of Brasov Development Research Institute (Romania).
Research on hysteretic behavior of external T-stiffener box-column I-beam space connections
Authors: Jin L , Chen L P , Zhang Y 
Published: June 2020

Abstract
The bearing capacity and deformation performance of external T-stiffener box-column to I-beam space connections were analyzed in this paper. A great deal of full-path analysis of space connections has been carried out by using finite element program ABAQUS with different parameters, which are box-column section width, I-beam flange width, section height of I-beam, flange width and web length of T-stiffener. FEM is proposed for numerical simulation under cycling loading based on the mechanical properties of materials. The result show that the hysteresis curve is the spindle shape and relatively full of T-stiffener box-column I-beam space connections. The ductility coefficient μ is larger than 4.0 and equivalent viscous damping coefficient h

e
is larger than 0.2 of the space connections, which have been met the limitation of the specification requirements. The bearing capacity and deformation performance of external T-stiffener box-column I-beam space connections can be improved with the increasing of T-stiffener flange width and web length effectively. Due to the fine performance of ductility, energy dissipation and seismic performance, the external T-stiffener box-column I-beam space connections can be proposed used in multi-layer steel structure engineering widely.
Tool wear analysis of multi-layer diamond coated tools for cutting white marble
Authors: Lu F , Li H X , Gabor C , Wang Y Y , Zhao J B 
Published: June 2020

Abstract
Study on the tool wear of cutting white marble by multi-layer diamond coated tool, and discussion of the wear characteristics and failure mechanism of the tool are presented in this paper. Multi-layer diamond coating was prepared by hot filament chemical vapor deposition (HFCVD). It was deposited on the surface of cemented carbide ball-end milling tool. The surface appearance of the tool was analyzed by an optical microscope. The grain state was analyzed by scanning electron microscopy. Comparing the surface morphology of the cutting for 1h, the area where the coating peeled off became larger when the cutting tool was cut for 2 hours, and the falling range was expanded along the cutting-edge direction while the flank surface was expanded, and the tool joint wear was severe. The composition of diamond grains was investigated by Raman spectroscopy. Comparing the surface morphology of the cutting for 1h, the area where the coating peeled off became larger when the cutting tool was cut for 2 hours, and the falling range was expanded along the cutting-edge direction while the flank surface was expanded, and the tool joint wear was severe.
Optimized design of air inlet devices based on environmental analysis of a broiler house model
Authors: Ma Y X , Zou H F 
Published: June 2020

Abstract
A typical broiler house in the cold region of northern China was selected as the research object of this study. The environment of the broiler house was studied in depth by using the Airpak software. Then, an optimized design of air inlet devices for this typical broiler house in the cold region, under the condition of transverse ventilation, was made on basis of two influence factors: the length of the flow guiding device, and the direction of airflow. The optimized air inlet devices helped to improve the airflow in the broiler house, hence changing environmental factors such as internal temperature distribution, wind speed distribution, and carbon dioxide distribution. The length of the ideal flow guiding device should be approximately 1 m and not more than 2 m. Influence by the direction of the air inlet devices was affected by length of the guided airflow. Increase in the direction of the air inlet device led to rise of the body plane temperature of the chickens and the overall wind speed, while carbon dioxide distribution remained basically unchanged. The best direction of airflow (3) should be 30°∼45°.
Friendly environment solution for a suffusion case
Authors: Măntulescu M 
Published: June 2020

Abstract
The paper describes about solving the phenomenon of suffusion in the foundation ground of a building. The soil was investigated with direct and indirect methods (drilling and dynamic penetration, electric tomography, seismic refraction). The filling of the cavity was made with a low permeability or practically impermeable material, homogeneous in granularity, with approximately the same stiffness as the surrounding soil.
Environmental impact evaluation associated to road traffic. A case study for Iasi city
Authors: Nicuță A M , Condurat M 
Published: June 2020

Abstract
Development means a strong transportation network. Still, it comes associated with negative consequences, among them climate change and environmental disruptions. The pollution effects associated with road transportation are determined by a serial of factors like atmospheric conditions, topography, climate, traffic, fuel type, vehicle age but also improper maintenance of vehicles. All these components lead to atmospheric emissions caused by fuel leakage on rolling surface, dust and noise, accidental leakage of toxic chemical products. The present paper brings its contribution to the issue of sustainable development, approaching the problem of environmental impact associated with road traffic, quantifying pollutant emissions and comparing values. The evaluation is based on statistics for the most crowded road in Iasi City, namely Independence Boulevard, consisting of traffic data for the last 3 years obtained from the local Office of Traffic Management.
Analysis of factors affecting the performance of reinforced concrete structures of engineering constructions under the influence of aggressive environment
Authors: Pakhomova E G , Emelyanov S G , Bredikhina N V , Semicheva N E 
Published: June 2020

Abstract
The work is devoted to the study of the performance of reinforced concrete structures of engineering structures operating under the synergetic influence of aggressive environment with damage to concrete and main reinforcement.
Road embankment for bridge accessing rural area
Authors: Pohrib D-M , Platică D , Turcanu P , Pleșcan C 
Published: June 2020

Abstract
The article aims to show the construction on soft soil of a road embankment for access to a bridge which passes over a stream. To strengthen, consolidating and draining the embankment near the stream a combined geosynthetic and gabions solutions it was use.
The analysis of influencing factors over the computerised designing process of deep excavations near roads in urban environment
Authors: Pohrib D-M , Turcanu P 
Published: June 2020

Abstract
The article aims to show the errors that a user can make in the use of inappropriate computing programs for the calculation of support structures and / or inadequate use of geotechnical data when designing support for deep excavations near roads in urban areas, and to indicate the software that offers plausible and reality-related results. Comparisons were made between the displacements and the efforts of ground support elements from numerical computational models in which was varied the coefficient of bedding for horizontal actions and between geotechnical calculation models.