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Frequency: 12 issues per year
ISSN: 2250–3005 (online version)
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International Journal of Computational Engineering Research

(IJCER)

 

Articles

 

Research Article  open access
Design and construction of a didactic robotic arm with four degrees of freedom
Elmer Gómez Pérez || Leobardo Mendo Ostos || Lourdes Tarifa Lozano
Mexico
International Journal of Computational Engineering Research, Volume 10 ~ Issue 06 (June – 2020)

Abstract

The design and construction of a didactic robotic arm of four degrees of freedom (4GL) for an institutional interest, constituted the starting point of the research presented that focused on the determination of the substantive elements provided by the process of mathematical modeling in the training of professional skills in future engineers. It was developed at the National Technological Institute of Mexico / Tantoyuca campus, with students from the 6th semester of Electronic Engineering in order to investigate the role played by students in an active learning environment based on projects and mathematical modeling. The results obtained report findings, moments where the student takes an active and leading role in their learning process, developing activities of professional interest that demand challenges........

Keywords: Electronic Engineering, Mathematical modeling process, Professional skills, Problem resolution,Project Based Learning, robotic arm.

Research Article  open access
A comparative study of dielectric behaviours of pineapple, dagger and sisal fibre at different temperature readily available in North-East India
Manoranjan Talukdar
India
International Journal of Computational Engineering Research, Volume 10 ~ Issue 06 (June – 2020)

Abstract

The dielectric behaviours of some raw and degummed plant fibres such as pineapple (Ananas comosus) dagger (Agave americana) and sisal ( Sansevieria trifascicata) are studied in 1 KHz frequency and in the temperature range between 303K and 573K. The dielectric behaviours at different temperature of the fibres has not changed due to the degumming. It is observed that the dielectric constant () has changed due to the degumming. The dielectric loss tangent () are almost same in air medium at the same temperature for raw and degummed fibre.........

Keywords: Dielectric constant, dielectric loss, degumming, glass transition temperature, plant fibre.

Research Article  open access
Thermoelastic stress analysis on rotating and oscillating mechanical components
L. Capponi || R. Marsili || G. Rossi || T. Zara
India
International Journal of Computational Engineering Research, Volume 10 ~ Issue 06 (June – 2020)

Abstract

Thermoelastic stress analysis on mechanical components has been already conducted in static conditions. The present study aims to develop a thermoelastic stress analysis in a dynamic state, in particular on a fan blade during its working condition. The test was conducted by capturing the data through a thermal camera, analysing them with a proper software, that is able to de-rotate the frames using particular markers, applied on the fan flange. The data were processed using two different approaches. The first one is based on Discrete Fourier Transform (DFT), while the second uses the digital lock-in technique. The obtained results were compared with those from the study conducted in static condition........

Keywords: Thermoelasticity, thermal camera, thermal marker, lock-in, Discrete Fourier Transform.

Research Article  open access
An Efficient Microstrip Patch Antenna for Specific Absorption Rate Reduction in Human Tissues
Kajal G Patil || UdayPandit Khot
India
International Journal of Computational Engineering Research, Volume 10 ~ Issue 06 (June – 2020)

Abstract

SAR is a value describing how much power absorbed in biological tissue when the Body is exposed to electromagnetic radiation. The use of microstrip patch antenna for measuring SAR in human tissues leads to various effects such as thermal effect, cancer, cognitive effects, MRI biological effects, etc. Because of these biological effects, there is a need of SAR reduction. There are various SAR reduction techniques of microstrip patch antenna. Here we construct the antenna using two methods together such as slotting technique on patch and ground plane with defects. This paper demonstrates the technique for microstrip patch antenna to reduce SAR in human body on an 800MHz. SAR was studied as well to illustrate how on-body communication or mobile phones antennas of GSM band might affect human body..

Keywords: Biological Effects, Human Tissues, Microstrip Patch, Power Absorbed, SAR

Research Article  open access
Performance investigation of FSO link employing polarization division multiplexing and coherent detection-orthogonal frequency division multiplexing under different link parameters
Tanu Shri || Anita Suman || Parveen Kumar
India
International Journal of Computational Engineering Research, Volume 10 ~ Issue 06 (June – 2020)

Abstract

Free space optics (FSO) is a novel transmission technique capable of providing high-capacity links with large bandwidth and robustness against electromagnetic waves interference. In this work, we demonstrate the development of a 100 Gbps FSO link which employs the hybridization of polarization division multiplexing technique and coherent detection-orthogonal frequency division multiplexing technique. Further, we have investigated the system performance by varying different parameters like the input power, the size of the receiver antenna, wavelength of laser beam, the angle of beam divergence, and the additional losses. The proposed system has been modeled and analyzed over Optisystem test bed..

Keywords:free space optics; polarization division multiplexing; coherent detection; orthogonal frequency division multiplexing; system parameters

Research Article  open access
Analysis of the Behavior of Breathable Particulate Matter in University Bike Users in Route OverEngativa, Bogota
Sonia Menesses || Christian Alarcon || Rodrigo Infante || María Fernanda Albornoz
India
International Journal of Computational Engineering Research, Volume 10 ~ Issue 06 (June – 2020)

Abstract

Bicycle is one of the means of transportation that provides the most significant benefits for human life quality such as economic savings, physical activity and in a city like Bogotá that has a high vehicular flow, time saving. Due to those reasons many citizens choose to use bicycle. However, bicycling as an activity is exposed to the air pollution, this has brought negative aspects for the health of the population, causing premature deaths, cardiovascular and respiratory diseases. When seeing this problem, it was necessary to investigate what is the breathable dose that a user bike can receive on its journey, this experiment was carried out specifically with the Universidad Libre students on the route they use most frequently, in times with high vehicular traffic called "rush hours", taking daily samples with a specialized gear (GilAir3) during.......

Keywords:Bike path, Bike users, Breathable dose, Data analysis, Particulate matter (PM), R software

Research Article  open access
Holistic Approach for Generating and Assessing Sustainable Rehabilitation Strategies in Roadway Construction
Dimitrios Goulias || YunpengZhao || Dominique Peterson
USA
International Journal of Computational Engineering Research, Volume 10 ~ Issue 06 (June – 2020)

Abstract

Construction and rehabilitation of infrastructure consume large amounts of natural resources, such as raw materials, energy and water, produce significant waste and consequently generate greenhouse gas emissions. While past studies focused on the sustainability assessment of specific aspects of recycled materials and infrastructure components, this study addressed the need of providing a holistic approach in generating and analyzing feasible roadway rehabilitation strategies that are sustainable. The proposed methodology considers all the phases of generating such rehabilitation alternatives, from the planning phase to condition assessment, structural design, life cycle economic and environmental impact analysis, and the criteria for selecting the best solution. Specific steps of the analysis used in the methodology are presented herein with example results from two case.......

Keywords:Sustainability, roadway construction, life-cycle analysis, environmental implications, recycling materials