Pub Date : 2020-10-31DOI: 10.21817/ijet/2020/v12i5/201205154
R. Jahanbakhshi
- Sudden buckling and failure of bracing members in severe earthquakes reduces the efficiency of braced steel frames. The weakness can be modified and the efficiency of the bracing members can be increased by preventing the sudden buckling and failure of the bracing members. In this dissertation, we introduce a new type of braces called buckling restrained braces (BRB). This brace consists of a steel core and a part resisting against buckling. Different models have been proposed for the buckling restrained part. But the most prevalent of which is the use of a concrete layer around the steel core. Understanding the components of this type of brace, we calculate the critical load of some samples of these braces using ANSYS software with the load obtained from the analysis being compared with the load calculated by the Euler relation. Then, the behavior of ordinary buckling- restrained braced frames is compared in both linear and nonlinear ways using El Centro seismic acceleration mapping. Bracing the frames is performed in two coaxial and eccentric ways. In the coaxial mode, 8-foot and braces are used, while in the eccentric mode, 8-foot open braces are applied. To demonstrate the accuracy of the software, the results were compared with the those obtained by other researchers. The results indicated that these types of braces serve as a damper in the frames by preventing the buckling of the member and were found to be very effective in reducing the structures being displaced in severe earthquakes.
{"title":"Analysis of location, acceleration, force and ductility parameters in buckling-restrained braced frames","authors":"R. Jahanbakhshi","doi":"10.21817/ijet/2020/v12i5/201205154","DOIUrl":"https://doi.org/10.21817/ijet/2020/v12i5/201205154","url":null,"abstract":"- Sudden buckling and failure of bracing members in severe earthquakes reduces the efficiency of braced steel frames. The weakness can be modified and the efficiency of the bracing members can be increased by preventing the sudden buckling and failure of the bracing members. In this dissertation, we introduce a new type of braces called buckling restrained braces (BRB). This brace consists of a steel core and a part resisting against buckling. Different models have been proposed for the buckling restrained part. But the most prevalent of which is the use of a concrete layer around the steel core. Understanding the components of this type of brace, we calculate the critical load of some samples of these braces using ANSYS software with the load obtained from the analysis being compared with the load calculated by the Euler relation. Then, the behavior of ordinary buckling- restrained braced frames is compared in both linear and nonlinear ways using El Centro seismic acceleration mapping. Bracing the frames is performed in two coaxial and eccentric ways. In the coaxial mode, 8-foot and braces are used, while in the eccentric mode, 8-foot open braces are applied. To demonstrate the accuracy of the software, the results were compared with the those obtained by other researchers. The results indicated that these types of braces serve as a damper in the frames by preventing the buckling of the member and were found to be very effective in reducing the structures being displaced in severe earthquakes.","PeriodicalId":14142,"journal":{"name":"International journal of engineering and technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80886412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-31DOI: 10.21817/ijet/2020/v12i5/201205029
Mouhssine Chahbouni, Mustapha Elmouden, S. Boutahari, D. Amegouz
— Tolerancing is an important step in the design process of a mechanism. There are two tolerancing approaches: tolerance analysis and tolerance synthesis. The principle of tolerance analysis is to verify the functional condition of the mechanism, for that purpose it is necessary to check the specific tolerances of each elementary part. Whereas the tolerance synthesis aim to calculate the specific tolerances of the parts forming the mechanism. The purpose of this paper is to develop a new approach of geometric tolerances analysis with integration of form deviations. For this we studied an example of assembly of two cylindrical parts (shaft and bore). The first step is to analyze the tolerances of the component parts assembly using the deviation domain method by neglecting the form deviations. The second step of this study is to analyze the tolerances with the same method but with the introduction of the form deviations, by using the discrete modal method for the modeling of surfaces with form deviations and applying a new algorithm developed for the simulation of our approach. Finally, we compared the two studies with and without form deviations through the calculation of a non-compliance rate (TNC)
{"title":"New Approach to Integration of Form Deviations in the Analysis of Geometric Tolerances","authors":"Mouhssine Chahbouni, Mustapha Elmouden, S. Boutahari, D. Amegouz","doi":"10.21817/ijet/2020/v12i5/201205029","DOIUrl":"https://doi.org/10.21817/ijet/2020/v12i5/201205029","url":null,"abstract":"— Tolerancing is an important step in the design process of a mechanism. There are two tolerancing approaches: tolerance analysis and tolerance synthesis. The principle of tolerance analysis is to verify the functional condition of the mechanism, for that purpose it is necessary to check the specific tolerances of each elementary part. Whereas the tolerance synthesis aim to calculate the specific tolerances of the parts forming the mechanism. The purpose of this paper is to develop a new approach of geometric tolerances analysis with integration of form deviations. For this we studied an example of assembly of two cylindrical parts (shaft and bore). The first step is to analyze the tolerances of the component parts assembly using the deviation domain method by neglecting the form deviations. The second step of this study is to analyze the tolerances with the same method but with the introduction of the form deviations, by using the discrete modal method for the modeling of surfaces with form deviations and applying a new algorithm developed for the simulation of our approach. Finally, we compared the two studies with and without form deviations through the calculation of a non-compliance rate (TNC)","PeriodicalId":14142,"journal":{"name":"International journal of engineering and technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78520588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-31DOI: 10.24003/emitter.v8i2.504
Iqbal Sabilirrasyad, A. Basuki, T. Harsono
Fire is the closest disaster to us, a person who put cigarettes around flammable objects could burn one to dozens of houses. The last thing that happens was a mass panic. In this kind of situation, panic is one of the keys to determine how much probability someone will survive. However, detecting someone's panic during a fire is impossible. This leads some scientists to assume that mass panic was never happening and some studies use simple functions to determine someone when panic. Currently, thanks to technological advances we can easily build virtual worlds that resemble real events. To build a virtual world that could evoke panic we still need the right stimulus. In this paper, we will discuss with terms of fire disaster stimulus that possible to impel someone to feel panic. While some stimulus datasets that already exist have more broad categories, we wanted to focus on a specific problem. The determined parameters are considered through several elements that could cause a person to panic, either before or during a fire. By using the Self-Assessment Manikin system to obtain valance and arousal matrix, we conduct a test to see how much influence the fire categories stimulus provided.
{"title":"Fire Image Set for Evoking Panic","authors":"Iqbal Sabilirrasyad, A. Basuki, T. Harsono","doi":"10.24003/emitter.v8i2.504","DOIUrl":"https://doi.org/10.24003/emitter.v8i2.504","url":null,"abstract":"Fire is the closest disaster to us, a person who put cigarettes around flammable objects could burn one to dozens of houses. The last thing that happens was a mass panic. In this kind of situation, panic is one of the keys to determine how much probability someone will survive. However, detecting someone's panic during a fire is impossible. This leads some scientists to assume that mass panic was never happening and some studies use simple functions to determine someone when panic. Currently, thanks to technological advances we can easily build virtual worlds that resemble real events. To build a virtual world that could evoke panic we still need the right stimulus. In this paper, we will discuss with terms of fire disaster stimulus that possible to impel someone to feel panic. While some stimulus datasets that already exist have more broad categories, we wanted to focus on a specific problem. The determined parameters are considered through several elements that could cause a person to panic, either before or during a fire. By using the Self-Assessment Manikin system to obtain valance and arousal matrix, we conduct a test to see how much influence the fire categories stimulus provided.","PeriodicalId":14142,"journal":{"name":"International journal of engineering and technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79449115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-31DOI: 10.21817/ijet/2020/v12i5/201205151
A. Akrami, Mohammad Adel, Hossein Abolfathi
According to the definition of Energy Department, demand response is the ability of domestic, industrial, and commercial consumers to use electrical energy to modify their consumption patterns at peak time to affect the price and reliability of the grid. The power grid voltage static stability could be improved to a satisfactory level using the demand response. For this reason, in this research, this device was used to improve the static stability of the grid voltage. In order to improve the objective functions, the normal state of the grid is considered. Normal mode is considered as the normal state of the grid, which provides the grid in its stable state without any failures in equipment. The optimization algorithm in this study is the TLBO algorithm. The problem of optimal allocation of demand response programs is solved to achieve the best value of the objective function of the grid voltage static stability. The location, the active and reactive power for which the best static voltage stability is achieved in the grid, is presented as an optimal response. The simulation results showed that the best place for this program to improve the static stability of the grid is bus No. 8.
{"title":"Optimal Placement of the Demand Response Program for Voltage Static Stability using TLBO Algorithm","authors":"A. Akrami, Mohammad Adel, Hossein Abolfathi","doi":"10.21817/ijet/2020/v12i5/201205151","DOIUrl":"https://doi.org/10.21817/ijet/2020/v12i5/201205151","url":null,"abstract":"According to the definition of Energy Department, demand response is the ability of domestic, industrial, and commercial consumers to use electrical energy to modify their consumption patterns at peak time to affect the price and reliability of the grid. The power grid voltage static stability could be improved to a satisfactory level using the demand response. For this reason, in this research, this device was used to improve the static stability of the grid voltage. In order to improve the objective functions, the normal state of the grid is considered. Normal mode is considered as the normal state of the grid, which provides the grid in its stable state without any failures in equipment. The optimization algorithm in this study is the TLBO algorithm. The problem of optimal allocation of demand response programs is solved to achieve the best value of the objective function of the grid voltage static stability. The location, the active and reactive power for which the best static voltage stability is achieved in the grid, is presented as an optimal response. The simulation results showed that the best place for this program to improve the static stability of the grid is bus No. 8.","PeriodicalId":14142,"journal":{"name":"International journal of engineering and technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76779934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-31DOI: 10.21817/ijet/2020/v12i5/201205147
Mohmmad Masoud Ghiabi
: Viscous dampers are generally effective in controlling the vibrations stemming from the wind in the steel structures as well as in excitements with frequency band identical to that of these dampers. Tuned viscous damper is a passive control system the parameters of which are determined based on the structure’s preliminary specifications and always remain fixed. The primary goal of this study is observing the nonlinear behavior and evaluating the seismic performance of the steel structures with specific steel moment frames equipped with viscous damper under mass and damping uncertainty conditions of the structure as well as in respect to the elastic modulus and yield stress in steel. This evaluation has been carried out by the assistance of ETABS and Sketch-Up Software Packages with the time history analysis having been conducted in Sap2000 Software. To do so, three steel 3-, 9- and 12-storey structures with residential use have been considered on an earthquake-prone region. The study results indicated that the storey’s drift and dislocation have been considerably reduced. Thus, it can be concluded that the use of viscous damper is an appropriate method for controlling the structures’ dislocation. It was also found out that the emergence of disorder in the structure’s mass and damping has a greater effect in contrast to the other two parameters on the response of the structure equipped with viscous damper. mechanism of action is in the form of cylinder-piston. There are three chambers inside the cylinder: one on the right side of the piston, one on the left side thereof and one in the farthest end of the right side. There are holes in the piston and there is also liquid inside cylinder which is either oil or a condensable liquid. When piston moves in cylinder, its movement causes the displacement of the liquid from the orifice positioned on the piston’s head. The movement of the liquid from amongst these holes causes the depreciation of energy or, in other words, the energy is dissipated in the form of heat.
{"title":"Modeling and Investigating the Behavior of Viscous Dampers in Steel Structures","authors":"Mohmmad Masoud Ghiabi","doi":"10.21817/ijet/2020/v12i5/201205147","DOIUrl":"https://doi.org/10.21817/ijet/2020/v12i5/201205147","url":null,"abstract":": Viscous dampers are generally effective in controlling the vibrations stemming from the wind in the steel structures as well as in excitements with frequency band identical to that of these dampers. Tuned viscous damper is a passive control system the parameters of which are determined based on the structure’s preliminary specifications and always remain fixed. The primary goal of this study is observing the nonlinear behavior and evaluating the seismic performance of the steel structures with specific steel moment frames equipped with viscous damper under mass and damping uncertainty conditions of the structure as well as in respect to the elastic modulus and yield stress in steel. This evaluation has been carried out by the assistance of ETABS and Sketch-Up Software Packages with the time history analysis having been conducted in Sap2000 Software. To do so, three steel 3-, 9- and 12-storey structures with residential use have been considered on an earthquake-prone region. The study results indicated that the storey’s drift and dislocation have been considerably reduced. Thus, it can be concluded that the use of viscous damper is an appropriate method for controlling the structures’ dislocation. It was also found out that the emergence of disorder in the structure’s mass and damping has a greater effect in contrast to the other two parameters on the response of the structure equipped with viscous damper. mechanism of action is in the form of cylinder-piston. There are three chambers inside the cylinder: one on the right side of the piston, one on the left side thereof and one in the farthest end of the right side. There are holes in the piston and there is also liquid inside cylinder which is either oil or a condensable liquid. When piston moves in cylinder, its movement causes the displacement of the liquid from the orifice positioned on the piston’s head. The movement of the liquid from amongst these holes causes the depreciation of energy or, in other words, the energy is dissipated in the form of heat.","PeriodicalId":14142,"journal":{"name":"International journal of engineering and technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86800025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-23DOI: 10.24003/emitter.v8i2.502
Ahthasham Sajid, M. Awais, Mirza Amir Mehmood, S. Batool, Amir Shahzad, A. Zafar
Data analysis of social media posting continues to offer a huge variety of information about the health situation faced by an individual. Social networking or social media websites provide us a wealth of information generated by users in a variety of domains, that generated information are unstructured and unlabeled and are not captured in an exceedingly systematic manner, as info generated is not humanly possible to process due to its size. One traditional way of collecting patient's experience is by conducting surveys and questionnaires, as these methods ask fixed questions and are expensive to administer. In this paper, a patient feedback platform (PFP) using free text sentiment analysis is developed to computationally identify and categorize the polarity expressed in a piece of text. Results achieved have shown 88 % accuracy in predicting whether or not a patient will recommend the service. Based on which it is recommended that developed (PFP) patient feedback platform could be used to improve E-health care services indeed.
{"title":"Patient's Feedback Platform for Quality of Services via “Free Text Analysis” in Healthcare Industry","authors":"Ahthasham Sajid, M. Awais, Mirza Amir Mehmood, S. Batool, Amir Shahzad, A. Zafar","doi":"10.24003/emitter.v8i2.502","DOIUrl":"https://doi.org/10.24003/emitter.v8i2.502","url":null,"abstract":"Data analysis of social media posting continues to offer a huge variety of information about the health situation faced by an individual. Social networking or social media websites provide us a wealth of information generated by users in a variety of domains, that generated information are unstructured and unlabeled and are not captured in an exceedingly systematic manner, as info generated is not humanly possible to process due to its size. One traditional way of collecting patient's experience is by conducting surveys and questionnaires, as these methods ask fixed questions and are expensive to administer. In this paper, a patient feedback platform (PFP) using free text sentiment analysis is developed to computationally identify and categorize the polarity expressed in a piece of text. Results achieved have shown 88 % accuracy in predicting whether or not a patient will recommend the service. Based on which it is recommended that developed (PFP) patient feedback platform could be used to improve E-health care services indeed.","PeriodicalId":14142,"journal":{"name":"International journal of engineering and technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86645517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-23DOI: 10.14419/IJET.V9I4.31033
Jacob Hopkins, Forrest Joy, A. Sheta, H. Turabieh, Dulal C. Kar
The main objective of an unmanned aerial vehicle (UAV) path planning is to generate a flight path that links a start point to an endpoint in an indoor space avoiding obstacles. Path planning is essential for many real-life applications such as an autonomous car, surveillance mission, farming robots, unmanned aerial vehicles package delivery, space exploration, and many others. To create an optimal path, we need to adopt a specific criterion to minimize the distance the UAV must travel such as the Euclidean distance. In this paper, we provide our initial idea of creating an optimal path for indoor UAV using both A∗ and the Late Acceptance Hill Climbing (LAHC) algorithms. We are adopting an indoor search environment with various complexity and utilize the Probabilistic Roadmap algorithm (PRM) as a search space for both algorithms. The basic idea following PRM is to generate random sample points in the space and search these points for an optimal path. The developed results show that the LAHC algorithm outperforms the A∗ algorithm.
{"title":"Path Planning for Indoor UAV Using A* and Late Acceptance Hill Climbing Algorithms Utilizing Probabilistic Roadmap","authors":"Jacob Hopkins, Forrest Joy, A. Sheta, H. Turabieh, Dulal C. Kar","doi":"10.14419/IJET.V9I4.31033","DOIUrl":"https://doi.org/10.14419/IJET.V9I4.31033","url":null,"abstract":"The main objective of an unmanned aerial vehicle (UAV) path planning is to generate a flight path that links a start point to an endpoint in an indoor space avoiding obstacles. Path planning is essential for many real-life applications such as an autonomous car, surveillance mission, farming robots, unmanned aerial vehicles package delivery, space exploration, and many others. To create an optimal path, we need to adopt a specific criterion to minimize the distance the UAV must travel such as the Euclidean distance. In this paper, we provide our initial idea of creating an optimal path for indoor UAV using both A∗ and the Late Acceptance Hill Climbing (LAHC) algorithms. We are adopting an indoor search environment with various complexity and utilize the Probabilistic Roadmap algorithm (PRM) as a search space for both algorithms. The basic idea following PRM is to generate random sample points in the space and search these points for an optimal path. The developed results show that the LAHC algorithm outperforms the A∗ algorithm.","PeriodicalId":14142,"journal":{"name":"International journal of engineering and technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80330743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-22DOI: 10.14419/IJET.V9I4.31088
Hana Meftah Elgubbi, S. Othman, F. Harun
Natural kaolinite clay from Perak, Malaysia with cation exchange capacity (CEC) of 2.5 meq/100g was modified using cationic surfactant, benzyltriethylammonium chloride (BTEA-Cl), at 0.5, 1.0, 1.5 and 2.0 times the CEC. A number of techniques, namely energy dispersive X-ray (EDX) spectroscopy, X-ray diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), and Brunauer-Emmett-Teller (BET) nitrogen adsorption-desorption were then used for characterization of the kaolinite and/or organo-modified kaolinite clays. The presence of alkyl groups as a result of successful intercalation of cationic surfactant within the organokaolinite layers of the clay was exhibited by the FTIR spectra. The SEM microphotographs exhibited good dispersion of the natural clay particles and slight agglomeration in the organo-modified clay particles. XRD patterns showed that the d001 spacing of the natural kaolinite clay increased from 7.12 Å to between 7.20 7.34 Å for the organo-modified clays. Following the BET nitrogen adsorption-desorption technique, all clay samples were of Type IV with narrow hysteresis loops. Surface areas of the clays showed drastic decrease from (25.34 m/g) for natural kaolinite clay to between 5.90 13.11 m/g for organo-modified clays. The results suggested that modification of natural kaolinite clay using cation surfactant had successfully occurred. The modification can therefore be further applied for alteration and improvement of the properties of natural clays for various industrial applications.
{"title":"Modification of kaolinite clay using benzyltriethylammonium chloride as a surfactant: Preparation and characterization","authors":"Hana Meftah Elgubbi, S. Othman, F. Harun","doi":"10.14419/IJET.V9I4.31088","DOIUrl":"https://doi.org/10.14419/IJET.V9I4.31088","url":null,"abstract":"Natural kaolinite clay from Perak, Malaysia with cation exchange capacity (CEC) of 2.5 meq/100g was modified using cationic surfactant, benzyltriethylammonium chloride (BTEA-Cl), at 0.5, 1.0, 1.5 and 2.0 times the CEC. A number of techniques, namely energy dispersive X-ray (EDX) spectroscopy, X-ray diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), and Brunauer-Emmett-Teller (BET) nitrogen adsorption-desorption were then used for characterization of the kaolinite and/or organo-modified kaolinite clays. The presence of alkyl groups as a result of successful intercalation of cationic surfactant within the organokaolinite layers of the clay was exhibited by the FTIR spectra. The SEM microphotographs exhibited good dispersion of the natural clay particles and slight agglomeration in the organo-modified clay particles. XRD patterns showed that the d001 spacing of the natural kaolinite clay increased from 7.12 Å to between 7.20 7.34 Å for the organo-modified clays. Following the BET nitrogen adsorption-desorption technique, all clay samples were of Type IV with narrow hysteresis loops. Surface areas of the clays showed drastic decrease from (25.34 m/g) for natural kaolinite clay to between 5.90 13.11 m/g for organo-modified clays. The results suggested that modification of natural kaolinite clay using cation surfactant had successfully occurred. The modification can therefore be further applied for alteration and improvement of the properties of natural clays for various industrial applications.","PeriodicalId":14142,"journal":{"name":"International journal of engineering and technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85125804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-22DOI: 10.14419/IJET.V9I4.30934
I. K. Chinwuba, Uwaezuoke Nnaemeka, O. Nwanwe, A. C. Vivian, Abubakar U. Raji
Rheological properties of lead cement slurry with Mucuna solannie admixture as an extender was measured in accordance with API standard. Bentonite extender was used as a control. The elemental and oxide compositions of Mucuna solannie were determined using Scanning Electron Microscope and X-Ray Florescence (XRF) methods, and rheological properties were obtained using rheometer after conditioning. The rheological data from Mucuna solannie and bentonite lead slurries were validated using Bingham Plastic and HerschelBulkley models. The result showed that Mucuna solannie contains high carbon atomic concentration and is responsible for its high rheological properties values. Lead slurry prepared with Mucuna solannie gave higher plastic viscosity, yield point and gel strength than that of bentonite. Herschel-Bulkley model described the rheological properties better than Bingham Plastic model. Due to high rheological properties values of the slurry prepared with Mucuna solannie, dispersant is needed for the optimization of the yield point and gel strength.
{"title":"Rheological properties measurement of Mucuna solannie as cement slurry extender: characterization and verification using rheological models","authors":"I. K. Chinwuba, Uwaezuoke Nnaemeka, O. Nwanwe, A. C. Vivian, Abubakar U. Raji","doi":"10.14419/IJET.V9I4.30934","DOIUrl":"https://doi.org/10.14419/IJET.V9I4.30934","url":null,"abstract":"Rheological properties of lead cement slurry with Mucuna solannie admixture as an extender was measured in accordance with API standard. Bentonite extender was used as a control. The elemental and oxide compositions of Mucuna solannie were determined using Scanning Electron Microscope and X-Ray Florescence (XRF) methods, and rheological properties were obtained using rheometer after conditioning. The rheological data from Mucuna solannie and bentonite lead slurries were validated using Bingham Plastic and HerschelBulkley models. The result showed that Mucuna solannie contains high carbon atomic concentration and is responsible for its high rheological properties values. Lead slurry prepared with Mucuna solannie gave higher plastic viscosity, yield point and gel strength than that of bentonite. Herschel-Bulkley model described the rheological properties better than Bingham Plastic model. Due to high rheological properties values of the slurry prepared with Mucuna solannie, dispersant is needed for the optimization of the yield point and gel strength.","PeriodicalId":14142,"journal":{"name":"International journal of engineering and technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78612425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-06DOI: 10.14419/IJET.V9I3.30706
Medhat A. Rostum, Amr Zamel, H.M.M. Moustafa, I. Ziedan
Electric load forecasting process plays an extensive role in forecasting future electric load demand and peak load by understanding the previous data. Several researchers proved that, the presence of load forecasting error leads to an increase in operating costs. Thus Accurate electric load forecast is needed for power system security and reliability. It also improves energy efficiency, revenues for the electrical companies and reliable operation of a power system. In recent times, there are significant proliferations in the implementation of forecasting techniques. This survey aids readers to summarize and compare the latest predominant researches on electric load forecasting. Besides, it presents the most relevant studies on load forecasting over the last decade and discusses the different methods that are used in load prediction as well as the future directions in this field.
{"title":"Electrical Load Forecasting: A methodological overview","authors":"Medhat A. Rostum, Amr Zamel, H.M.M. Moustafa, I. Ziedan","doi":"10.14419/IJET.V9I3.30706","DOIUrl":"https://doi.org/10.14419/IJET.V9I3.30706","url":null,"abstract":"Electric load forecasting process plays an extensive role in forecasting future electric load demand and peak load by understanding the previous data. Several researchers proved that, the presence of load forecasting error leads to an increase in operating costs. Thus Accurate electric load forecast is needed for power system security and reliability. It also improves energy efficiency, revenues for the electrical companies and reliable operation of a power system. In recent times, there are significant proliferations in the implementation of forecasting techniques. This survey aids readers to summarize and compare the latest predominant researches on electric load forecasting. Besides, it presents the most relevant studies on load forecasting over the last decade and discusses the different methods that are used in load prediction as well as the future directions in this field.","PeriodicalId":14142,"journal":{"name":"International journal of engineering and technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90317817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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