APPLIED PHYSICS OF CONDENSED MATTER (APCOM 2019)最新文献

{"title":"Tool wear evaluation on rubberized fly ash geopolymer milling","authors":"T. Yu, M. Fathullah, M. Abdullah, Z. Shayfull, F. Tahir","doi":"10.1063/1.5118193","DOIUrl":"https://doi.org/10.1063/1.5118193","url":null,"abstract":"Geopolymer is a new type of sustainable material which is produced by using industrial by-product. Recent articles showed that geopolymer materials have good machining property. However, the machining optimization only covered on natural fly ash geopolymer by using turning operation. Besides, the rubberised fly ash geopolymer (RFAG) has not been well investigated. Therefore, new research about machining on RFAG is needed to be carried out.","PeriodicalId":112912,"journal":{"name":"APPLIED PHYSICS OF CONDENSED MATTER (APCOM 2019)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117341463","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}

{"title":"Causes of construction delay for housing projects in Malaysia","authors":"M. Z. Ramli, A. Nordin, Nursyadzatul Tasnim Roslin, N. B. Hamid, N. S. Azman, N. Zahari","doi":"10.1063/1.5118038","DOIUrl":"https://doi.org/10.1063/1.5118038","url":null,"abstract":"Every organization that is involved with the construction industry undoubtedly has delayed progress at some phase in their project or development. Delay in construction project become a common situ...","PeriodicalId":112912,"journal":{"name":"APPLIED PHYSICS OF CONDENSED MATTER (APCOM 2019)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126290394","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}

{"title":"Investigation of the effectiveness of water hyacinth as floating wetland plant on treating the nutrient pollutants","authors":"M. F. Chow, V. Santhiran, H. Haris","doi":"10.1063/1.5118036","DOIUrl":"https://doi.org/10.1063/1.5118036","url":null,"abstract":"","PeriodicalId":112912,"journal":{"name":"APPLIED PHYSICS OF CONDENSED MATTER (APCOM 2019)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128488859","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}

{"title":"Induction motor rotor: Energy efficiency improvement on economic and environment","authors":"M. K. Rahmat, Y. Yahya, Kadhim H. Suffer","doi":"10.1063/1.5118060","DOIUrl":"https://doi.org/10.1063/1.5118060","url":null,"abstract":"Nowsday, the induction motor is currently he most exploited machine for industrial motor global. Its ease of use, self-starting, small in size, light in weight, high efficiency, less maintenance and cheap per same power rating which usually met the required characteristics for industry as attract its application in industry. It is presented from small horse-power up to thousands of horse-power. Induction motor was employed in application such as small pumps, conveyors, drilling machines, fans, blowers and escalators. The increment in energy efficiency was investigated using copper for rotor bar slots. Normally, the copper losses in rotor part of induction motor is contributing to the energy losses. The work proposed a new design for the rotor part, with modified rotor bar type, bar size and rotor bar design. This work has been investigated using two methods, specifically, MotorSolve (IM) software and theoretically calculation. A set of simulation was showed the significant improvement in the energy efficiency for the new design. The theoretical calculation utilised MATLAB simulations. The comparison on efficiency between the existing design and the proposed new design was carried out using MotorSolve (IM) simulation. The result showed that the proposed new design was increased energy efficiency of 76.92% as compared to exiting design of 74%. The result was proven using MATLAB. For energy and cost saving, a new design rotor was saved 154kWh/year and utility bills of RM60.20/year for each motor. Lastly, a cost estimate for 100,000 pieces of induction motor with a new rotor bar type design is presumed and shows the value was saved nearly RM6.02million.Nowsday, the induction motor is currently he most exploited machine for industrial motor global. Its ease of use, self-starting, small in size, light in weight, high efficiency, less maintenance and cheap per same power rating which usually met the required characteristics for industry as attract its application in industry. It is presented from small horse-power up to thousands of horse-power. Induction motor was employed in application such as small pumps, conveyors, drilling machines, fans, blowers and escalators. The increment in energy efficiency was investigated using copper for rotor bar slots. Normally, the copper losses in rotor part of induction motor is contributing to the energy losses. The work proposed a new design for the rotor part, with modified rotor bar type, bar size and rotor bar design. This work has been investigated using two methods, specifically, MotorSolve (IM) software and theoretically calculation. A set of simulation was showed the significant improvement in the energy effici...","PeriodicalId":112912,"journal":{"name":"APPLIED PHYSICS OF CONDENSED MATTER (APCOM 2019)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115575564","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}

{"title":"On the ultra-fast ion induced demagnetization in thin films","authors":"T. Iliť, P. Valko, M. Drzik, M. Marton, M. Behúl, M. Vojs","doi":"10.1063/1.5119474","DOIUrl":"https://doi.org/10.1063/1.5119474","url":null,"abstract":"In this paper we discuss ion-induced ultra fast demagnetization and present an approach for experimental investigation of the following magnetization dynamics. The effect, if confirmed, might have applications in spintronics, micro-scale power generation or communication and for basic research in the area of ion track formation as a mean to observe thermodynamics in ion tracks. The proposed approach lies in using magnetic antenna for detection of the field change induced by ion stopping and converting the field change to electrical signal. The approach was confirmed feasible, providing temporal resolution below 100ps in tests with other fast impulse heat source – a femtosecond laser. Presented experimental results and simulations based on ion-induced thermal spike model show a necessity to develop broadband antennas with high sensitivity and micro-scale dimensions together with specialized high frequency amplifier electronics, in order to allow observation of ultra-fast ion-induced demagnetization.","PeriodicalId":112912,"journal":{"name":"APPLIED PHYSICS OF CONDENSED MATTER (APCOM 2019)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124465776","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}

{"title":"Progress in development of Jiles-Atherton model of magnetic hysteresis","authors":"R. Szewczyk","doi":"10.1063/1.5119498","DOIUrl":"https://doi.org/10.1063/1.5119498","url":null,"abstract":"Paper presents the review of recent advances in development of Jiles-Atherton model. Solutions of anhysteretic curve considering uniaxial and grain-oriented anisotropy are presented. Moreover, different concepts of differential equations stating magnetic hysteresis are explained. Finally, problems connected with solving ordinary differential equations, stability, and parameters identification are briefly elaborated. On the base of presented advances in model development, issues connected with interaction of anisotropy energies as well as stability criteria are identified, as a key barriers creating difficulties for understanding the principles of magnetization process and efficient application of Jiles-Atherton model for modelling inductive components with cores made of soft magnetic materials.Paper presents the review of recent advances in development of Jiles-Atherton model. Solutions of anhysteretic curve considering uniaxial and grain-oriented anisotropy are presented. Moreover, different concepts of differential equations stating magnetic hysteresis are explained. Finally, problems connected with solving ordinary differential equations, stability, and parameters identification are briefly elaborated. On the base of presented advances in model development, issues connected with interaction of anisotropy energies as well as stability criteria are identified, as a key barriers creating difficulties for understanding the principles of magnetization process and efficient application of Jiles-Atherton model for modelling inductive components with cores made of soft magnetic materials.","PeriodicalId":112912,"journal":{"name":"APPLIED PHYSICS OF CONDENSED MATTER (APCOM 2019)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129145766","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}

{"title":"Preparation of Fe-impregnated sepiolite catalytic layers for synthesis of carbon nanotube nanocomposites","authors":"M. Kadlecíková, J. Breza, K. Jesenák, M. Mikolasek, Ľ. Vančo, A. Grmanová, J. Racko","doi":"10.1063/1.5119477","DOIUrl":"https://doi.org/10.1063/1.5119477","url":null,"abstract":"This experimental work is focused on the catalyst films – their chemical composition, preparation and catalytic activity (in terms of the amount of CNTs produced) in the process of synthesis of carbon nanotubes using hot filament chemical vapor deposition. The series of experiments was devoted to the selection of methods for preparation and characterization of films and nanocomposites. The prepared nanocomposites based on carbon nanotubes and iron modified mineral fractions were evaluated by electron microscopy and Raman spectroscopy.This experimental work is focused on the catalyst films – their chemical composition, preparation and catalytic activity (in terms of the amount of CNTs produced) in the process of synthesis of carbon nanotubes using hot filament chemical vapor deposition. The series of experiments was devoted to the selection of methods for preparation and characterization of films and nanocomposites. The prepared nanocomposites based on carbon nanotubes and iron modified mineral fractions were evaluated by electron microscopy and Raman spectroscopy.","PeriodicalId":112912,"journal":{"name":"APPLIED PHYSICS OF CONDENSED MATTER (APCOM 2019)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129208888","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}

{"title":"Non-linear thermoelastic analysis of the nylon actuator","authors":"J. Murín, M. Minar, P. Melek, V. Goga, V. Kutǐs, Juraj Paulech","doi":"10.1063/1.5119483","DOIUrl":"https://doi.org/10.1063/1.5119483","url":null,"abstract":"A new actuator, consisting of two nylon springs, is designed in a form of the von Mises truss system. The nylon spring (an artificial muscle) is produced by twisting of the nylon line. As a result of the twisting into the prestressed spring, a new microstructure of the fibre has been formed. The spring, after its mechanical elongation, exhibits a negative temperature expansion after its warming. This is the main advantage for the practical applications. The heating of the actuator is realized by the electric wire, which is wound on the nylon springs. Semi analytical and numerical methods are used for geometric non-linear thermo elastic analysis of the actuator to obtain its deformation caused by the electro-thermo-mechanical loads. The calculated results are verified by the measurement on the real model. A very good agreement of both the results is obtained.A new actuator, consisting of two nylon springs, is designed in a form of the von Mises truss system. The nylon spring (an artificial muscle) is produced by twisting of the nylon line. As a result of the twisting into the prestressed spring, a new microstructure of the fibre has been formed. The spring, after its mechanical elongation, exhibits a negative temperature expansion after its warming. This is the main advantage for the practical applications. The heating of the actuator is realized by the electric wire, which is wound on the nylon springs. Semi analytical and numerical methods are used for geometric non-linear thermo elastic analysis of the actuator to obtain its deformation caused by the electro-thermo-mechanical loads. The calculated results are verified by the measurement on the real model. A very good agreement of both the results is obtained.","PeriodicalId":112912,"journal":{"name":"APPLIED PHYSICS OF CONDENSED MATTER (APCOM 2019)","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115001898","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}

{"title":"Relative Seebeck coefficient differences used for metal sorting","authors":"M. Nowicki, B. Lewandowska","doi":"10.1063/1.5119486","DOIUrl":"https://doi.org/10.1063/1.5119486","url":null,"abstract":"This paper is concerned with improving the accuracy of thermoelectric NDT distinguishing between metals and alloys of different composition. While the thermoelectric alloy sorters are known for decades, they generally depend only on thermoelectric voltage differences between samples of different materials, and standard samples for comparisons. In the presented approach, relative Seebeck coefficient is calculated in real time in order to raise the sorting resolution capability. This solution virtually eliminates the problem connected with temperature instability of the hot probe. The experimental test stand consisted of heated probe, two millivoltmeters and a PC with custom LabView processing software. The effectiveness of sample identification was verified in the blind test on example of metallic amorphous ribbons indistinguishable for the naked eye.This paper is concerned with improving the accuracy of thermoelectric NDT distinguishing between metals and alloys of different composition. While the thermoelectric alloy sorters are known for decades, they generally depend only on thermoelectric voltage differences between samples of different materials, and standard samples for comparisons. In the presented approach, relative Seebeck coefficient is calculated in real time in order to raise the sorting resolution capability. This solution virtually eliminates the problem connected with temperature instability of the hot probe. The experimental test stand consisted of heated probe, two millivoltmeters and a PC with custom LabView processing software. The effectiveness of sample identification was verified in the blind test on example of metallic amorphous ribbons indistinguishable for the naked eye.","PeriodicalId":112912,"journal":{"name":"APPLIED PHYSICS OF CONDENSED MATTER (APCOM 2019)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123686549","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}

{"title":"Design of polymer based 8-channel, 100-GHz AWG applying various photonics tools","authors":"D. Seyringer, L. Gajdošová, P. Gašo, D. Pudiš","doi":"10.1063/1.5119493","DOIUrl":"https://doi.org/10.1063/1.5119493","url":null,"abstract":"We present design and simulation of polymer based 8-channel, 100-GHz AWG, designed for central wavelength of 1550 nm. The input design parameters were calculated applying AWG-Parameters tool. The AWG layout was created and the simulations were performed applying commercial photonic tool PHASAR from Optiwave. The achieved transmission characteristics were evaluated by AWG-Analyzer tool. The achieved simulation results confirm a very good agreement between the designed and simulated transmission parameters.","PeriodicalId":112912,"journal":{"name":"APPLIED PHYSICS OF CONDENSED MATTER (APCOM 2019)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129730597","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}