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Fisitek : Jurnal Ilmu Fisika dan Teknologi
Published by Universitas Islam Negeri Sumatera Utara
ISSN : 25806661     EISSN : 2580989X     DOI : -
Core Subject : Science, Education,
Computer Science & IT Education Physics
FISITEK: Jurnal Ilmu Fisika dan Teknologi is a peer-reviewed journal which covers all aspects of theoretical and practical research of physics and their use. FISITEK is published by Physics Department of Science and Technology Faculty, State Islamic University of Sumatera Utara Medan (Universitas Islam Negeri Sumatera Utara Medan), Indonesia. FISITEK appears twice a year, in February and August. FISITEK is available in electronic and print editions.
Arjuna Subject : -
Articles 51 Documents
 1   2   3   4   5 
THE USE OF COFFEE HUSK FIBER IN THE MAKING OF POLYMER CONCRETE WITH POLYESTER RESIN AS A BINDER Awan Maghfirah; Heni Meilanda; Eddy Marlianto; Mulkan Iskandar Nasution
FISITEK: Jurnal Ilmu Fisika dan Teknologi Vol 3, No 2 (2019)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/fisitek.v3i2.6850

Abstract

Research of polymer concrete had been made by using sand, pumice, coffee shell fiber and polyester resin. Research had been done in order to get the best combination. Then, it has pressd by using Hot Press at temperature of 90°C for 30 minutes. The properties of polymer concrete has been analyzed that physical properties such as density, porosity, water absorbtion, mechanical properties, bending strength, compressive strength, tensile strength and photograph analysis by SEM-EDX. The result of research showed that the best combination based on test was sand 60 g, pumice, coffee shell fibe, and polyester resin with ratio of (8:2:30) gr that density 1,62 g/cm3; porosity 1.70%; water absorbtion 1.04%; bending strength 7.40 MPa; compressive strength 10.92 MPa; and tensile strength 4.13 MPa. Keywords: Coffee shell fiber, polymer concrete, pumice, and sand.
MECHANICAL PROPERTIES OF CONCRETE BRICKS WITH THE ADDITION OF SUGARCANE BAGASSE ASH Masthura Masthura; Indah Sawitri; Abdul Halim Daulay
FISITEK: Jurnal Ilmu Fisika dan Teknologi Vol 3, No 2 (2019)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/fisitek.v3i2.6852

Abstract

A research has been done on the mechanical bricking test with the addition of bagasse ash. In this study, the tested bricks tested were compressive and flexural strength. The purpose of this study was to determine the effect of adding bagasse ash to the mechanical properties of the concrete brick. The percentage variation of bagasse ash, cement, and sand are 0%:30%:70%, 5%:25%:70%, 10%:20%:70%, 15%:15%:70%, 20%:10%:70% with Water Cement Ratio of 0.5 in all variations. The addition of bagasse ash as a substitute for cement significantly affected the characteristics of the concrete brick. With the addition of bagasse ash in a mixture of 5-20% causes the compressive strength to decrease. While the flexural strength has increased in the variation of the mixture of 5-10% and has decreased in the variation of the mixture of 15-20%. The most optimal composition of mixing bagasse ash, cement, and sand is at 5% mixture variation for compressive strength and flexural strength testing because it meets SNI 03-0348-1989 standards. Whereas the other mixed variations are not optimal. Keywords : Bagasse ash, Compressive Strength, and Flexural Strength.
DESIGN OF KITCHEN SECURITY SYSTEM BASED ON ATMEGA32 MICROCONTROLLER Aulia Khusnul Arif Z.A; Nazaruddin Nasution; Abdul Halim Daulay
FISITEK: Jurnal Ilmu Fisika dan Teknologi Vol 3, No 2 (2019)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/fisitek.v3i2.6853

Abstract

The kitchen is one of the places most concerned by every community because the biggest fire potential in the house lies in the kitchen, the source of fire that often causes fires in the kitchen is a stove and gas. Therefore we need a design of a kitchen security system based on the ATmega32 microcontroller using flame sensors, MQ-2 and MQ-6. This study aims to produce a performance tool that will detect any movement of fire, gas, and smoke using an Early Warning System. The warning in the form of an alarm sounds, the fan turns, and the door opens automatically. Sensor detection is designed with 4 conditions namely Normal, Caution, Alert and Danger. The results of testing using the Flame sensor found a wave range from 22 nm to 1022 nm from normal to hazardous conditions, the MQ-2 found the results of testing from the ADC (Analog Digital Converter) with concentrations from 0 ppm to 130 ppm from normal to hazardous conditions, and the MQ-6 test results were obtained from the ADC (Analog Digital Converter) with concentrations from 0 ppm to 520 ppm from normal to dangerous conditions. Keywords : Kitchen, ATmega32, Flame sensor, MQ-2, and MQ-6.
THE COMPARISON OF BRICK SHRINKAGE VALUE ON THE ADDITION OF COCONUT AND RICE HUSK ASH Masthura Masthura; Anggun Hermi Palupi; Abdul Halim Daulay
FISITEK: Jurnal Ilmu Fisika dan Teknologi Vol 3, No 2 (2019)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/fisitek.v3i2.6854

Abstract

A research has been conducted on the comparison of the value of burnt shrinkage and porosity of bricks by adding a mixture of coconut husk ash and rice husk ash. The purpose of this study is to determine the effect of variations in the addition of coconut husk ash and rice husk to the value of burnt shrinkage and porosity of bricks. Porosity testing was carried out due to the addition of a mixture of coir ash and rice husk to produce porous bricks. Variations in the percentage of clay with a mixture (coconut husk ash and rice husk ash) include 100%:0%, 95%:5%, 90%:10%, 85%:15% and 80%:20%. The results obtained for the value of burnt shrinkage from the addition of rice husk ash in brick making results are smaller than the addition of coconut coir ash. The results of the shrinkage value of the addition of coconut coir ash and rice husk already meet the SNI 15-2094-2000 standards that is <15%. However, the porosity value from the addition of coconut husk ash and rice husk ash does not meet the standards required in SNI 15-2094-2000 because> 20%. With large porosity values exceeding SNI 15-2094-2000 standards, the suggested bricks are used as an inner wall and cannot be used as a face wall. Keywords: burnt shrinkage, coconut husk ash, porosity, and rice husk ash.
THE EFFECT OF VOLTAGES IN THE ELECTROCOAGULATION PROCESS ON DECREASING FE AND MN LEVELS Ria Muliyana; Masthura Masthura; Abdul Halim Daulay
FISITEK: Jurnal Ilmu Fisika dan Teknologi Vol 3, No 2 (2019)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/fisitek.v3i2.6836

Abstract

Research on the effect of electric voltage on the electrocoagulation process in reducing levels of heavy metals in water. This study aims to determine the metal content Fe (Iron) and Mn (Manganese) dug well water by varying the electrical voltage of 3, 6, 9, and 12 volts. this research use dug well water which come from Teluk Piyai Pesisir Village Kubu sub-district Rokan Hilir district Riau Province. Test results on the electrocoagulation method with electrical voltage 3 volt metal content Fe 0,002 mg/l and metal content Mn <0,0034 mg/l, electrical voltage 6 volt metal content Fe 0,003 mg/l and metal content Mn0,003 mg/l, electrical voltage 9 volt metal content Fe 0,004 mg/l and metal content Mn 0,007 mg/l, and electrical voltage 12 volt metal content Fe 0,001 mg/l and metal content Mn 0,005 mg/l. From variations in electrical voltage using aluminum electrodes that meet the Minister of Health Regulations standards RI No. 416/MENKES/PER/IX/1990 that on voltage 3, 6, and 12 volt. Keywords: Electrical Voltage, Electrocoagulation, and Heavy Metal.
ANALYSIS OF MECHANICAL PROPERTIES OF PARTICLE BOARD BASED DURIAN SKIN AND SUGAR CANE BAGASSE WITH FORMALDEHIDA UREA ADHESIVE Ety Jumiati; Rika Safitri; Abdul Halim Daulay
FISITEK: Jurnal Ilmu Fisika dan Teknologi Vol 4, No 1 (2020)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/fisitek.v4i1.7918

Abstract

The particle board was made based on mixing durian skin and sugar cane bagasse with urea formaldehyde adhesive. The variations the composition of mixing durian skin, sugar cane bagasse with urea formaldehyde adhesive used among other: 35%:35%:30%, 30%:30%:40%, and 25%:25%:50% and printing time and pressing for 24 hours. The parameters of the testing include: Modulus of Rupture (MOR) dan Modulus of Elasticity (MOE). Analysis of the mechanical properties of the particle board produced at the composition of 35%:35%:30% which has a value MOR = 446,17 kgf/cm2 and MOE = 160,9 kgf/cm2, at the composition of 30%:30%:40%, has a value MOR = 1369,57 kgf/cm2 dan MOE = 3903,3 kgf/cm2, at the composition of 25%:25%:50%, has a value MOR = 1463,07 kgf/cm2,  dan MOE = 3342,1 kgf/cm2 which matches SNI 03-2105-2006 criteria type 8 is not required.
AUTOMATIC WATERING SYSTEM BASED ATMEGA328 MICROCONTROLLER ON GREEN DELI HONEY GUAVA PLANTS Zul Azhar; Fathurrahman Fathurrahman; Zul Mahadi Nata
FISITEK: Jurnal Ilmu Fisika dan Teknologi Vol 4, No 2 (2020)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/fisitekfisitek.v4i2.8196

Abstract

The role of water is very important in the growth process of the green deli honey guava plant, because this plant absolutely requires regular and sufficient water especially during the dry season. One of the obstacles for guava farmers is the problem of watering. Where honey guava has a moisture percentage ranging from 60% to 80% which must be maintained so that the quality of honey guava fruit is better. From these problems, an automatic watering device is designed based on soil moisture. Where this tool can also be monitored via android, LCD, and computer (PC) to make it easier for farmers to monitor. This study aims to determine the effect of soil moisture and assist farmers in controlling soil moisture in the cultivation of deli honey guava. The benefit of this research is to help farmers in an accurate and measurable process of watering plants. This research was conducted in Mancang Village, Binjai City. In this study, 2 honey guava trees were used to be tested using an automatic plant watering tool. One guava tree uses the manual method and the other is controlled using an automatic sprinkler. In this process the data is retrieved via a computer via USB with the PLX-DAQ software. The results showed that the soil moisture of the honey guava tree which was controlled using automatic sprinklers was more stable in maintaining soil moisture of 60% to 80% compared to the honey guava tree which was watered manually because the percentage of soil moisture did not match the plant's needs. Thus, the watering process using this tool is more controlled and measured in maintaining soil moisture in accordance with the needs of the green deli honey guava plant.
THE EFFECT OF TEMPERATURE VARIATION ON RESISTANCE VALUE IN ELECTRICITY CIRCUITS Ridwan Yusuf Lubis; Lailatul Husna Lubis; Miftahul Husnah
FISITEK: Jurnal Ilmu Fisika dan Teknologi Vol 4, No 1 (2020)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/fisitek.v4i1.7919

Abstract

Temperature is the level of heat in an object and one of the variables that gives an influence on the value of an object's electrical resistance. The value of electrical resistance affects the conductivity of objects. This study aims to determine the change in the value of resistance in the wire connected to the heater. The benefit of this research is to provide information to the public about the effect of temperature changes on the value of electrical resistance. This study uses an experimental method by measuring the resistance values on wire 1 and wire 2 which are at room temperature and influenced by heat sources. Changes in temperature towards higher values make free electrons in the wire move faster. The higher the temperature value, the higher the value of resistance produced by the wire.
CONTROL SYSTEM OF SWIMMING POOL BASED pH LEVEL, RAINFALL AND LIGHT INTENSITY Abdullah Abdullah; Silvy Asri Ramadhani Siregar
FISITEK: Jurnal Ilmu Fisika dan Teknologi Vol 4, No 1 (2020)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/fisitek.v4i1.8066

Abstract

Swimming pools have the potential to cause health problems if not properly maintained, one of them is by maintaining the swimming pool water pH. pH is very important as a parameter of water quality, the acidity is called neutral if the pH value is 7, the value of pH <7 contains acids and pH > 7.8 contains bases. therefore designed a pool level pH control tool based on light intensity and rainfall. This tool aims to produce a neutral outdoor swimming pool water pH, able to design water pH measuring devices using light intensity sensors and rainfall sensors based on ATmega32 microcontroller and analyze the effect of swimming pool water quality on health. Tests carried out with aquarium prototype and measurements carried out for 1 day continuously. The test results show that this tool is able to neutralize the pH of swimming pool water by producing pH 6.8 and 7.1.Thus, the tool designed is efficient in providing information on the acidity of swimming pool water pH and can neutralize pH levels.
THE DESIGN OF TOOLS AND LOCATION DETERMINATION FOR THE VISUALLY IMPAIRED USES A MICROCONTROLLER-BASED ULTRASONIC SENSOR Mulkan Iskandar Nasution; Syahrul Ardiansyah
FISITEK: Jurnal Ilmu Fisika dan Teknologi Vol 4, No 1 (2020)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/fisitek.v4i1.8068

Abstract

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