Jurnal Fisika : Fisika Sains dan Aplikasinya
Jurnal Fisika – Fisika Sains dan Aplikasinya diterbitkan oleh Jurusan Fisika, Fakultas Sains dan Teknk - Universitas Nusa Cendana secara berkala (setiap 6 bulan) yaitu setiap bulan April dan Oktober, dengan tujuan untuk menyebarluaskan hasil penelitian, pengkajian, dan pengembangan bidang Fisika beserta dengan terapan ilmu fisika. Artikel yang dipublikasi dalam Jurnal FiSA dapat berupa Artikel Penelitian maupun Artikel Konseptual (non-penelitian).
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<![CDATA[ANALISIS TEGANGAN DI POROS ENGKOL YAMAHA RX KING TAHUN 2005 MENGGUNAKAN PERANGKAT LUNAK SOLIDWORK ]]>
<![CDATA[Emanuel G. N Dhey]]>;
<![CDATA[Ishak S. Limbong]]>;
<![CDATA[Matheus M. Dwinanto]]>
<![CDATA[ Jurnal Fisika : Fisika Sains dan Aplikasinya Vol 8 No 1 (2023): Jurnal Fisika : Fisika Sains dan Aplikasinya ]]>
Publisher : <![CDATA[Universitas Nusa Cendana ]]>
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DOI: 10.35508/fisa.v8i1.11816
<![CDATA[The crankshaft is one of the main components that converts the potential energy of the fuel into rotating power for the piston engine. Because in the process of working the crankshaft changes the piston's back and forth motion into a rotating motion of the shaft. To minimize the effects of damage that occurs due to various types of dynamic loads acting on the crankshaft components, the design process should first know the working stress distribution. Meanwhile, as a tool in analyzing it, Solidworks software is used. From the results of this analysis, the location or position of the damage due to too high a loading can be identified early. This the authors in this study want to raise a title, namely "Analysis of Stress in the Crankshaft Yamaha Rx-King Year 2005 Using Solidwork Software". Based on the results of the theoretical calculation with the radial force loading of 1.4 N, the bending moment is 10388.1 N / mm, the normal stress is 33.76 N / mm2 , the shear stress is 10.328 N / mm2, the maximum stress is 33.21 N / mm2, and the minimum stress is 3.55N / mm2. Based on the simulation results with solidwork software, the maximum stress is 4,83511e-007 N / m2. FOS (factor of safety) based on analysis using software obtained by 4.339e + 004 N / m2.]]>
<![CDATA[VISUALISASI FENOMENA HARMONIS DAN CHAOS PADA GETARAN TERGANDENG BERBASIS KOMPUTASI NUMERIK RUNGE KUTTA ]]>
<![CDATA[Leonora L. R. Trifina]]>;
<![CDATA[Ali Warsito]]>;
<![CDATA[Laura A. S. Lapono]]>;
<![CDATA[Andreas Ch. Louk]]>
<![CDATA[ Jurnal Fisika : Fisika Sains dan Aplikasinya Vol 8 No 1 (2023): Jurnal Fisika : Fisika Sains dan Aplikasinya ]]>
Publisher : <![CDATA[Universitas Nusa Cendana ]]>
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DOI: 10.35508/fisa.v8i1.11817
<![CDATA[Research has been carried out on the visualization of harmonic and chaos phenomenont on coupled vibration physcal case using the Runge Kutta numerical computation method with the aim of applying the first to fourth order Runge Kutta computation method to obtain a second order differential equation solution on coupled vibration system, calculating the displacement value of objects using computation method Runge Kutta order first to fourth, obtained a graph of the displacement of objects againts time in case of coupled vibration for harmonic and chaos states at certain step width values and compare the convergence of the Runge Kutta method from first to fourth order with the special analytical method. The solution of coupled vibration equation which is classified as a second order differential equation was quite difficulted to solve analytically, so the Runge Kutta computation method was used to solve it as an alternative solution. The results of the research showed that the harmonic state of the system was obtained when the displacement graph showed the motion of each pendulum which was constant with the pendulum displacement position with respect to time in the form of a sinusoidal graph at a value of C1 = 40 N/m, C2 = 30 N/m, C = 10 N/m, C = 0 N/m and the chaotic state was represented by a graph of the displacement of the pendulum with respect to time with an irregular pattern. In this case, it was found that the fourth order Runge Kutta method converged faster than the first to third order Runge Kutta method with the best results obtained at a step width value of 0,001. The fourth order Runge Kutta method also has a smaller approximation average error value from first to third order Runge Kutta method was on the fourth order Runge Kutta method and the avarage error values are , and on the Runge Kutta method of first to third order.]]>
<![CDATA[PEMODELAN DUA DIMENSI (2D) BAWAH PERMUKAAN PULAU ADONARA DENGAN DATA ANOMALI GRAVITASI ]]>
<![CDATA[K. K. Lesu]]>;
<![CDATA[Jehunias L. Tanesib]]>;
<![CDATA[Bernandus Bernandus]]>
<![CDATA[ Jurnal Fisika : Fisika Sains dan Aplikasinya Vol 8 No 1 (2023): Jurnal Fisika : Fisika Sains dan Aplikasinya ]]>
Publisher : <![CDATA[Universitas Nusa Cendana ]]>
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DOI: 10.35508/fisa.v8i1.11819
<![CDATA[Geophysical research has been carried out using the gravity method on Adonara island in east Flores Regency, East Nusa Tenggara. This study aims to determine the subsurface rock geological conditions of the research area using free air gravity anomaly data from GGMplus and ERTM2160. The data is reduced by atmospheric correction, simple bouguer correction, curvature correction to produce a complete bouguer anomaly. After correction, regional anomalies and residual anomalies are separated. Then 2-dimensional (2D) modeling is carried out using forward modeling and inversion modeling with Grav2DC software. The results of the study show that the subsurface geological conditions of Adonara island are dominated rock by andesite, granite, diorite, dolomite, gravel, sandstone, basalt, sekis, metamorphic, shale and lavas.]]>
<![CDATA[MENENTUKAN NILAI PERIODE, AMPLITUDO, FREKUENSI DAN MEMVISUALISASI GETARAN HARMONIK PADA PEGAS DALAM BENTUK GELOMBANG ]]>
<![CDATA[Heri Rismawan]]>;
<![CDATA[Muktamar Cholifah Aisiyah]]>
<![CDATA[ Jurnal Fisika : Fisika Sains dan Aplikasinya Vol 8 No 1 (2023): Jurnal Fisika : Fisika Sains dan Aplikasinya ]]>
Publisher : <![CDATA[Universitas Nusa Cendana ]]>
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DOI: 10.35508/fisa.v8i1.11820
<![CDATA[Simple harmonic motion is motion back and forth regularly through an equilibrium point with the number of vibrations in every second always the same or constant. This experiment focuses on one example of an elastic object, namely a spring. The response of the spring to the force is indicated by the increase in the length of the spring. The background of this harmonic vibration experiment is to explain the process of harmonic vibration of a spring which is visualized in waves with the aim of explaining the harmonic vibration of a spring which is visualized in a wave. The data collection method in this experiment only used 1 load, namely 2 variations of springs (single spring and series spring) with a distance of 2 cm, 4 cm, and 6 cm. Different values of A, y0, and c are obtained. From all the data that has been processed using the Orgin Arduino software application, it can be seen that the value of the amplitude is 0.46 cm-6.23 cm. The period value is 10.6 seconds-17.9 seconds and the frequency is 0.05 Hz-0.09 Hz. In addition, the initial phase value of -0.08 to -4.96 was also obtained. From the results of this experiment, the spring that has the largest amplitude value of 6.23 cm is a variation of the series spring with a deviation of 6 cm. While the spring which has the greatest period, frequency, and initial phase values is the variation of spring 1 with a deviation of 4 cm. Based on the experimental results show that, the vibrations that occur in the spring are different in the form of waves. This is because the distance and the spring used during the experiment affect the shape of the waves that occur.]]>
<![CDATA[PENGARUH DOPAN ZN PADA BAHAN BARIUM HEKSAFERIT TERHADAP UKURAN KRISTAL DAN SIFAT MAGNETIK ]]>
<![CDATA[Ahmad Fauzi]]>;
<![CDATA[Hernowo Widodo]]>;
<![CDATA[Murwan Widyantoro]]>
<![CDATA[ Jurnal Fisika : Fisika Sains dan Aplikasinya Vol 8 No 1 (2023): Jurnal Fisika : Fisika Sains dan Aplikasinya ]]>
Publisher : <![CDATA[Universitas Nusa Cendana ]]>
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DOI: 10.35508/fisa.v8i1.11821
<![CDATA[Barium hexaferrite material as magnetic material can be used for wave absorption applications. However, to make the absorber material, the material must be soft magnetic material. For now, the barium hexaferrite problem is still a hardmagnetic material. To form softmagnetic material modified by doping Zn metal into barium hexeferite. The purpose of this study was to determine the Zn Doping effect in barium hexaferrite material on crystal size and magnetic properties. Zn doping into barium hexaferrite (BaFe12-xZnxO19) with doping variation of Zn x = 0, 0.4, 0.6, and 0.8. The method used in this study is the mechanical millling method, while the crystal size test and magnetic properties use XRD characterization tools and Permagraph. The results showed that the smaller the crystal size of 151.509 nm if given Zn doping with variations in the addition of x = 0.8 and permagraph test results from doping variation Zn x = 0.8 obtained the magnetic properties in the form of coercivity values of 58.97 kA / m, the value magnetic remanent of 0.083 Tesla, magnetic saturation value of 0.1402 Tesla and the energy of the product is 1.2 kJ/m2. The test results concluded that the size of the crystals and the coercivity values were reduced if given the addition of excess Zn. this shows that Zn doping on barium hexaferrite is able to reduce the size of the crystal and its magnetic properties. Changes in crystal size and coercivity values become smaller indicating that the material is soft magnetic material.]]>
<![CDATA[RANCANG BANGUN ALAT DESTILASI AIR LAUT MENGGUNAKAN TENAGA MATAHARI SEBAGAI ALTERNATIF PENYEDIAAN AIR BERSIH ]]>
<![CDATA[Dewahastu Gaib]]>;
<![CDATA[Asri Arbie]]>;
<![CDATA[Dewa Gede Eka Setiawan]]>
<![CDATA[ Jurnal Fisika : Fisika Sains dan Aplikasinya Vol 8 No 1 (2023): Jurnal Fisika : Fisika Sains dan Aplikasinya ]]>
Publisher : <![CDATA[Universitas Nusa Cendana ]]>
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DOI: 10.35508/fisa.v8i1.11822
<![CDATA[Unfortunately, there has been a great worry about clean and healthy water for human consumption lately. Even though 2/3 of the earth's surface is covered by water, the access to safe water is only concentrated in certain areas. In Indonesia, water scarcity is increasing each year. Recent data on freshwater resources possessed by all countries in the world shows that Indonesia is ranked 51st with the highest risk of water scarcity (40-80%). There are several methods to gain access to safe water, one of which is the use of distillation equipment. This research aims to produce a design of freshwater distillation equipment from seawater by utilizing solar radiation towards the quantity of freshwater and to determine the quality of freshwater from the results of distillation which include water pH, salinity, and TDS tests. The research method is done by heating sea water in the distillation equipment using solar radiation. Findings reveal that the average solar intensity of 1608.25 (lux) and the ambient temperature of 38.5 °C can produce an average volume of freshwater of 336.75 ml per day from the incoming seawater volume of 2000 ml. The water quality produced has a pH of 6.5, a salinity of 0.2 ppt, and a TDS of 152 mg/L.]]>
<![CDATA[ESTIMASI INTENSITAS RADIASI MATAHARI DENGAN MENGGUNAKAN JARINGAN SYARAF TIRUAN BACKPRPAGATION DI KOTA JAYAPURA ]]>
<![CDATA[Presli Panusuanan Simanjuntak]]>;
<![CDATA[Krisnandi Pandu Wibowo]]>
<![CDATA[ Jurnal Fisika : Fisika Sains dan Aplikasinya Vol 8 No 1 (2023): Jurnal Fisika : Fisika Sains dan Aplikasinya ]]>
Publisher : <![CDATA[Universitas Nusa Cendana ]]>
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DOI: 10.35508/fisa.v8i1.11823
<![CDATA[Eastern Indonesia has enormous potential for solar energy. For the utilization of this energy, data on the intensity of solar radiation is needed that can describe the availability of solar energy that can be utilized. Information on the availability of solar energy will be used to estimate the intensity of solar radiation, so that the use of solar energy can be optimal. In this study, the intensity of solar radiation was estimated. The data used to estimate the intensity of solar radiation were air temperature, humidity, duration of solar radiation, and rainfall. The method used in this study is an artificial neural network (ANN) with backpropagation training. This study uses variations in the number of neurons in 1 hidden layer to get the best group based on the RMSE value and correlation. The best group from each training simulation is then used to estimate solar radiation. The estimation results for the city of Jayapura have an RMSE value of 1,970 kWh/m2. The solar radiation received in the Jayapura area has a high enough potential to be used as alternative energy with an average monthly radiation value of 4,5 kWh/m2.]]>
<![CDATA[PEMULIAAN KACANG TANAH LOKAL JUMBO TIPE TEGAK ROTE NDAO DENGAN METODE IRRADIASI MULTIGAMMA UNTUK MENDAPATKAN VARIETAS BAKAL UNGGUL ]]>
<![CDATA[Novinda D. M. O. Malelak]]>;
<![CDATA[Bertholomeus Pasangka]]>;
<![CDATA[Christin Mbiliyora]]>
<![CDATA[ Jurnal Fisika : Fisika Sains dan Aplikasinya Vol 8 No 1 (2023): Jurnal Fisika : Fisika Sains dan Aplikasinya ]]>
Publisher : <![CDATA[Universitas Nusa Cendana ]]>
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DOI: 10.35508/fisa.v8i1.11824
<![CDATA[The research has done using Multigamma Irradiation Method for genetic engineering on local jumbo peanut plants of the upright type Rote Ndao. This research has done in Oesapa Barat, Kelapa Lima District, Kupang City, East Nusa Tenggara. This study is to test the accuracy of the dose for improvement of local jumbo varieties of upright type peanuts irradiated with standard multigamma and to determine tolerance of irradiated mutant varieties to several environmental physical characteristics that are limited to temperature and also the humidity that are not suitable for local peanut growth conditions. The results showed that the right dose to obtain high produce of varieties is dose 4000. The superior characteristics obtained from a dose of 4000 rads included the fastest growing time, the highest number of pods per tree, the highest number of seeds in one pod, the highest protein content, the highest fat content, and the highest mass per 150 seeds. Humidity and temperature of the soil and air in the area planted with Rote Ndao jumbo local peanuts are tolerant of several environmental physical characteristics.]]>
<![CDATA[IDENTIFIKASI KANDUNGAN CaCO3 DALAM BATUAN KAPUR DI DESA MANULAI I MENGGUNAKAN METODE XRF DAN XRD ]]>
<![CDATA[Kristantia Mida Subah]]>;
<![CDATA[Redi Kristian Pingak]]>;
<![CDATA[Minsyahril Bukit]]>;
<![CDATA[Albert Zicko Johannes]]>
<![CDATA[ Jurnal Fisika : Fisika Sains dan Aplikasinya Vol 8 No 1 (2023): Jurnal Fisika : Fisika Sains dan Aplikasinya ]]>
Publisher : <![CDATA[Universitas Nusa Cendana ]]>
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DOI: 10.35508/fisa.v8i1.11825
<![CDATA[This study aims to determine the compounds contained in limestone, identify the content and crystal phase of CaCO3 in limestone and determine the effect of heating temperature on the CaCO3 crystal phase in limestone using XRF and XRD methods. XRF test results show that the compounds contained in limestone in Manulai I village are CaO, Nb2O5, Cr2O3, MoO3, In2O3, SnO2, Sb2O3, RuO4, dan Na2O and XRD test results showed that the crystal phase of CaCO3 at a temperature of 5500C to 7500C was in the form of calcite. In limestone calcined at different temperatures, the intensity increases, this can be interpreted that the higher the calcination temperature, the higher the crystallinity.]]>
<![CDATA[ESTIMASI SEBARAN AIR LINDI BAWAH PERMUKAAN BERDASARKAN DATA ELEKTROMAGNETIK PADA AREA TEMPAT PEMBUANGAN AKHIR (TPA) NOINBILA KABUPATEN TIMOR TENGAH SELATAN ]]>
<![CDATA[Hadi Imam Sutaji]]>;
<![CDATA[Hery Leo Sianturi]]>;
<![CDATA[Ali Warsito]]>
<![CDATA[ Jurnal Fisika : Fisika Sains dan Aplikasinya Vol 8 No 1 (2023): Jurnal Fisika : Fisika Sains dan Aplikasinya ]]>
Publisher : <![CDATA[Universitas Nusa Cendana ]]>
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DOI: 10.35508/fisa.v8i1.11827
<![CDATA[This research study is the determination of estimated distribution of subsurface leachate based on electromagnetic data in the Noinbila Final Disposal Site (TPA) area and its surroundings in South Central East Regency. The data used in the form of conductivity and susceptibility values of the measurement results of the GF instrument CMD-4 at coordinate points at certain elevations. The data is processed and displayed in 2D and 3D contour maps with the help of several related software. The results of the analysis provide information that the Noinbila landfill area and its surroundings which are divided into areas A, B, C, D, E and F are not all polluted by leachate below the surface, but only areas D and F are suspected to be polluted. The potential for contamination of areas A, B, C and E below the surface is still possible because these areas have subsurface geology in the form of coral limestone. The potential for this pollution, apart from below the surface, is also possible on the surface because areas A, B, C and E have a lower elevation dominance than areas D and F. For this reason, this potential must be avoided by optimally handling and managing waste. If the handling and management of the waste is related to the efforts of the Noinbila TPA management, then it has been done even though it is still not optimal. The form of handling efforts as a form of waste management is in the form of matters related to the maintenance and repair of the TPA and its facilities and infrastructure, handling of waste before and after at the TPA and leachate water flow through pipelines to the holding pond, stabilization pond and leachate treatment pond.]]>
