Browsing by Author "Emrinaldi, Tengku"
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Item ANALISA FREKUENSI ALAMI DAN REGANGAN OLEH KENDARAAN BERMOTOR MENGGUNAKAN FIBER BRAGG GRATING(2016-02-01) Tan, Michael; Saktioto; Emrinaldi, TengkuVibration-induced strain and natural frequency of Siak I Bridge were investigated in this research. A Strain was calculated from laser power measured by powermeter. Natural frequency was calculated using manual calculation with single-girder analysis. The research has been done at five measurement points at Siak I Bridge. The five measurement points were 10 m, 87,5 m, 175 m, 265 m, dan 287,5 m from the one point of the bridge in Senapelan Subdistrict. The car used to induce vibration was Xenia and the power measurement was conducted in predawn. The instruments used were laser diode, Fiber Bragg Grating (λB = 1550 nm), and powermeter. The results showed that five measuring points almost experienced strain below 20με. The natural frequency of the five measuring points at Siak I Bridge were 2,68 Hz, 2,68 Hz, 2,48 Hz, 2,99 Hz, and 2,68 HzItem ANALISA HASIL POLA FRINJI DENGAN KUALITAS CERMIN DATAR MENGGUNAKAN METODE KONTAK LANGSUNG DAN INTERFEROMETER MICHELSON(2016-02-01) Siregar, Abdul Hadi; Minarni; Emrinaldi, TengkuOptical components are found in everyday life like mirrors and lenses.For different types of measurement and research optical components characteristics of are very vital, quality of mirror such as surface quality and flatness are very important. In this research there are two systems were built to analyze the correlation between fringes and the quality of the mirrors, using the method of direct contact and Michelson interferometer method. The direct contact method was constructed using a white LED, an optical flat as the reference mirror, and 3 MP CMOS camera. The Michelson interferometer method was constructed using a diode laser source with the wavelength of 650 nm,where one of it’s mirror was an optical flat as a reference. The samples used were 3 mirrors with a 1/10 ⋋ precision, 4 mirrors with a 5 ⋋precision, and 2 mirrors with 4-6⋋ precison. The fringes were recorded with CMOS camera and the data was then processed using image processing software by measuring the fringe distance in the form of Pixel. The mirror with 1/10 ⋋ precision shows that the amount of fringes are greater and straighter with the average fringe amount of 8 fringes, the fringes from the mirror with the precision 5 ⋋the average fringes amount are 5 fringes and the total average fringes with precisionof 4-6 ⋋ are 7 fringes. The results showed that at contact method, 1/10⋋ mirrors had lesser fringi number than 5⋋ mirrors i.e 4 and 5 respectively and under fringe distancethan 5⋋mirrors which were 120 pixel and 161,3 pixel. The result showed for interferometer method, the fringe numbers were for 1/10 ⋋ than for 5⋋,and 4-6⋋ which were7,5, and 6 respectively while the fringe distances were smaller for 1/10⋋ mirror than 5⋋and 4-6⋋ mirrorItem ANALISA PENGARUH SUDUT PENYINARAN TERHADAP GRAY VALUE PADA POLA SPEKEL BUAH APEL MENGGUNAKAN METODE LASER SPECKLE IMAGING(2016-02-01) Siregar, Rasmiana Poja; Minarni; Emrinaldi, TengkuSpeckle patterns are formed from scattered coherent lights which interfere each other when an object surface is illuminated by a coherent light. Speckles formed on the surface of biological object are called biospeckle. Laser Speckle Imaging (LSI) is a non-destructive imaging technique that can be used to detect the optical signal from biological tissue. A simple LSI system is consist of three main components, which are a laser as a light source, a sample, and a light detector. In this study, LSI system has been constructed using He-Ne laser as a light source, Fuji apples and Washington apples (Red Delicious) as samples and CMOS camera as detector. Angles of light incident on the samples were varied that was 30o, 45o, and 60o angles in order to know the optimum angle that gave the highest speckle patterns intensity. The speckle patterns represented by lever of gray value were analyzed using Image-J software. The result showed that the level of maximum gray value depended on the angle of illumination. The bigger the irradiation angle was the smaller the maximum of gray value. The maximum gray values Intensity Fuji apples were higher than Washington apples for each angle. The level of gray value maximum of speckle pattern apples at an angle of 30o consecutive were 127,6523 a.u for Fuji apples and 99,9951 a.u for Washington apples, at an angle of 45o were 111,0635 a.u for Fuji apples and 83,5215 a.u for Washington apples and at an angle of 60o were 102,8457 a.u for Fuji apples and 66,9639 a.u for Washington apples. That was because the surface of Fuji apples more roughers than Washington apples.Item APLIKASI METODE FLUORESCENCE IMAGING UNTUK ANALISA KERUSAKAN MEKANIK REKAYASA PADA BUAH TOMAT(2016-02-01) Ningrum, Asdilita Okta Guma; Minarni; Emrinaldi, TengkuIdentification of abnormalities and damages on tomato fruits in post harvest is still conducted manually by observing their physical appearance. This research used fluorescence imaging to identify damages on some tomatoes which were treated intentionaly has been done. The tomatoes were bruished by hand pressure and soaked in hot boiling water. Fresh tomatoes without treatment were used as comparison. The fluorescence imaging system consisted of some optical components such as a lens, a filter, a 3mp CCD camera. There were two diode lasers with different wavelengths i. e 650nm and 532nm. The fluorescence intensities of the tomatoes after shoned by the laser light were measured from the RGB plot by Image-J software of images captured by the CCD camera. The results showed that the fluorescence intensities obtained from a red laser diode of the samples without treatment, the samples bruished by hand pressure, and the samples were soaked in hot boiling water were 72.3 a.u, 52.1 a.u, and 67.1 a.u. For the green laser diode with tomatoes without treatment, the sample bruished by hand pressure, and the samples soaked in hot boiling water were 93.9 a.u, 133.4 a.u, and 94.8 a.u. The tomatoes bruished by hand pressure has the highest the lowest when fluorescent intensity when induced by green laser diodes, and induced by red laser diodesItem ELASTISITAS LOGAM TIMBAL (Pb) PADA TANAH DI SEKITAR SUMUR WARGA DI DESA SEBANGAR KECAMATAN MANDAU KABUPATEN BENGKALIS(2013-06-13) Fitrillisia, Githa; Emrinaldi, Tengku; SugiantoThe existence of mineral components or heavy metals affect the basic properties of soil in term of toxic compound having function of consisting density, shear strength, water content, and elasticity. Plumbum (Pb), a heavy metal is one of inorganic materials that is abundantly contained in soil. This paper aims to determine the elasticity of Pb metal in the ground the area oil, soil type, and water content in Sebangar village Sub - district Mandau district Bengkalis. Soil samples were taken at two wells with a distance 50 m and 100 m approximately from the pumping petroleum, and two points which embeded measurament is set with a distance of 5 m and 10 m from each well and the depth of 50 cm, respectively. Soil samples printed cylindrical shape with a diameter of 5 cm and a length of 10 cm. The Elasticity can be determined by measuring the propagation time of the primary and secondary waves that propagate on land using Sonic Wave Analyzer (SOWAN) while consentration of Pb was determined using a Atomic Absorpance Spectrometer (AAS) Shimadzu AA-7000. The results show that the greater consentration of Pb has the greater the elasticity is obtained. The consentration of Pb and the elasticity in wells I and II is 5 m from the well, well I has Pb 0,7410 ppm and elasticity 8,1119x107 N/m2 for 10 m Pb 0,6777 ppm and elasticity is 6,2902x107 N/m2. Well II at 5 m has consentration of Pb 0,7501 ppm and elasticity is 4,6815x107 N/m2 for 10 m Pb 0,7151 ppm and elasticity is 4,4393x107 N/m2. According to Ministry of State for Population and Enviromental of Indonesia and Dalhousie University Canada the critical limit of Pb in the soil, the clay in village Sebangar Subdistric Mandau distric Bengkalis under the limits <100 ppm has been found.Item Karakterisasi Material dan Spektroskopi Impedansi(2013-04-16) Umar, Lazuardi; Yanuar; Emrinaldi, TengkuAbstract— This work present a low cost soil moisture sensor based on impedance spectroscopy by means of magnitude ratio and phase difference detection method. For this purpose, a probe which uses a simpliried impedance measuring system to determine soil water content has been designed. The circuit sweeps at pre-programmed frequencies from 10 KHz to lOMHz with lOmVac amplitude. A local inceptisol soil of East Sumatra was especially selected for this investigatioa because measurements of soil moisture in peat swamp area were generally reported as difficult ones. A sample at defined soil moisture of 2%, %"/», 15% measured using commercial soil sensor Lutron PMS-7i4 was characterized. A corrected model has been developed in order to reject the frequency influence upon the measurement. The results obtained by the sensor show good results with an overall mean error of0.207% in impedance.Item MENENTUKAN POLA PENYEBARAN LOGAM BERAT (Cu, Fe, Zn) DI SUNGAI SIAK DENGAN MENGGUNAKAN SPEKTROFOTOMETER (AAS)(2013-03-05) Salam, Abdul Haris; Sugianto; Emrinaldi, TengkuA study concerning the determination of the distribution patterns of heavy metals (Cu, Fe, Zn) in Siak River has been done using a spectrophotometer (AAS). This research used an experimental method that is focused on the study of the pattern of spread of heavy metals Cu, Fe and Zn. The process was started by taking samples at 5 locations, then filtered with Whatman 40 Filter 0,45 μm and added HNO3 to dissolve the metals contained in the water sample, further analysis was undertaken using spectrophotometer (AAS) to determine the absorbance of each metals in water sample and standard solutions. Based on the data of standard solutions. Regression curves can be set up to determine the concentration of each metal. Results of water sample analysis showed that the concentration respectively of Cu, Fe and Zn was 0,0147 ppm, 0,0239 ppm and 1,9854 ppm. Based on water quality standards released by Unit Pelaksana Teknik Pengujian Dinas Pekerjaan Umum Provinsi Riau, the concentration of Cu and Zn contained in the Siak river water samples are safe for consumption for the maximum allowable limit, there are 0,02 ppm for Cu and 0,05 ppm for Zn. Another case with the Fe concentrations, that exceeds the maximum allowable concentrations for drinking in the amount of 1,9854 ppm from 0,3 ppm. After assessment, the safety distance to use the water of Siak River is more than 24,5 meters from the source of the wasteItem PENENTUAN KOEFISIEN ABSORPSI GELOMBANG BUNYI DARI KERTAS KARDUS(2013-03-05) Siregar, Wahyuddin; Emrinaldi, Tengku; Tambunan, WalfredA study concerning the absorption of acoustic waves using acoustic panels made from corrugated paper. In this study about absorption of acoustic waves has been carried out by measuring the sound absorption coefficient using corrugated paper as raw material for acoustic panels. The study was conducted by direct measurement in the laboratory using acoustic instruments and measurements obtained from the value level of intensity and level of initial intensity after passing through the material, then the data is equalized using a comparison between the level of intensity of the sound absorbed by the level of intensity of sound that arrives at the surface of the material using Excel and SPSS program to get the value of sound absorption coefficient on the tested material. Material thicknesses used are 0.5 cm to 2 cm, while the frequencies used are 125 Hz, 250 Hz, 500 Hz, 1000 Hz, 2000 Hz and 4000 Hz. Based on these results, it can be concluded that the highest coefficient was 0.37 and the lowest result was 0.04 which each value coefficient is related to frequency of 2000 Hz with a thickness of 1 cm and a frequency of 125 Hz with a thickness of 0.5 cmItem PENENTUAN KUALITAS AIR SUNGAI DAN AIR SUMUR SEKITAR SUNGAI SIAK BERDASARKAN SIFAT LISTRIK AIR PADA SUHU 200 C MENGGUNAKAN MULTITESTER(2016-02-01) Simbolon, Lundu F; Syech, Riad; Emrinaldi, TengkuA study concerning the determination of the quality of river water and well water around the river Siak using the experimental method has been investigated. This research was conducted by measuring the electrical properties of water at a temperature of 20 C. The type of water used were water streams, water dug wells and water wells drilled in obtaining seven points. Measurement of the electrical properties of water was done by using multitester associated with power suppy, the plate of Copper (Cu) and Zinc (Zn) as a conductor, and the glass beaker as a container for the sample. The measurement will show voltage and current values. Based on voltage and current values, they can calculate the value of the electrical properties of each sample. Results of river water has a resistance value of 2255.46 Ω, resistivity of 213.14 Ωm, conductivity of 0.00530 (Ωm)-1, and power of 3.81 x 10-5 W. The electrical properties of best water wells dug well is six with a resistance value of 3136.46 Ω, resistivity 296.39 Ωm, conductivity of 0.00345 (Ωm)-1, and power of 7.85 x 10-5 W. Based on the results, the value of the electrical properties of the best water is the average electrical properties of water well three (drilled wells) with a resistance value of 3538.61 Ω, the electrical resistivity value of 334.39 Ωm, the electrical conductivity value of 0.00341 (Ωm)-1, and electric power of 4,76x10-5W. The water is suitable for consumption having a resistivity of 3x103 Ω, and the electrical conductivity of (300 to 500) x10-6 (Ωm)-1. Based on the standard resistivity and electrical conductivity, the river and well water samples are unfit for human consumption because the values are still far from the exposure limits.Item PENENTUAN NILAI TINGKAT KEMAGNETAN DAN SUSEPTIBILITAS MAGNETIK ENDAPAN PASIR BESI SEBAGAI FUNGSI KEDALAMAN DI PANTAI ARTA DAN PANTAI KATA PARIAMAN SUMATERA BARAT(2016-05-19) Marcillina, Lenny; Erwin; Emrinaldi, TengkuThe measurement of the magnetic degree and magnetic susceptibility of iron sand as a function of depth in Arta and Kata beach Pariaman West Sumatera has been carried out. The sample was dried thoroughly before being processed by iron sand separator. Prior to magnetic measurement, it was preparared a solenoid of 400 turns with the length of 9,8 cm, and diameter of 2,7 cm. The total magnetic induction consisted of iron sand concentrate as a core of solenoid was measured as a funcion of current (2-10 A) and horizontal distance (1-5 mm) applied to the solenoid using probe magnetic Pasco PS 2162. In this research, it was found that the magnetic degree of iron sand increased as a function of the sample depth for both locations. However, the increment of the magnetic degree was larger for Kata beach compared to that of Arta beach. It was also found that the total magnetic induction of the solenoid increased as electric current of the solenoid was increased, and the total value of magnetic induction decreased as a function of the horizontal distance. Moreover, the highest value of magnetic susceptibility was obtained from Arta beach at a depth of 40 cm with the value of 5,72 x 10-4 m3 / kg followed by the value of the magnetic susceptibility of 4,65 x 10-4 m3 / kg for Kata beach at a depth of 80 cm. The obtained magnetic susceptibility from both locations were lied in the interval of 0,001 x 10-4 m3 / kg to 11 x 10-4 m3 / kg which is the magnetic susceptibility of hematite (Fe2O3) and magnetite (Fe3O4).Item PENENTUAN NILAI TINGKAT KEMAGNETAN DAN SUSEPTIBILITAS MAGNETIK PASIR DAN DEBU SEPANJANG JALAN UTAMA DI KOTA PEKANBARU(2016-05-19) Driani, Iin; Erwin; Emrinaldi, TengkuThe magnetic degree and susceptibility of sand and dust along main roads in Pekanbaru, such as Arifin Ahmad, Imam Munandar, Naga Sakti, Soebrantas, Sudirman and Tuanku Tambusai has been determined. The mass of samples taken for each location was 8 kg. The iron contained of the sample was separated from sand and dust using iron sand separator. The method used in this study was the experimental method. Magnetic induction of the sampel was measured using Magnetic Probe Pasco 2162. In order to measure total magnetic induction of the sample, it is necessary prepare a solenoid with dimentions of 360 turns, with a diameter of 2.1 cm and a length of 8 cm. Total magnetic induction was measured as a function of applied current (2, 4, 6, 8, 10 A) and the horizontal distance (1, 2, 3, 4, 5 mm). The results of this study showed that the highest and lowest levels of magnetic degree originated from sand and dust along Soebrantas and Tuanku Tambusai roads whose value are respectively 2.375% and 0.625%. The magnetic susceptibility values along Arifin Ahmad road was 4.04 x 10-4, which is the the highest among the other roads, while the lowest value of the magnetic susceptibility originates from Tuanku Tambusai road, that was 3.23 x 10-4. These values lied in the interval of the values of magnetic susceptibility of magnetite, maghemite and hematite that is 0.001 x 10-4 to 11 x 10-4, which means that the magnetic susceptibility of each sample found consist of magnetite Fe3O4 particles