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INDONESIA
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains
Published by Universitas Riau
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Core Subject : Engineering,
Engineering
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Articles 3,145 Documents
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Inspeksi Kualitas Untuk Pendeteksian Cacat Bentuk Pada Botol Minuman Plastik Berbasis Visi Komputer Faisal Karim; Feri Candra
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Product quality inspection system plays an important role in industrial production. Manual inspection process based on human tends to have several deficiencies in recognizing defects, such as workers subjectivity, inconsistency of work, and boredom level. Therefore, this paper presents an automated computer vision systems of plastic bottle shape defect detection for quality inspection system as a solution for the problem that has been raised. In this study, Mizone Lychee Lemon 500ml was used as sample. Digital Image Processing Technique is used to extract shape feature of plastic bottle. Through this technique, the defects of the bottle structure is described from the feature set such as Area, Perimeter, Major Axis Length, and Solidity. Then, the bottle is classified whether it is passed or rejected from the estimated parameters using Backpropagation Neural Network Method. A total of 100 data of bottle images are used in this study, consisting of 70 Training Images and 30 Testing Images. The result of this study is that the system can be used to differentiate plastic bottles according to shape with 100% accurary rate. Keywords: Quality Inspection, Plastic Bottle, Computer Vision, Digital Image Processing, Backpropagation Neural Network
Pengaruh Rasio Limbah Lumpur IPAL Pabrik Minyak Sawit Dan Pelepah Kelapa Sawit Terhadap Analisa Proksimat Pada Pembuatan Briket Zostria Hanijah; Elvi Yenie; Syarfi Daud
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
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Abstract

Briquettes are alternative solid fuels that require development in the manufacturing process. The purpose of this study was to determine the effect of the ratio of sludge to palm fronds and particle size in the manufacture of sludge briquettes. This research was carried out by the process of carbonization of sewage sludge at 550OC for 60 minutes and the utilization of palm oil as an adhesive. The variables used are 40, 60 and 80 mesh particle size and 90:10%, 80:20%, 70:30%, 60:40% and 50:50% of silt sludge waste ratio. Testing of briquette characteristics of oil palm sludge include moisture content, ash content, volatile matter, carbon content, calorific value, compressive strength and duration of flame. The results showed the best briquette quality obtained on briquettes with 60 mesh particle size with 50:50% ratio with the highest calorific value of 3752,74 cal/gr. The best flame briquette reaches 4.41 minutes in briquettes with a particle size of 80 mesh and a ratio of 50:50% while the best compressive strength reaches 0.0102 kg/cm2 in 80 mesh particle size. The difference in the size of the briquette particles showed an increasing tendency in briquette flame duration. Keywords: briquette, sludge, particle size, flame duration, compressive strength
Pengaruh Konsentrasi Filler Serat Daun Nanas (Ananas comosus) Dan PVA (Polivinil Alkohol) Pada Sintesis Bioplastik Dari Pati Biji Nangka Pane, Dewi Sriana S; Amri, Idral; Zultiniar, Zultiniar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
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Abstract

Pineapple leaf fiber consists of about 70-80% wt cellulose giving its high tensile strength and elastic modulus for bioplastics. To increased the elongation of bioplastic, starch has to be mixed with other synthetic polymers such as polyvinyl alcohol (PVA). The aimed of this research was to determine the effect of various pineapple leaf fiber and polyvinyl alcohol (PVA) concentration to the mechanical properties (tensile strength, elongation, modulus young and tear strength), water uptake, biodegradation and morphology. Bioplastics were made by mixing of starch of jackfruit seed, water, filler and plasticizer with variation of fiber were 0 (%w/w), 2 (%w/w), 4 (%w/w), 6 (%w/w), 8 (%w/w), and 10 (%w/w) and ratios starch: polyvinyl alcohol (PVA) were 1:1 and 1:1,5. The results revealed that the filler fiber and PVA gave an impact to mechanical properties of bioplastic, the best mechanical properties was on bioplastic with composition starch:PVA 1:1 and filler 8 (%w/w) with tensile strength 15,79 MPa, and modulus young 1967,01 MPa and tear strength 3,4021 Kgf. The best water uptake of bioplastic is 32,5 % and the fastest degradation time on bioplastic with composition fiber 10 (%w/w) and ratio starch:PVA 1:1,5 in 7 days. SEM analysis showed that filler distribution was not spreading evenly on matrices. Keywords: jackfruit seed, bioplastic, starch, polyvinyl alcohol, pineapple leaf fiber
Sintesis Hidroksiapatit Dari Precipitated Calcium Carbonate (PCC) Terumbu Karang Menggunakan Metode Hidrotermal Dengan Variasi Temperatur Reaksi Yunus Olivia Novanto; Yelmida Azis; Ahmad Fadli
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
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Abstract

Coral reefs that have been damaged so far are not utilized and only pollute the coast. Even though coral reefs are composed of calcium carbonate compounds which can be used for the synthesis of hydroxyapatite, an important mineral found in human bones. The purpose of this study was to synthesize HAp from precipitated calcium carbonate (PCC) coral reef using the hydrothermal method, determine the effect of temperature on the characteristics of HAp and determine the best temperature for making HAp using the hydrothermal method. Coral PCC and (NH4)2HPO4 were reacted with an initial Ca/P ratio of 1,77 and the reaction temperature varied from 110oC, 120oC, 130oC, 140oC, 150oC, 160oC and 170oC for 14 hours. Then the crude HAp was washed using distilled water to pH 7 and dried at 110oC. The synthesized hydroxyapatite was then analyzed using X-ray Diffraction (XRD) and Scanning Electron Microscopy-Electron Dispersive X-ray (SEM-EDX). The results of the XRD analysis showed that the diffractogram peak of the synthesized HAp was similar to the standard with the best crystallinity of 82,28% at 140oC, while the smallest crystal size was 19,5 nm at 170oC. For the results of SEM-EDX analysis, the synthesized HAp has a uniform particle size with the final ratio of Ca/P at 140oC is 1,76 and at 170oC is 1,96. Based on those analysis, the hydroxyapatite synthesized from PCC coral using the hydrothermal method has the best characteristics at the reaction temperature of 140oC and has met the ISO 13779-2-2008 standard as a bone impant.Keywords: coral, hydroxyapatite, hydrothermal, PCC, temperature.
Sifat Mekanik Bata Beton Dengan Penambahan Styrofoam Steffani, Anggia; Djauhari, Zulfikar; Ismeddyanto, Ismeddiyanto
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
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Technological advancements have directed infrastructure development in light and strong materials. Styrofoam can be used as a substitute for fine aggregates in concrete bricks, and can reduce the weight of concrete bricks with strengths that still meet the current standards The purpose of this study was to examine the effect of adding styrofoam to the mechanical properties of concrete bricks. In this study, the composition of the mixture used is 1 cement : 3 sand with variations of styrofoam as a substitute for sand at 0%, 5%, 10% and 15%. The size of the test object carried out in this study was 39x9x10 cm, the number of test items were 12 pieces and the treatment of the specimen was done by covering the test object with wet burlap for 28 days. The results showed that, the average compressive strength of the specimens contained 0% of styrofoam was 64.83 kg/cm2, 5% of styrofoam was 54.24 kg/cm2, 10% of styrofoam was 49.45 kg/cm2, and 15% of styrofoam was 45.75 kg/cm2. Furthermore, the compressive strength of specimens contained 0%, 5%, 10% and 15% of styrofoam was met the grade III of the concrete bricks criteria suggested by SNI 03-0349-1989. Keywords: Styrofoam, Concrete Brick, Compressive Strength.
Penerapan Preseden Desain Frank Lloyd Wright Pada Panti Jompo Di Kota Pekanbaru Faudya Agiasty; Yohannes Firzal; Gun Faisal
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
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The advancement of the health sector has an impact on life expectancy which is getting higher and along with the increase of the elderly population. The City of Pekanbaru has the highest projection of the number of elderly people in Riau Province. This is a problem because in Pekanbaru only has a nursing home that is out of balance with an increase in the number of elderly people so that a nursing home is needed that provides an alternative place of residence for the elderly. Nursing homes with Frank Lloyd Wright's organic architectural design precedents provide a decent atmosphere for the residents, not just a home for the elderly but by making art created by the aesthetics of building design. Frank Lloyd Wright's design precedents were used as an effort to realize the design of nursing homes that could stimulate the elderly by bringing them closer to nature. Therefore, a nursing home is needed in the city of Pekanbaru with the design precedent of Frank Lloyd Wright. Keywords: Nature, Organic Architecture, Frank Lloyd Wright, Nursing Home
Analisis Pasang Surut Di Pantai Dumai Menggunakan Metode Least Square 15 Piantan Arif, Muhammad; Hendri, Andy; Suprayogi, Imam
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
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Least square is a method of tidal harmonic analysis that ignores meteorological factors in analyzing and predicting tidal elevations. This study analyzes the accuracy of tidal elevation predictions based on the initial date of the simulation. The analysis used 15 days tidal data from Pelindo Port C, Dumai. Furthermore, the results of the study were compared with the results of the most recent study, namely predictions of tide admiralty 15 days in the same location. The results of this study indicate that the results of the 15 days least square method prediction are more accurate than the admiralty method. The RMSE value from the least square method calculation gives the smallest Root Mean Square (RMSE) value of 34,56 cm, while the admiralty method is 71,38 cm. The most appropriate time to take primary data in the field for the purposes of tidal predictions is at the beginning of the third week of each month in the hijri calender or when the half moon phase.Keywords : least square method, tidal prediction, RMSE
Pengembangan Mesin Belt Grinder Dengan Metode DFMA (Design For Manufacturing And Assembly) Atmaja, Hikmah; Arief, Dodi Sofyan
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
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Abstract

DFMA is defined as the design of a product or component which can facilitate the process of manufacturing and assembly process with other components to become a unified product. The grinding is a process that plays an important role in the production process or machining process. The belt grinder machine has a working principle by turning a belt-shaped sandpaper stacked on 4 rollers driven by an electric motor. This belt shaped round sandpaper is used to grind a surface such as drill, lathe tools and knives. Development of a simpler design is needed to increase the efficiency of time reduction in the assembly of belt grinder machines. Design development does not change the functionalities of each component of the product. The beginning of study, calculating the efficiency assembly of belt grinder product owned by Suheri's (2018). The next is development process of combination and elimination of components that do not affect the added value of the product. Suheri's belt grinder (2018) has 64 components with assembly efficiency of 7.29% and the results of engine design development have 43 components with assembly efficiency of 9.59%. Increase in assembly efficiency by 2.3% after development. Keywords: DFMA, grinding, belt grinder, assembly efficiency
Pengaruh Massa Dan Waktu Kontak Terhadap Penyisihan Zat Warna Air Gambut Menggunakan Adsorben Sekam Padi Putri Ayu Puspita; Syarfi Daud; Edward Edward
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
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Peat water is surface water that is blackish brown in color which requires effective and efficient processing to be suitable for use by the community. Various types of adsorbents continue to be developed, one of which is the adsorption of rice husk. The purpose of this study was to determine the removal of dyes in peat water, calculate the adsorption capacity and compare the results of the analysis with the quality standards of the Republic of Indonesia Ministry of Health No. 416 / MENKES / PER / IX / 1990. The fixed variable used in this study is stirring speed 100 rpm and particle size +170 mesh. The independent variables used consisted of variations in the mass of the adsorbent 1.5; 2; 2.5; 3 gr and stirring time 30, 60, 90 and 120 minutes. Dyestuff removal efficiency 57.16% at 3 gr adsorbent mass with 60 minutes contact time. The highest capacity for adsorption of dyestuff was achieved at a mass of 1.5 g with a contact time of 60 minutes of 94.12 mg / gr. The results of the study are not in accordance with the Minister of Health Regulation No.416 / MENKES / PER / IX / 1990, the results obtained exceed the quality standard of 687 PtCo. Keywords: Adsorption, Adsorbent, Peat Water, Rice Husk.
Pengaruh Nisbah Dan Suhu Pencampuran Terhadap Karakteristik Campuran Aspal Karet Alam Kompo (Cup Lump) Yanny Sartika; Irdoni Irdoni; Bahruddin Bahruddin
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
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Asphalt modified polymer (AMP) is used to increase the resistance of asphalt to changes in temperature by increasing the stiffness of the binder/binder at high temperatures and reducing stiffness at low temperatures at the same time. This study aims to study the effect of ratio and temperature of rubber cup lump on the characteristics of asphalt and determine the ratio and temperature of the best rubber cup lump for the manufacture of asphalt modified polymer. The asphalt used type of bitumen pen 60/70 Pertamina. Asphalt modified polymer is made by mixing cup lump with asphalt at a mixing temperature of 150 oC and 170 oC for 30 minutes. Cup lump ratio varied by 4%, 6%, 8%, 10% and 12%. Testing for modified asphalt includes parameters: penetration, softening point, weight loss and stability of the Marshall. Testing is in accordance with the 2012 Bina Marga General Specifications standard. Based on the research results obtained, the best ratio and temperature is 12% and mixing temperature 170 oC with a penetration value of 52.4 dmm, softening point of 63.55 oC, weight loss of 0.068 and the stability of the Marshall is 1904.4 kg.Keywords: asphalt modified, cup lump, ratio, stability, temperature

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