Direktori jurnal elektronik Politeknik Negeri Padang (PNP)
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Pelatihan Pembuatan Smart Parking Berbasis IoT di SMKN 8 Padang
Get PDFSMKN 8 Padang merupakan sekolah kejuruan yang salah satu teknik kejuruannya fokus dalam Teknik Jaringan Komputer dan Telekomunikasi (TJKJ) menghasilkan lulusan-lulusan yang sesuai dengan kebutuhan industri. Permasalahan utama yang dihadapi mitra adalah tingkat pengetahuan dan pemahaman siswa SMKN 8 Padang tentang IoT dan implementasinya yang masih minim, khususnya dalam membangun sistem smart parking berbasis IoT. Kondisi ini terjadi akibat pembelajaran tentang IoT masih kurang maksimal karena tidak diberikan dalam sebuah mata pelajaran khusus dan belum terdapatnya modul pembelajaran mengenai IoT untuk di implementasikan secara langsung. Berdasarkan hal ini Tim Pelaksana PkM berinisiatif melaksanakan pelatihan mengenai smart parking berbasis IoT menggunakan software Arduino UNO dengan prototype. Tujuan kegiatan ini adalah melakukan simulasi media pembelajaran IoT untuk sistem smart parking bagi siswa sekolah mitra. Hasil dari Kegiatan PkM yang telah dilakukan berupa penyampaian materi, pengenalan dan perakitan software dan prototype sesuai dengan modul, mengeksekusi listing program arduino ke prototype yang telah dirakit dan penyerahan produk kepada pihak sekolah. Secara keseluruhan, jika dilihat dari kategori ketercapaian tujuan kegiatan, ketercapaian target materi, dan kemampuan peserta dalam penguasaan materi, maka kegiatan PkM ini dapat dinilai baik. Hal ini terwujud berkat dukungan dari berbagai pihak, terutama para peserta pelatihan, guru-guru dan kepala sekolah SMKN 8 Padang
Analisis Sifat Mekanik Pada Material Standar Paduan COR ALSi10Mg(b) Dari Skrap Aluminium
Get PDFThe metal industry in Tegal Regency is classified into ferrous and non-ferrous metal industries. The shipping component industry is the leading producer of the non-ferrous metal industry. The problem faced by the non-ferrous metal processing industry, especially the Small and Medium Industry ship components is the availability of standard materials as raw materials at affordable prices. Instead, SMEs use scrap material to reduce selling prices, as a result of which product quality does not meet the required specifications. This research made 2 (two) formulas of AlSi10Mg(b) from an aluminum scrap mixture where AlSi10Mg(b) is one of the standard materials of cast aluminum alloy recognized by Biro Klasifikasi Indonesia (BKI). The study aimed to recommend raw material formulas to SMEs to ship components to make products according to BKI standards. The research began by collecting a database of aluminum scrap composition, then simulating calculations with an Excel program to obtain theoretical chemical composition so that the need for aluminum scrap was produced. The two standard material formulas of AlSi10Mg(b) are made from different main scrap where formula 1 is the piston, and formula 2 is the brake lining with the supporting scrap is the pan, aluminum elbow, and aluminum plate as well as the AlSi49 and AlMg20 master alloys. The simulation results are then cast with the sand-casting method. The cast results are made of specimens testing chemical composition and hardness. The results of the chemical composition test show that both formulas are in accordance with the conditions of AlSi10Mg(b) cast alloy, namely the percentage of Silicon (Si) and Magnesium (Mg) in formula 1 is 9.16% and 0.39% while formula 2 is 10.69% and 0.22%. Both formulas are still with Copper (Cu) content that still exceeds the limit of above 0.1%. The hardness value has met BKI standards above 50HBN
Metode Peningkatan Ketahanan Retak Resin Polyester Terhadap Penambahan Serat Sekam Padi
Get PDFPolymer materials have been widely developed as alternative materials to replace metal materials due to various advantages such as having low density and an easy manufacturing process. Still, polymers have many disadvantages, including not having high mechanical strength, easy to crack when hit by impact. One of the materials studied is an unsaturated polyester polymer widely used for composite matrices in vehicle structural components, aircraft and ship bodies, and vehicle components. One of the studied fibers is rice husk particle fiber. The study of cracks is essential because it causes the material to no longer be able to support the load according to the previous plan and causes failure to occur more quickly. One way to overcome material failure due to cracks in the composite material is to prevent crack propagation by adding reinforcing material. In this study, a composite material was made using rice husk fiber to increase the crack resistance of the polyester composite matrix. From the results of crack testing, there is a tendency to increase the percentage of rice husks by 5%, 10%, 15%, and 20%. The value expected to be obtained for determining the crack resistance of the material is the value of the stress intensity factor (K1). The most significant K1 value was obtained at a 15% rice husk percentage variable of 1,558 MPa.m0.5. This price could increase the value of the pure polyester stress intensity factor K1 by 0.667 MPa.m0.5, indicating an increase of 233.58%
Analisis Komparatif Daya Dukung Tanah & Penurunan Pondasi Menggunakan Metode Analitis Dan Metode Elemen Hingga (Studi Kasus : Borehole 1 Proyek Apartment Mega Techno City Di Kota Batam)
Get PDFBatam City is a city with high attractiveness for tourists, both local and foreign tourists. In an effort to support and accommodate tourists visiting the city of Batam, the construction of hotels and apartments has been intensively carried out. Due to limited land, the high rise building model is one of the most effective building models to build. To guarantee high rise building performance, it is necessary to plan well in design from a structural point of view. In this case foundation as one of the elements of the structure is also an important part, so it needs to be planned well too. The bearingXcapacity of theXfoundation and the settlement in the foundation areXtwo important things that need to beXconsidered in foundation planning. In this study, an analysis of the bearing capacity of the foundation using the Meyerhof method and the finite elementXmethod (Plaxis 2D) and foundation settlement analysis using the elastic reduction method and the finite elementXmethod (Plaxis 2D) was carried out on the Mega Techno City Apartment construction project in Batam. The results of this analysis are in the form of bearing capacity based on the Meyerhof method is 3.330,8 kN and 3.351,6 kN based on the finite element method, as for the settlement, 53,1 mm is obtained for the elastic settlement method and 9,64 mm for the finite element method, the settlement still meets the SNI 8640 – 2017 standard. Based on these external differences, it can be used as a reference in conservative design
Analisis Banjir Metode Hidrograf Satuan Sintetis SCS dan Nakayasu DAS Pesung, Batam
No full textDesign discharge is discharge with a certain return period which is used as a reference or parameter in a water building construction planning. Calculation of the design discharge can be done by using the synthetic unit hydrograph method. The calculation of the planned discharge using the Nakayasu and SCS-CN synthetic unit hydrographs aims to compare the calculation of the maximum discharge in the Pesung Watershed, Batam. The design discharge analysis was carried out without calibrating with AWLR data (observed flow) due to the unavailability of AWLR data at the study site. Thus, in this study using HDRO (high direct runoff) as a comparison. The purpose of this study is to estimate the magnitude of the design flood discharge in the Pesung Watershed, Batam City. The methods used in this calculation of the flood hydrograph is using an empirical formula, namely SCS Synthetic Unit Hydrograph and Nakayasu. The results of the HDRO calculation analysis show that the largest flood discharge occurs in the Nakayasu synthetic unit hydrograph method with details of the SCS synthetic unit hydrograph method, the peak time (Tp) is obtained at 4.46 hours, with a return period flood discharge of 5 – 50 reaching 215,488 – 584,308 m3/ s. Whereas in the Nakayasu synthetic unit hydrograph method, the peak time (Tp) is obtained at 1.47 hours, with a return period flood discharge of 5 – 50 years reaching 360.526 – 986.535 m³/s
Rancang Bangun Konstruksi Mesin Pencacah Plastik Multifungsi Kapasitas 50 Kg/Jam
Get PDFThe use of plastic in human life is increasing. In an effort to utilize plastic waste as a recycled material, it is necessary to create a tool or machine that can be operated as a tool for chopping plastic. The main components of a plastic chopping machine are the electric motor, pulleys and belts, blades and shafts, pins, bearings, hoppers and frames. The working principle of the plastic chopping machine is that the electric motor shaft rotates then transmits power to the chopping knife shaft with the help of pulleys and v-belts to chop the plastic that enters from the hopper. The plastic chopping machine uses power from a 1.5 HP electric motor with a motor speed of 1450 rpm and a shaft rotation speed of 580 rpm. The angle iron used for construction planning is SS4400 steel angle iron with a yield strength of 245 N/mm2, a safety factor of 5, and the bending stress is smaller than the allowable stress so that it is safe to use as a frame construction for plastic chopping machines
Perancangan Mesin Press Kaleng Minuman Menggunakan Tenaga Motor Listrik
Get PDFAluminum can waste is becoming more prevalent. There is no trash processing system, and the public does not value recycling. Used-goods collectors may damage themselves by crushing cans with a hammer to reduce volume. To improve the recycling process of aluminum beverage cans, an electric-powered press machine will be designed. The design of this press machine is intended to assist users in the waste treatment process in minimizing space, especially in the trash can storage space, and to make it easier for collectors of recyclables. This equipment is used to compress objects with a driving force. The press machine developed can reduce the volume or dimensions to increase the capacity of transmitting cans, which will subsequently be melted again. Previous research has been based on pneumatic motors and manufacturing techniques that demand a large amount of space and are therefore impractical. Meanwhile, despite having the same power of 1/2 HP, the smaller rotation speed of 272.5 RPM results in a reduced pressing force of 59.17 kgf. The motor was designed to have a power output of 1/2 horsepower and a rotational speed of 1400 revolutions per minute. The transmission system uses a 76.2-millimeter diameter pulley along with a belt that has a type 50 speed reducer ratio of 1:60. A cam, coupled with the speed reducer, moves the pressing cylinder translationally. This enables the pressing cylinder to press up to 1,380 cans per hour. The force required to press the can is 951.57 N
Analisa Tegangan pada Desain Empat Mata Potong untuk Mesin Pencacah Plastik Menggunakan Metode Elemen Hingga
Get PDFExcessive use of plastic materials eventually causes problems related to the accumulation of plastic waste. One way to deal with plastic waste is to crush it into smaller pieces using a plastic chopper machine. The purpose of this research is to redesign the cutting blade of the crushing machine by varying the thickness of the cutting blade, the number of cutting blades of the crushing machine, and varying the cutting tooth material to get maximum stress and displacement [1-3]. From previous research it was shown that stress and deformation occurred at the number of 2 and three cutting chisel blades [1-2] and the tilt position of 4 cutting chisel blades [3]. In this research uses simulation the finite element method by a solid work design application. The thicknesses variations are 5 mm, 7 mm, and 10 mm and the number of cutting blades amounting four. The number of cutting blades used is four because of the simple design and able to carry out more cutting processes. The materials used are AISI 1045, HSS 18%, and JIS SKD 11. From the results is the recommended material thickness is 10 mm because it is able to accept less stress than 5 mm and 7 mm. The results in terms of the mechanical strength of the simulation state that all are safe to use. If it is based on mechanical strength, the recommended material is AISI 1045 coMPared to 18% HSS STEEL and JIS SKD 11. However, from economic factors, 18% HSS is a recommendation to be chosen as a cutting tooth material
Modeling Mechanical Component Classification Using Support Vector Machine with A Radial Basis Function Kernel
Get PDFThe process of identification and classification of products in the era of modern manufacturing industries has become a crucial pillar in enhancing efficiency, productivity, and product quality. In this research, the modeling of manufacturing product classification, such as mechanical components consisting of four classes: bolts, washer, nuts, and locating pin, was conducted. The proposed model in this study is the Support Vector Machine (SVM) with Radial Basis Function (RBF). The dataset used consists of digital images of mechanical components, with each component having 400 samples, resulting in a total of 1600 samples. The dataset is divided into training and testing data, with 300 samples for each component in the training set, and 100 samples removed from the training set for external testing as model validation. The best model parameters were determined using grid search by varying the parameter values of C and γ (gamma). The model was evaluated using K=3 fold cross-validation, and external testing utilized a confusion matrix to calculate Accuracy, Precision, Recall, and F1-Score values. The research results indicate that the SVM model with the RBF kernel, using the combination of C=10 and γ=scale, achieves the best performance in classifying the four mechanical components. This is evident from the training results of the model, which were able to obtain evaluation metrics such as Accuracy of 94.17%, Precision of 0.94, Recall of 0.94, and F1-Score of 0.94. Meanwhile, the validation results with new data not present in the training dataset show that the model can achieve evaluation metrics with an Accuracy of 93%, Precision of 0.93, Recall of 0.93, and F1-Score of 0.93. These results are consistent with the training performance, indicating that the SVM model with the RBF kernel excels in classifying digital images of mechanical components, such as bolts, nuts, washer, and locating pin
Studi Perbandingan Kuat Tekan Paving Block Berbahan Dasar Limbah Plastik
No full textThe waste problem in Indonesia is an unfinished problem. The growing population increases the amount of waste originating from human activities, both organic and inorganic waste. Inorganic waste such as plastic waste is difficult to decompose naturally, so research is needed on the use of plastic waste to make environmentally friendly paving blocks. The aim of this research is to know the compressive strength and the percentage of water absorption value. Using experimental data collection techniques or methods (testing/observation). By testing intact paving blocks and cubes, the results showed that PET plastic types did not meet the testing standards for DHPE and PP plastic types, which had varying compressive strength and water absorption, so that research could be continued. The highest compressive strength of the PP plastic type was 16.98 Mpa for the intact model and 23.30 Mpa for the cube model, the lowest water absorption capacity was obtained for the PP plastic type of 0.38%.