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EFFECT OF WELDING CURRENT (SMAW) ON TENSILE STRENGTH AND MICROSTRUCTURE OF S45C STEEL Muhaemin Al Fikri; Iwan Nugraha Gusniar; Viktor Naubnome
TRAKSI Vol 22, No 1 (2022): TRAKSI
Publisher : Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/traksi.22.1.2022.109-121

Abstract

Welding is a metal joining technique by partially melting the parent metal and filler metal with or without additional metal and producing a continuous connection. One type of welding that is often used is SMAW (Shieled Metal Arc Welding) welding. In SMAW welding, the influence of the current used plays an important role in welding. Because it affects the results of the strength of the welded joint. This research was conducted to determine the mechanical properties of tensile testing and microstructure under the influence of different currents. In this research, the test material is S45C steel and the current variation is 90 A, 110 A, and 120 A and the type of electrode used is E7016 LB57. The results obtained from the tensile test have the optimum value at 120 A with a tensile strength of 49.43 kg/mm while 110 A with a tensile strength of 43 kg/mm and 90 A with a tensile strength of 11.04 kg/mm. for testing the microstructure seen in the welded parts and the heat affected area. Keywords: variations in welding current, welding smaw, S45C, tensile strength.
Analisis Tingkat Keamanan pada Mesin Penghancur dan Penepung Sekam Padi Berskala Rumah Tangga Muhammad Raufan Mudhaffar; Iwan Nugraha Gusniar; Arifin Arifin
Jurnal Mettek: Jurnal Ilmiah Nasional dalam Bidang Ilmu Teknik Mesin Vol 8 No 1 (2022)
Publisher : Program Studi Magister Teknik Mesin Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/METTEK.2022.v08.i01.p06

Abstract

Beras merupakan salah satu sumber makanan pokok bagi sebagian besar penduduk dunia, khususnya pada kawasan asia, produksi pada beras di dunia tahun 2010 sampai dengan 2011 mencapai 451 juta ton, sedangkan untuk konsumsi beras dunia sebesar 430 juta ton, dengan total stok beras di pasar dunia mencapai 95 juta ton. Tujuan dari penelitian ini adalah menganalisis komponen poros penghancur yang ada pada mesin yang akan dianalisis untuk mengetahui seberapa aman komponen poros untuk mesin penghancur yang digunakan dalam perancangan mesin penghancur padi dan penepung sekam padi berskala rumah tangga dengan material baja AISI 1020. Metode analisa yang akan digunakan dalam penelitian ini merupakan metode elemen hingga agar dapat diketahui nilai tegangan, displacement dan factor keamaan. Hasil dari simulasi tersebut didapat nilai tegangan pada kondisi satu, dua, dan tiga sebesar 6,123×105 N/m2, 7,668×105 N/m2, 9,218×105 N/m2. Displacement yang terjadi pada kondisi satu, dua, dan tiga adalah 2,630×10-4 mm, 2,673×10-4 mm, 2,736×10-4. Dimana dari hasil simulasi tersebut memiliki nilai lebih kecil dari tegangan izin material sebesar 294,8×106 N/m2, sehingga komponen tersebut dinyatakan aman. Rice is one of the staple food sources for most of the world's population, especially in the Asian region, world rice production from 2010 to 2011 reached 451 million tons, while world rice consumption was 430 million tons, with a total stock of rice in the world market reaching 95 million tons. The purpose of this study is to analyze the components of the crusher shaft on the machine to be analyzed to find out how safe the shaft component for the crusher is used in the design of household-scale rice crushing and rice husk flouring machines with AISI 1020 steel materials. The analytical method to be used in this study is a finite element method in order to know the value of stress, displacement, and safety factor. The results of the simulation show that the stress values ??in conditions one, two, and three are 6.123×105 N/m2, 7.668×105 N/m2, 9.218×105 N/m2. The displacements that occur in conditions one, two, and three are 2,630×10-4 mm, 2,673×10-4 mm, 2,736×10-4. Wherefrom the simulation results it has a value smaller than the material permit stress of 294.8×106 N/m2 so that the component is declared safe.
Analisis Tegangan Von Mises pada Poros Mesin Penggiling Sekam Padi Menggunakan Software Ansys Muhammad Farhan Walidina; Kardiman Kardiman; Iwan Nugraha Gusniar
Jurnal Mettek: Jurnal Ilmiah Nasional dalam Bidang Ilmu Teknik Mesin Vol 8 No 1 (2022)
Publisher : Program Studi Magister Teknik Mesin Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/METTEK.2022.v08.i01.p05

Abstract

Poros adalah suatu bagian stasioner yang berputar, biasanya berpenampang bulat dimana berpasang elemen-elemen seperti puli, flywheel, engkol, dan elemen pemindah lainnya.. Poros bisa menerima beban-beban tarikan, tekan, lenturan atau puntiran yang bekerja sendiri-sendiri atau bergabungan satu dengan yang lainnya. Bila beban tersebut bergabung kita dapat mencari kekuatan statis dan dinamik. Salah satu mesin yang menggunakan poros dan sabuk puli sebagai transmisi yaitu mesin penggiling sekam padi menjadi bahan pakan ternak. Rancang bangun mesin penggiling sekam padi menjadi pakan ternak (dedak) perlu memperhatikan kinerja poros sebagai salah satu komponen utama dari proses penggilingan. Tujuan penelitian ini yaitu menganalisis von mises stress, tegangan geser maksimum, dan safety factor dari desain poros mesin yang telah dibuat portabel dengan sistem simulasi menggunakan software ansys R3 2019. Permodelan tiga dimensi dan analisis poros menggunakan perangkat lunak (Ansys) dengan metode elemen hingga (finite element method). Dari hasil analisis, didapatkan nilai von mises stress pada poros minimum sebesar dan maksimal sebesar , tegangan maksimum dengan nilai minimum sebesar dan nilai maksimum sebesar , serta nilai safety factor minimum 0.093825 dan maksimum 0.056296. Berdasarkan hasil penelitian desain poros penggiling sekam padi yang telah dibuat dikategorikan aman secara teknis. The shaft is a stationary rotating part, usually round in cross section which is attached to elements such as pulleys, flywheels, crank, and other shifting element. Shaft can accept tensile, compressive, bending or twisting loads acting alone or in combination with one another. When these loads are combined we can find static and dynamic forces. One of the machines that uses a shaft and belt pulley as a transmission is a machine that drinds rice husk into animal feed ingredients. The design of the rice husk grinding machine into animal feed (bran) needs to pay attention to the shaft performance as one of the main components of the milling process. The purpose of this research is to portable analyze the von mises stress, maximum shear stress, and safety factor of the machine design that has been made with a simulation system using the ansys R3 2019 software. Three-dimensional modeling and shaft analysis using software (Ansys) with the finite element method. From the results of the analysis, the von mises stress value on the minimum shaft is 10000 and the maximum is 6666, the maximum stress with a minimum value of 7777 and a maximum value of 8888, and a minimym safety factor value of 0,093825 and a maximum of 0,056296. Result based on the research on the design of the rice husk grinding shaft that has been made technically bonded.
ANALISIS TOTAL PRODUCTIVE MAINTENANCE DENGAN METODE OEE DAN FMEA PADA MESIN EXTRUDER GW-350 Dodi Siagian; Iwan Nugraha Gusniar; Iman Dirja
Steam Engineering Vol. 4 No. 1 (2022): STEAM Engineering, Vol. 4, No. 1, September 2022
Publisher : Program Studi Pendidikan Teknik Mesin, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (680.627 KB) | DOI: 10.37304/jptm.v4i1.5343

Abstract

An industrial company that specializes in plastics, with the basic ingredients of PolyEthylene Terephthalate, PolyPropylene, and Hight Impact Polystyrene, the product is a plastic plate that is produced through the operation of the Extruder machine. Total Productive Maintenance (TPM) is one method of analyzing a machine and will help research the effectiveness of a machine with the help of other methods such as Overall Equipment Effectiveness (OEE) and Failure Mode and Effect Analysis (FMEA). Based on the quantitative analysis of the OEE calculation, the OEE value of the Extruder 1 GW-350 machine is obtained with an average calculation of 79.35%. Based on qualitative analysis using FMEA, the RPN failure mode score on the Extruder 1 GW-350 engine was obtained. The highest RPN value is the printer is unstable (die) at 240.
Pengendalian Kualitas Menggunakan Seven Tools dan Kaizen pada Part PLG di PT Naratama Sayagai Indonesia Iwan Nugraha Gusniar; Dhia Nafis Ramadhan
Jurnal Serambi Engineering Vol 7, No 4 (2022): Oktober 2022
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v7i4.4647

Abstract

Abstract The rapid development of the industry requires companies to be able to compete in the global era. One way to compete is with quality control. PT. Naratama Sayagi Indonesia (NSI), is a company engaged in milling and lathe fabrication. In the production process, PT. NSI still often experiences product defects that make production inefficient. This study aims to identify the level of defects that occur in the production of PLG parts which are products of  PT. NSI. This research is descriptive quantitative with the method used is Seven Tools to measure the level of defects and Kaizen Five-M Checklist to provide suggestions for improvements to the company. The data in this study were obtained by using interviews and direct observation. The results obtained are known to have three types of PLG Part defects, namely Deep dropping, Trid Double Threads, and Broken Drills. Based on the Pareto diagram, it is known that the dominant defect that occurs is Deep dropping with 68%. Based on the fishbone diagram, it can be seen that the occurrence of defects is caused by several factors, namely from humans, machines, raw materials, methods, tools, and the environment. The problem solving proposals obtained in Kaizen Analysis are by adjusting SOPs, evaluating work systems, and adding some equipment.Keywords: PT. NSI, Defect Product, Quality, Kaizen, Seven Tools. AbstrakPerkembangan industri yang semakin pesat menuntut perusahaan harus bisa bersaing di era global. Salah satu cara bersaing adalah dengan pengendalian kualitas. PT. Naratama Sayagi Indonesia (NSI), adalah perusahaan yang bergerak dibidang fabrikasi milling dan bubut. Dalam proses produksinya, PT. NSI masih sering mengalami kecacatan produk yang membuat produksi belum efisien. Penelitian ini ditujukan untuk mengidentifikasikan tingkatan cacat yang terjadi pada produksi part PLG yang merupakan produk PT. NSI. Penelitian ini berupa deskriptif kuantitatif dengan metode yang digunakan adalah Seven Tools untuk mengukur tingkat cacat serta Kaizen Five-M Checklist untuk memberikan usulan perbaikan pada perusahaan. Data pada penelitian ini didapatkan dengan menggunakan cara Wawancara dan Observasi secara langsung. Hasil yang didapatkan diketahui terdapat tiga jenis cacat Part PLG yaitu Deep dropping, Ulir Trid Double, dan Drill Patah. Berdasarkan diagram pareto diketahui cacat dominan yang terjadi adalah Deep dropping dengan 68%. Berdasarkan diagram fishbone dapat diketahui terjadinya cacat disebabkan beberapa faktor yaitu dari manusia, mesin, bahan baku, metode, alat, dan lingkungan. Usulan pemecahan masalah yang didapatkan pada Analisis Kaizen adalah dengan penyesuaian SOP, evaluasi sistem kerja, dan penambahan beberapa peralatan.Kata Kunci: PT. NSI, Produk Cacat, Kualitas, Kaizen, Seven Tools
Analisis Kekuatan Material Pada Poros Mesin Spinner Peniris Minyak Hasil Produk Makanan Naufal Azhar Al'Afif; Iwan Nugraha Gusniar; Aa Santoso
Patria Artha Technological Journal Vol 6, No 2 (2022): Patria Artha Technological Journal
Publisher : Department of Electrical Engineering, University of Patria Artha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33857/patj.v6i2.539

Abstract

A spinner machine is an oil draining machine that works based on centrifugal force, this tool is equipped with appropriate technology that can reduce the oil content contained in food. The machine can drain cooking oil on food products more easily, quickly, and practically, where the ingredients or food products produced are cleaner and drier than oil or water. The working principle of an oil draining machine is almost the same as the working principle of a washing machine when in the drying process so that the shaft becomes an important element in resisting the rotation that occurs in this draining machine. The purpose of this study is to determine the distribution of the load on the shaft and find the best safety value of the material to be used. The specifications of the shaft used in the form of a pipe have a length of 630 mm, and a diameter of 15 mm, and the planned materials are st37 and ASTM a36 steel. With the results of the analysis value using the 2019 Solidworks software on testing the oil draining spinner machine shaft, the value on the ASTM A36 material with a load of 3 kg obtained a safety value of 3.3. At a load of 10 kg, the safety value is 1.0. And at a maximum load of 20 kg, a safety value of 0.5 is obtained. So that the strongest material that can withstand a load of up to 20 kg is st37 / AISI 1045 steel with a safety value at a load of 3 kg the safety value is 7.9. At a load of 10 kg, the safety value is 2.2. And at a maximum load of 20 kg, the safety value is 1.1.  Keywords:  axle, spinner machine, design, analysis.
Usulan Penerapan Metode Lean Six Sigma untuk Menurunkan Angka Produk Cacat pada Produksi Camshaft di PT. Morita Tjokro Gearindo Hendi Ramadhani; Iwan Nugraha Gusniar
Jurnal Serambi Engineering Vol 8, No 1 (2023): Januari 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i1.5316

Abstract

Abstract In an increasingly developing industrial era, companies must have consistency in their business activities, including fulfilling customer satisfaction. One of the factors that can provide satisfaction to customers is the suitability between expectations and the product provided, including the quality of the product. In order for product quality to be consistent, quality control must be carried out by the company. This study aims to identify defects that occur and provide recommendations for improvements to the production of camshafts at PT. Morita Tjokro Gearindo. Lean six sigma DMAIC concept is the method used in this study with five stages of systematic control. The data used in this research is the amount of production and the number of defective products in the period January-June 2022. These data are obtained from company reports and other data such as work systems, field conditions obtained through direct observation and interviews. From the analysis that has been done, it is known that there are still many defects above the company's tolerance limit of 0.5%. There are three types of defects that occur in camshaft production, namely burry, lip, and no chamfer journal. The results of calculating the company's sigma value obtained a value of 4.22, which means it is already above the Indonesian industry average. Based on the results of the Pareto diagram, the highest type of defect is burry with 75% caused by material, method and environmental factors. Proposed improvements based on the 5W + 1H analysis, namely having a manual book placed on the machine, making checksheets to ensure repeated checks, and having SOPs related to briefings before work and breaks to restore operator focus.Keywords: Distro, Apparel, Marketing, SWOT, QSPM Abstrak Pada masa industri yang semakin berkembang, perusahaan harus memiliki konsistensi dalam aktivitas bisnisnya, termasuk pada pemenuhan kepuasan pelanggan. Salah satu faktor yang dapat memberikan kepuasan pada pelanggan adalah kesesuaian antara harapan dan produk yang diberikan termasuk kualitas produknya. Agar kualitas produk dapat konsisten diperlukan pengendalian kualitas yang harus dilakukan oleh perusahaan. Penelitian ini ditujukan untuk mengidentifikasi cacat yang terjadi dan memberikan usulan perbaikan pada produksi camshaft di PT. Morita Tjokro Gearindo. Lean six sigma konsep DMAIC menjadi metode yang digunakan pada penelitian ini dengan lima tahap pengendalian yang sistematis. Data yang digunakan pada penlitian ini berupa jumlah produksi dan jumlah produk cacat pada periode Januari-Juni 2022. Data-data tersebut didapatkan dari laporan perusahaan serta data lain seperti sistem kerja, kondisi lapangan yang didapat melalui observasi dan wawancara secara langsung. Dari analisis yang telah dilakukan diketahui masih banyak terjadi cacat di atas batas toleransi perusahaan yaitu 0,5%. Terdapat tiga jenis cacat yang terjadi pada produksi camshaft yaitu burry, bibiri, dan no chamfer journal. Hasil perhitungan nilai sigma perusahaan didapatkan nilai 4,22 yang berarti sudah berada diatas rata-rata industri Indonesia. Berdasarkan hasil diagram pareto jenis cacat tertinggi yaitu burry dengan 60% yang disebabkan dari faktor material, metode, dan lingkungan. Usulan perbaikan berdasarkan analisis 5W+1H yaitu adanya manual book yang ditempatkan di mesin, pembuatan checksheet untuk memastikan pengecekan berulang, dan adanya SOP terkait pengarahan sebelum pekerjaan dan adanya break untuk mengembalikan fokus operator. Kata Kunci: Industri, Kualitas, Produk Cacat, Six Sigma, DMAIC
Coolant circulation improvement on the chip tub of the machine lnc okuma 0002 pt. komatsu undercarriage indonesia Muhammad Aditya Artha Prastama; Iwan Nugraha Gusniar
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol 16, No 2 (2022): SINTEK JURNAL
Publisher : University of Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.16.2.143-148

Abstract

In general, coolant is a cooling medium used to cool workpieces and cutting tools during the machining process. In PT Komatsu Undercariage Indonesia, the LNC OKUMA 0002 chip crankcase contained a lot of stagnant coolants. The factor that causes the coolant to stagnate is that the growl is wasted through the chip conveyor and the coolant is carried along with the growl to the chip. Changing the coolant fluid needs to be done in a certain phase because the use of the coolant for too long causes sand to accumulate. Excessive sand can close the cooling duct system. The quality of the coolant can deteriorate due to heat and a dirty environment. In addition, corrosion on the radiator can also result in the deposition of dirt on the coolant. When this happens, the engine overheats easily and triggers a stall. The repairs that have been carried out are examining and repairing the components of the coolant system by adding a coolant channel and a pump that functions to suck the coolant so that the coolant returns to the LNC OKUMA 0002 engine.
Analisis Pengendalian Kualitas Menggunakan Metode Quality Control Circle pada Part JK6000 di PT. XYZ Gianty Mita Rengganis Sulaeman; Iwan Nugraha Gusniar
Jurnal Serambi Engineering Vol 8, No 2 (2023): April 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i2.5665

Abstract

Abstract The condition of the manufacturing industry that continues to grow makes every company compete for customer loyalty. One that the company should focus on is the quality of the products it produces because quality is an important factor in gaining customer loyalty. This research is aimed at controlling and reducing the defect rate of no cutting part JK6000 at PT. XYZ. The amount of production and the number of defective products are the data used in the research, namely in the period January-October 2022. The data analysis used is the Quaility Control Circle (QCC) method through eight improvement steps. From the results obtained in the fishbone diagram, it is known that the main factor causing the defect is the engine which has uneven air circulation problems. improvements made by adding air tubes to distribute air more thoroughly to all parts of the engine. In the November-December period after the repairs were carried out, it was noted that there was a decrease in the defect rate to 0.03% from the previous condition which was above 0.10%. Follow-up proposals include making SOPs, counseling employees, and forming a QCC team for continuous quality control.Keywords: Manufacture, Quality, Product, Defect, QCC AbstrakKondisi industri manufaktur yang terus berkembang membuat setiap perusahaan bersaing untuk mendapatkan loyalitas pelanggan. Salah satu yang harue menjadi fokus perusahaan adalah kualitas dari produk yang dihasilkan karena kualitas menjadi faktor penting untuk mendapatkan loyalitas pelanggan. Penelitian ini ditujukan untuk mengendalikan dan menurunkan tingkat cacat no cutting part JK6000 di PT. XYZ. Jummlah produksi serta banyaknya produk cacat menjadi data yang digunakan dalam penelitian yaitu pada rentang waktu Januari-Oktober 2022. Analisis data yang digunakan adalah dengan metode Quaility Control Circle (QCC) melalui delapan langkah perbaikan. Hasil yang didapatkan pada diagram fishbone diketahui faktor utama penyebab cacat adalah pada mesin yang memiliki masalah sirkulasi udara yang kurang merata. perbaikan yang dilakukan dengan menambah tabung udara untuk mendistribusikan udara agar lebih menyeluruh ke semua bagian mesin. Pada periode November-Desember setelah dilakukan perbaikan, diketahui terjadi penurunan tingkat cacat menjadi 0,03% dari kondisi sebelumnya berada diatas 0,10%. Usulan tindak lanjut yaitu pembuatan SOP, penyuluhan karyawan, dan pembuatan tim QCC untuk pengendalian kualitas secara berkelanjutan.Kata Kunci: Manufaktur, Kualitas, Produk, Cacat, QCC
Analisis Perawatan Mesin Injection Molding FCS-HN 200SV dengan Metode TPM di PT. XYZ Iwan Nugraha Gusniar; Agung Izzulhaq Choerullah
JITMI (Jurnal Ilmiah Teknik dan Manajemen Industri) Vol 4, No 2 (2021): JITMI
Publisher : Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/jitmi.v4i2.y2021.p%p

Abstract

Dalam dunia industri, peranan mesin sangat vital untuk seluruh proses produksi. Di setiap perusahaan yang menggunakan teknologi pasti akan memerlukan sistem perawatan serta merawat alat dan mesin yang dimiliki agar keadaan mesin selalu optimal, terutama mesin injection molding FCS-HN 200SV karena pada mesin ini terjadi proses injection yang merubah bahan berupa biji plastik menjadi produk berupa grip untuk rem tangan pada mobil. Jika waktu downtime mesin tinggi, maka akan sangat berpengaruh terhadap proses produksi yang akan dicapai. Untuk mengetahui efisiensi dari mesin injection molding FCS-HN 200SV ini perlu adanya aspek availability, performance rate, dan quality rate. Perawatan mesin mengalami perkembangan seiring dengan perkembangan ilmu dan teknologi, maka dari itu penerapan Total Productive maintenance (TPM) menjadi solusi untuk membantu mempertahankan produktivitas mesin dalam kondisi yang baik. Tujuan dari TPM adalah meminimalisasi kerugian cost produksi dengan melakukan perhitungan Overall Equipment Effectiveness (OEE). Perhitungan OEE ini meliputi aspek Availability, Performance rate, dan quality rate. Data yang digunakan pada perawatan mesin injection molding FCS-HN 200SV di PT XYZ merupakan kegiatan produksi selama satu bulan, setelah dihitung nilai availability 88,32 % , nilai performance rate 99,36 % keduanya berada diatas nilai standar dunia OEE, nilai quality rate 92,687%. Lalu didapatkan hasil OEE 81,33 % dan tidak termasuk pada standar OEE dunia.