Turbo Jurnal Program Studi Teknik Mesin最新文献

{"title":"Kondisi Pemotongan Optimum Proses Bubut Konvensional Berbantuan Komputer","authors":"Hasan Hariri","doi":"10.35814/teknobiz.v12i2.3676","DOIUrl":"https://doi.org/10.35814/teknobiz.v12i2.3676","url":null,"abstract":"Dalam proses pemesinan, faktor ekonomis memainkan peranan penting dalam menentukan laju produksi. Jika kita memotong material pada kecepatan potong dibawah batas ketentuan, maka waktu penyelesaian operasi tersebut akan naik. Jika operasi yang sama dilakukan dengan kecepatan yang sangat tinggi, maka keausan pahat akan bertambah cepat. Operator akan lebih sering mengganti pahat, dan sebagai konsekwensinya umur pahat menjadi lebih pendek juga mesin menjadi lebih sering disetting ulang. Semua itu akan membuat biaya operasi menjadi mahal. Keuntungan maksimum merupakan alasan yang cocok untuk memilih kondisi pemesinan optimum dengan kriteria biaya minimum pada laju produksi maksimum. Kondisi pemotongan optimum menjadikan keuntungan sebagai suatu fungsi tujuan sebagaimana dikemukakan oleh para peneliti. Dari analisa biaya dan produksi untuk beberapa operasi pemesinan bila tiga fungsi tujuan diperhatikan secara terpisah, maka solusi adalah optimum untuk satu tujuan tetapi tidak optimum terhadap dua tujuan lainnya. Dalam tulisan ini dibahas cara penentuan kondisi pemesinan optimum dengan menggunakan dua fungsi tujuan, yakni biaya produski dan laju produksi.","PeriodicalId":31503,"journal":{"name":"Turbo Jurnal Program Studi Teknik Mesin","volume":"108 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74498905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimalisasi Performa Proses Deep Drawing Material SPCD Steel dengan Metode Finite Element dan Eksperimental","authors":"Prawito Herno, Susanto Sudiro","doi":"10.35814/teknobiz.v12i2.3611","DOIUrl":"https://doi.org/10.35814/teknobiz.v12i2.3611","url":null,"abstract":"Deep drawing adalah salah satu proses manufaktur yang sangat penting khususnya pada proses pembentukan dengan bahan dasar metal coil. Proses deep drawing dalam pembuatan cup kebanyakan digunakan pada industri pengalengan, elektronik, mobil, kedirgantaraan. Proses deep drawing mampu menghasilkan produk dengan bentuk sangat komplek dan tingkat kepresisian dengan kapasitas yang tinggi. Parameter proses yang mempengaruhi tingkat kualitas produk antara lain gaya blank holder, bentuk dan ukuran blank, radius punch, radius die, sifat material, koefisien gesekan dan beberapa parameter lainnya. Penguasaan teknologi proses deep drawing adalah merupakan persyaratan utama untuk dapat menghasilkan produk dengan cacat minimum sekaligus mengoptimalisasi untuk menurunkan biaya produksinya. Untuk mendapatkan parameter proses yang paling dominan mempengaruhi keberhasilan proses deep drawing dilakukan analisis proses pembentukan dengan melakukan simulasi menggunakan metode elemen hingga, dan hasil analisis tersebut diverifikasi menggunakan eksperimen proses pembentukan cup menggunakan proses sebenarnya. Dari hasil simulasi finite element dan eksperimen yang dilakukan didapatkan hasil gaya blank holder/blank holder force (BHF), radius punch, radius die dan aplikasi pelumasan sangat berpengaruh terhadap hasil produk.","PeriodicalId":31503,"journal":{"name":"Turbo Jurnal Program Studi Teknik Mesin","volume":"63 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90890634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pembuatan dan pengujian spot welding menggunakan travo daur ulang","authors":"T. Wahyudi, Asroni Asroni, Bahtiar Abdul Rahman","doi":"10.24127/trb.v11i1.2087","DOIUrl":"https://doi.org/10.24127/trb.v11i1.2087","url":null,"abstract":"","PeriodicalId":31503,"journal":{"name":"Turbo Jurnal Program Studi Teknik Mesin","volume":"76 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75602483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pengaruh komposisi etanol sebagai zat aditif pada Sterculia Foetida Methil Ester terhadap pembakaran difusi","authors":"D. Prasetiyo, Djoko Wahyudi","doi":"10.24127/trb.v11i1.1923","DOIUrl":"https://doi.org/10.24127/trb.v11i1.1923","url":null,"abstract":"The amount of fossil energy reserves, especially fuel oil, which is dwindling, is the main focus for finding alternative energy sources. One of the most popular renewable energies today is biodiesel. Biodiesel can be obtained from free fatty acids from plants. One type of plant that can produce biodiesel as a raw material is kepuh (Sterculia foetida). The kepuh plant produces crude oil through fruit seeds which can be processed into biodiesel. However, biodiesel has a high viscosity value that affects the combustion reaction. Therefore we need an additive, namely ethanol to accelerate the combustion reaction. This study aims to determine the effect of the composition of ethanol in biodiesel on the characteristics of diffusion combustion. The research method used is the combustion diffusion test. The variables used in this study were the composition of biodiesel and ethanol. The composition of ethanol is 0%, 5%, 10%, 20%, 30%. The test results produce data that ethanol has an effect on the rate of diffusion of combustion and flame height. The combustion rate increases with the addition of ethanol and the flame height decreases with the addition of ethanol.","PeriodicalId":31503,"journal":{"name":"Turbo Jurnal Program Studi Teknik Mesin","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89735673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analisis kinerja variasi jenis dan ketebalan isolator pada dinding ruang mesin pengering kemiri","authors":"Zaky Abdul Aziz, M. Anggara","doi":"10.24127/trb.v11i1.1921","DOIUrl":"https://doi.org/10.24127/trb.v11i1.1921","url":null,"abstract":"","PeriodicalId":31503,"journal":{"name":"Turbo Jurnal Program Studi Teknik Mesin","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88478121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Simulasi unjuk kerja kolektor surya hybrid PV/T berdasarkan jarak susunan pipa absorber berbentuk spiral","authors":"A. Yonanda, A. Amrizal, Harmen Harmen, H. Prayitno","doi":"10.24127/trb.v11i1.1906","DOIUrl":"https://doi.org/10.24127/trb.v11i1.1906","url":null,"abstract":"The performance of the solar collector can be reviewed based on several parameters, namely thermal and large fluid drop (pressure drop). This study aims to compare the thermal and pressure drop performance of plate-type solar collectors based on a spiral-shaped pipe arrangement using the distance between the pipes. The comparison of performance analyzed in each study for the distance between the pipes is 25 mm and 50 mm. The approach or stage of research on the performance of the data plate type solar collector is through CFD simulation testing. The simulation stages that will be carried out include: making the geometric design of the solar collector and selecting the mesh method used by the polyhedral type. The results of the solar collector test carried out by CFD simulation show that the use of a 50 mm absorber pipe arrangement has a higher thermal efficiency when compared to the 75 mm absorber pipe arrangement and also a 49.45% increase in pressure drop.","PeriodicalId":31503,"journal":{"name":"Turbo Jurnal Program Studi Teknik Mesin","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90471775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analisa pengaruh jarak cutting torch terhadap permukaan berputar pada mesin pemotong kontur sambungan pipa","authors":"A. Akhyan, H. Salam","doi":"10.24127/trb.v11i1.1882","DOIUrl":"https://doi.org/10.24127/trb.v11i1.1882","url":null,"abstract":"Currently steel pipes are needed, especially in construction work. Construction with pipe materials cannot be separated from the process of joining and cutting. The cutting process for large pipes always uses a thermal cutting process. This study aims to determine how much influence the cutting distance has on the cutting results on a pipe that rotates at a constant 0.8 rpm following the shape of the corner joint contour. To achieve the objectives of this study, a pipe cutting tool with a diameter of 4 to 6 inches is needed with the thermal cutting method using the Oxy Acetylene Cutting (OAC) process This research data was obtained by cutting the 4inch pipe schedule 10s, schedule 20s and schedule 40s in a rotating condition and the cutting torch moves back and forth. The pipe rotates at 0.8 rpm using an AC motor transmitted using a gearbox connected to the wheel as a holder where the pipe rotates. The results of the cutting are in the form of a pipe connection contour with an angle of 900 and 600. As the independent variable in this study was set the cutting distance is 5mm, 7mm and 10 mm, while the fixed variables are determined by cutting speed 280 mm/minute, acetylene gas pressure 3.5 kg/cm2 and oxygen 17.5 kg/cm2. In order to get effective results, preheat the surface of the pipe with a gas fuel mixture until it reaches the melting temperature of the pipe as the main ingredient. The cutting results that meet the entire path of the pipe can be cut completely and through and there is very little splash or melt dirt during the cutting process. After cutting, the best results are obtained at a cutting distance of 5 mm both on schedule 10s, schedule 20s and schedule 40s.","PeriodicalId":31503,"journal":{"name":"Turbo Jurnal Program Studi Teknik Mesin","volume":"67 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77130834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pengaruh variasi ukuran serbuk dan persentase perekat terigu terhadap sifat fisik pellet kayu gelam","authors":"Andy Nugraha, Herry Irawansyah, Mohamad Afifudin, Muhammad Muhammad, Rizqi Nor Al’Arisko","doi":"10.24127/trb.v11i1.1825","DOIUrl":"https://doi.org/10.24127/trb.v11i1.1825","url":null,"abstract":"","PeriodicalId":31503,"journal":{"name":"Turbo Jurnal Program Studi Teknik Mesin","volume":"42 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78713921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analisis kekerasan dan keausan bearing pada pesawat Cessna Grand Carravan 208B","authors":"Muhammad Abdul Rafiq Septiyanto, Indreswari Suroso, N. Utami","doi":"10.24127/trb.v11i1.2045","DOIUrl":"https://doi.org/10.24127/trb.v11i1.2045","url":null,"abstract":"Bearing is a surface component that protects two parts that rub against each other. Bearings have several components including inner rings, roll bearings and supports. Bearings will experience weariness when used continuously, so the purpose of this study is to determine the level of hardness and wear of each bearing component of the Cessna Grand Caravan 208B aircraft. Hardness testing is carried out by vickers method and test sampling is carried out at three different points in each specimen. Wear testing uses the Ogoshimethod and test sampling is performed at three different points in each specimen. The results of this study concluded that vickers hardness testing received the highest hardness score on the roll with an average value of 739.7 VHN, the second highest hardness in the inner ring had an average hardness value of 695.1 VHN, and the lowest hardness in the buffer section had an average hardness value of 110.2 VHN. The wear test results get the highest value on the support section which is 0.00273 mm³ / kg.m, the second highest wear on the inner ring is 0.00133 mm³ / kg.m, and the lowest wear value on the roll is 0.00056 mm³ / kg.m.","PeriodicalId":31503,"journal":{"name":"Turbo Jurnal Program Studi Teknik Mesin","volume":"42 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75687882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analisa kerja alat uji prestasi mesin pendingin udara dengan kapasitas daya kompresor 1 PK","authors":"Lukito Dwi Yuono, Eko Budiyanto, A. Ansori","doi":"10.24127/trb.v11i1.2118","DOIUrl":"https://doi.org/10.24127/trb.v11i1.2118","url":null,"abstract":"The purpose of the study was to determine the temperature value at each point of the refrigeration performance tool, heat absorption, refrigerant flow rate, compressor power, and the working speed of the refrigeration performance test tool or (Coefficient Of Performance) COP during the 60 minute test time. The method that will be used in this research is to modify the test equipment and conduct real experiments by analyzing several variables that affect the performance of the air conditioning system. The independent variables in this study were the refrigerant pressure of 60 Psi, 70 Psi, and 80 Psi. The addition of several components of measuring instruments that function to display data will be carried out at each point as needed. Digital reading of data will function to display test result data in the form of numbers for air temperature, temperature, and refrigerant pressure in the air conditioning machine (AC). The study was conducted in a room with a size of 4 x 5 x 2.5 meters, and using LG AC with a compressor power of 1 PK. Based on the test results, changes in temperature that occur at each point of the performance of the air conditioning machine and heat absorption affect the temperature changes of each cooling machine performance, namely the use of 60 Psi of 23.9 C for 70 Psi of 24.8 C and 80 Psi is 22.1 C. Then changes to heat absorption by the condenser and evaporator are at a refrigerant pressure of 60 Psi of 171.6 kJ/s for 70 Psi of 201.1 kJ/s and 80 Psi of 215.3 kJ/s. And the heat absorption that occurs in the evaporator with a pressure of 60 Psi is 143.3 kJ/s for 70 Psi of 161.6 kJ/s and 80 Psi is 172.2 kJ/s. The resulting refrigerant flow rate and compressor power, for the refrigerant flow rate, affect the changes that occur in the use of 60 Psi of 0.003 kg/s, for 70 Psi of 0.004 kg/s, and 80 Psi of 0.005 kg/s. Then for the compressor power at the use of 60 Psi of 0.446 kW, for 70 Psi of 0.521 kW, and 80 Psi of 0.611 kW. The refrigerant flow rate value of the refrigeration machine performance test tool or COP produced at a refrigerant pressure of 60 Psi is 3.26 for 70 Psi, namely 4.45 and 80 Psi is 5.11.","PeriodicalId":31503,"journal":{"name":"Turbo Jurnal Program Studi Teknik Mesin","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84854427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}