Pub Date : 2023-04-30DOI: 10.21063/jtm.2023.v13.i1.13-18
M. Perdana, Meiki Eru Putra, A. Akmal, Hengki Putra, Murfid Al Ikram, Ardhy Meidianda
Brake pads are one of the components of a motor vehicle that functions to slow down or stop the vehicle's motion. In the concept of braking, one inevitable factor is wear and tear. Wear and tear occur when two objects press against each other and create friction. Composite material is an alternative substance that can be used to replace asbestos brake pads. In this research, shell of palm oil, alumina (Al2O3) powder and epoxy was used for material of brake pad. Type of brake pads was made in this study is brake pads used for motorcycle disc brakes. Addition of volume fraction of alumina powder to 6% in composite material. The aims this study was determine the characterization of brake pad based on composite materials with addition of alumina powder in composite material. This study showed that there was increase of physical and mechanical properties with the addition of alumina powder in composites up 6% by volume fraction.
{"title":"Characteristics of Palm Kernel Shell/Alumina/Epoxy Composites as Motorcycle Brake Pad Material","authors":"M. Perdana, Meiki Eru Putra, A. Akmal, Hengki Putra, Murfid Al Ikram, Ardhy Meidianda","doi":"10.21063/jtm.2023.v13.i1.13-18","DOIUrl":"https://doi.org/10.21063/jtm.2023.v13.i1.13-18","url":null,"abstract":"Brake pads are one of the components of a motor vehicle that functions to slow down or stop the vehicle's motion. In the concept of braking, one inevitable factor is wear and tear. Wear and tear occur when two objects press against each other and create friction. Composite material is an alternative substance that can be used to replace asbestos brake pads. In this research, shell of palm oil, alumina (Al2O3) powder and epoxy was used for material of brake pad. Type of brake pads was made in this study is brake pads used for motorcycle disc brakes. Addition of volume fraction of alumina powder to 6% in composite material. The aims this study was determine the characterization of brake pad based on composite materials with addition of alumina powder in composite material. This study showed that there was increase of physical and mechanical properties with the addition of alumina powder in composites up 6% by volume fraction. ","PeriodicalId":31956,"journal":{"name":"Jurnal Teknik Mesin","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78831476","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}
Pub Date : 2023-04-30DOI: 10.21063/jtm.2023.v13.i1.1-5
Anrinal, Muhammad Fadherizal, Asmara Yanto
This work aims to test and analyze the performance of the CNC Laser Engraver Machine on plywood media by using the grbl settings. The engraving process was conducted by using three filling methods in the grbl setting, i.e., reversed diagonal filling, horizontal filling and no filling. In the reversed diagonal filling method is tested a gears image input, in the horizontal filling method is tested a rumah gadang image input and in the no-filling method is tested a piston image input. The machine performance was assessed by comparing the CAD-based images input with the engraved images output that are carved on plywood media by a laser speed setting of 1000 mm/min, a laser power scale of 60% and a distance of laser from the media of 5 cm. From this assessment it can be concluded that the CNC Laser Engraver Machine is capable to create the shape and size of the images output that is the same as the shape and size of the images input. Here, the images size is obtained by a vernier caliper that has an accuracy of 0.05 mm.
{"title":"Performance Testing of The CNC Laser Engraver Machine on Plywood Media","authors":"Anrinal, Muhammad Fadherizal, Asmara Yanto","doi":"10.21063/jtm.2023.v13.i1.1-5","DOIUrl":"https://doi.org/10.21063/jtm.2023.v13.i1.1-5","url":null,"abstract":"This work aims to test and analyze the performance of the CNC Laser Engraver Machine on plywood media by using the grbl settings. The engraving process was conducted by using three filling methods in the grbl setting, i.e., reversed diagonal filling, horizontal filling and no filling. In the reversed diagonal filling method is tested a gears image input, in the horizontal filling method is tested a rumah gadang image input and in the no-filling method is tested a piston image input. The machine performance was assessed by comparing the CAD-based images input with the engraved images output that are carved on plywood media by a laser speed setting of 1000 mm/min, a laser power scale of 60% and a distance of laser from the media of 5 cm. From this assessment it can be concluded that the CNC Laser Engraver Machine is capable to create the shape and size of the images output that is the same as the shape and size of the images input. Here, the images size is obtained by a vernier caliper that has an accuracy of 0.05 mm.","PeriodicalId":31956,"journal":{"name":"Jurnal Teknik Mesin","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91194012","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}
Pub Date : 2023-04-30DOI: 10.21063/jtm.2023.v13.i1.19-26
Rozi Saferi, Sulaeman, Olka Defra Wanda
The development of the technology is getting trigger competition in industri. To compete, companies should can provide products and the quality of services best for consumer. This study aims to find out the causes of bearings that are damaged in the Induced Draft Fan (IDF Bearing) and how to plan strategic maintenance of IDF Bearing. The method used is reliability centered maintenance (RCM). The causes of bearing damage are analyzed using the Failure Mode Effect and Critical Analysis (FMECA) method. The results of this study show that the cause of IDF Bearing damage is clearance with an RPN value of 210, lubrication system with an RPN value of 36, unbalance with an RPN value of 72, and high temperature with an RPN value of 54. Scheduled Restoration Maintenance is applied for IDF Bearing , where task or preventive maintenance in the form of oil change with a time of 5803.2 hours or 241 days.
{"title":"Failure Analysis of Induced Draft Fan Bearing in PT Semen Padang Using The RCM Method","authors":"Rozi Saferi, Sulaeman, Olka Defra Wanda","doi":"10.21063/jtm.2023.v13.i1.19-26","DOIUrl":"https://doi.org/10.21063/jtm.2023.v13.i1.19-26","url":null,"abstract":"The development of the technology is getting trigger competition in industri. To compete, companies should can provide products and the quality of services best for consumer. This study aims to find out the causes of bearings that are damaged in the Induced Draft Fan (IDF Bearing) and how to plan strategic maintenance of IDF Bearing. The method used is reliability centered maintenance (RCM). The causes of bearing damage are analyzed using the Failure Mode Effect and Critical Analysis (FMECA) method. The results of this study show that the cause of IDF Bearing damage is clearance with an RPN value of 210, lubrication system with an RPN value of 36, unbalance with an RPN value of 72, and high temperature with an RPN value of 54. Scheduled Restoration Maintenance is applied for IDF Bearing , where task or preventive maintenance in the form of oil change with a time of 5803.2 hours or 241 days.","PeriodicalId":31956,"journal":{"name":"Jurnal Teknik Mesin","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74295962","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}
Pub Date : 2023-04-30DOI: 10.21063/jtm.2023.v13.i1.27-31
H. Hafni, Novriwan Novriwan
Welding using a wetelectrode and polarity selection is thought to affect the defects that usually arise in the welding results of low carbon steel type ST 37. To find out how much influence the humidity of the electrode and polarity have on defects in low carbon steel welding results, a study was carried out using oil fluids as a moisturizing agent for the electrode. The process of humidifying the electrode is carried out by immersing the electrode until it absorbs the oil fluid before welding it on the base metal. After welding with these electrodes, a metallographic test was carried out to observe the macrostructure and microstructure of the welding results. The conclusion that can be drawn from the test results is that the humidity of the electrode by oil does not affect the defects that arise in low carbon steel welding results as long as it does not damage the flux from the electrode.
{"title":"Effect of Electrode Moisture in DC Current SMAW Process on The Welding Results of Low Carbon Steel","authors":"H. Hafni, Novriwan Novriwan","doi":"10.21063/jtm.2023.v13.i1.27-31","DOIUrl":"https://doi.org/10.21063/jtm.2023.v13.i1.27-31","url":null,"abstract":"Welding using a wetelectrode and polarity selection is thought to affect the defects that usually arise in the welding results of low carbon steel type ST 37. To find out how much influence the humidity of the electrode and polarity have on defects in low carbon steel welding results, a study was carried out using oil fluids as a moisturizing agent for the electrode. The process of humidifying the electrode is carried out by immersing the electrode until it absorbs the oil fluid before welding it on the base metal. After welding with these electrodes, a metallographic test was carried out to observe the macrostructure and microstructure of the welding results. The conclusion that can be drawn from the test results is that the humidity of the electrode by oil does not affect the defects that arise in low carbon steel welding results as long as it does not damage the flux from the electrode.","PeriodicalId":31956,"journal":{"name":"Jurnal Teknik Mesin","volume":"57 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89164566","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}
Dimas Aldyansyah, Firman Sri Bagaskara, Muhammad Rama Aditya, Dimas Maulana Aji, Felderico Andreas Sitanggang, M. Khairi, Fajar Paundra
Wheel Loader adalah peralatan yang digunakan untuk memindahkan material dan memuatnya ke dalam dump truck. Tujuan dari penelitian ini adalah untuk mempelajari perawatan mesin pada Wheel Loader di PT. XYZ. Metode yang digunakan dalam pengumpulan data meliputi observasi, wawancara, dan studi pustaka. Berdasarkan hasil penelitian, perawatan mesin Wheel Loader dilakukan secara berkala melalui daily autonomous maintenance dan preventive maintenance untuk memastikan alat dapat bekerja dengan baik. Hal ini dibuktikan dengan adanya sampling oil dan filter cut tidak adanya partikel yang berbahaya.
{"title":"Perawatan Mesin Alat Berat Wheel Loader PT. XYZ","authors":"Dimas Aldyansyah, Firman Sri Bagaskara, Muhammad Rama Aditya, Dimas Maulana Aji, Felderico Andreas Sitanggang, M. Khairi, Fajar Paundra","doi":"10.9744/jtm.20.1.18-23","DOIUrl":"https://doi.org/10.9744/jtm.20.1.18-23","url":null,"abstract":"Wheel Loader adalah peralatan yang digunakan untuk memindahkan material dan memuatnya ke dalam dump truck. Tujuan dari penelitian ini adalah untuk mempelajari perawatan mesin pada Wheel Loader di PT. XYZ. Metode yang digunakan dalam pengumpulan data meliputi observasi, wawancara, dan studi pustaka. Berdasarkan hasil penelitian, perawatan mesin Wheel Loader dilakukan secara berkala melalui daily autonomous maintenance dan preventive maintenance untuk memastikan alat dapat bekerja dengan baik. Hal ini dibuktikan dengan adanya sampling oil dan filter cut tidak adanya partikel yang berbahaya.","PeriodicalId":31956,"journal":{"name":"Jurnal Teknik Mesin","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84634651","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}
Perhiasan merupakan barang dekoratif yang banyak digunakan oleh manusia meskipun diklasifikasikan dalam kelompok kebutuhan tersier. Pada umumnya perhiasan banyak terbuat dari logam emas dengan bahan campuran logam lainnya. Proses casting merupakan salah satu teknik pembuatan produk perhiasan secara massal yang banyak dimanfaatkan oleh pengrajin perhiasan. Proses ini dilakukan dengan cara menuangkan material cair kedalam rongga cetakan yang telah dibentuk lalu didinginkan. Permasalahan yang ditemukan adalah bahwa proses casting perhiasan tidak dapat dilakukan dengan penuangan secara gravitasi sederhana, sehingga prosesnya selalu dibantu dengan mesin untuk menghindari terjadinya shrinkage porosity dengan cara mengatur temperaturnya pada kondisi suhu lelehan logam yang tepat agar dapat mengurangi kontak dengan udara pada saat logam dilelehkan dan dituangkan pada ruangan cetakan. Mesin vakum casting dalam hal ini digunakan untuk membantu membuat produk perhiasan sehingga permukaan menjadi halus sekalipun dengan detail yang rumit dan memastikan logam mengisi cetakan dengan baik. Selain itu, mesin vacuum casting yang dirancang lebih mudah dioperasikan oleh operator karena terdiri dari elemen pemanas menggunakan mekanisme stopper pneumatik dengan kapasitas pengecoran 400 gr. Performa mesin vacuum casting ini dapat memanaskan elemen pemanas selang waktu 1 jam 34 menit, dan waktu pengeluaran udara dari vacuum chamber dalam waktu 27 detik serta kualitas produk yang dihasilkan juga tanpa adanya cacat produk.
{"title":"Pemanfaatan Mesin Vacuum Casting Semi Otomatis untuk Kebutuhan Pembuatan Produk Perhiasan","authors":"Ninuk Jonoadji, Aldo Kurniawan, Ivan Siahaan","doi":"10.9744/jtm.20.1.24-30","DOIUrl":"https://doi.org/10.9744/jtm.20.1.24-30","url":null,"abstract":"Perhiasan merupakan barang dekoratif yang banyak digunakan oleh manusia meskipun diklasifikasikan dalam kelompok kebutuhan tersier. Pada umumnya perhiasan banyak terbuat dari logam emas dengan bahan campuran logam lainnya. Proses casting merupakan salah satu teknik pembuatan produk perhiasan secara massal yang banyak dimanfaatkan oleh pengrajin perhiasan. Proses ini dilakukan dengan cara menuangkan material cair kedalam rongga cetakan yang telah dibentuk lalu didinginkan. Permasalahan yang ditemukan adalah bahwa proses casting perhiasan tidak dapat dilakukan dengan penuangan secara gravitasi sederhana, sehingga prosesnya selalu dibantu dengan mesin untuk menghindari terjadinya shrinkage porosity dengan cara mengatur temperaturnya pada kondisi suhu lelehan logam yang tepat agar dapat mengurangi kontak dengan udara pada saat logam dilelehkan dan dituangkan pada ruangan cetakan. Mesin vakum casting dalam hal ini digunakan untuk membantu membuat produk perhiasan sehingga permukaan menjadi halus sekalipun dengan detail yang rumit dan memastikan logam mengisi cetakan dengan baik. Selain itu, mesin vacuum casting yang dirancang lebih mudah dioperasikan oleh operator karena terdiri dari elemen pemanas menggunakan mekanisme stopper pneumatik dengan kapasitas pengecoran 400 gr. Performa mesin vacuum casting ini dapat memanaskan elemen pemanas selang waktu 1 jam 34 menit, dan waktu pengeluaran udara dari vacuum chamber dalam waktu 27 detik serta kualitas produk yang dihasilkan juga tanpa adanya cacat produk.","PeriodicalId":31956,"journal":{"name":"Jurnal Teknik Mesin","volume":"69 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83890663","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}
Pengelasan logam tidak sejenis banyak diaplikasikan dengan tujuan memadukan beberapa sifat untuk saling melengkapi kekurangan masing-masing jenis logam. Kombinasi ini mampu memberikan peningkatan sifat mekanik dan mengurangi biaya. Oleh karena itu, pengelasan ST 42 dan AISI 304 dilakukan guna mendapatkan peningkatan sifat mekanik melalui kekuatan tarik, lalu didukung dengan foto makro untuk mengetahui lebar HAZ. Variasi posisi pengelasan 1G, 2G, 3G dengan menggunakan diameter elektroda 2 mm, 2,6 mm, dan 3,2 mm digunakan sebagai parameter yang diamati untuk mengetahui kekuatan tarik dan struktur makro yang diperoleh. Dari hasil penelitian didapatkan kekuatan tarik tertinggi menggunakan posisi pengelasan 2G diameter elektroda 3,2 mm sebesar 391,92 N/mm2, sedangkan kekuatan tarik terendah terjadi pada posisi pengelasan 3G diameter elektroda 2 mm sebesar 230,83 N/mm2. Sedangkan, hasil pengamatan struktur makro, HAZ terbesar terjadi pada posisi pengelasan 3G dengan diameter elektroda 3,2 mm dengan nilai 0,58 mm, serta nilai HAZ terkecil adalah 0,43 mm dengan posisi pengelasan 3G menggunakan diameter elektroda 2 mm. Hal ini menyatakan bahwa perbedaan diameter elektroda sangat mempengaruhi kekuatan tarik sambungan las, perbedaan hasil pengelasan ini disebabkan karena jumlah fluks pada elektroda.
{"title":"Pengaruh Variasi Posisi Pengelasan dan Diameter Elektroda pada Pengelasan Logam Tak Sejenis AISI 304 – ST42 terhadap Kekuatan Tarik dan Lebar HAZ","authors":"Eko Agung Setiawan, Afira Ainur Rosidah","doi":"10.9744/jtm.20.1.1-4","DOIUrl":"https://doi.org/10.9744/jtm.20.1.1-4","url":null,"abstract":"Pengelasan logam tidak sejenis banyak diaplikasikan dengan tujuan memadukan beberapa sifat untuk saling melengkapi kekurangan masing-masing jenis logam. Kombinasi ini mampu memberikan peningkatan sifat mekanik dan mengurangi biaya. Oleh karena itu, pengelasan ST 42 dan AISI 304 dilakukan guna mendapatkan peningkatan sifat mekanik melalui kekuatan tarik, lalu didukung dengan foto makro untuk mengetahui lebar HAZ. Variasi posisi pengelasan 1G, 2G, 3G dengan menggunakan diameter elektroda 2 mm, 2,6 mm, dan 3,2 mm digunakan sebagai parameter yang diamati untuk mengetahui kekuatan tarik dan struktur makro yang diperoleh. Dari hasil penelitian didapatkan kekuatan tarik tertinggi menggunakan posisi pengelasan 2G diameter elektroda 3,2 mm sebesar 391,92 N/mm2, sedangkan kekuatan tarik terendah terjadi pada posisi pengelasan 3G diameter elektroda 2 mm sebesar 230,83 N/mm2. Sedangkan, hasil pengamatan struktur makro, HAZ terbesar terjadi pada posisi pengelasan 3G dengan diameter elektroda 3,2 mm dengan nilai 0,58 mm, serta nilai HAZ terkecil adalah 0,43 mm dengan posisi pengelasan 3G menggunakan diameter elektroda 2 mm. Hal ini menyatakan bahwa perbedaan diameter elektroda sangat mempengaruhi kekuatan tarik sambungan las, perbedaan hasil pengelasan ini disebabkan karena jumlah fluks pada elektroda.","PeriodicalId":31956,"journal":{"name":"Jurnal Teknik Mesin","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86509640","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}
Paper ini menginvestigasi bagaimana gerakan rolling, pitching, dan gerakan vertikal dari sebuah truk dengan tiga axle. Analisa ini diselesaikan dengan melakukan pemodelan dinamis terlebih dahulu pada truk kemudian setelah model dinamik didapatkan selanjutnya dilakukan pembuatan model Simulink pada software Matlab. Analisa dilakukan dengan membuat asumsi kendaraan melewati sebuah polisi tidur. Kendaraan melewati polisi tidur dengan kecepatan yang disesuaikan dengan kecepatan roda berputar dimana roda digerakkan oleh sebuah motor yang tertanam pada velg atau disebut dengan in wheel motor. Hasil pergerakan dari masing-masing bagian dari truk yang dipertimbangkan ditampilkan dalam bentuk grafik. Dari hasil tersebut dapat terlihat bahwa truk membutuhkan sebuah alat untuk meredam getaran dari rolling. Hal ini mengakibatkan tinggi perpindahan maksimum dari tempat duduk adalah 11.2 cm yang dimana hampir sama dengan tinggi maksimum polisi tidur yang tentu akan mengurangi kenyamanan pengemudi.
{"title":"Analisa Gerakan Rolling, Pitching, dan Vertikal Truk 3 Axle dengan Penggerak Motor Listrik IWM pada Saat Melewati Polisi Tidur","authors":"Ivan Christian Hernando","doi":"10.9744/jtm.20.1.5-12","DOIUrl":"https://doi.org/10.9744/jtm.20.1.5-12","url":null,"abstract":"Paper ini menginvestigasi bagaimana gerakan rolling, pitching, dan gerakan vertikal dari sebuah truk dengan tiga axle. Analisa ini diselesaikan dengan melakukan pemodelan dinamis terlebih dahulu pada truk kemudian setelah model dinamik didapatkan selanjutnya dilakukan pembuatan model Simulink pada software Matlab. Analisa dilakukan dengan membuat asumsi kendaraan melewati sebuah polisi tidur. Kendaraan melewati polisi tidur dengan kecepatan yang disesuaikan dengan kecepatan roda berputar dimana roda digerakkan oleh sebuah motor yang tertanam pada velg atau disebut dengan in wheel motor. Hasil pergerakan dari masing-masing bagian dari truk yang dipertimbangkan ditampilkan dalam bentuk grafik. Dari hasil tersebut dapat terlihat bahwa truk membutuhkan sebuah alat untuk meredam getaran dari rolling. Hal ini mengakibatkan tinggi perpindahan maksimum dari tempat duduk adalah 11.2 cm yang dimana hampir sama dengan tinggi maksimum polisi tidur yang tentu akan mengurangi kenyamanan pengemudi.","PeriodicalId":31956,"journal":{"name":"Jurnal Teknik Mesin","volume":"95 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73112137","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}
Sebuah perusahaan yang bergerak di bidang produksi plastik menggunakan mesin injection molding di Sidoarjo. Beberapa produk yang dihasilkan adalah ember, pot, bola biopori, dan baskom. Pada proses produksinya, perusahaan tersebut sering mengalami kendala banyaknya jumlah produk yang cacat karena tidak memiliki pengaturan mesin yang tepat untuk produksi. Penelitian ini bertujuan untuk mendapatkan pengaturan mesin yang tepat agar jumlah produk yang cacat dapat berkurang dan meningkatkan keuntungan perusahaan. Dari diskusi dengan pengelola perusahaan, beberapa faktor yang diduga berpengaruh adalah temperatur nozzle (TNozzle), temperatur leleh plastik sebelum memasuki nozzle (T1), temperatur di tengah barrel (T2), temperatur ketika biji plastik keluar dari hopper (T3), tekanan injeksi, dan tekanan clamping. Rancangan eksperimen 26-2 dengan dua replikasi dipilih karena keterbatasan sumberdaya yang tersedia untuk menerapkan rancangan faktorial penuh. Dari hasil ANOVA didapatkan bahwa faktor T1, T3, dan interaksi T1-T2 paling berpengaruh terhadap kecacatan produk. Pengaturan TNozzle pada 230°𝐶, T1 pada 215°𝐶, T2 pada 190°𝐶, T3 pada 185°𝐶, tekanan injeksi 90%, dan tekanan clamping 115 bar terbukti dapat mengurangi jumlah produk cacat secara signifikan.
{"title":"Implementasi Perancangan Eksperimen untuk Mengurangi Kecacatan di Proses Injection Molding P.T. X","authors":"Didik Wahjudi, Roynaldo Roynaldo","doi":"10.9744/jtm.20.1.13-17","DOIUrl":"https://doi.org/10.9744/jtm.20.1.13-17","url":null,"abstract":"Sebuah perusahaan yang bergerak di bidang produksi plastik menggunakan mesin injection molding di Sidoarjo. Beberapa produk yang dihasilkan adalah ember, pot, bola biopori, dan baskom. Pada proses produksinya, perusahaan tersebut sering mengalami kendala banyaknya jumlah produk yang cacat karena tidak memiliki pengaturan mesin yang tepat untuk produksi. Penelitian ini bertujuan untuk mendapatkan pengaturan mesin yang tepat agar jumlah produk yang cacat dapat berkurang dan meningkatkan keuntungan perusahaan. Dari diskusi dengan pengelola perusahaan, beberapa faktor yang diduga berpengaruh adalah temperatur nozzle (TNozzle), temperatur leleh plastik sebelum memasuki nozzle (T1), temperatur di tengah barrel (T2), temperatur ketika biji plastik keluar dari hopper (T3), tekanan injeksi, dan tekanan clamping. Rancangan eksperimen 26-2 dengan dua replikasi dipilih karena keterbatasan sumberdaya yang tersedia untuk menerapkan rancangan faktorial penuh. Dari hasil ANOVA didapatkan bahwa faktor T1, T3, dan interaksi T1-T2 paling berpengaruh terhadap kecacatan produk. Pengaturan TNozzle pada 230°𝐶, T1 pada 215°𝐶, T2 pada 190°𝐶, T3 pada 185°𝐶, tekanan injeksi 90%, dan tekanan clamping 115 bar terbukti dapat mengurangi jumlah produk cacat secara signifikan.","PeriodicalId":31956,"journal":{"name":"Jurnal Teknik Mesin","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76938235","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}
Rizki Ramadoni, F. Firdaus, R. Romli, Sailon Sailon, A. Afg, M. Nugraha
Wood is increasingly difficult to obtain due to the use of excess wood. Many efforts were made to replace wood, one of which was composite material. This study aims to determine the most optimal bending strength with the influence of variations in volume fractions and fiber orientation in hybrid composites with luffa fibers and hyacinth fibers. In making composites using the hand lay-up method with alaklization treatment on gambas and hyacinth fibers using 5% NaOH which is varied with the volume fraction used in this study with the ratio of resin: hyacinth: gambas is (60%:20% :20%),(70%:15%:15%), as well as (80% :10%:10%) and the orientation of the fibers with the arrangement of the luffa / hyacinth / luffa layer is (0°/ 45 °/ 90°), (0˚/45˚/0˚), (90˚/0˚/90˚). Bending testing was performed with ASTM D790 standard and hypothesis testing using the two-way ANOVA method. From the results of bending testing, the most optimal strength value was found, which was 43.33 N / mm2, where the value was not higher than the bending strength value in the multiplex, which was 17.53 N / mm2. Meanwhile, the results of hypothesis testing are that there is an influence on the volume fraction factor, the direction of fiber orientation and the interaction with bending forces.
由于过度使用木材，木材越来越难以获得。人们做了许多努力来取代木材，其中一种是复合材料。本研究旨在确定丝瓜纤维和风信子纤维混合复合材料的最优抗弯强度，以及体积分数和纤维取向的变化对复合材料抗弯强度的影响。用5% NaOH对甘草纤维和风信子纤维进行碱化手铺法制备复合材料，树脂:风信子:甘草纤维的比例分别为(60%:20%:20%)、(70%:15%:15%)和(80%:10%:10%)，丝瓜/风信子/丝瓜层的排列方向分别为(0°/ 45°/ 90°)、(0˚/45˚/0˚)、(90˚/0˚/90˚)。弯曲试验采用ASTM D790标准，采用双因素方差分析方法进行假设检验。从弯曲试验结果中，发现最优强度值为43.33 N / mm2，其值不高于复合层的弯曲强度值17.53 N / mm2。同时，假设检验结果表明，体积分数因子、纤维取向方向以及与弯曲力的相互作用均有影响。
{"title":"Pengaruh Fraksi Volume dan Orientasi Serat Pada Komposit Hibrid Berpenguat Serat Gambas serta Eceng Gondok Terhadap Kekuatan Bending","authors":"Rizki Ramadoni, F. Firdaus, R. Romli, Sailon Sailon, A. Afg, M. Nugraha","doi":"10.30630/jtm.15.2.891","DOIUrl":"https://doi.org/10.30630/jtm.15.2.891","url":null,"abstract":"Wood is increasingly difficult to obtain due to the use of excess wood. Many efforts were made to replace wood, one of which was composite material. This study aims to determine the most optimal bending strength with the influence of variations in volume fractions and fiber orientation in hybrid composites with luffa fibers and hyacinth fibers. In making composites using the hand lay-up method with alaklization treatment on gambas and hyacinth fibers using 5% NaOH which is varied with the volume fraction used in this study with the ratio of resin: hyacinth: gambas is (60%:20% :20%),(70%:15%:15%), as well as (80% :10%:10%) and the orientation of the fibers with the arrangement of the luffa / hyacinth / luffa layer is (0°/ 45 °/ 90°), (0˚/45˚/0˚), (90˚/0˚/90˚). Bending testing was performed with ASTM D790 standard and hypothesis testing using the two-way ANOVA method. From the results of bending testing, the most optimal strength value was found, which was 43.33 N / mm2, where the value was not higher than the bending strength value in the multiplex, which was 17.53 N / mm2. Meanwhile, the results of hypothesis testing are that there is an influence on the volume fraction factor, the direction of fiber orientation and the interaction with bending forces.","PeriodicalId":31956,"journal":{"name":"Jurnal Teknik Mesin","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83753538","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}
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