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All Journal Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics Rotasi AUSTENIT Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Jurnal Rekayasa Material, Manufaktur & Energi Jurnal Engine: Energi, Manufaktur, dan Material Jurnal Elkolind : Jurnal Elektronika dan Otomasi Industri Budimas : Jurnal Pengabdian Masyarakat Jurnal Pendidikan Teknik Mesin Undiksha International Journal of Science, Engineering and Information Technology JISO : Journal of Industrial and Systems Optimization Sawala : Jurnal pengabdian Masyarakat Pembangunan Sosial, Desa dan Masyarakat Jurnal Teknik Mesin Sinergi Jurnal Polimesin PROCEEDINGS CONFERENCE ON DESIGN AND MANUFACTURE AND ITS APPLICATION
Rizal Indrawan
Politeknik Perkapalan Negeri Surabaya
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Analysis of Threshold Angle Variations on The Quality of Finishing Free-form Surface in CNC Milling Process Dhika Aditya Purnomo; Fipka Bisono; Rizal Indrawan
International Journal of Science, Engineering, and Information Technology Vol 6, No 2 (2022): IJSEIT Volume 06 Issue 02 July 2022
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/ijseit.v6i2.14952

Abstract

The machining process using a combination of steep and shallow strategy is the most widely used strategy for the finishing process on complex models that have many areas of steep walls and shallow floors. Using a single machining strategy on the entire model can lead to long machining times and poor surface finish quality. The steep and shallow strategy can efficiently detect parts of the model that have steep contours and those that have shallow contours. In other words, this strategy can analyze the model surface angle at runtime to identify and divide the machining zone based on the slope angle or commonly called the threshold angle. In this context, the selection of the threshold angle is very important when carrying out the finishing process on free-form surfaces to produce a good surface quality. This study was conducted to determine the optimum threshold angle that can produce the minimum surface roughness between steep areas and shallow areas. Threshold angles that were varied were 20°, 30° and 40°. Machining was carried out using Ballnose type cutting tools with a diameter of 6 mm. Then the stepover and stepdown is 0.1 mm for the finishing process on the surface of the propeller product made of Aluminum by using a CNC Milling machine. From the experimental results, the most optimum threshold angle is at an angle of 40° with an average roughness value in the steep area of 1.9 mm and in the shallow area of 1.3mm and a total average roughness of 1.6mm.
Effect of Temperature and Heating Resistant Time on Wear Properties of Molybdenum/Alumina Composites Rizal Indrawan
Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics AL-FIZIYA JOURNAL OF MATERIALS SCIENCE, GEOPHYSICS, INSTRUMENTATION AND THEORETICAL PHYSICS VOL.5, N
Publisher : Physics Study Programme, Faculty of Science and Technology UIN Syarif Hidayatullah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/fiziya.v5i2.24455

Abstract

The wear properties of metals are very important in manufacturing. This is evidenced in the many studies that analyze the wear properties of a metal. This study uses Metal Matrix Composites, where the manufacturing process uses metal as the matrix and ceramics as reinforcement with powder metallurgy manufacturing methods. Where the powder of the two composite materials is compacted and heated at a certain temperature to form a solid composite material. The purpose of this study is to ensure that the mechanical properties of the Mo/Al2O3 composite are greater than that of the constituent material. In this study, molybdenum powder was used as a matrix material and alumina as a reinforcing material. Mo has excellent mechanical properties, namely hardness and excellent wear resistance. Al2O3 has excellent wear resistance properties. Research variables include heating temperature of 900, 1000, 1100°C and holding time of heating process for 0.5, 1, 1.5 hours with compaction pressure of 125 MPa and weight fraction of Mo by 80% and Al2O3 by 10%. Based on the test results, the highest sinter density was found at a sintering temperature of 1100oC and a sintering holding time of 1.5 hours at 6.831g/cm3. The value of porosity and wear rate is getting lower, namely 28.8% and the wear rate is 0.0012 mm/minute.
Efek Sinergis Alumina Trihydrate Dan Melamine Cyanurate Terhadap Ketahanan Api Glass Fiber Reinforced Polymer (GFRP) Ridha Inayah; Wiwik Dwi Pratiwi; Rizal Indrawan
Jurnal Engine: Energi, Manufaktur, dan Material Vol 7, No 1 (2023)
Publisher : Proklamasi 45 University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30588/jeemm.v7i1.1463

Abstract

Glass Fiber Reinforced Polymer (GFRP) in train interior components must have good fire resistance properties. Therefore, it is necessary to add a flame retardant compound to the GFRP material. In this study, Alumina Trihydrate (ATH) and Melamine Cyanurate (MCA) were mixed into a vinyl ester resin. The method of making GFRP refractory specimens uses the hand lay-up method. GFRP is mixed and tested for fire resistance standard ORE B 106.2. The results obtained after the addition of 25% ATH, a mixture of 25% ATH with 5% MCA, 10% MCA with 25% ATH, and 15% MCA with 25% ATH, 25% ATH in the outer layer, and a mixture of 5% MCA with 25% ATH in the outer layer of the resin weight is able to increase fire resistance. Optimum GFRP fire resistance at the addition of 25% ATH to the weight of the resin in the outer layer. The result of the burned area is 84.84 cm² with a fire extinguishing time of 0.33 seconds after the fire source leaves the specimen. The results show that the mixture of ATH and MCA has a synergistic effect on fire resistance properties, so it becomes a recommendation for interior sidewall panels and ceiling panels on trains according to the ORE B 106.2 standard
Effect of Temperature and Heating Resistant Time on Wear Properties of Molybdenum/Alumina Composites Rizal Indrawan
Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics AL-FIZIYA JOURNAL OF MATERIALS SCIENCE, GEOPHYSICS, INSTRUMENTATION AND THEORETICAL PHYSICS VOL.5, N
Publisher : Physics Study Programme, Faculty of Science and Technology UIN Syarif Hidayatullah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/fiziya.v5i2.24455

Abstract

The wear properties of metals are very important in manufacturing. This is evidenced in the many studies that analyze the wear properties of a metal. This study uses Metal Matrix Composites, where the manufacturing process uses metal as the matrix and ceramics as reinforcement with powder metallurgy manufacturing methods. Where the powder of the two composite materials is compacted and heated at a certain temperature to form a solid composite material. The purpose of this study is to ensure that the mechanical properties of the Mo/Al2O3 composite are greater than that of the constituent material. In this study, molybdenum powder was used as a matrix material and alumina as a reinforcing material. Mo has excellent mechanical properties, namely hardness and excellent wear resistance. Al2O3 has excellent wear resistance properties. Research variables include heating temperature of 900, 1000, 1100°C and holding time of heating process for 0.5, 1, 1.5 hours with compaction pressure of 125 MPa and weight fraction of Mo by 80% and Al2O3 by 10%. Based on the test results, the highest sinter density was found at a sintering temperature of 1100oC and a sintering holding time of 1.5 hours at 6.831g/cm3. The value of porosity and wear rate is getting lower, namely 28.8% and the wear rate is 0.0012 mm/minute.
Rancang Bangun Support and Roll Feeder Steel Plate pada Mesin Laser Cutting Rizal Indrawan; Bayu Wiro Karuniawan; Fipka Bisono; Dhika Aditya Purnomo; Fais Hamzah; Rahmat Wahyu Jati Pratama
Jurnal Sinergi Jurusan Teknik Mesin Vol 21, No 2 (2023): Oktober 2023
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v21i2.4385

Abstract

Abstrak: Perusahaan fabrikasi merupakan perusahaan yang bergerak pada pembuatan komponen dengan menggunakan mesin laser cutting. Saat ini perusahaan fabrikasi mengalami kesulitan dalam memenuhi permintaan customer dikarenakan waktu produksi yang cukup lama. Permasalahan yang terjadi pada proses produksi tersebut dikarenakan saat ini proses memposisikan pelat dilakukan masih menggunakan metode yang manual, yaitu mengangkat lembaran pelat dan diletakkan pada mesin laser cutting sehingga dari segi waktu masih kurang efisien dan kurang optimal pada saat proses produksi secara massal, sedangkan produk yang dihasilkan juga memiliki tingkat kepresisian yang rendah. Berdasarkan permasalahan tersebut, dalam penelitian ini dilakukan rancang bangun mesin steel plate roll feeder pada mesin laser cutting. Proses pembuatan mesin akan menggunakan metode Ulrich dari mulai identifikasi kebutuhan mesin, pemilihan konsep sampai perwujudan desain. Berdasarkan hasil perancangan dengan metode Ulrich maka terpilihlah konsep desain 1. Pembuatan support and roll feeder menggunakan welding machine, mesin bubut, dan gerinda tangan. Kinerja support and roll feeder didapatkan dari hasil lima pengujian dinyatakan sesuai standar keberasilan mencapai 100%, dengan total waktu untuk memasukkan plate coilI yaitu 45 detik untuk proses cutting satu lembar plate. Kata kunci : Rancang Bangun, Laser Cutting, Support and Roll Feeder, Steel Plate
SOSIALISASI PENGENALAN MESIN PRODUKSI BERBASIS CNC SISWA SMK BABAT LAMONGAN Rizal Indrawan
BUDIMAS : JURNAL PENGABDIAN MASYARAKAT Vol 6, No 1 (2024): BUDIMAS : Jurnal Pengabdian Masyarakat
Publisher : LPPM ITB AAS Indonesia Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29040/budimas.v6i1.13080

Abstract

Abstract: Currently, the production process using cnc machines has been able to create various kinds of components to support highly advanced technology. Such as in the fields of health, automotive, and transportation both on land, sea and air. Machine production can also be done conventionally or automatically depending on the type of machine used. In order to provide knowledge and increase the ability of SMK students, it is necessary to hold socialization from universities and institutions that have competence in the machining process. The method of implementation is to provide theory or insight into the introduction of production machines to how to work using various kinds of tools and chisels on various materials that are machined using cnc machines. This is very important to do so that it can be used as a provision for participants in facing global challenges and being able to absorb the needs of workers who are experts in machining using cnc machines. Kata kunci: CNC Machining, Machining Process, Technology, Workpiece, Component
ANALISIS PENGARUH SURFACE ROUGHNESS, TEMPERATUR SUBSTRAT, DAN JENIS MATERIAL ABRASIVE TERHADAP BIAYA PROSES MENGGUNAKAN METODE TAGUCHI Farizi Rachman; Arun Sukma Mutiara; Rizal Indrawan; Tri Andi Setiawan; Fipka Bisono; Dhika Aditya Purnomo; Fais Hamzah
AUSTENIT Vol. 16 No. 1 (2024): AUSTENIT: April 2024
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/austenit.v16i1.7389

Abstract

The wrapping up and portray fabricating handle may be a organize of venture work at PT. Lintech Duta Pratama. Disgraceful portray forms result in absconds. Items that have absconds require repair so they can at that point be sent to clients. Rehashed repair forms cause expanded handle costs and obstruct item conveyance. In this manner, to get great item quality and diminish handle costs, inquire about to obtain ideal parameter settings is required. The method parameters considered are surface harshness, substrate temperature, and sort of abrasive fabric. The experimental design used is the taguchi method in the form of an orthogonal matrix . From the exploratory comes about, the ideal combination of handle parameters for prepare costs was gotten, to be specific surface harshness at level 1 with a esteem of 50 μm, temperature at level 2 with a esteem of 34 ° C, and rough fabric sort at level 2 with steel coarseness.
Pengaruh Ketebalan Core Komposit Sandiwch Berpenguat Serat Pelepah Pisang-Kayu Jati untuk Aplikasi Partisi Peredam Suara pada Kamar Mesin Kapal Indrawan, Rizal; Prasaja, Sasti
Rekayasa Material, Manufaktur dan Energi Vol 6, No 1: Maret 2023
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v6i1.13676

Abstract

Natural fiber composites are one of the innovative materials in an effort to solve the waste problem. Banana midrib and sawdust are plantation and forestry wastes whose utilization is very minimal. This research was conducted to make sandwich composites reinforced with banana midrib fiber and sawdust which is intended to be able to replace glasswool to reduce noise in the engine control room. The use of glasswool is not good for health which if the particles are inhaled it causes respiratory problems. The thickness of the core in the sandwich composite was varied by 2, 4, and 6 mm. Sound absorption testing is carried out according to the ASTM E1050-19 standard. The hand lay up method and polyester resin were used to make natural fiber sandwich composites. The highest sound absorption coefficient on specimens 2-35 is 0.77. All specimens of sandwich composites produced in this study met the requirements for sound absorption installations in buildings (ɑ = 0.15). Along with the addition of the volume fraction reinforced on the core gives a parabolic effect with the addition of 35% giving the best results at thicknesses of 2 and 6 mm. The thinner the core provides a better sound absorption coefficient than other thicknesses.
CAD-BASED 3D PRINTING EDUCATION TO ENHANCE THE COMPETENCE OF VOCATIONAL STUDENTS OF SMK BABAT LAMONGAN Juniani, Anda Iviana; Wibisono, Fipka; Kurniawan, Bayu W.; Indrawan, Rizal; Hamzah, Fais; Sidi, Pranowo; Purnomo, Dhika A.; Rachman, Farizi; Ardliana, Thina
Sawala : Jurnal pengabdian Masyarakat Pembangunan Sosial, Desa dan Masyarakat Vol 5, No 1 (2024): Sawala : Jurnal pengabdian Masyarakat Pembangunan Sosial, Desa dan Masyarakat
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/sawala.v5i1.51152

Abstract

Printing in three dimensions is becoming increasingly vital for vocational students. Incorporating 3D printing into vocational training courses and educational programs provides students with numerous benefits and prepares them for technical professions in various industries. This article aims to develop 3D printing training that is CAD-based for SMK Babat Lamongan. Students can experience real-world models of complex mathematical equations, graphs, and arrangements through 3D printing. It enables students with difficulty visualizing these concepts to comprehend them more readily. By learning 3D printing now, vocational students are preparing for the changing job market and global economy of the twenty-first century. This article shows that skills in 3D printing are precious for vocational students. They provide students with hands-on experience, foster creativity, and prepare them for technical vocations. Incorporating 3D printing into vocational education programs can give students the necessary skills for the future workforce.
Design of Bearing Housing JIG and Fixture for Machining Process in Vertical CNC Turning Machine Indrawan, Rizal; Uhaque, Salsabila Diya; Purnomo, Dhika Aditya; Hamzah, Fais; Karuniawan, Bayu Wiro
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 9, No 3 (2024): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55679/enthalpy.v9i3.49007

Abstract

Bearing housing merupakan salah satu produk yang diproduksi di PT. X, yang memiliki target produksi sebesar 150 pcs/bulan. PT. X adalah salah satu perusahaan manufaktur terbesar di indonesia yang bergerak di bidang pengecoran pengecoran investasi dan permesinan canggih. Proses pembubutan untuk rumah bearing memiliki beberapa kelemahan, yaitu membutuhkan lebih banyak mesin bubut CNC untuk memproses setiap bagian rumah bearing. Hal ini menyebabkan proses bongkar muat yang memakan waktu. Selain itu, ada kelemahan lain yang menyebabkan diameter yang tidak konsentris yang akan dianggap sebagai produk yang tidak baik atau ditolak. Mesin ini menggunakan fixture dan penjepit sebagai penghenti untuk membantu dalam pemrosesan produk pengecoran secara massal. Untuk membantu proses finishing produksi rumah bearing dengan cepat, maka dibuatlah alat bantu seperti jig dan fixture, sehingga dapat mempercepat proses pengerjaan produk dan mengurangi waktu pengerjaan. Desain jig dan fixture bearing housing menggunakan Autodesk Fusion 360. Penelitian ini menggunakan metode Ulrich untuk membantu proses perancangan dan pengembangan produk dengan membandingkan 3 konsep yang berbeda. ketiga konsep tersebut dipilih karena sesuai dengan kebutuhan biaya yang murah, perawatan yang mudah, pengoperasian yang mudah, dan produksi yang mudah. Kata kunci: Jig, Fixture, Jig dan Fixture, Bearing Housing, CNC Bubut Vertikal, Bubut, Metode Ulrich
Co-Authors Abdulloh Sami Alfaris Achmad Faizal Cholis Achmad Syahrul Rohman Aditya Maharani Agus Khumaidi Ahmad Bagus Asmara Dana Anda Iviana Juniani Arfianto, Afif Zuhri Arum Sukma Mutiara Arun Sukma Mutiara Asri, Purwidi Bayu Wiro Karuniawan Bayu Wiro Kurniawan Budianto Budianto Dhika Aditya Purnomo Dhika Aditya Purnomo Dimas Pristovani Riananda Egalita Islami Bilqis Fais Hamzah Fais Hamzah Farizi Rachman Fipka Bisono Fiqih Baktian Rahmansya Fitri Hardiyanti Gampang Gedhe Sasongko Hamzah, Fais Heroe Poernomo Hisyam Rafly Syahputra Isa Rachman Jasillatul Hikmiyah Karuniawan, Bayu Wiro Kholiqul Misbah Kurniawan, Bayu W. M. Novian Rizky N.P Mat Syai'in Mat Syai’in Mohammad Adjie Irfansah Mohammad Miftachul Munir Muhammad Khoirul Hasin Muhammad Nur Aslam Nanda Evan Renato Noorman Rinanto Obaja Eden Sentosa Riyanto Pradita Eko Kuncahyo Pranidiya Otaviya Ningrum Pranowo Sidi Prasaja, Sasti Purnomo, Dhika A. Putu Dana Karningsih Rachmad Syafikri Rahmat Wahyu Jati Pratama Ramadhan, Novalliansyah Ramadhan Raul Taka Prakusya Rekadian Arif Rena Riza Umami Ridha Inayah Ridha Inayah Ridhani Anita Fajardini Rio Akmamul Cahya Kusuma Robbi Juwantoro Rohmatuka, Moh. W. Ryan Yudha Adhitya Sandy Amrullah Sasti Prajasa Sharon Diaz Rahayu Thina Ardliana, Thina Tri Andi Setiawan Tri Andi Setiawan Tri Tyasmihadi Tusila, Fonda Jiwa Arkananta Tusila Uhaque, Salsabila Diya Wiwik Dwi Pratiwi Wiwik Dwi Pratiwi