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All Journal Rekayasa Mesin Jurnal Rekayasa Mesin Journal of Mechanical Engineering Science and Technology JOURNAL OF SCIENCE AND APPLIED ENGINEERING INTEK: Jurnal Penelitian Jurnal Teknik Mesin Indonesia Mekanika: Majalah Ilmiah Mekanika Jurnal Energi dan Teknologi Manufaktur Eksergi: Jurnal Teknik Energi Jurnal Pengabdian Kepada Masyarakat Ceria Jurnal Pengabdian Kepada Masyarakat Bersinergi Inovatif Mars: Jurnal Teknik Mesin, Industri, Elektro dan Ilmu Komputer Journal of Evrimata: Engineering and Physics
Hilmi Iman Firmansyah
Politeknik Negeri Malang
Aerospace Engineering Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Nursing Social Sciences Other

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Analisis Pengembangan Produk Mesin Pengiris Keripik Pisang dengan Metode Quality Function Deployment (QFD) Pratama, Rico Wahyu; Muzaki, Mochamad; Sari, Nurlia Pramita; Firmansyah, Hilmi Iman; Takwim, R.N. Akhsanu
Jurnal Rekayasa Mesin Vol. 19 No. 2 (2024): Volume 19, Nomor 2, Agustus 2024
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v19i2.4672

Abstract

Wilayah Kabupaten Malang merupakan dataran tinggi yang dikelilingi oleh beberapa gunung pada ketinggian 250-500 meter di atas permukaan air laut. Adapun salah satu produk olahan yang paling populer di daerah tersebut adalah keripik pisang. Pembuatan keripik pisang melaui beberapa tahapan diantaranya pengupasan kulit, pengirisan, penggorengan dan pemberian bumbu. Diantara beberapa tahapan ini proses pegirisan membutuhkan waktu yang cukup lama dibandingkan proses yang lain. Permasalahan yang terjadi pada customer adalah hasil dari irisan   kotor karena disebabkan getah dari buah pisang yang menempel pada pisau pengiris, dan kapasitas produksi masih terbatas. Mesin perajang yang pernah digunakan masih kurang aman, kapasitas terbatas dan membutuhkan daya listrik yang cukup tinggi. Sedangkan alat perajang manual yang digunakan saat ini juga mempunyai beberapa kekurangan diantaranya sering melukai tangan, hasil dari ketebalan rajangan tidak konsisten, kurang sempurna dan kapasitas produksi masih terbatas. Sehingga perlu adanya penelitian dengan tujuan untuk mengembangkan mesin pengiris keripik pisang yang sudah ada sesuai dengan kebutuhan produsesn keripik pisang. Penelitian ini bertujuan mengembangkan mesin pengiris keripik pisang dengan metode Quality Function Deployment. Dalam pengaplikasian QFD kebutuhan dan keinginan konsumen atau sering disebut  Voice of Customer (VoC) dipetakan dalam alat yang bernama  House of Quality (HoQ). Setelah dilakukan interview kemudian pembentukan desain matriks pada model HoQ, ditemukan bahwa produsen keripik buah apel mengingiinkan perajang yang mampu menhasilkan tebal rajangan 1,5 - 3mm dengan kualitas dan performa yang lebih baik dibandingkan alat yang sudah ada. Kemudian hasil benchmarking menunjukkan produk yang dikembangkan memiliki keunggulan yang lebih baik dibandingkan produk yang sudah ada.Setelah dilakukan pengolahan data maka dapat disimpulkan bahwaterpilih konsep dengan kombinasi putaran rpm diatur menggunakan dimmer, ketebalan rajangan diatur dengan baut tekan, tuas pengarah menggunakan pegas tarik dan model mesin tipe vertikal.
Pengaruh Panjang Serat terhadap Kekuatan Tarik Fiber Metal Laminate Composite Hanif Arsalan Dani Subekti; Hilmi Iman Firmansyah
Mars : Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 2 No. 5 (2024): Oktober : Mars : Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer
Publisher : Asosiasi Riset Teknik Elektro dan Informatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/mars.v2i5.347

Abstract

This study aims to evaluate the effect of ramie fiber length on the tensile strength of Fiber Metal Laminate (FML) hybrid composites. The background of this research is the saturation with the use of synthetic composite materials, which encourages the search for renewable materials to replace synthetic fibers. In this study, ramie fibers were immersed in a 6% NaOH solution before use, and the composite manufacturing process was carried out using the hand lay-up method. Annealed Aluminum 1100 was used as the laminating layer. The results of the study showed that the highest tensile strength was obtained in composites with a ramie fiber length of 5 cm, with a tensile strength of approximately 105 MPa. These findings indicate the potential of using ramie fibers as a sustainable and efficient alternative in FML hybrid composite applications.
Pengaruh fraksi volume terhadap kekuatan tarik hibrid komposit serat pelepah pisang - serat kaca bermatriks epoksi Muhammad Galih; Hilmi Iman Firmansyah
Jurnal Teknik Mesin Indonesia Vol. 20 No. 1 (2025): Vol. 20 No. 1 (2025): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v20i1.701

Abstract

Banana leaf is a part of the banana that is rarely utilized and even used as waste by the Indonesian people. Inside the banana leaf there are fibers that can be used as a hybrid composite reinforcement material. The choice of glass fiber is because it has good strength value, light weight, and low price. This study has a goal to determine the effect of volume fraction on the tensile strength of hybrid composites of banana leaf fibers and epoxy-matrixed glass fibers. The fibers were soaked in 5% NaOH water. The volume fractions used were 40%, 50%, and 70% fiber. The specimen size standard used is ASTM D638-14 and the composite manufacturing method uses the Hand lay-up method. After conducting the tensile testing process, it was found that the 70% volume fraction had the highest tensile strength value with a stress value of 80.2 MPa and a strain value of 0.07%.
Impact of Print Speed and Nozzle Temperature on Tensile Strength of 3D Printed ABS for Permanent Magnet Turbine Systems Wirawan, Wirawan; Firmansyah, Hilmi Iman; Adiwidodo, Satworo; Mustapa, Mohammad Sukri
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 9, No 1 (2025)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v9i12025p090

Abstract

Operational parameters must be integrated into turbine systems' main components, which are determined by turbine systems' functional requirements. The need for producing component designs more effectively raises the possibility of using additive manufacturing. The study focuses on the optimization of the mechanical properties of the principal components of magnetic turbines manufactured with 3D printers using Acrylonitrile Butadiene Styrene (ABS), by changing the temperature and speed of the nozzle. The approach consisted of modeling a standard test piece in CAD software and producing ABS-based test pieces using a 3D printer with print speeds of 50, 70, 90, and 110 mm/s and temperatures of 230, 240, 250, and 260 °C. The tensile properties of the samples were determined according to ASTM D638-14 Type I, and the results reveal a consistently greater tensile strength for the parts with high nozzle temperatures of approximately 250 °C and lower print speeds of 50 and 70 mm/s. At higher speeds of 90 and 110 mm/s, though the nozzle temperature has little effect on tensile strength, suggesting that the effect of other parameters is more significant. Whatever the print speed, at higher nozzle temperature (250℃), average tensile strength was improved. Control of nozzle temperature is paramount in increasing tensile strength in the 3D printing process performed at low speeds. Also, the average tensile strength is consistent and normalized. For all print speed values, a 250℃ nozzle produces consistently higher average tensile strength than a 235℃ nozzle. Analysed the parameters for print speed and nozzle temperature, providing optimal results for stronger and more reliable parts for use in turbines.
Corrosion Rate of Black Chromium Coating Result of Electroplating on Copper Hadi, Syamsul; Valeria, Sza Sya Monica; Adiwidodo, Satworo; Amrullah, Utsman Syah; Takwim, R.N. Akhsanu; Firmansyah, Hilmi Iman
INTEK: Jurnal Penelitian Vol 7 No 2 (2020): October 2020
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/intek.v7i2.2681

Abstract

The problem faced is that the white chromium coating has a low selling value or aesthetic value than the black chromium layer which is more in demand, especially by the younger generation who prioritizes aesthetics. The purpose of the corrosion test was to determine the corrosion resistance ability of the black chromium coating resulting from the electroplating process on the relationship between the solution temperature and the immersion time of copper in a corrosive solution. Corrosion test methods include literature studies, field observations, weighing specimens, immersing specimens in corrosive solutions, weighing specimens, calculating corrosion rates, and data analyzing. Corrosion test results show that the higher the temperature of the solution and the longer the immersion time, the smaller the corrosion rate for the lowest conditions at 30oC and a duration of 5 minutes with a corrosion rate of 0.2004 mm/year and the highest conditions at a temperature of 50oC and a duration of 9 minutes at a rate of corrosion of 0.0108 mm/year.
OPTIMASI AERODINAMIKA BODI MOBIL HEMAT ENERGI KEN DEDES ELECTRIC EVO 3 MENGGUNAKAN METODE COMPUTATIONAL FLUID DYNAMICS (CFD) Fakhruddin, Muhammad; Wicaksono, Hangga; Baananto, Fauzan; Firmansyah, Hilmi Iman; Sari, Nurlia Pramita; Muzaki, Mochamad; Akbarsyah D, Khelvindra Rizky; Hardyanto, Noveri Dwi
Eksergi Vol. 17 No. 1 (2021): JANUARI 2021
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (747.999 KB) | DOI: 10.32497/eksergi.v17i1.2219

Abstract

Aerodynamics is a branch of science that discusses the movement of an object in the air. Aerodynamics comes from the words aero = air and dynamics = force of motion. The study of air forces is a branch of fluid mechanics. This study is a continuation of the study of hydrodynamics, where the science of the motion of air has a close relationship with other sciences. Physics, mathematics, mechanics, meteorology and others are branches of science that are closely related to aerodynamics. Where in the science of aerodynamics, it discusses the principle of stationary air, specifically about the changes experienced by the air when there is a change in geometry. In this study, CFD analysis was carried out to inspect and optimize the airflow through the energy-efficient car body "Ken dedes Evo 3" Malang State Polytechnic to participate in energy-efficient car competitions by following the regulations and packaging requirements in energy-efficient car contests. The aerodynamic analysis of the energy-efficient car was carried out using the ANSYS simulation software. This aerodynamic research aims to reduce the drag coefficient and lift coefficient of energy-efficient cars. In the end, the energy-efficient car Ken Dedes Electric Evo 3 has an improved drag coefficient of 0.03 and a lift coefficient of 0.034. This is obtained from the simulation only on the car body.
Analisis Penerapan Quality Function Deployment (QFD) sebagai Metode Pengembangan Produk Mesin Perajang Apel untuk Keripik Buah Kurniawan, Yuda Junaedi; Muzaki, Mochamad; Sari, Nurlia Pramita; Firmansyah, Hilmi Iman; Takwim, R.N. Akhsanu
Jurnal Rekayasa Mesin Vol. 19 No. 1 (2024): Volume 19, Nomor 1, April 2024
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v19i1.4670

Abstract

Perajangan merupakan proses paling penting dalam menentukan kualitas produk keripik buah apel yang akan dihasilkan. Sejalan dengan hal tersebut, hasil rajangan sangat bergantung pada kondisi alat perajang maupun keahlian dari penggunanya. Para produsen keripik buah apel di Desa Tulungrejo Kecamatan Bumiaji Kota Batu masih menggunakan alat perajang manual yang mempunyai beberapa kekurangan. Sehingga perlu adanya pengembangan untuk menghasilkan performa mesin perajang yang sesuai dengan kebutuhan produsen tersebut. Penelitian ini bertujuan untuk mengembangkan mesin perajang buah apel sesuai dengan Voice of Customer (VoC) atau kebutuhan dan keinginan produsen keripik buah apel. Metode pengembangan yang digunakan adalah Quality Function Deployment (QFD) dengan alat bantu representatif   berupa matriks House of Quality (HoQ). Di dalam HoQ, customer berharap mesin yang dikembangkan dapat menghasilkan tebal rajangan sesuai standar (3-5 mm) serta memiliki kemampuan yang lebih baik dari alat yang sudah ada disana. Dari hasil concept screening, terpilih konsep dengan kombinasi putaran rpm diatur menggunakan dimmer, ketebalan rajangan diatur dengan baut tekan, tuas pengarah menggunakan pegas tarik dan model mesin tipe horizontal. Mesin ini dirancang mempunyai dimensi minimalis yaitu sebesar 616 x 430 x 430 mm serta dengan komponen yang sederhana sesuai customer requirements pada HoQ. Kapasitas dari mesin ini sebesar 80 kg/jam dengan konsumsi daya listrik sebanyak 150 watt.
PELATIHAN PEMBUATAN SARANA BERMAIN ANAK DI RW 10 KECAMATAN PAKIS KABUPATEN MALANG Sari, Nurlia; Firmansyah, Hilmi Iman; Suwandhy , Nicky; Faizin, Akhmad; Dani, Agus; Jannah, Zahratul
Jurnal Pengabdian Kepada Masyarakat Bersinergi Inovatif Vol. 1 No. 2 (2024): Jurnal Pengabdian Kepada Masyarakat Bersinergi Inovatif
Publisher : PT. Gelora Cipta Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61674/jpkmbi.v1i2.161

Abstract

Lingkungan wilayah RW 10 Kec. Pakis, Kab. Malang merupakan lingkungan yang didalamnya terdapat banyak anak usia prasekolah dan sekolah dasar. Kurangnya sarana yang memadai bagi anak untuk bermain dengan aman dan nyaman di lingkungan setempat menjadi masalah pada lingkungan tersebut. Solusi ditawarkan pada pengabdian ini adalah memberikan sarana bermain anak di lingkungan RW Kecamatan pakis Kab. Malang. Kegiatan Pengabdian ini meliputi : Desain dan pembelian bahan baku, Pelatihan teori pengelasan, pelatihan praktek las, proses pembuatan, dan proses pemasangan. Kegiatan pengabdian ini berjalan dengan lancar.
Simulation of The Effect of Blank Geometry Toward The Mecanical Properties of Strains And Stress on Deep Drawing Process Using Material Aluminum 7075 Pratama, Adjie Yoga; Widyasari, Auzini; Fakhruddin, Muhammad; Muzaki, Mochamad; Firmansyah, Hilmi Iman
Journal of Evrímata: Engineering and Physics Vol. 01 No. 02, 2023
Publisher : PT. ELSHAD TECHNOLOGY INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70822/journalofevrmata.vi.27

Abstract

Using Aluminum 7075 at a high temperature of 50 degrees Celsius, this study examines the effect of various blank geometry angles on the mechanical properties of strain and stress during the deep drawing process. This study systematically examines the impact of different blank geometry angles on the deformation behavior, strain distribution, and stress concentration during the deep drawing process of Aluminum 7075 sheet using a numerical simulation approach. To describe the behavior of the material against the effect of the angle on the pressure in the simulation taking into account realistic parameters, the main point is the result of the pressure treatment of the predetermined angle on the results of the strains and stresses created. The obtained results, which include strain distribution, stress concentration, and overall mechanical reaction, provide important information for the choice of the best blank geometry angle in deep drawing of Aluminum 7075 at high temperatures. This research contributes to the advancement of process optimization in the metal forming industry, providing a solid foundation for improving efficiency and quality in deep drawing operations involving high-strength aluminum alloys.
Co-Authors Akbarsyah D, Khelvindra Rizky Akhmad Faizin Amrullah, Utsman Syah Andhika Angger Nugraha Anindito Purnowidodo Bayu Pranoto BAYU PRANOTO Bayu Pranoto Chandra Gunawan Chandra Gunawan Dani, Agus Elka Faizal Fauzan Baananto Hangga Wicaksono Hangga Wicaksono Hanif Arsalan Dani Subekti Hardyanto, Noveri Dwi Imam Mashudi Jannah, Zahratul Kurniawan, Yuda Junaedi Maskuri Maskuri Moh. Nasir Hariyanto Muhammad Fakhruddin Muhammad Galih Muhammad Trifiananto Mukhammad Fakhruddin Mustapa, Mohammad Sukri Muzaki, Mochamad Nike N.F Nurlia Pramita Sari Pratama, Adjie Yoga Pratama, Rico Wahyu R.N. Akhsanu Takwim, R.N. Akhsanu Rilis Eka Perkasa Sabina Aisyah Susanto Sari, Nurlia Sari, Nurlia Pramita Satworo Adiwidodo Setyabudi, Sofyan Arief Sulistyono Sulistyono Suwandhy , Nicky Syamsul Hadi Valeria, Sza Sya Monica Wicaksono, Hangga Widyasari, Auzini Wirawan Wirawan Wirawan