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All Journal Jurnal Optimasi Sistem Industri REKAYASA Turbo : Jurnal Program Studi Teknik Mesin JTERA (Jurnal Teknologi Rekayasa) Conference on Innovation and Application of Science and Technology (CIASTECH) Jurnal Teknik Mesin Indonesia Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Scientific Journal of Mechanical Engineering Kinematika Journal of Applied Sciences and Advanced Technology Jurnal Serambi Abdimas Jurnal Ilmiah Teknik Mesin Poros Jurnal Teknik Mesin Mechanical Xplore Dulang: Jurnal Pengabdian Kepada Masyarakat Engineering and Technology International Journal (EATIJ) Jurnal Ilmiah Teknik dan Sains (JITS) Joong-Ki Joong-Ki
Dodi Mulyadi
Universitas Buana Perjuangan Karawang
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Parametric Analysis and Optimization of Sinker-EDM Process for High Tensile Strength Steel Using Response Surface Methodology Rohman; Sukarman, Sukarman; Khoirudin, Khoirudin; Taufik Ulhakim, Muhamad; Mulyadi, Dodi; Amir, Amir; Abdulah, Amri
Jurnal Teknik Mesin Mechanical Xplore Vol 5 No 2 (2024): Jurnal Teknik Mesin Mechanical Xplore (JTMMX)
Publisher : Mechanical Engineering Department Universitas Buana Perjuangan Karawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36805/jtmmx.v5i2.9017

Abstract

This investigation focuses on optimizing the sinker electrical discharge machining (sinker-EDM) process parameters for high tensile strength steel (HTSS), specifically SKD-11, utilizing Box-Behnken Response Surface Methodology (BB-RSM). Sinker-EDM is a commonly used technique in manufacturing moulds, dies, and components for sectors like automotive and aerospace. This process eliminates direct contact between the electrode and the workpiece. However, its low material removal rate (MRR) constrains productivity. This research endeavours to enhance MRR by employing rectangular graphite electrodes. The Box-Behnken Response Surface Methodology (BB-RSM) was utilized to evaluate the effects of pulse current, spark-on time, and gap voltage on MRR. The optimal MRR of 45.49 mm³/min was attained at a pulse current of 16 A, spark-on time of 400 µs, and gap voltage of 45 V. ANOVA revealed that pulse current and spark-on time significantly influenced MRR. In contrast, gap voltage had an insignificant impact. Interaction and surface plot analyses confirmed that high pulse current and extended spark-on time resulted in the maximum MRR. These findings provide valuable insights for optimizing the sinker-EDM process for SHTSS, contributing to enhanced productivity and efficiency in manufacturing.
Pengembangan Kapasitas Produksi melalui Pengabdian kepada Masyarakat: Pendampingan Proses Stamping di UMKM Karawang Jawa Barat Sukarman, Sukarman; Ulhakim, Mumamad Taufik; Mulyadi, Dodi; Khoirudin, Khoirudin; Amir, Amir; Rahdiana, Nana; Suhara, Ade; Hakim, Afif
Jurnal Serambi Abdimas Vol 6 No 01 (2025): Jurnal Serambi Abdimas
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/sa.v6i01.14855

Abstract

Proyek pengabdian kepada masyarakat ini bertujuan mengatasi tantangan efisiensi produksi di sektor industri kecil dan menengah dengan mengeksplorasi transisi dari penggunaan CNC ke proses blanking. Fokus utama inisiatif ini adalah meningkatkan efektivitas biaya dan waktu produksi melalui penerapan teknologi blanking yang lebih efisien. Metodologi yang digunakan adalah Participatory Action Research (PAR), yang mengedepankan kolaborasi sinergis antara tim Universitas Buana Perjuangan (UBP) Karawang dan tim PT Gama Satya Engineering. Tahapan kegiatan meliputi identifikasi masalah, pengembangan solusi, hingga implementasi perubahan yang diperlukan di lapangan. Hasil menunjukkan bahwa penerapan proses blanking dengan mesin 40-ton berhasil menekan biaya produksi per komponen menjadi Rp 2.061,14, menghasilkan penghematan hingga 95,71% dibandingkan dengan proses CNC. Sementara itu, penggunaan mesin 80-ton mencatatkan biaya produksi sebesar Rp 2.200,03 per komponen dengan tingkat efisiensi 95,42%. Dari sisi waktu, proses blanking hanya memerlukan 0,0139 jam (sekitar 0,834 menit) per komponen, jauh lebih cepat dibandingkan proses CNC yang memakan waktu hingga 12 menit per unit. Temuan ini tidak hanya menunjukkan potensi signifikan dalam penghematan biaya dan waktu, tetapi juga memperkuat hubungan antara akademisi dan industri. Selain itu, hasil penelitian ini memberikan panduan praktis yang dapat diterapkan secara berkelanjutan di sektor industri kecil dan menengah, sekaligus memberikan dampak positif bagi mitra industri.
Enhancement Material Removal Rate Optimization of Sinker EDM Process Parameters Using a Rectangular Graphite Electrode Sukarman; Sumanto; Acim Maulana; Dodi Mulyadi; Khoirudin; Siswanto; Ade Suhara; Safril
Jurnal Optimasi Sistem Industri Vol. 21 No. 2 (2022): Published in October 2022
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/josi.v21.n2.p87-96.2022

Abstract

This article discusses the optimization of sinker electrical discharge machining (sinker EDM) processes using SPHC material that has been hardened. The sinker EDM method is widely employed, for example, in the production of moulds, dies, and automotive and aeronautical components. There is neither contact nor a cutting force between the electrode and the work material in sinker EDM. The disadvantage of the sinker EDM is its low material removal rate. This work aims to optimize the material removal rate (MRR) using graphene electrodes in a rectangular configuration. The SPHC material was selected to determine the optimum MRR model of the sinker EDM input parameter. The Taguchi experimental design was chosen. The Taguchi technique used three input parameters and three experimental levels. Pulse current (I), spark on time (Ton), and gap voltage were among the input parameters (Vg). The graphite rectangle was chosen as an electrode material. The input parameter effect was evaluated by S/N ratio analysis. The result showed that pulse current has the most significant impact on material removal rate in the initial study, followed by spark on time and gap voltage. All input parameters are directly proportional to the MRR. For optimal material removal rate, the third level of pulse current, spark on time, and gap voltage must be maintained. In addition, the proposed Taguchi optimization model could be applied to an existing workshop floor as a simple and practical electronic tool for predicting wear and future research.
OPTIMASI PARAMETER MESIN ULTRASONIC WELDING UNTUK PENYAMBUNGAN MATERIAL TERMOPLASTIK Dodi Mulyadi; Sukarman Sukarman; Amir Amir; Bella Sofiyanti; Azis Adhi Nugroho
Scientific Journal of Mechanical Engineering Kinematika Vol 9 No 1 (2024): SJME Kinematika Juni 2024
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v9i1.296

Abstract

Ultrasonic welding is the joining of materials using of heat generated from high frequency mechanical movements. Known as an efficient process in many applications, such as in textile, packaging and automotive industries. One of the materials that can be joined using ultrasonic welding is thermoplastic material because there is no polymer degradation found in the product after the welding process. In most practices, parameters determining for ultrasonic welding machines uses a trial and error method, several parameters are determined to vary, such as welding pressure, welding time, holding time, drop speed and trigger pressure. To determine the correct variation of values, the Taguchi method is the right choice, determining the variable matrix is ​​very easy, commonly used, and many studies have proven that the Taguchi method is reliable. In this research, the product to be studied is a medical device, which uses thermoplastic polymer as its material. This research has produced the best variable variation of ultrasonic welding machine parameters: welding pressure of 20.00 psi; welding time of 0.21 seconds; holding time of 0.16 seconds; horn descent speed of 3.00 seconds; and trigger pressure of 4.00 psi. The defective products on appearance had reduced to 0.07% from the previous 1.08%.
The Effect of V-Bending Parameters Utilizing Electrolytic Zinc-Coated Steel Sheet (SECC) Material: Pengaruh Variasi V-Dies Bending Angle pada Material Electrolytic zinc-coated Steel Sheet (SECC) Dodi Mulyadi; Khoirudin; Sukarman; Mohamad Rizkiyanto; Nana Rahdiana; Ade Suhara; Ahmad Fauzi; Sumanto
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 5 Nomor 1 Tahun 2023
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v5i1.3937

Abstract

This study discusses the phenomenon of spring-back and spring-go in the bending kinematic forming using V-bending dies process and Electrolytic zinc-coated steel sheet (SECC/JIS G 3313) material. The zinc layer on the galvanized steel surface should not be damaged during the material forming process. The zinc layer on the galvanized steel sheet will affect the metal forming process. This study uses an experimental design with four input parameters, namely v-die opening L (mm), punch angle (degree), punch speed (mm/minutes), and bending force (kN). The smallest spring-back was obtained in the 4th test sample: the v-die opening of 35 mm, the punch angle of 40o, the punch speed of 30 mm/minute, and the bending force of 7.50 kN. The minor spring-back degree was 1.67o. Meanwhile, the smallest spring-go obtained in the second sample, namely the v-die opening of 30 mm, the punch angle of 50o, the punch speed of 40 mm/minute, and the bending force of 7.00 kN, the minor spring-go degree of 0.92o was obtained. These results show that the best spring-back degree for SECC/JIS G 3313 material is obtained when the bending process is performed with the v-die bending parameter of 30 mm, punch angle of 50o, punch speed of 40 mm/minute, and bending force of 7.00 kN.
Optimization of Bicycle Frame Design With Variation of Materials Amir; Muchammad Chusnan Aprianto; Sukarman; Dodi Mulyadi; Muhammad Rahmantio Septiana
TURBO [Tulisan Riset Berbasis Online] Vol 15 No 1 (2026): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v15i1.4532

Abstract

This study shows how to model the best results of several bicycle frame designs with a variety of materials. The use of various materials to change the design of a bicycle frame is the main topic of this research. Materials such as aluminum, titanium and carbon steel have specific features that can affect the strength, weight and response of a bicycle frame. This research involves designing a bicycle frame design using SolidWorks 2022, which is then used for simulation and strength analysis with Ansys. In this experiment, various materials were used, including aluminum alloy, titanium and carbon steel to measure the stress and deformation of each design and material tested. The purpose of this research is to study how the use of different types of materials when changing the design of a bicycle frame impacts the performance and strength of the bicycle. Tests were conducted through ansys simulation, with dynamic loads under conditions of daily bicycle use. The best data obtained in design 1 on titanium material, the top-tube section experienced a stress of 18.156 MPa and a deformation of 0.012078 mm. For aluminum material, the head-tube section experienced the lowest stress of 1.211 MPa and deformation of 0.0034886 mm. These results provide important insights for developing more efficient bicycle frame designs that can be tailored to user requirements and also impact the development of new materials in the bicycle industry aimed at improving the performance and durability of bicycle frames.
Rancang Bangun Dan Uji Kinerja Mesin Pencacah Kulit Kacang Tanah Kapasitas 15 Kg/Jam Dodi Mulyadi
JTERA (Jurnal Teknologi Rekayasa) Vol 11 No 1: Vol. 11 No. 1: Juni 2026
Publisher : Politeknik Sukabumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31544/jtera.v11.i1.2026.181-188

Abstract

Kulit kacang tanah merupakan salah satu limbah pertanian utama yang dihasilkan dari proses pengolahan kacang tanah di Indonesia dan hingga saat ini masih belum dimanfaatkan secara optimal, meskipun memiliki potensi sebagai bahan pakan ternak. Penelitian ini bertujuan untuk merancang, memproduksi, dan mengevaluasi kinerja mesin pencacah kulit kacang tanah dengan kapasitas rancang sebesar 15 kg/jam. Mesin ini dikembangkan menggunakan pendekatan perancangan teknik secara sistematis yang dikemukakan oleh Pahl dan Beitz, serta didukung oleh analisis morfologi untuk memilih konsep desain yang optimal. Mekanisme pencacahan digerakkan oleh motor listrik AC tiga fasa berdaya 0,75 hp dengan sistem transmisi puli dan sabuk-V. Pengujian kinerja dilakukan pada putaran poros sebesar 1191 rpm dengan menggunakan empat buah pisau pencacah, serta variasi jarak pisau sebesar 20 mm, 10 mm, dan 5 mm. Hasil penelitian menunjukkan bahwa jarak pisau berpengaruh signifikan terhadap kinerja pencacahan. Kapasitas pencacahan tertinggi, yaitu sebesar 21,46 kg/jam dengan ukuran partikel target 3 mm, diperoleh pada jarak pisau 20 mm. Hasil ini menunjukkan bahwa mesin yang dirancang telah memenuhi tujuan perancangan dan layak diterapkan pada aplikasi skala kecil untuk meningkatkan pemanfaatan limbah kulit kacang tanah sebagai pakan ternak.
Pelatihan dan Pendampingan Proses Deep Drawing sebagai Upaya Pengembangan Produk Rumah Tangga Berbasis Logam Dodi Mulyadi; Khoirudin Khoirudin; Amir Amir; Nanda Rizki Aulia; Supriyanto Agus; Karyadi Karyadi
Joong-Ki : Jurnal Pengabdian Masyarakat Vol. 5 No. 2: Februari 2026
Publisher : CV. Ulil Albab Corp

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56799/joongki.v5i2.13140

Abstract

Kegiatan pengabdian kepada masyarakat ini dilaksanakan di PT. Gama Satya Engineering (GSE), Karawang, dengan tujuan meningkatkan kemampuan teknis pekerja dalam memahami dan menerapkan proses deep drawing sebagai teknologi dasar dalam pembuatan peralatan rumah tangga berbasis logam. Perusahaan selama ini berfokus pada jasa manufaktur berbasis pesanan (customize product), sehingga belum memiliki produk unggulan yang dapat dipasarkan secara langsung kepada masyarakat. Metode pelaksanaan kegiatan meliputi pelatihan teori, demonstrasi proses deep drawing, pendampingan teknis perencanaan produksi, serta evaluasi peningkatan kompetensi peserta. Hasil kegiatan menunjukkan peningkatan signifikan terhadap pemahaman dan keterampilan peserta, dengan rata-rata peningkatan nilai uji sebesar 45%. Selain itu, mitra juga mulai mampu merencanakan pengembangan produk awal berupa baskom logam sebagai prototype. Kegiatan ini diharapkan dapat menjadi langkah awal bagi GSE untuk mengembangkan produk baru yang bernilai komersial, sekaligus memperkuat kolaborasi antara perguruan tinggi dan dunia industri.
Fabrikasi DSSC Berbasis TiO2/SiO2-Karbon Aktif Melalui Screen Printing dengan Sensitizer Bit Merah: Analisis Efisiensi pada Berbagai Intensitas Cahaya Randy Ahmad Fauzan; Agus Supriyanto; Ade Suhara; Khoirudin Khoirudin; Amir Amir; Dodi Mulyadi; Karina Chintya Lestari; Nafisa Rizki Maulida; Muhamad Taufik Ulhakim
Jurnal Ilmiah Teknik dan Sains Vol. 4 No. 1 (2026): Agustus: Jurnal Ilmiah Teknik dan Sains (JITS)
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat AKIPBA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62278/jits.v4i1.130

Abstract

Penelitian ini bertujuan untuk memfabrikasi Dye-Sensitized Solar Cell (DSSC) berbasis fotoanoda komposit TiO₂/SiO₂-karbon aktif menggunakan metode screen printing dan ekstrak buah bit merah (Beta vulgaris) sebagai fotosensitizer alami, serta menganalisis pengaruh variasi intensitas cahaya terhadap efisiensi konversi energi. Fotoanoda dikarakterisasi menggunakan XRD, SEM, EDX, dan UV-Vis. Karakterisasi menunjukkan bahwa komposit memiliki struktur kristalin yang baik, morfologi permukaan berpori, serta komposisi unsur yang sesuai. Analisis UV-Vis memperlihatkan puncak serapan maksimum pada panjang gelombang 530 nm dan perkiraan energi celah optik sebesar 2,34 eV. Pengujian fotovoltaik dilakukan menggunakan lampu LED berdaya 8, 10, dan 12 W. Pengujian menunjukkan bahwa intensitas cahaya yang lebih besar memperbaiki parameter kinerja DSSC. Performa optimum diperoleh pada daya 12 W, ditandai oleh nilai Voc sebesar 0,71 V, Jsc sebesar 0,131 mA/cm², FF sebesar 45,1%, dan efisiensi konversi energi sebesar 0,053%. Secara keseluruhan, komposit TiO₂/SiO₂-karbon aktif dan fotosensitizer ekstrak buah bit merah berpotensi digunakan sebagai material ramah lingkungan dalam pengembangan DSSC berbiaya rendah.
Co-Authors Abduh Al Afghani Acim Maulana Ade Suhara Afif Hakim Agung Gumelar Agus Suprihanto Agus Supriyanto Ahmad Fauzi Ahmad Hidayat Amir Amir Amir Amir Amir Amir Amir Amir Amri Abdulah Anwar Ilmar Ramadhan Arif Wibowo, Ludvi Aulia Nanda, Rizki Azis Adhi Nugroho Bella Sofiyanti Budhi M Suyitno Budiansyah, Ade Cepi Cepi Budiansyah, Ade Fathan Mubina Dewadi Fazin, Nazar Hananto, Agustia Irfani, Tomas Istianto Budhi Rahardja Karina Chintya Lestari Karyadi Karyadi Karyadi Karyadi Karyadi Khoirudin Khoirudin Khoirudin Khoirudin Khoirudin Khoirudin Khoirudin Khoirudin Khoirudin Khoirudin Khoirudin, Khoirudin Kumbarasari, Shanti Luay Raihan Dhawy Miftahudin, Moh Mohamad Rizkiyanto Muchammad Chusnan Aprianto Muhamad Taufik Ulhakim Muhammad Rahmantio Septiana Murtalim Murtalim Murtalim, Murtalim Nafisa Rizki Maulida Nana Rahdiana Nanda Rizki Aulia Nanda, Rizki Aulia Patya, Dhea Intan Pratama, Tito Chaerul Putra Adjie Suwignyo Rahdiana, Nana Rahmadi Kusumastuti Randy Ahmad Fauzan Rizki Aulia Nanda Rohman Safril Safril Safril Safril Salman Fahrizal Gymanstiar Shieddieque, Apang Djafar Siswanto Siswanto Siswanto Suhara, Ade Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sumanto Sumanto Sumanto Sunandar, Aris Abdul Supriyanto Agus Susanto Sudiro Taufik Ulhakim, Muhamad Taufiqur Rokhman, Taufiqur Tikamori, Ghazi Tito Chaerul Pratama Ulhakim, Mumamad Taufik