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All Journal Jurnal Rekayasa Mesin Surya Abdimas JURNAL CRANKSHAFT Community Development Journal: Jurnal Pengabdian Masyarakat Jurnal Abdi Masyarakat Indonesia Jurnal Ilmiah Teknik Mesin, Elektro dan Komputer (JURITEK) Jurnal Hilirisasi Technology kepada Masyarakat (SITECHMAS) Journal of Mechanical Engineering and Applied Technology Jurnal Polimesin
Wahyu Isti Nugroho
Politeknik Negeri Semarang
Humanities Automotive Engineering Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Other

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Journal : Journal of Mechanical Engineering and Applied Technology

 1 
Rancang Bangun Mesin Pengurai Gumpalan Tepung Tapioka Dengan Penggerak Motor Listrik 1 HP Abdul Syukur Alfauzi; Wahyu Isti Nugroho; Mudjijanto Mudjijanto; Zaenal Abidin; Fredy Norfitayana
Journal of Mechanical Engineering and Applied Technology Vol 1, No 2 (2023): Volume 1 Issue 2 Year 2023 (July 2023)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jmeat.v1i2.4876

Abstract

Almost all tapioca flour manufacturers at the home S.M.E. level, particularly in the Sidomukti district of Pati, Central Java, manufacture tapioca flour only to the final stage as a lump of tapioca flour. The results of this S.M.E. cannot be directly marketed to consumers because it must go through a process again so that the flour is smooth, so S.M.E. will sell tapioca flour lumps in the factory to be processed into ready flour to be marketed, resulting in lower profits for S.M.E.s producing tapioca flour and because there is no machine to decompose tapioca flour clumps for household production scale. Machine for breaking lumps of tapioca flour, this 1-horsepower electric motor drive is designed to alleviate challenges in S.M.E.s. This machine has a 50kg/h capacity and uses a 1:5 rotation ratio transmission mechanism via pulleys and a belt. When the electric motor is turned on, pulley one on the motor will rotate and move pulley two on the shaft, which then drives the mixer (stirrer), which will break down the flour that is put through the hopper and immediately filtered by mess, which has a hole size of 0.5 mm, and flour will come out through the output hopper that is under the body. This machine is semi-automatically operated by pushing ON to turn on and OFF to turn off. This machine will perform as intended
Rancang Bangun dan Analisis Shutter Conveyor Reversible Semi–Otomatis Berbasis PLC Guna Mengurangi Waktu Proses Material Handling Pada Line Assembly Steering Tipe D74 di PT. Akashi Wahana Indonesia Supandi Supandi; Wahyu Isti Nugroho; Iswanocta Candra Yudhistira
Journal of Mechanical Engineering and Applied Technology Vol 1, No 1 (2023): Volume 1 Issue 1 Year 2023 (March 2023)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jmeat.v1i1.4771

Abstract

PT Akashi Wahana Indonesia is an automotive manufacturer that specializes in producing steering gear assemblies. The steering gear assembly process involves assembling the components of the steering gear into a single unit. A problem related to cycle time has been identified at a process position on the D74 steering gear assembly line. The cause of this issue is the manual shutter used to transfer assembly results between process positions, which requires manual intervention by operators, resulting in non-value-added time and unnecessary movement. The proposed solution to this problem is to design and development a PLC based semi-automatic reversible shutter conveyor. This shutter conveyor will serve as a material handling tool to change the transfer system between process positions. Operators can initiate the transfer to the next position by simply pressing the start button. The research methodology encompasses problem identification, literature review, design, production, and testing. The analysis includes calculations of stress and strain on the base slider, and percentage comparisons of material handling process time before and after improvement. Testing will be conducted through experiments on material handling process time. The result of this research is the implementation of a PLC-based semi-automatic reversible shutter conveyor in the D74 steering assembly line, which has achieved a 69.1% reduction in material handling process time.
MODIFIKASI MESIN ROLL BENDING PLAT MENGGUNAKAN MOTOR LISTRIK GUNA MENINGKATKAN KUALITAS PRODUK DAN EFISIENSI KERJA DI DIVISI STEEL CENTER PT NAYATI INDONESIA Riles Melvy Wattimena; Wahyu Isti Nugroho; Dita Anis Munawaroh; Ilham Martianto
Journal of Mechanical Engineering and Applied Technology Vol 1, No 3 (2023): Volume 1 Issue 3 Year 2023 (November 2023)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jmeat.v1i3.4921

Abstract

PT Nayati Indonesia merupakan perusahaan manufaktur dan perdagangan dibidang stainless steel yang menjual produk food service equipment. Tujuan penelitian adalah untuk menurunkan waktu proses, menurunkan produk NG, dan meningkatkan kenyamanan pada postur tubuh pekerja. Latar belakang dalam penelitian adalah pada proses roll bending masih menggunakan tenaga manusia untuk memutar spindle dalam pengerollannya, sehingga menyebabkan hasil radius atau benda kerja yang dirol memiliki ukuran yang tidak beraturan, waktu proses menjadi relatif lama sehingga masih kurang efektif dan efisien. Metode penelitian menggunakan Root Cause Analysis dan Sighley,s. Pengujian dilakukan menggunakan 3 parameter jenis plat dengan tebal 0,5 mm, 0,8 mm, dan 2 mm. Hasil penelitian mesin roll bending plat setelah dilakukan improvement memiliki penurunan waktu proses sebesar 54,54% untuk tebal plat 0,5 mm, 51,91 % untuk tebal plat 0,8 mm, serta 40,8 % untuk tebal plat 2 mm, menurunkan produk NG 46,73 % untuk tebal plat 0,5 mm, 23,37 % untuk tebal plat 0,8 mm, dan 6,67 % untuk tebal 2 mm, serta peningkatan terhadap kenyamanan pada postur tubuh pekerja sebesar 75% dari analisis menggunakan metode Rapid Entire Body Assestment.Kata kunci : Hasil Radius, Mesin Roll Bending Plat, Produk NG, Waktu Proses.
RANCANG BANGUN WELDING FIXTURE PADA PROSES PENGELASAN PRODUK INNER JOINT UNTUK MENGURANGI PRODUK NG (NOT GOOD) DAN MENURUNKAN WAKTU PROSES PRODUKSI DI PT YOGYA PRESISI TEHNIKATAMA INDUSTRI Manggala, Taruna; Nugroho, Wahyu Isti; Khoryanton, Ampala
Journal of Mechanical Engineering and Applied Technology Vol 2, No 2 (2024): VOLUME 2 ISSUE 2 YEAR 2024 (JULY 2024)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jmeat.v2i2.5737

Abstract

The background and problems in this research are the welding process of inner joint products at PT Yogya Presisi Tehnikatama Industri where there are not good (NG) products and the welding process time can be shortned if there is a support tool for operator. The purpose of this study is to prevent NG products from inner joints and reduce the production process time of inner joints. The method used in this study is to use a flow diagram for design. The first stage is to identify the problem with the 5M + 1E collected factor followed by conducting field studies, staff interviews, and literature studies. The second stage is to design the welding fixture inner joint using Solidworks 2019 software with dimensions of 165 mm in length, 301 mm in width, and 262.42 mm in height composed of 19 single components made of ASTM A36 steel and a standart part. The third stage is the process of making welding fixtures which includes material procurement to the CNC milling, CNC lathe, and plate bending processes followed by fixture assembly. The test results showed a decrease in NG products by 22.58% and a decrease in welding process time by 30.93%.
Co-Authors Abdul Syukur A Fauzi Abdul Syukur Alfauzi Abdul Syukur Alfauzy Adhy Purnomo Agung N Agus Slamet Agus Suwondo Ahmad Cholis Ahmad Jalaludin Alfauzi, Abdul Syukur Amarta, Rona Zaqqi An Nizhami, Avicenna Andreyanto W, Mirda Anggit, Timotius Ardjo, Anwar Sukito Aryo Satito Atikah Ayu Janitra Ayu S, Friska Balqis Balqis Bambang Tjahjono Bayu Setyo Nugroho Bayu Setyo Nugroho Bayu Setyo Nugroho, Bayu Setyo Dita Anis Munawaroh Eko Saputra Eko Saputra Farhan, Muchamad Farika Tono Putri Fathoni, Achmad Luthfian Fredy Norfitayana Friska Ayu Fitrianti Sugiono Fuad Hilmy Hardian, Rudino Tuqo Hartono Hartono Hartono Hartono Hery Tristijanto Huda, Evan Hardi Nurul Huda, Mohammad Ragil Nur Ilham Martianto Indrawati, Ragil Tri Iswanocta Candra Yudhistira Kadavi, Fadhil Karuana, Muhammad Rienaldy Khoryanton, Ampala Manggala, Taruna Mochammad Muqorrobin, Mochammad Mudjijanto Mudjijanto Nanang Apriandi Nugroho , Bayu Setyo Nurhidayati Nurhidayati Padang Yanuar Panji Setya Laksono Pratama, Galang Dimas Putri, Farika Tono R., Rizkha Ajeng Ragil Tri Indrawati Ragil Tri Indrawati Ragil Tri Indrawati Riles Melvy Wattimena Rizka Ajeng Rohmatika Rizkha Ajeng Rochmatika Rizkha Ajeng Rochmatika Safirana, Eni Safriana, Eni Sai'in, Ali Saputro, Febrianto Suryo Satito, Aryo Slamet Priyoatmojo Slamet Priyoatmojo, Slamet Solly Aryza Sri Hastuti Sriharmanto, Sriharmanto Suharto Suharto Supandi Supandi Supandi Timotius Anggit Kristiawan Tristidjanto, Hery Xander Salahudin Yusuf Dewantoro Herlambang Zaenal Abidin Zaenal Abidin