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All Journal Transmisi Info-Teknik Jurnal Elemen Logic : Jurnal Rancang Bangun dan Teknologi Jurnal Energi dan Teknologi Manufaktur Journal of Applied Engineering and Technological Science (JAETS) Jurnal Pengabdian Polinema Kepada Masyarakat Jurnal Teknologi Jurnal Ilmiah Fakultas Sains dan Teknik Universitas Nusa Cendana Logic : Jurnal Rancang Bangun Dan Teknologi Jurnal Teknik Ilmu dan Aplikasi
Syamsul Hadi
Politeknik Negeri Malang
Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Finite Element Analysis and Fabrication of Voronoi Perforated Wrist Hand Orthosis Based on Reverse Engineering Modelling Method Zakki Fuadi Emzain; Nanang Qosim; AM. Mufarrih; Syamsul Hadi
Journal of Applied Engineering and Technological Science (JAETS) Vol. 4 No. 1 (2022): Journal of Applied Engineering and Technological Science (JAETS)
Publisher : Yayasan Riset dan Pengembangan Intelektual (YRPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37385/jaets.v4i1.1199

Abstract

Other than surgery, post-stroke spasticity, fractures due to accidents, sports injuries, and musculoskeletal disorders due to office work on the wrist can be treated using a wrist-hand orthosis. The customized conventional methods usually have some drawbacks, which are more expensive, take a long time to manufacture, and require expert skills from medical therapists. The presence of reverse engineering (RE) technology can be applied in the medical field, such as the manufacture of prosthetic or orthosis devices. This study aims to develop a reverse engineering-based wrist-hand orthosis design, analyze it using the finite element method, and fabricate it. Research methods included 3D scanning, CAD modelling, model analysis, 3D printing, and postprocessing. The model material used was PLA with variations in the thickness of 5 mm, 5.5 mm, and 6 mm, and the load values range from 0 N to 30 N. The results of the equivalent stress analysis showed that the 5 mm thickness model could withstand a load of 30 N with a maximum equivalent stress of 23.46 MPa. With a safety factor value of 2.56, it was still relatively safe, and a critical area was at the back end of the model's palm between the thumb and index finger. The equivalent elastic strain and deformation results also had the same graphic trend with the maximum values for the same model, which were 0.0076 mm and 0.614 mm, respectively. The 3D printing FDM result showed that the Voronoi perforated wrist-hand orthosis prototype was sturdy, fit, and comfortable. It is expected to hold muscle tone and immobilize for hand rehabilitation.
ANALISIS PERENCANAAN TATA LETAK DEPARTEMEN PRODUKSI FREESTYLE SCOOTER DENGAN DEMAND 100 UNIT PER HARI Nurchajat; Haris Puspito Buwono; Syamsul Hadi
Jurnal Teknik Ilmu dan Aplikasi Vol. 3 No. 2 (2022): Jurnal Teknik Ilmu dan Aplikasi
Publisher : Politeknik Negeri Malang

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Abstract

Dalam sistem input output, mesin adalah salah satu faktor input yang harus ada selain manusia, material, keuangan, metode, dan lingkungan yang berinteraksi satu sama lain secara kompak dalam rangka melaksanakan proses transformasi material (bahan baku) menjadi produk sebagaimana direncanakan untuk dapat memenuhi kebutuhan stake holder. Kebutuhan stake holder tersebut tidak hanya sebatas masalah kualitas produk yang dihasilkan tetapi juga masalah seberapa besar kuantitas produk yang diperlukan. Kualitas dan kuantitas produk sangat tergantung kepada jenis dan berapa jumlah mesin yang diperlukan terkait dengan demand. Permasalahannya adalah bagaimana menata mesin-mesin produksi yang bermacam-macam tersebut dalam suatu departemen produksi sehingga diperoleh suatu urutan penataan mesin dengan beban dan jarak minimal dalam pembuatan freestyle scooter dengan demand 100 unit perhari. Solusi dari permasalahan tersebut adalah melalui tahapan-tahapan secara sistematis logis sehingga diperoleh gambar kerja freestyle scooter, tahapan proses dari setiap operasi pemesinan, output standar, kebutuhan bahan baku, jumlah mesin, dan tata letak departemen produksi berdasarkan analisis momen beban kali jarak. Hasil dari penelitian ini adalah gambar Tata letak pabrik Departemen Produksi Freestyle Scooter Dengan Demand 100 Unit Per Hari.
Fatigue Test of Plastics and Manufacturing Collet Nut Driver for Integrated Rotating Bending Fatigue Test Machine Tri Setyo Aji Cahyono; Syamsul Hadi; Rico Wahyu Pratama; Zakiyah Amalia; Fica Aida Nadhifatul Aini; Aini Zuhra Binti Abdul Kadir
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 24 No. 3 (2024): November
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31940/logic.v24i3.110-116

Abstract

The unknown fatigue life of injection molded plastic materials and the ineffectiveness of clamping both ends of the specimen in the collet of the Integrated Rotary Bending Fatigue Testing Machine with manual tightening and loosening are the obstacles faced. The purpose of testing and making a collet nut driver is to obtain a prediction of the fatigue life of injection molded plastic materials and to increase the effectiveness of clamping the end of the specimen with the help of a DC motor drive. The research method uses experiments which include injection molding of plastic materials of the type Polypropylene (PP) and Acrylonitrile Butadiene Styrene (ABS), checking the straightness and surface finishing of the specimen, fatigue testing at 1800, 2000, 2200 rpm, analysis of fatigue test results, and design-manufacturing collet nut drive with DC motor drive and transmission of a pair of spiral cone gears, manufacture of DC motor sliding movement mechanism along the reach of both ends of the specimen, installation of electric power circuits for direction and electric current switches for clockwise and counterclockwise rotation functions, and analysis of the results of the fatigue test and performance of the collet nut driver The results of fatigue testing at a bending stress (S) of 68 MPa for PP material show that at 1800 rpm, the fatigue life (N) was obtained at 2,014,605 cycles and at 2200 rpm, N was obtained at 1,506,486 cycles. Meanwhile, for ABS specimens, at 1800 rpm, N was obtained at 1,547,106 cycles and at 2200 rpm, N was obtained at 1,190,425 cycles, which means PP material has a longer fatigue life compared to ABS. The test results of the DC motor drive on the collet nut showed that the duration of tightening/loosening was 4.4 times faster than manually, which originally had a duration of 66 seconds, down to just 15 seconds for the DC motor drive.
Analysis of Leakage Test Results on Flange-Gasket Piping System Simulator Device Syamsul Hadi; Muhammad Naufal Abiyyi Hutagalung; Bayu Pranoto; Firman Dwiyanto; Dadang Kurniawan
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 25 No. 1 (2025): March
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31940/logic.v25i1.27-34

Abstract

Fluid leaks in piping installations often occur in the industrial sector which is detrimental due to the selection of gasket materials, flanges, and improper tightening torque of flange bolts. The fluids that are flowed can be clean water, palm oil with a fatty acid content at an acidity level (pH) of around 4, oil, solutions with a certain pH or fuel. The purpose of the simulator device analysis is to obtain data on the level of tightening torque of bolts-nuts on 1 inch pipe flanges-gaskets and the volume of leakage. The analysis method includes setting the working pressure of the fluid on the globe valve at 1 Bar, 1.3 Bar, and 1.5 Bar on the flange-gasket piping system simulator device, measuring the lowest tightening torque at which the fluid starts to leak to the highest at a condition where there is no leak at all, and two-way Anova analysis on the distribution data. The results of the study showed that the lowest bolt-nut tightening torque at 2 Nm for three M8 bolts-nuts as flange-gasket pair locks resulted in an average fluid droplet leakage of 120 ml/hour and at a torque of 4 Nm the leakage level was about a quarter of that, namely 36 ml/hour and finally at a torque of 5 Nm there was no leakage at all. Implications in industries that use fluid flow with sufficient tightening torque of nuts-bolts on flanges-gaskets can reduce-stop losses due to leakage that occurs in their piping systems.
Co-Authors Agus Dani Ahmad Hailala Nur Aziz Ahmad Hanif Firdaus Aini Zuhra Binti Abdul Kadir Akhlis Rizza, Muhammad Alfarizi Al Azis AM Mufarrih Amrullah, Utsman Syah Andri Setiawan Bambang Irawan BAYU PRANOTO Dadang Kurniawan Eko Yudiyanto Etik Puspitasari Fica Aida Nadhifatul Aini Firman Dwiyanto Gumono Hangga Wicaksono Hari Rarindo Haris Puspito Buwono Lisa Agustriana Maskuri Maskuri Mochammad Muzaki Muhammad Mahdi Muhammad Naufal Abiyyi Hutagalung Nanang Qosim Nugroho, Pipit Wahyu Nurchajat Pondi Udianto R.N. Akhsanu Takwin Rico Wahyu Pratama Santoso Sarjiyana Subagiyo Subagiyo Sudarmadji Tri Setyo Aji Cahyono Vinan Viyus Wirawan Zakiyah Amalia Zakki Fuadi Emzain