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All Journal IPTEK The Journal of Engineering Jurnal Teknik Mesin FLYWHEEL : Jurnal Teknik Mesin Untirta Jurnal Rekayasa Mesin Jurnal Teknik Mesin Indonesia Infotekmesin Prosiding Seminar Nasional Multidisiplin Abdi Dosen : Jurnal Pengabdian Pada Masyarakat Journal of Applied Engineering and Technological Science (JAETS) MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Jurnal Pendidikan Teknik Mesin Undiksha Community Development Journal: Jurnal Pengabdian Masyarakat JURPIKAT (Jurnal Pengabdian Kepada Masyarakat) Jurnal Mesin Nusantara Panrannuangku Jurnal Pengabdian Masyarakat International Conference on Industrial Revolution for Polytechnic Education Jurnal Teknik Mesin Jurnal Pengabdian Multidisiplin Jurnal Hilirisasi Technology kepada Masyarakat (SITECHMAS) Prosiding SEMNAS INOTEK (Seminar Nasional Inovasi Teknologi) Jurnal Polimesin KOMET

AM Mufarrih

Politeknik Negeri Malang

Author-ID : 3416048

Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Public Health Social Sciences Transportation Other

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Effect of Moisture Content of Green Sand on The Casting Defects Nanang Qosim; AM Mufarrih; Ali Sai’in; A. Hanif Firdaus; Fina Andika F. A.; Ratna Monasari; Zakki F. Emzain
Journal of Applied Engineering and Technological Science (JAETS) Vol. 2 No. 1 (2020): Journal of Applied Engineering and Technological Science (JAETS)
Publisher : Yayasan Riset dan Pengembangan Intelektual (YRPI)

In this study, three percentages of moisture content on the green sand were benchmarked to be observed their effects on the casting defects. The metal used is scrap Al-Si with wt% of Al 59.7. The metal was melted in a furnace at 550 ºC then poured into sand molds and cooled for 24 hours before it can be removed, cleaned, and finished. There were prepared three specimens for each benchmark. Qualitative observation of defects was done by physical observations on the surface of the specimens. The observations show that on the moisture content of 2.5%, there is a defect in the form of porosity. Defects in the form of drops, misruns, blowholes, and shrinkage cavity are found on the benchmark 3.5%. The most severe defects are found on the benchmark 4.5% in the form of buckles and severe shrinkage cavities that are found in almost all specimens.

Number of Machine and Material Requirements for Production Planning of Tablet Tooling with the Demand of 200 Units/Day Nanang Qosim; Andre Kurniawan; Moh. Nasir Hariyanto; Zakki F. Emzain; Moh. Hartono; AM Mufarrih
Journal of Applied Engineering and Technological Science (JAETS) Vol. 2 No. 2 (2021): Journal of Applied Engineering and Technological Science (JAETS)
Publisher : Yayasan Riset dan Pengembangan Intelektual (YRPI)

Shaping and marketing a product in tablet form is an easy and economical alternative to product shaping. Products in tablet form now cover almost all fields, so that the demand for tablet tooling of various sizes and variations continues to increase. As an effort to support the effectiveness and proper industrial planning, it is necessary to carry out an analysis of the machine and material requirements to produce tablet tooling which is the aim of this study. To achieve these objectives, the methods used in this study include product design, operation plan analysis, and calculation of material requirements and number of machines. The result shows that the number of machine requirements to manufacture the die and punch of tablet tooling with the demand of 200 unit/day are two units of power hacksaw, five units of lathe machine, and a unit of milling machine. On the other hand, the material requirements needed in one day are 22.24 m (Ø45 mm x 5 bars) and 12.79 m (Ø18 mm x 3 bars).

Finite Element Analysis of SS316L-Based Five-Hole Plate Implant For Fibula Reconstruction Nanang Qosim; Zakki Fuadi Emzain; AM. Mufarrih; Ratna Monasari; Fataa Kusumattaqiin; Rangga E. Santoso
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)

This study analyzed the design performance of SS316L-based plate implant for fibula restoration using a Finite Element Analysis approach. The simulated model design has dimensions of 35 x 5 x 1.5 mm and five holes with 2-3 configuration. The results of the bending test simulation showed that the values for both displacement and Von Mises stress that occurred (0.008 mm and 116 MPa of each) were still considerably below the yield stress of the SS316L material. The same results were also shown in the tensile test simulation, although the clamping setting on the plate was changed on the other side. From this finite element analysis approach, the SS316L-based five-hole plate implant design has a fairly good strength performance as a fibular bone-implant restoration product.

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

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.

PENERAPAN MESIN PENIRIS MINYAK UNTUK MENINGKATKAN KUALITAS KERIPIK UMKM WONOSARI MALANG AM Mufarrih; Zakki Fuadi Emzain; Nanang Qosim; Ratna Monasari; Agus Harijono; Pipit Wahyu Nugroho
Community Development Journal : Jurnal Pengabdian Masyarakat Vol. 4 No. 4 (2023): Volume 4 Nomor 4 Tahun 2023
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/cdj.v4i4.18765

Makanan ringan dari bahan pisang, umbi, kentang dan tepung senantiasa digemari oleh Masyarakat Indonesia. UMKM Fany merupakan usaha kecil di Kabupaten Malang yang memproduksi keripik. Proses produksi keripik yang dilakukannya memiliki beberapa masalah, salah satunya adalah tingkat minyak yang tinggi pada keripik pisang. Kadar minyak yang tinggi menyebabkan keripik menjadi lembek, berminyak, tidak crunchy, dan kurang tahan lama. Tujuan dari kegiatan pengabdian masyarakat ini adalah untuk mengatasi kesulitan yang dihadapi mitra selama proses produksi keripik dengan memanfaatkan teknologi tepat guna, seperti mesin peniris minyak. Metode yang digunakan berupa survey dan wawancara kepada pemilik UMKM Fany yang memproduksi produk keripik, lalu pembuatan alat dan terakhir pelatihan serta serah terima alat. Hasil dari kegiatan pengabdian ini adalah usaha bapak Sodiq telah meningkat kualitas dan kuantitas produk olahan keripik pisangnya. Mitra mampu mengoperasikan mesin peniris minyak serta memahami cara perawatan mesin dengan benar.

Pengaruh volume gas argon terhadap kekuatan tarik pada pengelasan GTAW SUS 201 Andhika Hendrawan Febrianto; Am Mufarrih
Jurnal Teknik Mesin Indonesia Vol. 18 No. 2 (2023): 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.v18i2.480

Gas Tungsten Arc Welding (GTAW) is an arc welding process that uses a non-melting electrode. The GTAW welding process is carried out by melting the filler rod onto the object to be welded. The GTAW process on stainless steel materials, especially the SUS 201 type, has not yet obtained optimum joint strength. Therefore, it is necessary to have a research study on the tensile strength of GTAW welding results on SUS 201. The purpose of this study is to determine the effect of argon gas volume on the tensile strength of GTAW welding joints of SUS 201 material. Using experimental methods and data analysis using ANOVA. The independent variable used was the volume of argon gas, there are 5, 10, and 15 l/minute with three replications and the dependent variable was tensile strength. The results of this study indicate that the volume of argon gas has a significant effect on the tensile strength of GTAW welded material SUS 201. The maximum tensile strength value of GTAW welded with 15 l/minute argon gas volume is 630.86 MPa and the lowest value is found at 5 l/minute argon gas volume of 499.46 MPa. The greater the volume of argon gas, the greater the tensile strength. From the observation of the microstructure it is known that the volume of argon gas is 5 l/minute, the ferrite microstructure is more dominant than perlite, so the minimum tensile strength is stated. Meanwhile, at the volume of argon gas 15 l/minute, the microstructure of perlite is more dominant than ferrite, so the maximum tensile strength is stated.

Analisis elemen hingga untuk siklus berjalan pada model prostetik lentur pergelangan kaki Zakki Fuadi Emzain; Utsman Syah Amrullah; AM. Mufarrih
Jurnal POLIMESIN Vol 18, No 2 (2020): Agustus
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v18i2.1922

The model of compliant prosthetic ankle-foot is proposed as an alternative prosthetic aid for people with disabilities to do activities. The model is designed and analyzed to determine its strength and feasibility before being fabricated. The two main stages in this research are model design and model analysis. The shape of the model was designed with several elastic cavities and arches using the concept of a compliant mechanism. Finite element analysis (FEA) was performed on the prosthetic model when the stance phase on the mechanism of the human gait cycle. Because the prosthetic foot area is in contact with the ground on this cycle phase. Three main positions in 0-64% of the gait cycle are heel strike, midstance, and toe-off positions used as boundary conditions. The amount of load given adjusts the bodyweight percentage of the gait cycle with a reference of 80 kg. The direction of loading was by following the angle of the foot when dorsiflexion to plantarflexion during the stance phase. The biggest deformation results occurred in the toe-off position with two peak cycles of 4.69 mm and 4.45 mm at 17% and 51% of the gait cycle. While the smallest deformation occurred in the midstance position with an average of 0.08 mm. Because it used fixed support with two pedestals on the soles of the prosthetic. Maximum stress occurred in the toe-off position of 16.45 MPa at 17% of the gait cycle. With a safety factor of 1.63, the value is still safe because it is below the yield strength value of ABS material. While the largest strain of energy was located in the lower area in the middle of the arch between the toe and sole foot in the toe-off position of 3.55 mJ.

Design optimization of sleeve finger splint model using Finite Element Analysis Zakki Fuadi Emzain; Utsman Syah Amrullah; Am. Mufarrih; Nanang Qosim; Yusuf Dewantoro Herlambang
Jurnal POLIMESIN Vol 19, No 2 (2021): Agustus
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v19i2.2272

One of the rehabilitation alternatives for fingers injuries is to use a finger splint. Some existing finger splint models still use excessive material, and the size is not appropriate. The purpose of this study was to propose a customized sleeve finger splint model with a conical shape along with the finger surface from the proximal phalanges to the distal phalanges. Design optimization using topology optimization was carried out to reduce mass and volume while maintaining the stress strength of the model. The stages of the method in this research were modeling design, preprocessing analysis, topology optimization, and postprocessing analysis. Topology optimization design was set with 70% mass in response constraint. The analysis results showed a significant reduction in the model mass of 42.18%, from 6.78 grams to 3.92 grams. Meanwhile, the maximum equivalent stress increased slightly by 3.42%, from 8.12 MPa to 8.4 MPa. Even though there was an increase in equivalent stress after topology optimization, the sleeve finger splint model was still categorized as safe, with a safety factor of 3.39.

Desain dan Analisis Elemen Hingga Model Wrist Hand Orthosis Berbasis Metode Pemodelan Reverse Engineering Zakki Fuadi Emzain; Nanang Qosim; AM. Mufarrih; Yusuf Dewantoro Herlambang; Fatahul Arifin
Jurnal Rekayasa Mesin Vol 18, No 1 (2023): Volume 18, Nomor 1, April 2023
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v18i1.3936

Salah satu treatment untuk spasticity efek pasca stroke, fracture karena kecelakaan, injury karena cedera olahraga, dan musculoskeletal disorders karena pekerjaan kantoran pada pergelangan tangan selain dengan operasi yaitu dengan penggunaan wrist hand orthosis. Umumnya pembuatan medical device tersebut menggunakan metode konvensional yang mempunyai kekurangan. Hadirnya teknologi reverse engineering (RE) dapat diaplikasikan dalam bidang medis seperti pembuatan alat prosthetic atau orthosis. Pada penelitian ini bertujuan untuk mengembangkan desain wrist hand orthosis berbasis reverse engineering dan menganalisisnya menggunakan metode elemen hingga. Metode penelitian meliputi 3D scanning, CAD modelling, model analysis, dan post processing. Material model yang digunakan adalah ABS dengan variasi ketebalan 5 mm, 6 mm, dan 7 mm, serta besar nilai pembebanan mulai dari 5 N sampai 25 N. Hasil analisis equivalent stress menunjukkan model ketebalan 5 mm mampu menahan load 25 N dengan maximum equivalent stress sebesar 13.52 MPa yang masih tergolong aman dengan nilai safety factor 2.11 dengan area kritis di ujung punggung telapak tangan model antara ibu jari dan jari telunjuk. Hasil equivalent elastic strain dan deformation juga mempunyai tren grafik yang sama dengan nilai maximum pada model ketebalan 5 mm yaitu masing-masing sebesar 0.0057 mm dan 0.616 mm. Dari hasil analisis tersebut dapat disimpulkan bahwa model wrist hand orthosis berlubang voronoi yang memiliki bentuk seperti surface tangan manusia dengan ketebalan minimalis 5 mm mampu bekerja dengan baik memfiksasi tangan pasien untuk proses rehabilitasi.

Alat Permainan Edukatif dan Sosialisasi Read Aloud Untuk Meningkatkan Kualitas Pembelajaran di Pos PAUD Bina Cendikia Kelurahan Bareng Malang Ratna Monasari; Mufarrih, Am.; Farida, Nike Nur; Qosim, Nanang; Setiawan, Agus; Winoko, Yuniarto Agus
Jurnal Pengabdian Multidisiplin Vol. 3 No. 2 (2023): Jurnal Pengabdian Multidisiplin
Publisher : Kuras Institute & Scidac Plus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51214/japamul.v3i2.617

Meningkatkan kemampuan anak pada usia dini dapat diasah dengan memberikan ragam jenis permainan terutama permainan yang bersifat edukatif. Dengan alat permainan edukatif yang tepat perkembangan anak dapat terstimulasi secara optimal. Ragam alat permainan edukatif saat ini juga tak lepas dari metode penggunaan termasuk metode penyampaian cerita kepada anak. Pada Pos PAUD Bina Cendikia Kelurahan Bareng Kecamatan Klojen Malang ketersediaan alat permbelajaran edukatif masih terbatas sehingga kegiatan belajar untuk pengembangan aspek bahasa siswa kurang terasah. Masa golden age pada anak usia dini tidak luput dari kondisi tumbuh kembang yang optimal serta stimulus yang tepat, salah satu stimulus yang dapat diberikan kepada anak yaitu dengan membacakan cerita dengan metode read aloud agar kemampuan bahasa anak dapat meningkat. Mengacu pada kondisi tersebut melalui program PPM Politeknik Negeri Malang memberikan seperangkat alat permainan edukatif yang dapat meningkatkan kemampuan berbahasa bagi anak usia dini. Selain itu agar stimulus juga berlangsung tidak hanya di sekolah, sosialisasi membaca read aloud bagi anak juga diberikan bagi orang tua siswa. Hasil dari kegiatan PPM di Pos PAUD Bina Cendikia 1) tersedianya alat permainan edukatif untuk meningkatkan kemampuan berbahasa, 2) Guru dan orang tua siswa menyambut dengan baik materi sosialisasi read aloud untuk memberikan stimulasi kemampuan berbahasa anak usia dini dan menerapkannya setiap hari.

Co-Authors A. Hanif Firdaus Agus Harijono Agus Setiawan Agus Seto Nugroho Ahmad Hanif Firdaus Akhmad Amirudin Ali Sai’in Amrullah, Utsman Syah Amrullah, Utsman Syah Andhika Hendrawan Febrianto Andre Kurniawan Anwar, Ahmad Aris Wibowo David, Jiwan Dwi Setyawan Effendi, Hermawan Emzain, Zakki F Etik Puspitasari, Etik Farida, Nike Nur Fataa Kusumattaqiin Fatahul Arifin Fatkhur Rohman Fatkur Rhohman, Fatkur Fauzi, Ah Sulhan Fina Andika F. A. Gugun Gundara, Gugun Hamidi, Nurcholis Harijono, Agus Hariyanto, Moh. Nasir Hermin Istiasih Hesti Istiqlaliyah Hidayatinnisa’, Nurul Istiqlaliya, Hesti Khambali Khambali Kuni Nadliroh Moh. Hartono Moh. Nasir Hariyanto Mohammad Muslimin Ilham Mohammad Zaenal Fanani Monasari, Ratna Nanang Qosim Nicky Suwandhy Widhi Supriyanto Nugroho, Pipit Wahyu Nuryosuwito, Nuryosuwito Prakoso, Dion Prayoga, Rendi Raharjo, Nain D Rangga E. Santoso Ratna Monasari Ratna Monasari Rizki Priya Pratama, Rizki Priya S., Sudjito Safrudin, Moch Samsul Hadi SANTOSO SANTOSO Saut Kasdiardi Silalahi Setiawan, Pendik Bagus Setyowidodo, Irwan Setyowidodo, Irwan Setyowidodo Shaifudin, Adi Suryo Widodo Suyanta Suyanta Syamsul Hadi Viyus, Vinan Widya Wijayanti Yanuar Mahfudz Safarudin Yuniarto Agus Winoko, Yuniarto Agus Yusuf Dewantoro Herlambang Zaenal Fanani, Mohammad Zakki Fuadi Emzain

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