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Analisis Sifat Fisik dan Kompresibilitas Nanopowder Zinc Oxide (ZnO) sebagai Alternatif Material Amalgam Qosim, Nanang; Murdanto, Putut; Puspitasari, Poppy
Jurnal Rekayasa Mesin Vol 9, No 1 (2018)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (449.208 KB) | DOI: 10.21776/ub.jrm.2018.009.01.2

Abstract

Severe effects of the mercury use on health as an amalgam material have required an alternative material in order to eliminate it from amalgam composition. This research was conducted to analyze the physical properties and compressibility of ZnO nanopowder as an alternative amalgam material. The physical properties including morphology, dimensions, and the atomic ratio were analyzed by SEM, XRD-XRF and EDX. Further, the compressibility was conducted by using hydraulic press machine. The results showed that ZnO has particle size of 14.34 nm with morphology classified as nanorods. In the compressibility test, both the variation of compression loadings and holding time have brought an effect on the significant increase of ZnO nanopowder density.
Fabrikasi Prototipe Implan Tulang Maksilofasial sebagai Produk Implan Lokal Qosim, Nanang
ROTASI Vol 21, No 4 (2019): VOLUME 21, NOMOR 4, OKTOBER 2019
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (488.574 KB) | DOI: 10.14710/rotasi.21.4.231-236

Abstract

Pasar alat kesehatan di Indonesia sejauh ini masih didominasi oleh produk-produk impor. Kelemahan utama produk impor bagi negara berkembang adalah harganya yang mahal. Oleh karena itu, lima tahun ke belakang para peneliti berkolaborasi dengan pihak industri dalam negeri menggencarkan pengembangan alat-alat kesehatan buatan dalam negeri. Riset ini bertujuan untuk mengembangkan produk implan maksilofasial berupa screw dan miniplate berbasis titanium sebagai produk alat biomedis buatan dalam negeri. Proses desain mengacu pada rekomendsi dari dokter spesialis bedah maksilofasial. Metode fabrikasi menggunakan proses micro turning untuk screw, sedangkan miniplate menggunakan wire cutting dan EDM. Selanjutnya, dilakukan pula proses deburring dan ultrasonic cleaning sebagai tahapan akhir. Hasil fabrikasi menunjukkan bahwa prototipe screw dan miniplate telah berhasil diproduksi dengan toleransi geometri yang dapat diterima sebagai sebuah produk implan.
Comparison Study of Analysis of Water Tower Structure Using Finite Element Method and Engineering Equation Solver Qosim, Nanang; Pamungkas, Putra M; Fitriyana, Barkah; Pratomo, Wanda; Lassandy, Marthan
Jurnal Teknologi Terapan Vol 4, No 1 (2018): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1368.274 KB) | DOI: 10.31884/jtt.v4i1.81

Abstract

This study aims to compare the analysis results of the maximum deformation and maximum stress on water structure using finite element method and engineering equation solver (EES). Simulation results show that verification successfully performed, with deformation value obtained is convergent to certain value with maximum percentage of 0,40%. Further, the maksimum stress value is still under the allowable stress of material 160 MPa. Hence, the structure of water tower with a capacity of 500 liters is safe to use. The result of calculation using EES shows that the deformation value is 1.70 mm. This value is different about 0.31 or 18.24% compared to the deformation value of 2.01 mm using fine meshing on ANSYS.
Pengaruh Modifikasi Pisau Pemotong Dan Kecepatan Putaran Terhadap Unjuk Kerja Mesin Pemipih Dan Pemotong Adonan Mie Qosim, Nanang; Qiram, Ikhwanul; Rubiono, Gatut
Virtual of Mechanical Engineering Article Vol 3 No 2 (2018)
Publisher : Prodi Teknik Mesin Universitas PGRI Banyuwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

In this study modifications to the cutting knife and rotational speed were carried out. With blade variations of 2mm, 3mm and 4mm and rotational speeds of 300, 900 and 1500 rpm. After the research process is carried out, the noodle product tests include the length of the noodles, thickness, and elongation values. For testing, the length and thickness of the noodles used a measuring device ruler and calipers and testing the value of elongation was done by tensile tests. The results of the study showed the percentage shrinkage of 0.0% noodle dough weight. This shows the test equipment is working optimally. The faster the rotation of the motor the difference between long and thick noodles tends to increase. This shows that the rotation speed has an influence on the performance of the flattening machine and noodle dough cutter. The faster the motor rotation, the elongation value of noodles tends to decrease. This is due to the rotation speed of the motor that affects the occurrence of broken noodles. The greater the size of the noodles the risk of breaking up the noodles decreases. The faster the motor rotation, the greater the capacity produced.
Pengaruh Penambahan Zat Aditif Pada Campuran Bahan Bakar Bensin – Bioethanol Terhadap Specific Fuel Consumption Monasari, Ratna; Firdaus, Ahmad Hanif; Qosim, Nanang
Jurnal Pendidikan Teknik Mesin Undiksha Vol 9, No 1 (2021)
Publisher : UNIVERSITAS PENDIDIKAN GANESHA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v9i1.31797

Abstract

Pemanfaatan energi terbarukan di Indonesia masih tergolong rendah dibandingkan dengan sumber energi tak terbarukan dari minyak bumi, batu bara, maupun gas alam. Dengan jumlah energi tak terbarukan yang terbatas mendorong untuk mengembangkan penggunaan bahan bakar alternatif. Saat ini bioetanol merupakan salah satu bahan bakar alternatif yang sedang dikembangkan sebagai pengganti maupun campuran bahan bakar bensin, yang dikenal sebagai etanol anhidrat yang memiliki konsentrasi diatas 96%. Campuran bioetanol memberikan pengaruh terhadap peningkatan bilangan oktan dan mampu mengurangi emisi gas buang yang dihasilkan. Untuk mendapatkan efek yang lebih optimal dalam konsumsi bahan bakar zat aditif seperti oxygenated cyclohexanol ditambahkan pada campuran bahan bakar. Studi dilakukan pada perbandingan bahan bakar E5 sampai E15 dengan penggunaan aditif tersebut. Pengujian konsumsi bahan bakar dilakukan pada mesin satu silinder spark ignition dengan posisi bukaan throttle 100%. Terdapat sensor pada bagian tanki bahan bakar untuk menghitung specific fuel consumption (SFC) dengan variasi kecepatan mesin. Penelitian ini bertujuan untuk melihat pengaruh penambahan zat aditif pada campuran bahan bakar terhadap konsumsi bahan bakar.Kata kunci: bensin; bioetanol; emisi gas buang; zat aditif.The use of renewable energy in Indonesia is still low compared to non-renewable energy sources from petroleum, coal, and natural gas. The limited amount of non-renewable energy encourages developing the use of alternative fuels. Currently, bioethanol is an alternative fuel that is being developed as a substitute or mixture of gasoline fuel, known as anhydrous ethanol which has a concentration above 96%. The bioethanol mixture has an effect on increasing the octane number and is able to reduce the resulting exhaust gas emissions. To get a more optimal effect on fuel consumption, additives such as oxygenated cyclohexanol are added to the fuel mixture. Studies were carried out on the comparison of fuel E5 to E15 with the use of these additives. The fuel consumption test was carried out on a single-cylinder spark-ignition engine with a 100% throttle opening position. There is a sensor on the fuel tank to calculate the specific fuel consumption (SFC) with variations in engine speed. This study aims to determine the effect of adding additives to the fuel mixture on fuel consumption.Keywords : fuel; bioethanol; exhaust gas emissions; additives. DAFTAR RUJUKANAbikusna, S., Sugiarto, B., & Suntoro D. (2017). Low Grade Bioethanol for Fuel Mixing on Gasoline Engine Using Distillation Process. in AIP Conference Proceedings. AIP Publishing.Abikusna, S. (2018). The Effect of Additive on Combustion Characteristics and Cycle to Cycle Variations on SI Engine Fueled by Gasoline and Bioethanol, Technology organic and inorganic substances. P. 27-37. Doi: 10.15587/1729-4061.2018.147585Abikusna, S., B. Sugiarto, & Zulfan, A. (2017). Fuel consumption and emission on fuel mixer low-grade bioethanol fuelled motorcycle. in MATEC Web of Conferences. EDP Sciences.Costa, R. C., &  Sodré, J.R.  (2011). Compression ratio effects on an ethanol/gasoline fuelled engine performance. Applied Thermal Engineering, 31(2): p. 278-283.de Melo, T.C.C., et al., 2012. Hydrous ethanol–gasoline blends–Combustion and emission investigations on a Flex-Fuel engine. Fuel, 97: p. 796-804.Costa, R.C. & Sodré, J.R. (2009) . Hydrous Ethanol Vs. Gasoline-Ethanol Blend: Engine Performance and Emissions. International Journal of FuelGao, J. D. J., &  Huang, Z. (2007). Spray Properties of Alternative Fuels: A Comparative Analysis of Ethanol–Gasoline Blends and Gasoline. Fuel. 86(10): p. 1645-1650.Keith, O., & Trevor, C. (1995). Automotive fuels reference book. Society of Automotive Engineers, Inc. Warrendale,  p. 487.Gholamhassan, N. B. G., Yusaf, T. Safieddin, S. M., & Ardebili, R.M. (2015). Optimization of performance and exhaust emission parameters of a SI (spark ignition) engine with gasoline-ethanol blended fuels using response surface methodology. Elsevier, energy xxx: p. 15.Jang, S. H., & Choi, J. H. (2016). Comparison of fuel consumption and emission characteristics of various marine heavy fuel additives. Applied Energy, 179, 36–44. https://doi.org/10.1016/j.apenergy.2016.06.122Monasari, R., Abikusna, S., Sugiarto, B., & Ajiseno, B. (2018). IOP Conference Series: Earth and Environmental Science Analysis of emission gas and fuel consumption on SI engine fueled with low-grade bioethanol and oxygenated cycloheptanol additive Analysis of emission gas and fuel consumption on SI engine fueled with low-grade bioethanol and oxygenated cycloheptanol additive. 105, 12058. https://doi.org/10.1088/1755-1315/105/1/012058Srinivasan, C. A., &  Saravanan, C. (2010). Study of Combustion Characteristics of an SI Engine Fuelled with Ethanol and Oxygenated Fuel Additives. Journal of Sustainable Energy & Environment. 1(2): p. 85-91.Sugiarto, B. (2002) Motor Pembakaran Dalam. Jakarta: Universitas Indonesia. ISBN 979- 97726-7-2.Thangavelu, S. K., Ahmed, A. S., & Ani, F. N. (2016). Review on Bioethanol as Alternative Fuel for Spark Ignition Engines. Renewable and Sustainable Energy Reviews. 56: p. 820-835Zhao, L., Wang, X., Wang, D., & Su, X. (2020). Investigation of the effects of lean mixtures on combustion and particulate emissions in a DISI engine fueled with bioethanol-gasoline blends. Fuel, 260, 116096. https://doi.org/10.1016/j.fuel.2019.116096
Pengaruh Kalium Hidroksida Terhadap Emisi Gas Buang Motor Bensin Berbahan Bakar Biogas Firdaus, Ahmad Hanif; Monasari, Ratna; Qosim, Nanang; Astuti, Fina Andika Frida
Jurnal Pendidikan Teknik Mesin Undiksha Vol 9, No 1 (2021)
Publisher : UNIVERSITAS PENDIDIKAN GANESHA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v9i1.31545

Abstract

Kebutuhan alat transportasi menjadi sesuatu hal yang sangat penting untuk mendukung peningkatan mobilitas orang, barang, dan jasa di era globalisasi seperti saat ini. Penggunaan alat transportasi berbasis motor bakar dengan bahan bakar fosil sebagai sumber energi utama memberi dampak yang sangat serius jika dibiarkan. Bahan bakar fosil adalah energi tak terbarukan yang jumlahnya di alam pun semakin menipis yang suatu saat akan habis dan jika digunakan dapat menghasilkan emisi gas buang yang dapat merugikan kesehatan dan lingkungan. Saat ini terdapat perkembangan yang cukup signifikan dalam usaha menciptakan dan menemukan bahan bakar alternatif, biogas menjadi salah satunya. Namun, biogas murni yang dihasilkan masih banyak mengandung zat pengotor yang menganggu dalam proses pembakaran sehingga perlu dilakukan pemurnian. Salah satu teknik pemurnian biogas adalah dengan menggunakan larutan Kalium Hidroksida (KOH). Penelitian ini bertujuan untuk mengetahui efek kalium hidroksida terhadap emisi gas buang mesin bensin berbahan bakar biogas. Metode yang digunakan dengan eksperimen secara langsung. Variabel bebas dalam penelitian ini adalah variasi konsentrasi Kalium Hidroksida (KOH) sebesar 5 M, 10 M, dan 15 M pada putaran mesin 5500, 5700, 5900, 6100, 6300 dan 6500 rpm. Variabel terkontrolnya bukaan throttle 100%, waktu pengapian 39° sebelum TMA (Titik Mati Atas) dan laju alir KOH 1 ml/s, variable terikatnya adalah emisi gas buang CO dan HC. Dari hasil penelitian diketahui bahwa semakin besar konsentrasi KOH yang ditambahkan akan menghasilkan emisi gas buang yang minimal, yaitu pada penambahan KOH dengan konsentrasi 15 M yang menghasilkan emisi gas buang CO sebesar 0,237 (% vol) dan HC 84 (ppm vol).Kata kunci: Biogas; Emisi; Kalium Hidroksida; Mesin Bensin.The use of engine-fuel-based transportation with fossil fuels as the main energy source has a very serious impact. Fossil fuels are non-renewable energy whose numbers in nature are depleting which one day it will run out and if used can produce exhaust gas emissions that can harm health and the environment. Currently there are significant developments in the effort to create and find alternative fuels, biogas being one of them. However, the pure biogas produced still contains many impurities that interfere with the combustion process so that it needs to be purified. One of the biogas purification techniques is by using a solution of potassium hydroxide (KOH). This study aims to determine the effect of KOH on the exhaust gas emissions of biogas fueled otto engines. The method using direct experimentation, independent variable were the variation in the concentration KOH of 5 M, 10 M, and 15 M at engine speed of 5500, 5700, 5900, 6100, 6300 and 6500 rpm. The controlled variables were 100% throttle opening, the ignition time was 39 ° before TDC (Top Dead Centre) and the KOH flow rate was 1 ml / s, the dependent variables were the exhaust emissions of CO and HC. From the results, it is known that the greater the KOH concentration added will produce minimal exhaust gas emissions, namely the addition of KOH with a concentration of 15 M which results in CO exhaust emissions of 0.237 (vol%) and HC 84 (ppm vol). Keywords : Biogas; Emission; Potassium Hydroxide, Otto Engine. DAFTAR RUJUKANAbdussalam., Fernandez, D., & Lapisa, R. (2018). Penggunaan biogas sebagai bahan bakar alternatif pada mesin generator set multi equipment (Me) 1800. Automotive Engineering Education Journals, 2(2), 1-7.Ardhiany, S. (2018). Proses absorbsi gas CO2 dalam biogas menggunakan alat absorber tipe packing dengan analisa pengaruh laju alir absorben NaOH. Jurnal Teknik Patra Akademika, 9(2), 55-65.Fahmayanti, Y., & Abtokhi, A. (2018). The addition effect of NaOH and KOH toward biogas purification. Jurnal Neutrino: Jurnal Fisika dan Aplikasinya, 10(2), 40-44.Hardianto, A., & Hermawan, D. (2019). Pengaruh filterisasi bertingkat larutan KOH, NaOH dan TEA terhadap penurunan prosentase CO2 pada biogas. Jurnal Flywheel, 10(1), 43-54.Hermawan, D., Hamidi, N., & Sasongko, M. N. (2016). Performansi purifikasi biogas dengan KOH based absorbent. Jurnal Rekayasa Mesin, 7(2), 65-73.Hery, A. F., Septiropa, Z., Riansyah, S., & Romadhi, F. (2011). Pemanfaatan biogas/landfillgas sebagai bahan bakar mesin bensin 1 silinder 4 langkah. Jurnal Teknik Industri, 12(2) 162-168.Nurdin, A., & Aries, D. (2018). Review aplikasi bahan bakar biogas pada motor bakar SI (spark ignition). Jurnal SIMETRIS, 9(2), 797-802.Prastya, R., Susilo, B., & Lutfi, M. (2013). Pengaruh penggunaan bahan bakar biogas terhadap emisi gas buang mesin generator set. Jurnal Keteknikan Pertanian Tropis dan Biosistem, 1(2), 77-84.Prihutama, F. A., Firmansyah, D. N., Siahaan, K. S. H., & Fahmi, B. (2017). Pemanfaatan biogas sebagai energi alternatif ramah lingkungan daerah Desa Monggol, Kabupaten Gunungkidul, Yogyakarta. SNITT-Politeknik Negeri Balikpapan, 87-95.Rao, A. B. & Rubin, E. S. (2002). A technical, economic and environmental assessment of amine based carbon capture technology for power plant greenhouse gas control. Environmental Science & Technology, 36(20), 4467-4475Ritonga, A. M., & Masrukhi. (2017). Optimasi kandungan metana (CH4) biogas kotoran sapi menggunakan berbagai jenis adsorben. Jurnal Rona Teknik Pertanian, 10(2), 8-17.Ritonga, A. M., Masrukhi., & Kusmayadi, R. P. (2020). Pemurnian biogas metode adsorpsi menggunakan down-up purifier dengan arang aktif dan silika gel sebagai adsorben. Journal of Agricultural and Biosystem Engineering Research, 1(1), 72-80.Sunaryo. (2014). Uji eksperimen pemurnian biogas sebagai pengganti bahan bakar motor bensin. Jurnal PPKM II, 123-130.Suputra, I. M. T., Nindhia, T. T., & Surata, W. (2017). Pemurnian biogas dari gas pengotor CO2 menggunakan campuran kalium hidroksida padat dengan sekam padi. Jurnal Ilmiah Teknik Desain Mekanika, 6(3), 272-275.Sutanto, R., Alit, I. B., & Rezeki, G. (2016). Pengaruh absorsi gas CO2 dan H2S dalam biogas menggunakan pasta batu apung terhadap peningkatan unjuk kerja motor bakar. Jurnal Dinamika Teknik Mesin, 6(1), 31-37.Suyatno A., & Hermawan, D. (2016). Analisis campuran KOH dan H2O terhadap proses penyerapan CO2 pada biogas hasil ternak dan biogas hasil tempat pembuangan sampah (TPS). Jurnal Widya Teknika, 24(1), 1-5.Van Bhat, R. D., Kuipers, J.A M. & Versteeg, G. F. (2000). Mass transfer with complex chemical reactions in gas-liquid system: two step reversible reactions with unit stoichiometric and kinetic order. Chemical Engineering Journal, 76(2), 127-152.
Analisa Kekasaran Permukaan Titanium Grade 2 pada Proses Frais Mufarrih, AM.; Hariyanto, Moh. Nasir; Qosim, Nanang
Jurnal Pendidikan Teknik Mesin Undiksha Vol 8, No 2 (2020)
Publisher : UNIVERSITAS PENDIDIKAN GANESHA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v8i2.27766

Abstract

 Titanium Grade 2 termasuk jenis bahan yang sering dipergunakan di industri, utamanya pada bahan untuk implan biomedis. Titanium Grade 2 mempunyai sifat perbandingan kekakuan terhadap berat yang baik, tahan terhadap korosi dan memiliki sifat biokompatibel yang baik di dalam tubuh. Namun memiliki konduktifitas panas yang rendah, sehingga perlu memilih perameter pemesinan yang tepat untuk menghasilkan nilai kekasaran permukaan yang baik. Penelitian ini bertujuan untuk mengetahui karakteristik Titanium Grade 2 yaitu kekasaran permukaan hasil pemesinan frais. Desain penelitian menggunakan metode Taguchi L9, dengan 2 faktor dan 3 level. Parameter pemesinan yang digunakan ialah putaran spindel 500; 700; 900 rpm dan kecepatan pemakanan 25; 50; 75 mm/menit. Variabel respon yang diteliti ialah kekasaran permukaan. Proses frais dilakukan menggunakan Mesin CNC Dahlih. Kekasaran permukaan diukur menggunakan Mitutoyo surface roughess tester. Analisis data menggunakan analisis ANOVA. Hasil penelitian menunjukan bahwa ada pengaruh variasi parameter pemesinan terhadap respon kekasaran permukaan. Variabel putaran spindel mempunyai p-value sebesar 0,039 dan variabel gerak makan memiliki p-value sebesar 0,025. Hal ini menunjukkan bahwa kedua variabel bebas tersebut memiliki pengaruh yang signifikan terhadap respon kekasaran permukaan. Kekasaran permukaan terendah dapat dicapai dengan pengaturan putaran spindel sebesar 700 rpm dan kecepatan pemakanan sebesar 25 mm/menit. Kata kunci: titanium grade 2, kekasaran permukaan, frais, anova Daftar RujukanBagno, A., & Di Bello, C. (2004). Surface treatments and roughness properties of Ti-based biomaterials. Journal of Materials Science: Materials in Medicine. https://doi.org/10.1023/B:JMSM.0000042679.28493.7fBruce, 2011. (2013). Analisis Kekasaran Permukaan Dan Getaran Pada Pemesinan Bubut Menggunakan Pahat Putar Modular (Modular Rotary Tools) Untuk Material Titanium 6Al-4V Eli. Journal of Chemical Information and Modeling. https://doi.org/10.1017/CBO9781107415324.004Davim, J. P. (2011). Machining of hard materials. Machining of Hard Materials. https://doi.org/10.1007/978-1-84996-450-0Ganguli, S., & Kapoor, S. G. (2016). Improving the performance of milling of titanium alloys using the atomization-based cutting fluid application system. Journal of Manufacturing Processes. https://doi.org/10.1016/j.jmapro.2016.05.011Karkalos, N. E., Galanis, N. I., & Markopoulos, A. P. (2016). Surface roughness prediction for the milling of Ti-6Al-4V ELI alloy with the use of statistical and soft computing techniques. Measurement: Journal of the International Measurement Confederation. https://doi.org/10.1016/j.measurement.2016.04.039Kiswanto, G., Mandala, A., Azmi, M., & Ko, T. J. (2020). The effects of cutting parameters to the surface roughness in high speed cutting of micro-milling titanium alloy ti-6al-4v. Key Engineering Materials, 846 KEM, 133–138. https://doi.org/10.4028/www.scientific.net/KEM.846.133Mufarrih, A., Istiqlaliyah, H., & Ilha, M. M. (2019). Optimization of Roundness, MRR and Surface Roughness on Turning Process using Taguchi-GRA. In Journal of Physics: Conference Series. https://doi.org/10.1088/1742-6596/1179/1/012099Nithyanandam, J., Das, S. L., & Palanikumar, K. (2015). Inluence of Cutting Parameters in Machining of Titanium Alloy. Indian Journal of Science and Technology, 8(8), 556–562. https://doi.org/10.17485/ijst/2015/v8i/71291Oshida, Y. (2012). Bioscience and Bioengineering of Titanium Materials: Second Edition. Bioscience and Bioengineering of Titanium Materials: Second Edition. https://doi.org/10.1016/C2011-0-07805-5Setyowidodo, I., Sutanto, S., Mufarrih, A., & Sholehah, I. M. (2020). Exhaust temperature and peltier element optimization of thermoelectric generator output. In IOP Conference Series: Materials Science and Engineering. https://doi.org/10.1088/1757-899X/850/1/012007Shucai, Y., Chunsheng, H., & Minli, Z. (2019). A prediction model for titanium alloy surface roughness when milling with micro-textured ball-end cutters at different workpiece inclination angles. International Journal of Advanced Manufacturing Technology. https://doi.org/10.1007/s00170-018-2852-6Soepangkat, B. O. P., Pramujati, B., Effendi, M. K., Norcahyo, R., & Mufarrih, A. M. (2019). Multi-objective Optimization in Drilling Kevlar Fiber Reinforced Polymer Using Grey Fuzzy Analysis and Backpropagation Neural Network–Genetic Algorithm (BPNN–GA) Approaches. International Journal of Precision Engineering and Manufacturing. https://doi.org/10.1007/s12541-019-00017-zTapiero, H., Townsend, D. M., & Tew, K. D. (2003). Trace elements in human physiology and pathology. Copper. Biomedicine and Pharmacotherapy. https://doi.org/10.1016/S0753-3322(03)00012-XThepsonthi, T., & Özel, T. (2012). Multi-objective process optimization for micro-end milling of Ti-6Al-4V titanium alloy. International Journal of Advanced Manufacturing Technology. https://doi.org/10.1007/s00170-012-3980-zWennerberg, A., & Albrektsson, T. (2009). Effects of titanium surface topography on bone integration: A systematic review. Clinical Oral Implants Research. https://doi.org/10.1111/j.1600-0501.2009.01775.x 
Design and Analysis of a Dynamic Splint Based on Pulley Rotation for Post-Stroke Finger Extension Rehabilitation Device Emzain, Zakki Fuadi; Huang, Shyh-Chour; Yang, Yu-Sheng; Qosim, Nanang
Jurnal Rekayasa Mesin Vol 11, No 3 (2020)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2020.011.03.20

Abstract

The presence of rehabilitation tools is essential to more rapidly cure hand muscle disorders of people affected by stroke. One of the tools is a dynamic splint that is fit-sized, lightweight, comfortable to wear, and easy to operate. The paper proposes the design and analysis of new dynamic splints based on pulley rotation as a rehabilitation device for finger extension after stroke. This device consists of the main splint, the pulley, the locker, the finger handles, the ball bearing, and the fishing line. To lock and stop pulley turning, the locking system is designed to complement it which is also the most important mechanical segment. The shear stress of the pulley was 0.026 N/mm2. The deformation, stress, and strain energy of the locking system section were analyzed by the finite element method. The results showed that the deformation distribution around the locker section was at 0.1-0.15 mm intervals. The maximum stress 25.0786 MPa, which is still inferior to the yield strength of ABS Material (28.5 MPa). The safety factor of the structure is about n = 1.14. The largest strain energy was 0.2856 mJ at the same place as with the maximum stress which was close to the conical end of the locker. The correlation between stress-strain energy and moment was linear as well. In future work, a prototype will be fabricated using 3D printers, and it will be applied to the stroke patient. In addition, the therapies will be involved to assess the improvement of the finger extension of stroke patients.
PPM PENGELOLAHAN DAN PEMBINAAN USAHA MIKRO PEMBUATAN KRUPUK MUJAIR DAN BELUT DI DUKUH KAUMAN SUMBER REJO SURABAYA BARAT Kartika, Chandra; Rudiatno, Rudiatno; Suhariningsih, Lilik; Riduwan, Riduwan; Qosim, Nanang
PEDULI: Jurnal Ilmiah Pengabdian Pada Masyarakat Vol 5 No 1 (2021)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37303/peduli.v5i1.273

Abstract

This Community Empowerment Program activity is carried out in order to provide more assistance and provide community empowerment that has been done by partners, namely Mrs. Hj. Asmaul Husna in Sumber Rejo II Rt. 3 Rw 2 Pakal Subdistrict, Benowo Surabaya located no more than 4.1 kilometers from Wijaya Putra University. Krupuk community partnership program partner in Sumber Rejo II Village Rt. 3 Rw 2 Pakal Subdistrict, Surabaya located no more than 4.5 kilometers from Wijaya Putra University, using the surrounding residents as employees and production personnel. The purpose of this Community Empowerment Program activity is to develop SME partners production krupuk Ikan with the target to be achieved is SMEs has capital in the form of a krupuk dryer oven machine to increase production, good business management, expand the market reach, have product design, have a krupuk packaging machine and halal label krupuk products, so that SMEs have the ability to be a business that is ready to meet customer demand and ready to be competent. The methods implemented in this Community Empowerment Program are training and mentoring: training on how to use a krupuk dryer oven machine, packaging machine, business management assistance so that partners become resilient and competitive SMEs. In addition, the manufacture of TTG and adequate production equipment is also carried out in this activity. Training and mentoring activities of business management carried out by including marketing management (potential market identification, promotion, selection of sales locations, entrepreneurship (innovation of krupuk production variations), financial administration (determination of production costs and preparation of simple financial statements) and quality and health management (improvement of production design, testing to obtain halal production label certification). The result of this Community Empowerment Program is expected to increase the income and productivity of the target partner group
Homemade Hanger Tool Untuk Meningkatkan Produksi UKM Gantungan Baju di Desa Sukodono Kabupaten Tulungagung Mufarrih, AM; Syah Amrullah, Utsman; Fuadi Emzain, Zakki; Qosim, Nanang
Panrannuangku Jurnal Pengabdian Masyarakat Vol. 2 No. 1 (2022)
Publisher : Lembaga Penelitian dan Pengembangan Teknologi dan Rekayasa, Yayasan Ahmar Cendekia Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35877/panrannuangku561

Abstract

Desa Sukodono merupakan satu dari desa di kecamatan Karangrejo yang penduduknya rata-rata berprofesi sebagai petani, pedagang, sopir, usaha gantungan baju dan lain-lain. Desa ini terkenal dengan banyaknya industri rumahan pengelasan dan produksi gantungan baju. Sedangkan UD. Buana Putra Sumber Rizki bergerak dalam bidang pembuatan gantungan baju. Tetapi dengan banyaknya kompetitor menjadikan sepinya konsumen. Minimnya pengetahuan manajemen usaha, kurangnya modal dan sulitnya mengakses dana bantuan modal usaha, menjadikan ukm ini tidak bisa berkembang. Tujuan PPM ini adalah untuk mempermudah dan mempercepat produksi gantungan baju dengan cara memberikan seperangkat homemade hanger tool. Luaran program PPM yang diharapkan adalah pelatihan pengoperasian homemade hanger tool, sehingga dapat meningkatkan kapasitas produksi dan penjualan. Hal ini diharapkan dapat meningkatkan kesejahteraan para mitra dan masyarakat. Tahapan pelaksanaan kegiatan PPM ini adalah suvei lapangan, pembuatan alat, pelatihan penggunaan alat, serta serah terima alat alat kepada mitra. Hasil evaluasi kegiatan menunjukkan bahwa perangkat homemade hanger tool dapat berfungsi dengan baik, mitra PPM mampu mengoperasikan homemade hanger tool dengan baik, serta produksi gantungan baju bisa meningkat.