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DESAIN ERGOMETER KAYAK BERDASARKAN ANTROPOMETRI DAN BIOMEKANIK ATLET Muhammad Nuzan Rizki; A Asnawi; Nurul Islami; Rizki Aulia Nanda; Dedi Afandi
Malikussaleh Journal of Mechanical Science and Technology Vol 6, No 3 (2022): Malikussaleh Journal of Mechanical Science and Technology
Publisher : Malikussaleh University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/mjmst.v6i3.10405

Abstract

Kekuatan otot dan daya tahan kaki sangat penting dalam menghasilkan rotasi tubuh bagian atas yang baik. Namun, latihan kekuatan tubuh bagian atas lebih diutamakan dari pada latihan kekuatan bagian tubuh lainnya karena keterlibatannya yang lebih dominan dalam stroke saat mendayung. Oleh karena itu, Atlet kayak memerlukan sarana latihan yang dapat membantu dalam upaya peningkatan kekuatan tubuh bagian atas. Salah satu sarana yang terbukti mampu memenuhi kebutuhan latihan Atlet tersebut yaitu Ergometer Kayak. Ergometer kayak dapat mensimulasikan kegiatan dayung di air dan menjadi sarana pelatihan yang mudah karena dilakukan di daratan. Pada penelitian ini dilakukan perancangan alat ergometer kayak berdasarkan antropometri dan biomekanik Atlet. Diawali dengan melakukan identifikasi kebutuhan, menyusun spesifikasi teknis, pengukuran antropometri & biomekanik Atlet, dan diakhiri dengan mendesain ergometer kayak menggunakan perangkat lunak CAD. Hasil dari penelitian ini yaitu desain ergometer kayak yang sesuai dengan antropometri dan biomekanik Atlet. Sehingga dapat membantu Atlet untuk meningkatkan kenyamanan dan kualitas pada saat pelatihan.
PEMBERDAYAAN MASYARAKAT DESA MELALUI PELATIHAN MEKANIK DI KECAMATAN MUARA SATU KOTA LHOKSEUMAWE Z Zulfahmi; Yasir Amani; Abdul Rahman; Adi Setiawan; Muhammad Nuzan Rizki; A Alchalil
JURNAL HURRIAH: Jurnal Evaluasi Pendidikan dan Penelitian Vol. 3 No. 4 (2022): Jurnal Hurriah: Jurnal Evaluasi Pendidikan dan Penelitian
Publisher : Yayasan Hurriah, Banda Aceh

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

Abstract

Aceh Government data for year 2020 shows the number of vehicles circulating in its territory has reached 2.7 million units of vehicles consisting of 2.1 million motorcycles and 600 thousand cars. Vehicle maintenance and repair service businesses began to grow both in urban and rural areas. The vehicle maintenance and repair service business consist of various areas of expertise including: engine expertise which includes oil changes, engine tune up, engine overhaul, engine electrical and brake systems. While the expertise of the chassis and body (frame and body) which includes: setting the frame, body repair & painting. The achievement of this community service is (1) to provided education and skills regarding service and repair and overhaul techniques for motorcycle components, (2) Provided knowledge about the mechanical working principles of motorcycle components and how to repair them. The training methods used include lectures to increase knowledge on how to repair vehicles; question and answer, discussion, and guidance on motorcycle repair practices. The results of the training, after conducting a basic mechanical competency, participants able to disassemble and reassemble vihicle parts perfectly, and also able to service and perform vehicle maintenance proficiently.
Perancangan dan Pembuatan JIG FOG Lamp Mobil Dengan Material Aluminium Rizki Aulia Nanda; Karyadi Karyadi; Fathan Mubina Dewadi; Muhammad Nuzan Rizki
Jurnal Mekanik Terapan Vol 4 No 1 (2023): April 2023
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/jmt.v4i1.5609

Abstract

Car Fog Lamp is a safety feature whose function makes it easier for the driver to keep shining in bad weather conditions. Fog Lamp itself is a weather lamp that is produced to penetrate fog and illuminate the road ahead, with this need, the company developed a jig for fog lights on cars, Jig is basically a tool used in the machining process to make more accurate copies of production parts. The purpose of this research is to make a small industrial-scale jig for car fog lamps. The method used to make the jig starts with determining the size of the fog lamp, the design process, design input to the CNC, running CNC, and jig results. The results of this study began by displaying the design results with dimensions of 396 x 140 x 45 (p x l x h (mm)) with a hole diameter of 75 mm at a depth of 40 mm. The test was carried out using 10 specimens with successful results according to design 7 and failure 3. Then the success rate for making car jigs is 70%. Failure in the manufacture of jigs, namely defects in the results of CNC milling and oval shape due to fatigue in the tool.
Influence of shielding gas flow on the TIG welding process using stainless steel 304 material Aljufri Aljufri; Sofyan Sofyan; Muhammad Nuzan Rizki; Reza Putra; Indra Mawardi
Journal of Welding Technology Vol 6, No 1 (2024): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jowt.v6i1.5322

Abstract

A common issue encountered with main heat exchanger equipment is improper operation, which can lead to the development of cracks in the stainless-steel pipes. The welding process alters the metal microstructure in the heat-affected zone, thereby affecting the mechanical properties of the welded joint. To mitigate this issue, TIG welding with argon shielding gas is employed. This method helps prevent oxidation and ensures the formation of a stable welding arc in 304 stainless steel, which is renowned for its excellent mechanical properties and corrosion resistance. The objective of this study is to evaluate the impact of variations in shielding gas flow on the mechanical properties of 304 stainless steel plates during the TIG welding process. The aim is to determine the optimal settings for producing robust and long-lasting welded joints. To assess the hardness of the welded joints, we employed a Brinell-type Hardness Tester FB-3000LC machine. A Brinell steel ball indenter measuring 5 mm on the HBW scale and applying a load of 125 Kgf was utilized. At a protective gas flow rate of 8 L/min, the average tensile stress was 44.72 N/mm², strain was 0.177, modulus of elasticity was 2518 MPa, and hardness was 99.712 HBW. Increasing the gas flow rate to 13 L/min resulted in an average tensile stress of 47.50 N/mm², strain of 0.189, elastic modulus of 2525 MPa, and hardness of 105.522 HBW. Further increasing the gas flow rate to 18 L/min led to an average tensile stress of 49.69 N/mm², strain of 0.192, modulus of elasticity of 2597 MPa, and hardness of 106.704 HBW. Based on the research findings, it was observed that the weld area exhibited an increase in hardness values due to the heat generated during the welding process. The use of protective gas flow during welding is deemed effective in producing well-formed welded joints, as it prevents fractures from occurring within the weld area during the tensile test process. The choice of protective gas is determined by the dimensions of the material plate.
ANALISIS VON-MISES STRESS, STRAIN, DAN TOTAL DEFORMASI PADA PELAT IMPLAN METATARSOPHALANGEAL (MTP) DENGAN MATERIAL TI-6AL-4V MENGGUNAKAN FINITE ELEMENT METHOD Muhammad Nuzan Rizki; Ahmad Fikri; Faisal Faisal; Rizki Aulia Nanda
Jurnal Teknologi Kimia Unimal Vol 12, No 2 (2023): Jurnal Teknologi Kimia Unimal - Nopember 2023
Publisher : Chemical Engineering Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/jtku.v12i2.12971

Abstract

Salah satu penyebab fraktur pada tulang ialah kecelakan pada saat beraktifitas maupun berkendara. Penggunaan pelat implan metatarsophalangeal (MTP) menjadi satu dari berbagai macam metode penanganan fraktur pada tulang. Maka penting untuk mengetahui kemampuan pelat implan dalam menahan segala jenis pembebanan yang mungkin terjadi saat digunakan di tubuh manusia. metode yang digunakan untuk menganalisis kekuatan struktur pelat implan MTP ini adalah dengan menggunakan finite element method. Terdapat tiga tahapan dalam metode ini. Tahapan pertama adalah preprocessing, jenis material dan jenis meshing ditentukan pada tahapan ini. Lalu tahap solution, yaitu penentuan jenis pembebanan dan constraint  yang digunakan. Terakhir tahapan post processing, yaitu proses analisis hasil simulasi yang dilakukan pada dua tahapan sebelumnya. Pada penelitian ini didapatkan nilai von-mises stress dengan pembebanan 44.228 N hingga 200 N sebesar 51.492 MPa hingga 232.85 MPa. Nilai tersebut masih berada di bawah nilai tegangan luluh material Ti-6Al-4V yakni sebesar 880 MPa. Nilai von-mises stress yang rendah tersebut mengakibatkan deformasi total dan deformasi sumbu Z yang terjadi cukup rendah, rata-rata pada angka 0.0189 mm dan 8,77x10-4 mm. Berdasarkan perolehan nilai tersebut dapat disimpulkan pelat implan MTP dengan material Ti-6Al-4V tidak terjadi deformasi plastis. Deformasi yang terjadi pada  pelat implan MTP adalah deformasi elastis, dengan nilai yang cukup rendah. Sehingga aman digunakan sebagai salah satu alat bantu dalam proses penyembuhan fraktur pada tulang MTP.
The Influence Of Work Surface Roughness Caused By Fraising Machined With HSS Chies Aljufri, Aljufri; Rizki, Muhammad Nuzan; Akmal, Syarifah; Mutia, Sri; Rambe, Farhan Wafi
Journal of Applied Sciences and Advanced Technology Vol 6, No 2 (2023): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jasat.6.2.49-56

Abstract

The development of production techniques is required to produce good products that have standards for the products produced, both in terms of profile shape, size precision, surface roughness, hardness, material flexibility, and others that comply with standards. The surface roughness of a product can affect its functions, such as its level of precision and ability to accept loads. This research aims to find out how much influence cutting speed and depth of cut have on surface roughness with variations in cutting speed parameters of 21 meters/minute and 26 meters/minute and for AISI 4140 steel cutting speed parameters of 12 meters/minute and 17 meters/minute and cutting depths of 0.1 mm and 0.3 mm on four types of steel with End Mill cutting blades made from High-Speed Steel with a total of 4 flute cutting blades. Next, surface roughness testing and analysis of variance were carried out to determine the influence of parameters on surface roughness. The results obtained were that the largest average surface roughness, namely Ra = 5.33 µm, occurred on AISI 4140 steel at a cutting speed of 12 m/min with a cutting depth of 0.3 mm. Meanwhile, the smallest average surface roughness, namely Ra = 0.91 µm, occurred on AISI 1045 steel at a cutting speed of 21 m/min with a cutting depth of 0.1 mm. Next, an analysis of the variance method was also carried out with the following results: cutting speed only affected S45C steel because the value of Fcount>Ftable (13.18107506 > 5.32). The depth of cut does not have a significant effect on surface roughness on all types of steel because of the comparison results Fcount<Ftable. The interaction of cutting speed and cutting depth does not affect surface roughness because the comparison shows that Fcount <Ftable for all types of steel.
Pengaruh Variasi Campuran Bahan Bakar Oli Bekas (used oil) dan Minyak Jelantah Terhadap Unjuk Kerja Kompor (burner) Pranata, Tri Agung; Sayuthi, Muhammad; Amani, Yasir; Faisal, F; Rizki, Muhammad Nuzan
Malikussaleh Journal of Mechanical Science and Technology Vol 8, No 1 (2024): Malikussaleh Journal of Mechanical Science and Technology
Publisher : Malikussaleh University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/mjmst.v8i1.16970

Abstract

As the era progresses, conventional fuel becomes more expensive This causes people to experience fuel difficulties daily cooking needs due to economic shortages. hence the used oil and used cooking oil is an alternative energy. but oil is needed special treatment so that it can be used as fuel. make an alternative stove fueled by economical used oil could be the solution. Method Experimental is a quantitative method used to determine variables independent (treatment) to the influence of the dependent variable (outcome) in the condition which is under control. The research uses three variables, namely the independent variable, fixed variable and dependent variable. which is where testing is carried out with water boiling test method. The fastest start-up time data is obtained by the material Burn used cooking oil in 5 minutes and take the longest to get oil used with a time of 6 minutes. shortest boiling time obtained used cooking oil, namely 5.28 minutes. and for thermal data efficiency for each material burn ranges from 14% to 26%. fuel consumption ranges from 0.526kg to 0.615kg. The boiling point of water is 99.93℃. From the variations of the three fuels used in testing, namely used oil, used cooking oil, and used oil with mixture of used cooking oil, used cooking oil is a type of fuel the most optimal with a thermal efficiency value of 26%, fuel consumption 0.615 kg/hour. better match the blower speed to the nozzle hole.
Analysis of tensile strength of composite fiber reinforced with areca Nut Skin Fiber using BQTN 157 EX Resin Safriwardy, Ferri; Rizki, Muhammad Nuzan; Masrullita, Masrullita; Simbolon, Muhammad Iqbal
International Journal of Trends in Mathematics Education Research Vol 6, No 4 (2023)
Publisher : SAINTIS Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33122/ijtmer.v6i4.284

Abstract

In the development of materials science, especially polymers, natural fibers such as areca nut shell fiber are increasingly attractive to use. The use of synthetic polymer materials made from fiber can replace conventional materials such as metal, wood and leather. They can replace conventional materials with the advantages of lower price, environmental friendliness, and recyclability. Areca nut shell fiber, as an example of a natural fiber, has great potential in the furniture industry, crafts, and as an ingredient in traditional medicine. This fiber is used as a reinforcing material in composites with an Unsaturated Polyester Yukalac resin matrix. Unsaturated Polyester Yukalac resin, with characteristics such as stiffness, flexibility, water resistance, chemical resistance and weather resistance, is used as a matrix in making composites. The aim of this research is to make a plastic composite prototype reinforced with areca palm fiber, varying the volume fraction of areca nut shell fiber by 30%:50%, 50%:60%, 70%:70%, 90%:80% and for the matrix using polyester resin. BQTN 157 EX. The fiber composition is arranged in a mold in the same direction using the hand lay up method. Composite testing is in the form of a tensile test referring to the ASTM 638-03 standard. The results of the largest tensile testing process were with a volume fraction of 50% with an average value of 7.11 MPa, and for tensile testing the lowest was a volume fraction of 70% with an average value of 6.17 MPa, it can be concluded for reinforced plastic composites Areca nut shell fiber has considerable ability to be applied as a structural material. This is a step towards the development of innovative and environmentally friendly composite materials for various industrial applications.
Sosialisasi K3 (Keselamatan dan Kesehatan Kerja) di Miing Bengkel Cunda Rizki, Muhammad Nuzan; Safriwardy, Ferri; Masrullita, Masrullita; Zulmiardi, Zulmiardi; Habibi, Muhammad; Nurlaila, Rizka
Jurnal Malikussaleh Mengabdi Vol 2, No 2 (2023): Jurnal Malikussaleh Mengabdi, Oktober 2023
Publisher : LPPM Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/jmm.v2i2.12994

Abstract

Peningkatan jumlah kendaraan bermotor di Indonesia, terutama mobil, telah mendorong kebutuhan akan bengkel perawatan kendaraan. Namun, lingkungan kerja di bengkel mobil memiliki potensi risiko tinggi terhadap kecelakaan dan kesehatan pekerja. Sosialisasi Keselamatan dan Kesehatan Kerja (K3) bertujuan untuk melindungi karyawan bengkel dengan meningkatkan kesadaran tentang bahaya potensial dan langkah-langkah pencegahan. Melalui sosialisasi K3, budaya keselamatan dan kesehatan dapat dikembangkan di bengkel, menciptakan lingkungan kerja yang lebih aman dan sehat. Sosialisasi ini juga memberikan kesempatan untuk meningkatkan pengetahuan karyawan tentang risiko potensial dan cara menerapkan K3, yang dapat mengurangi biaya perawatan dan pemeliharaan mesin. Kegiatan ini diharapkan akan menciptakan lingkungan kerja yang lebih produktif dan berkelanjutan di bengkel kendaraan. Dari hasil sosialisasi K3 di Miing Bengkel dapat dilihat bahwa terjadi peningkatan yang cukup signifikan terhadap pemahaman peserta sosialisasi. Sehingga dapat disimpulkan bahwa kegiatan sosialisasi ini memiliki dampak yang sangat besar untuk meningkatkan pemahaman peserta dalam penerapan K3 di lingkungan bengkel. Jika peserta memiliki tingkat pemahaman yang baik/tinggi terhadap pentingnya penerapan K3 saat bekerja, maka dapat meminimalisir terciptanya kondisi tidak aman saat bekerja sehingga dapat menurunkan angka kecelakaan kerja di lingkungan bengkel. Oleh karena itu, kegiatan sosialisasi ini direncanakan akan terus dilakukan dan dikembangkan, agar cakupan peserta semakin banyak.  Sehingga akan membantu masyarakat untuk meningkatkan standar keselamatan dan Kesehatan kerja dalam berkegiatan sehari-hari.
Analisis Kekuatan Tarik Komposit Serat Daun Nanas Dengan Variasi Fraksi Volume Menggunakan Resin Polyester Bening Zahra, Fatimah; Safriwardy, Ferri; Habibi, Muhammad; Zulmiardi, Zulmiardi; Rizki, Muhammad Nuzan
Malikussaleh Journal of Mechanical Science and Technology Vol 8, No 2 (2024): Malikussaleh Journal of Mechanical Science and Technology
Publisher : Malikussaleh University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/mjmst.v8i2.19658

Abstract

Pemanfaatan serat daun nanas masih tergolong sedikit hanya dimanfaatkan sebagai bahan dasar berbagai jenis produk furniture, kain untuk produk fasion, kerajinan dan komposit sebagai material pembentuk. Penelitian ini bertujuan untuk menganalisis kekuatan Tarik komposit serat daun nanas dengan variasi fraksi volume menggunakan resin poliyester bening. Dalam penelitian ini dilakukan pembuatan komposit dengan menggunakan tiga fraksi volume yang berbeda yaitu 60% serat : 40% resin, 70% serat : 30% resin, dan 85% serat : 15% resin. Setelah proses pembuatan spesimen pengujian, kemudian spesimen dilakukan pengujian uji tarik pada setiap fraksi volume. Hasil penelitian ini menunjukkan adanya variasi kekuatan tarik pada setiap fraksi volume yang digunakan, yang mana dengan menggunakan fraksi volume 85% serat : 15% resin menghasilkan kekuatan tarik yang lebih tinggi dibandingkan dengan fraksi volume 60% serat : 40% resin dan 70% serat : 30% resin. Komposit yang diperkuat serat daun nanas dengan variasi fraksi volume serat daun nanas 60% : resin 40%, serat daun nanas 70% : resin 30%, dan serat daun nanas 85% : resin 15%. Dari variasi persentase tersebut yang memiliki kekuatan tarik tertinggi pada serat daun nanas 85% : resin 15% dengan nilai rata-rata sebesar 105,694 MPa, kekuatan modulus elastisitas 1576 MPa, dan elongation yaitu 6,74%. Sedangkan nilai kekuatan tarik terendah terdapat pada serat daun nanas 60% : resin 40% , dengan nilai rata-rata sebesar 74,30 MPa,kekuatan modulus elastisitas 1231 MPa, dan elongationi 6,04%, maka dapat disimpulkan bahwa semakin banyak persentase serat maka semakin tinggi nilai kekuatan tarik. Variasi fraksi volume serat daun nanas dapat mempengaruhi sifat mekanik komposit resin polyester bening. Nilai kekuatan komposit naik sering bertambahnya fraksi volume serat. Namun fraksi volume serat yang tinggi tidak selalu memberikan pengaruh yang baik terhadap kekuatan komposit. Kekuatan komposit tidak hanya dipengaruhi oleh jumlah serat tetapi juga dipengaruhi oleh faktor pengikat yaitu matrik.