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All Journal Jurnal Pendidikan Teknologi dan Kejuruan Rekayasa Mesin JOIV : International Journal on Informatics Visualization INVOTEK: Jurnal Inovasi Vokasional dan Teknologi Jurnal Penelitian Pendidikan IPA (JPPIPA) JURNAL PENDIDIKAN TAMBUSAI JETL (Journal Of Education, Teaching and Learning) Jurnal Teknik Mesin Jurnal Teknologi Informasi dan Pendidikan Jurnal Vokasi MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Reswara: Jurnal Pengabdian Kepada Masyarakat Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat SELODANG MAYANG Teknomekanik Multicience International Journal of Multidisciplinary Research and Literature (IJOMRAL) Jurnal Vokasi Mekanika Journal of Social And Economics Research Journal of Community Service Tsaqofah: Jurnal Penelitian Guru Indonesia CONSEN: Indonesian Journal of Community Services and Engagement Jurnal Aplikasi IPTEK Indonesia Al-DYAS : Jurnal Inovasi dan Pengabdian kepada Masyarakat Journal of Engineering Researcher and Lecturer Ranah Research : Journal of Multidisciplinary Research and Development International Journal of Multidisciplinary Research of Higher Education (IJMURHICA) Journal of Innovative and Creativity IJIMCE : International Journal of Innovation in Mechanical Construction and Energy Venus: Jurnal Publikasi Rumpun Ilmu Teknik Jurnal Sains dan Teknologi Jurnal Pendidikan MIPA IJIS Edu : Indonesian Journal of Integrated Science Education JRTI (Jurnal Riset Tindakan Indonesia) Journal of Educational and Learning Studies
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Pengaruh Variasi Side Clearance Angle Pahat HSS dan Variasi Jumlah Putaran Mesin Bubut Terhadap Kekasaran Permukaan Benda Kerja Hasil Pembubutan Rata Pada Bahan St-60 Ade Habibbullah; Arwizet K; Suparno; Yufrizal A
Ranah Research : Journal of Multidisciplinary Research and Development Vol. 2 No. 1 (2019): Ranah Research : Journal Of Multidisciplinary Research and Development (Novembe
Publisher : Dinasti Research

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Abstract

Persaingan dunia industri dalam bidang permesinan khususnya pada mesin bubut yang menghasilkan produk berbentuk poros, seperti penampang roda gigi yang biasanya terbuat dari baja karbon sedang. Baja karbon sedang dikenal dengan unsur kandungan kimia yang memiliki kekuatan bahan yang bagus, dimana proses pembuatannya menggunakan mesin bubut. Tingkat kekasaran permukaan pada proses pembubutan poros dipengarahui oleh beberapa faktor, diantaranya side clearance angle dan jumlah putaran mesin bubut.Penelitian ini menggunakan metode eksperimental yaitu dengan memvariasikan side clearance angle pahat HSS dan variasi jumlah putaran untuk mendapatkan tingkat kekasaran permukaan yang baik pada bahan baja karbon sedang St-60. Pada pengujian ini, proses pengukuran kekasaran permukaan menggunakan alat surface roughness testers. Hasil dari penelitian ini menunjukan, variasi side clearance angle 8⁰ dan jumlah putaran 600rpm mendapatkan tingkat kekasaran paling kecil dengan total nilai Ra 3,97 µm, dapat disimpulkan semakin kecil side clearance angle pahat HSS maka semakin kecil pula Tingkat kekasaran permukaan yang dihasilkan
PENERAPAN METODE BELAJAR DISKUSI BERBANTUAN GOOGLE CLASSROOM UNTUK MENINGKATKAN HASIL BELAJAR GAMBAR TEKNIK MESIN SISWA KELAS X TEKNIK PENGELASAN SMK NEGERI 1 KECAMATAN GUGUAK Asep Bunyamin; Arwizet K; Abd. Aziz; Ambiyar
Ranah Research : Journal of Multidisciplinary Research and Development Vol. 2 No. 1 (2019): Ranah Research : Journal Of Multidisciplinary Research and Development (Novembe
Publisher : Dinasti Research

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Abstract

Penelitian ini dilatar belakangi bahwa masih rendahnya hasil belajar Gambar Teknik Mesin siswa kelas X Teknik Pengelasan SMK Negeri 1 Kecamatan Guguak. Tujuan penelitian ini adalah untuk meningkatkan hasil belajar Gambar Teknik Mesin siswa kelas X Teknik Pengelasan melalui penerapan metode belajar diskusi berbantuan Google Classroom. Penelitian ini merupakan Penelitian Tindakan Kelas (Classroom Action Research). Penelitian ini terdiri dari tiga siklus. Penelitian ini dilaksanakan pada bulan September-Oktober 2019. Subjek penelitian ini adalah siswa kelas X Teknik Pengelasan SMK Negeri 1 Kecamatan Guguak yang berjumlah 32 siswa. Berdasarkan hasil penelitian, rata-rata hasil belajar siswa pada setiap siklus mengalami peningkatan ketuntasan klasikal. Pada siklus I sebesar 56,25%, pada siklus II sebesar 65,625% dan pada siklus III sebesar 81,25%. Dari hasil penelitian ini dapat disimpulkan bahwa metode belajar diskusi berbantuan Google Classroom dapat meningkatkan hasil belajar Gambar Teknik Mesin.
ANALISIS ONGKOS PENDIDIKAN PERGURUAN TINGGI DALAM MENYONGSONG PERGURUAN TINGGI NEGERI MENJADI BHMN Hendra Hendra; Yazmendra Rosa; Arwizet K
Jurnal Teknik Mesin Vol 1 No 2 (2004): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

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Abstract

Cost production in the education is the important. Education Quality influence by performance in personal and facility. The good personal and facility is affecting cost production (education). Height quality education consumption cost produced is more expensive. To cost education can be minimization. with the analyses cost production (education) example calculated overhead, cost operational and etc. Level of this education fare can be applied by paying attention ability of consumer so those process studies stand at bay with quality of good education.
PERANCANGAN METODE MACHINE LEARNING BERBASIS WEB UNTUK PREDIKSI SIFAT MEKANIK ALUMINIUM Desmarita Leni; Arwizet K; Ruzita Sumiati; Haris Haris; Adriansyah Adriansyah
Jurnal Rekayasa Mesin Vol. 14 No. 2 (2023)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v14i2.1370

Abstract

The main objective of this research is to design a web-based machine learning model that can predict the mechanical properties of aluminum based on its chemical composition. By inputting nine variables of chemical elements such as Al, Mg, Zn, Ti, Cu, Mn, Cr, Fe, and Si, the model is able to provide predictions for two output data, Yield Strength (YS) and Tensile Strength (TS). The research aims to understand the relationship between chemical composition and mechanical properties of aluminum, and to develop a tool that can be used to predict these properties with a high level of accuracy. Overall, the goal of this study is to enhance the understanding of the properties of aluminum and how it can be utilized in various applications. This study designs a web-based machine learning modeling to predict the mechanical properties of aluminum in the percentage of chemical composition, where the input data in the modeling consists of 9 variables of chemical elements such as Al, Mg, Zn, Ti, Cu, Mn, Cr, Fe, Si, and has 2 output data consisting of Yield Strength (YS) and Tensile Strength (TS). The modeling machine learning is designed using the Python programming language and additional libraries such as Pandas, Numpy, Scikit-learn, and Streamlit. The modeling in this study uses three algorithms consisting of Decision Trees (DT), Random Forest (RF), and Artificial Neural Network (ANN). Each algorithm is optimized with the best search parameters, and where the RF algorithm has better performance than DT and JST. The best modeling uses the RF algorithm with optimal parameters of number of trees at 20 and maximum depth of 10, with MAE values of 11.44, RMSE of 14.282, and R of 0.93 for Yield Strength (YS) predictions, and for Tensile Strength (TS) predictions, MAE values are obtained. 21,669, RMSE 27,301, and R 0.871. 
Performance Analysis of Hydrokinetic Turbine Using Shroud Ratio Comparison under Yaw Misalignment Condition Arwizet K; Desmarita Leni; Deviya Aprilman; Adriansyah Adriansyah; Rivanol Chadry
invotek Vol 23 No 1 (2023): INVOTEK: Jurnal Inovasi Vokasional dan Teknologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/invotek.v23i1.1091

Abstract

This research aims to analyze the performance of hydrokinetic turbines under yaw misalignment conditions using descriptive statistical methods on coefficient of power (Cp) data. Tests were conducted at water velocities of 0.7, 0.9, and 1.1 m/s for three types of turbine shrouds consisting of turbines without shrouds, turbines with two different types of shrouds, at yaw angles from 0° to 25° with 5° intervals. The study concludes that the performance of each turbine type is significantly influenced by the combination of water flow velocity and yaw angle. The diffuser type has the highest Cp value at every yaw angle, but its performance decreases with increasing yaw angle. The Blade type has poorer performance compared to the diffuser at every yaw angle and has the best performance at a combination of 1.1 m/s velocity and 5° yaw angle. Meanwhile, the shroud type has more stable performance and is not greatly affected by variations in velocity and yaw angle. Based on the analysis of changes in average Cp values with changes in yaw angle at V 0.7 m/s, all three turbine types experienced an increase in Cp value at a yaw angle of 5, with the shroud experiencing the most significant increase. At V 0.9 m/s, the diffuser and shroud types were able to maintain their average Cp values at every yaw angle, while the blade type decreased with increasing yaw angle and experienced a significant decrease at a yaw angle of 25. At V 1.1 m/s, the diffuser and blade types experienced a decrease in performance with every increase in yaw angle, but the shroud type was able to maintain the same Cp value and even experienced a significant increase at a yaw angle of 5.
Analysis of Digital Literacy Technology Design for the Department of Mechanical Engineering Based on a Website at Universitas Muhammadiyah Sumatera Barat Desmarita Leni; Muchlisinalahuddi Muchlisinalahuddi; Riza Muharni; Arwizet K
invotek Vol 23 No 1 (2023): INVOTEK: Jurnal Inovasi Vokasional dan Teknologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/invotek.v23i1.1092

Abstract

This research aims to analyze the level of importance of digital literacy understanding among students of Mechanical Engineering at the University of Muhammadiyah (UM) Sumatera Barat. The digital literacy developed in this study not only facilitates access to learning references, literature, research methodologies, and testing in the field of Mechanical Engineering but also designed as a data storage place for student practical and research testing results. This research used a questionnaire as a data collection technique, which was filled out by Mechanical Engineering students at Universitas Muhammadiyah Sumatera Barat. The first questionnaire was conducted to measure the level of students' understanding of digital literacy in the field of Mechanical Engineering, and the results were used as the basis for creating a literacy website. The second questionnaire was conducted to evaluate the created literacy website. Data analysis was performed using quantitative descriptive analysis. The results showed that 57% of respondents had good understanding of digital literacy in the field of Mechanical Engineering. However, only 15% of respondents often searched for references on digital technology, and 80% of respondents faced difficulties in finding credible digital literacy sources. Moreover, most respondents expressed their interest in learning and using digital technology in research and practical work. These results served as the basis for creating a digital literacy website. The digital literacy website was evaluated, and the evaluation result showed that most respondents stated that the created literacy website was easy to use and helpful in the learning or task completion process. However, some aspects needed improvement, such as relevant and understandable content and the quality of content presentation that is more interesting for respondents. Overall, the literacy website has a high level of satisfaction in several aspects.
Analyzing the Validity of Project-Based Learning Implementation Plans in Light Vehicle maintenance: A Comprehensive Study Muslim Muslim; Ambiyar Ambiyar; Arwizet Karudin; Doni Tri Putra Yanto; Nuzul Hidayat; Ahmad Arif; Toto Sugiarto
invotek Vol 23 No 1 (2023): INVOTEK: Jurnal Inovasi Vokasional dan Teknologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/invotek.v23i1.1112

Abstract

Implementation of the developed Learning Implementation Plan (LIP) will result in the risk of learning not being in line with expectations if the validity of the product is not guaranteed. Thus, this research aims to investigate the validity of developing project-based lesson plans to improve effective learning outcomes. This research is research and development with a quantitative approach using the ADDIE model procedure. To obtain product validity results, the stages used are only in the development phase. The subjects in this research were 2 expert lecturers and 3 productive teachers with expertise in light vehicle engineering, and the instrument used was a feasibility questionnaire. The findings were that the project-based LIP that was developed had an average score of 88.7% in the valid category. This study concludes that it has succeeded in developing a product in the form of a valid and usable project-based lesson plan. Carrying out learning using lesson plans that are integrated with project-based learning can be an alternative to providing more meaningful learning and have a positive impact on student development.
Optimalisasi Pembelajaran Interaktif melalui Pengembangan Modul Ajar Digital Berbasis Flip HTML5 untuk Mata Pelajaran Produktif di Sekolah Menengah Kejuruan Erlanda, Rendi; A, Yufrizal; K, Arwizet; Prasetya, Febri
TSAQOFAH Vol 4 No 2 (2024): MARET
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/tsaqofah.v4i2.2763

Abstract

Vocational education, as a specialised form of education, is designed to prepare students with practical and theoretical skills in various fields of technical, technological, and business expertise, in accordance with the demands of the labour market. The use of teaching modules in the PDTM class X Machining Engineering subject is not optimal, causing the learning process to be less effective. This study aims to develop a FlipHTML5-based PDTM teaching module at SMK Negeri 2 Banda Aceh, adopting the R&D development model with reference to the 4D model. The steps of the 4D model include definition, design, development, and dissemination. Research data were obtained through a questionnaire validation sheet, and data analysis using quantitative descriptive statistical methods with Aiken's V formula. The results showed that the developed module was feasible as a self-learning media. The validity of material experts reached (∑V) 0.842, and media experts reached (∑V) 0.909, with valid criteria. Based on the validity assessment, this PDTM learning module for class X Machining Engineering can be concluded as a feasible additional learning media for students.
PENINGKATAN GAIRAH PERTANIAN PADI DI KENAGARIAN LINGKUANG AUR TIMUR MELALUI INOVASI MESIN PERONTOK PADI SISTEM LORONG HEMBUS Ambiyar; Arwizet K; Mulyanti
Journal of Community Service Vol 5 No 2 (2023): JCS, December 2023
Publisher : Ikatan Dosen Menulis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56670/jcs.v5i2.160

Abstract

Salah satu wilayah di Pasaman Barat yang mayoritas masyarakatnya bertani padi adalah Kenagarian Lingkuang Aur Timur. Para petani padi di Kenagarian Lingkuang Aur Timur masih banyak menghadapi permasalahan-permasalahan dalam penangan padi, terutama pada pasca panen. Dari pemantauan tim pengabdian dan info yang didapatkan dari kelompok tani Boncah Bungo Tanjuang, petani masih kekurangan alat dalam penanganan pada pasca panen, sehingga petani masih banyak melakukan perontokan dengan cara memukulkan padi pada alat yang masih sederhana. Kegiatan yang bersifat konvensional ini menjadikan lambatnya penanganan padi pada pasca penen. Dampak dari keterlambatan penanganan pada pasca panen dapat mengakibatkan susut hasil panen dan menurunnya kualitas gabah. Pelaksanaan pengabdian kepada masyarakat telah dilaksanakan terhadap masyarakat khalayak sasaran. Dalam pelaksanaan tujuan kegiatan telah tercapai. Dari evalusai yang dilakukan telah terjadi peningkatan pengatahuan masyarakat di Kenagarian Lingkuang Aur Timur untuk memanfaatkan teknologi pada penanganan padi pada pasca panen. Peningkatan nilai ekonomis yang dihasilkan diharapkan dapat meningkatkan kesejahteraan masyarakat yang ada di Kenagarian Lingkuang Aur Timur.
THE EFFECT OF TEMPERATURE AND ROASTING TIME ON CHANGES IN THE CHARACTERISTICS AND PHYSICAL PROPERTIES OF SOLOK ARABIKA COFFEE BEANS K, Arwizet.; Leni, Desmarita; Peng, Lim Hooi; Sumiati, Ruzita; Kusuma, Yuda Perdana
International Journal of Multidisciplinary Research and Literature Vol. 3 No. 1 (2024): INTERNATIONAL JOURNAL OF MULTIDISCIPLINARY RESEARCH AND LITERATURE
Publisher : Yayasan Education and Social Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53067/ijomral.v3i1.202

Abstract

High-temperature coffee roasting is a key initiator of the degradation of complex compounds in coffee beans, ultimately producing the desired taste and aroma for coffee enthusiasts. The aim of this research is to explore the influence of temperature and roasting duration on the changes in the mechanical properties of coffee beans using the conduction heat method. In this study, 500 grams of dried Arabica coffee with an initial moisture content of 12% were placed in a roasting apparatus equipped with a roasting machine. The heat source used was a gas stove, where the surface temperature of the roasting chamber was kept constant through a thermocouple temperature measuring device. The roasting process was carried out for 15 minutes at surface temperatures of 160°C, 180°C, 200°C, and 220°C, respectively. The final moisture content for each surface temperature was 3.72%, 3.65%, 2.13%, and 1.81%. Identification of the degree of roasting was conducted through the evaluation of the physical properties of coffee beans, including color, weight loss, moisture content, texture, and bean density. The decrease in hardness and density could be modeled using kinetic equations, while the color change was indicated by a decrease in the L, a, and b values. The research results confirm that roasting temperature significantly impacts the changes in the mechanical properties of coffee beans. The minimum temperature required to achieve satisfactory roasting levels is 180°C, while roasting at 200°C for 15 minutes produces coffee beans with optimal roasting levels. These findings provide new insights into optimizing the coffee roasting process to achieve the desired quality of coffee beans
Co-Authors - Primawati -, Nasrullah - A, Yufrizal Abadi, Zainal Abadi Abbas, Muhammad Rabiu Abd. Aziz Abd. Aziz Abdillah Irfan Abdul Aziz Abdul Habib Arrasyidi Desky Ade Habibbullah Adel Lia Mardiana Adriansyah Adriansyah Afdal Faisal Aggrivina Dwiharzandis Agia Kulkarni Preti Agusriza Almalik Ahmad Arif Ahmad Rifai Sihombing Ahmad, Salamuddin Ahmed, Shabir Akbar, Yaumil Akhmad Rais Aldi Alfarizi Alfarizi, Aldi Alvien Khardin Ambiyar, Ambiyar Amir, Irfan Ananda, Opi Andika Putra ANDIKA SAPUTRA Andre Kurniawan Andre Kurniawan Andre Kurniawan Anjelika, Dea Qori Anuar, Bakri Anugrah, Pinto Aprianti, Maidinda Aqilvin Berliansyah Arafat, Andri Arafat, Andril Arief Juneirul Pratama Ariyanto, Dedi armizal yanriko Aryasandy, Nensy Asep Bunyamin Aulia Rahman Azel Rozandi Azmil Azman Bayu Rianto Berry Delfi Andra Budi Syahri Bulkia Rahim Bunyamin, Asep Butar, David Beckham Butar Carlen Muhammad Hendra Chrismondari, Chrismondari Daniel Fifaldi Nardo Darmawi . Delima Yanti Sari Denisa Putri Jadenis Desmarita Leni Deviya Aprilman Dionova, Aldi Doni Saputra Dori Yuvenda Efendi, Defindo Eko Indrawan Elfizon Endri Rizki Anugrah Erdi, Putri Nurhalimah Erik Ardinata Erizon, Nelvi Erlanda, Rendi Esa Hafizul A Fachrur Rozi Fachry Novrianda Fadhillah Riski Aisyah Nasution Fahrendra, Aqsal Fajri Ramadhan Fakhrur Rozi, Fakhrur Febri Prasetya Felia Maresta Fiqi Gusti Irawan Firman Omni Saputra Fitrah Qalbina Fretina Sari Giatman Gito Okto Rito FM Gusta Nanda Habibbullah, Ade Hadi, Farhan Hafiz Alfadri Ramadhan Haris Haris Hasan Maksum Hasanuddin WS Helga Yermadona Hendra Hendra Idra Putra Ika Parma Dewi Ikhsan Dani Nugraha Ikhsan, Ghufra Irfan Amir Irma Yulia Basri Irzal Irzal Jalil, Muhammad Jasman Jasman Jasman Jimmi Zamora Jonni Mardizal Junil Adri Kandena Putra, Tegar Khairi Habib Khairuni Delfi Anisa Kresna Adi Prasetya Krismadinata Krismadinata Krismadinata Krismadinata Krismadinata Krismadinata, Krismadinata kusuma, Yuda Perdana M. Agus Trian Putra M.Y. Setiawan Martias Martias Mega Risna Monica, Okzalia Muchlisinalahuddi Muchlisinalahuddi Muhammad Akhbar Muhammad Anwar Muhammad Aulia Ifsan Muhammad Bayu Septian Muhammad Ihsan Muhammad Iqbal Muhammad Lathif Mahendra Muhammad, Maghfiridhani Muharir Muharir Muharni, Riza Mulianti Mulyanti Muslim Muslim Nabawi, Rahmat Azis Nadia Utari Nasution, Ridhollah Naufal Nelvi Erizon Nidya Meliza Putri Nizwardi Jalinus Nofri Helmi Nofri Helmi Helmi Nogi Handepi Nurdin Hendri Nurfajri Nurfajri Nurfajri Nurfajri, Nurfajri Nuzul Hidayat, Nuzul Okky Syaifatul, Achmad Oky Erlangga Oky Erlangga Okzama, Rebi OSKAH DAKHI Peng, Lim Hooi Primawati Primawati, Primawati Purnama, Andreadi Purwanto, Wawan Purwantono Purwantono Purwantono Purwantono, Purwantono Putra, Idra Putra, Rido Putra, Romi Putri Nurhalimah Erdi Rahmad Robby Alzam Rahmat Afdhol Rahmat Syukri Ramfit Novari Randhy Alfarishi Rano Hanif Rebi Okzama Refdinal Refdinal Refdinal, Refdinal Refdinal, Refdinal Remon Lapisa Remon Lapisa Remon Lapisa Remon Lapisa Reynaldy Pasaribu Rifelino Rifelino Rio Ramadhan Rivanol Chadry Rizka Rizka Rizka Rizka, Rizka Rizki Agustian Rizki Ramadhan Nasution, Muhammad Rizky Ema Wulansari Robby, Muhammad Robert, Julio Ruzita Sumiati Ryan Ananda Simon Said Fuad Amry Salamuddin Ahmad Seprianto, Ekon Setiawan, Sepdirama Sharma, Jai Kumar Siswahyudianto Soretire Lanrewaju Kamorudeen Sri Rizki Putri Primandari Steven Thomas Anggriyanto Sukardi Sukardi Sukardi, Sukardi Supardi Supardi Suparno Suparno Suparno Syah, Muhammad Rayhan Syukri, Rahmat Toto Sugiarto Totoh Andayono Usin Usin Usmeldi Usmeldi Veri Budiawan Arham Vicky Prasetyo Wahyu Ananda Putra Wahyudi Fachrul Syafra Wakhinuddin WAKHINUDDIN SIMATUPANG Wanda Afnison Waskito Waskito Waskito, Waskito Winaldi Alfonis Wulansari, Rizky Ema Yandra, Muvi Yanto, Doni Tri Putra Yazmendra Rosa Yoga Novrialdy Yolli Fernanda Yovindra, Difa Yufrizal A Yufrizal Yufrizal Yulira Emputri Yurika Putri Zainal Abadi Zainal Abdi Zulvani Adha