Article Per Year (5 Year)
p-Index From 2021 - 2026
9.944
P-Index
This Author published in this journals
All Journal INVOTEK: Jurnal Inovasi Vokasional dan Teknologi Martabe : Jurnal Pengabdian Kepada Masyarakat JURNAL PENDIDIKAN TAMBUSAI Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Jurnal Pengabdian Masyarakat Multidisiplin Teknomekanik Jurnal Vokasi Mekanika Tsaqofah: Jurnal Penelitian Guru Indonesia ALSYS : Jurnal Keislaman dan Ilmu Pendidikan MASALIQ: Jurnal Pendidikan dan Sains Al-DYAS : Jurnal Inovasi dan Pengabdian kepada Masyarakat Journal of Engineering Researcher and Lecturer Journal of Innovative and Creativity Journal of Exploratory Dynamic Problems
Zainal Abadi
Universitas Negeri Padang
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Public Health Social Sciences Transportation Other

Published : 75 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 75 Documents
Search

 1   2   3   4   5 
Analysis Variations of Riser in Sand Casting for Scrap Aluminum on Hardness Values Zainal Abadi; Andre Kurniawan; Andril Arafat; Nur Ichsan Abdillah; Daffa Raihan Senthot
invotek Vol 21 No 3 (2021): INVOTEK: Jurnal Inovasi Vokasional dan Teknologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/invotek.v21i3.940

Abstract

Abstract In this study, we will discuss the process of casting used aluminum metal. Used aluminum is one of the industrial wastes that can be converted into products using the casting method. This study aims to obtain a good casting material with good hardness values ​​and minimal defects. The research will focus on the results of castings by analyzing the visuals and hardness values ​​of the specimens. The research design is a pre-experimental type of One-Shot Case Study by conducting treatments whose results will be directly observed and analyzed descriptively. The treatment given is to increase the number of risers in recycled aluminum castings. Variations in the number of risers are 1 riser, 2 riser, and 3 riser. Each variation has 3 specimens, so there are 9 specimens in the study. The data from the test results contained a fairly large porosity value for each riser variation. The hardness value that has been tested using the Rockwell hardness tester obtained the highest hardness value occurs in the 2 riser variation, namely 27.69 HRA and the lowest hardness value occurs in the 3 riser variation, namely 21.56 HRA. Thus, for casting used aluminum with a casting pattern as in this study, it is best to use 2 risers.
PENGARUH TEMPERATUR DAN KELEMBABAN UDARA TERHADAP LAJU KOROSI PADA BAJA ST 37 Rahmad Robby Alzam; Arwizet K; Hendri Nurdin; Zainal Abadi
Jurnal Vokasi Mekanika (VoMek) Vol 3 No 1 (2021): Jurnal Vokasi Mekanika
Publisher : Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (457.411 KB) | DOI: 10.24036/vomek.v3i1.190

Abstract

Korosi merupakan penurunan mutu logam akibat reaksi elektrokimia dengan lingkungan. Masalah yang timbul akibat korosi adalah perubahan bentuk pada baja akibat terkena pengaruh lingkungan berupa kelembaban air laut, temperatur udara, dan larutan zat garam. Tujuan penelitian ini untuk melihat pengaruh temperatur dan kelembaban terhadap laju korosi pada Baja ST 37. Jenis penelitian yang digunakan yaitu metode penelitian eksperimen. Pelaksanaan pengujian dilakukan dengan cara pengukuran dan pemotongan bahan, pembersihan spesimen uji, pengukuran awal, pengujian spesimen, pembersihan korosi, pengukuran akhir, perhitungan laju korosi, menganalisa dan membuat kesimpulan. Hasil penelitian menunjukkan bahwa temperatur udara, kelembaban udara, dan kandunan zat amoniak sangat berpengaruh terhadap pertumbuhan laju korosi pada baja ST 37 yaitu dapat kita lihat pada temperatur udara berbeda yaitu temperatur udara terbuka bebas lebih tinggi tingkat laju korosinya dibandingkan dengan temperatur udara terbuka terlindungi. Proses terjadinya pertumbuhan laju korosi pada baja ST 37 sangat dipengaruhi oleh kandungan larutan suatu zat, yaitu larutan zat amoniak. Faktor lain yang dapat mempengaruhi proses terjadinya pertumbuhan laju korosi yaitu waktu. Waktu penelitian menjadi penentu tingkat korosi suatu benda. Semakin lama waktu penelitian semakin tinggi tingkat korosinya dan begitu sebaliknya. Penggunaan jenis logam pada lingkungan tertentu harus sangat diperhatikan. Jika pada lingkungan tertentu yang memiliki sifat korosi tinggi maka harus diperhatikan jenis material yang akan digunakan.
WORKSHOP TEKNOLOGI 3D PRINTING BAGI GURU KEJURUAN DI SMK NEGERI 1 BATIPUH Rifelino Rifelino; Eko Indrawan; Zainal Abadi
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 5, No 4 (2022): Martabe : Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v5i4.1560-1566

Abstract

Additive Manufacturing adalah salah satu teknologi yang sedang berkembang untuk membuat produk-produk prototipe dengan memanfaatkan badan aditif tertentu. Fused Deposition Modelling merupakan jenis mesin 3D printing yang populer dengan menggunakan filamen PLA (polylactid acid) atau ABS (acrylonitrile butadiene styrene) sebagai bahan tambahan untuk membuat objek dalam bentuk 3 dimensi. Teknologi ini sangat berguna dalam membuat media pembelajaran purwarupa bagi siswa di sekolah kejuruan. Workshop pengenalan teknologi ini serta prosedur operasionalnya diperkenalkan kepada bagi guru-guru kejuruan di SMK Negeri 1 Batipuh, Kabupaten Tanah Datar, Sumatera Barat. Tahapan dimulai dengan desain objek 3 dimensi menggunakan aplikasi CAD (Computer Aided Design), selanjutnya pengaturan parameter cetak pada perangkat lunak slicer CURA dan finalisasi proses cetak pada mesin 3D printing. Hasil cetak berupa prototype kombinasi roda gigi dan objek label nama sekolah dihasilkan pada sesi akhir pelatihan. Dengan prosedur yang tepat dan kombinasi kreatifitas desain objek, alat ini mampu memberikan alternatif solusi dalam menciptakan media-media pembelajaran purwarupa bagi guru dan siswa di sekolah.
DAMPAK PELAKSANAAN PRAKERIN TERHADAP PSIKOMOTORIK SISWA PASCA PEMBELAJARAN DARING DI SMK NEGERI 2 SUNGAI PENUH Teki Haryono; Budi Syahri; Yolli Fernanda; Zainal Abadi
Jurnal Vokasi Mekanika (VoMek) Vol 5 No 1 (2023): Jurnal Vokasi Mekanika
Publisher : Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/vomek.v5i1.491

Abstract

Pendidikan merupakan komponen penting dalam keberhasilan suatu bangsa. Lembaga pendidikan formal yang dikenal dengan pendidikan menengah kejuruan bertujuan untuk membekali lulusannya yang berkualitas dan berkompetensi di bidang keahliannya yang diperlukan untuk sukses di dunia kerja setelah lulus. SMK tidak hanya memberikan materi teori dan praktek di sekolah, tetapi juga memberikan pengalaman kerja. Salah satu inovasi yang digunakan oleh SMK adalah sistem pelatihan atau yang dikenal dengan Praktek Kerja Industri (Prakerin). Namun, sebelum siswa melaksanakan prakerin siswa dihadapkan dengan Covid-19 yang mana proses belajar mengajar harus dilaksanakan secara daring. Singkronisasi pembelajaran praktik di sekolah dengan yang ada di industri juga blum maksimal. Penelitian ini bertujuan untuk mengetahui dampak pelaksanaan prakerin terhadap psikomotorik siswa pasca pembelajaran daring di SMK Negeri 2 Sungai Penuh. Sampel pada penelitian terdiri 5 orang di lapangan tempat peserta didik melakukan magang. Pengambilan data dilakukan dengan membagikan kuesioner kepada industri dan mewawancarai orang-orang di industri. Dalam penelitian ini menggunakan metode kuantitatif. Sementara itu untuk mengolah data memakai dua analisis yaitu analisis deskriptif dan persentase. Menurut hasil penelitian analisis deskriptif didapatkan mean 19, median 18, mode 2, standard deviasi 5.2, range 12, minimum 14, maximum 26, sum 96. Analisis persentase menunjukkan bahwa siswa masih memiliki kendala pada aspek psikomotorik pada saat melaksanakan prakerin. Berdasarkan dari hasil analisis deskriptif dan analisis persentase dapat disimpulkan terdapat dampak mata pelajaran praktikum yang dilaksanakan secara daring terhadap psikomotorik siswa saat pelaksanaan prakerin.
HUBUNGAN NILAI PRAKTIK KERJA INDUSTRI PADA MINAT DAN SIKAP BELAJAR PESERTA DIDIK Rifaldo Novembli; Bulkia Rahim; Rifelino Rifelino; Zainal Abadi
Jurnal Vokasi Mekanika (VoMek) Vol 5 No 3 (2023): Jurnal Vokasi Mekanika
Publisher : Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/vomek.v5i3.572

Abstract

Minat dan sikap belajar sangat berpengaruh dalam pelaksanaan proses pembelajaran. Pengalaman baik yang diperoleh peserta didik dalam melakukan kerja praktek industri akan mempengaruhi minat belajarnya dan sikap dalam belajar. Praktik kerja industri mengharuskan sekolah dapat menyesuaikan pembelajaran, meningkatkan kemampuan, guna untuk mempersiapkan diri dalam memasuki dunia industri. Tujuan dilakukannya penelitian ini ialah untuk mengukur seberapa besar hubungan terdapat dari nilai praktik kerja industri dengan minat belajar dan sikap belajar siswa. Subjek penelitian ini ialah siswa SMKN 1 Padang yang sudah melaksanakan Prakerin pada semester ganjil pada Jurusan Teknik Pemesinan dengan sampel 39 siswa, Teknik Kendaraan Ringan Otomotif dengan sampel 43 siswa, Teknik Audiovideo dengan sampel 35 siswa, sehingga total jumlah sampel yaitu 117 siswa. Penelitian ini dilaksanakan pada semester genap Januari-Juni 2023. Instrumen penelitian menggunakan angket yang diberikan kepada siswa. Penelitian memakai proportional random sampling technique. Hasil penelitian menggambarkan hubungan yang baik antar nilai Prakerin dengan minat belajar di SMKN 1 Padang yaitu sebesar 8,1%, terdapat hubungan yang baik antar Nilai Prakerin dengan sikap belajar peserta didik pada SMKN 1 Padang yaitu sebesar 9,3%, dan memiliki hubungan yang berkaitan satu sama lain pada nilai Praktek Kerja Industri dengan sikap dan minat belajar peserta didik di SMKN 1 Padang yaitu 11,6%. Penelitian ini membuktikan bahwa praktik kerja industri memberikan dampak yang positif kepada siswa dalam meningkatkan minat belajar dan sikap belajar siswa yang diukur melalui nilai praktik kerja industry. Hal ini dibuktikan dari hasil penelitian yang memiliki nilai positif.
Study of the effective fraction of areca nut husk fibre composites based on mechanical properties Akbar, Irfan Muhammad; Fauza, Anna Niska; Abadi, Zainal; Rahmadiawan, Dieter
Journal of Engineering Researcher and Lecturer Vol. 3 No. 1 (2024): Regular Issue
Publisher : Researcher and Lecturer Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58712/jerel.v3i1.126

Abstract

Areca nut husk fibers have the potential to be used as reinforcement in polymer composites as a substitute for synthetic fibres. In the manufacture of fibre composites, one of the important factors in determining the strength is the matrix to fibre ratio. This study aims to determine the effective ratio or fraction between areca nut husk fibre and orthophthalic polyester resin. Before using areca nut husk fibre, it was chemically treated so that only cellulose remained in the fibre. The areca nut husk fibre was processed into sheets. The composite was manufactured using the hand lay-up technique. Tensile and flexural tests were carried out to determine the mechanical properties. Based on the results of the tests conducted, there are differences in the mechanical properties of the composites. The tensile test results show that the 40% fibre fraction has the highest tensile strength and modulus values. On the other hand, in the flexure tests, the highest tensile strength and modulus values are found in the 30% fibre fraction.
Analysis and control of occupational safety risks using the HIRARC method in the Machining Workshop Anwar, Roki Putra; Kurniawan, Andre; Mulianti; Abadi, Zainal
Journal of Engineering Researcher and Lecturer Vol. 3 No. 2 (2024): Regular Issue
Publisher : Researcher and Lecturer Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58712/jerel.v3i2.142

Abstract

This qualitative study focuses on occupational safety and health in vocational school machining workshops to identify significant risks related to training practices. Workplace accidents are considered a serious threat to workers and equipment, potentially affecting productivity and environmental safety. Observations at several vocational schools, especially at SMK Negeri 1 Batipuh, showed low student awareness and compliance with OHS regulations, increasing the risk of risky behaviour and accidents. To address this, the research used the Hazard Identification, Risk Assessment, and Risk Control (HIRARC) method, which systematically identifies hazards, evaluates risks based on severity and likelihood, and proposes control measures. The research at SMK Negeri 1 Batipuh involved direct observation, interviews, and analysis of SOPs in the workshop, finding significant risk variations in workshop conditions, lathe operations, welding, material handling, hand tool use, and machine protection. The results highlighted the predominance of intermediate risks in all-hazards analyzed, emphasizing the importance of developing more effective risk management strategies. This research aims to reduce accidents and improve student safety during training by addressing existing OHS implementation gaps and implementing appropriate risk controls. In addition to filling a gap in the literature, this study provides practical insights for improving OHS practices in vocational schools.
The Optimization of Building Energy Consumption in Universitas Negeri Padang Using Building Energy Simulation Program Kurniawan, Andre; Qosim, Nanang; Lapisa, Remon; Abadi, Zainal; Jasman, Jasman
Teknomekanik Vol. 4 No. 1 (2021): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (296.064 KB) | DOI: 10.24036/teknomekanik.v4i1.9672

Abstract

Energy consumption of a building is one of the biggest sources of energy use today. Green Building Comitte Indonesia (GBCI) has launched a concept of energy consumption saving in a nationally standard building. Audit Building energy audit is the way to know how actual building energy consumption is and find alternative solution to decrease energy consumption in order to fulfill the energy saving building criteria. Two types of HVAC systems will be run in the EnergyPlus simulation, split AC and central AC. The previous research proved that central AC is better than split AC system for energy saving in the building with 20 floors. The simulation results show that by using a certain energy system, a more efficient energy system will be achieved and can still maintain the comfort of the room at a temperature of 24 °C and relative humidity according to the Green Building Indonesia standard reference.
Implementasi Pembelajaran Berbasis Proyek terhadap Hasil Belajar Siswa pada Pembelajaran Mesin Bubut Pratama, Yuhanda Dicky; Indrawan, Eko; Refelino, Refelino; Abadi, Zainal
MASALIQ Vol 4 No 1 (2024): MASALIQ: Jurnal Pendidikan dan Sains
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v4i1.2110

Abstract

This study aims to analyze the project-based learning model on learning outcomes in class XI lathe subjects majoring in Mechanical Engineering SMK Negeri 1 Tanjung Raya. The type of research that the authors conducted was Quasi Experimental Design (pseudo / quasi experiment) research. The experimental research design used in this study was in the form of nonequivalent control group desaign. This study uses pre-test and post-test tests to students to see students' understanding before and after using the learning model, whether there is a good enough improvement after applying the learning model. Based on the results of research and discussion, Quasi-Experiment research in the subject of Lathe Machining Engineering class XI Machining Engineering SMK Negeri 1 Tanjung Raya can be concluded as follows. First, the project-based learning model in the experimental class in the Lathe Machining Engineering subject was successfully implemented in class XI of the Machining Engineering of SMK Negeri 1 Tanjung Raya. Second, student learning outcomes The acquisition of this final score increased from the previous average score of 53. Third, the skills and creativity of students in the subject of Lathe Machining Engineering Class XI Machining Engineering SMK Negeri 1 Tanjung Raya, carried out using a psychomotor assessment rubric and obtained an average score in the control class of 74 and the experimental class of 80.
Rancang Bangun dan Analisis Kinerja Turbin Angin Sumbu Vertikal Modifikasi Menggunakan Empat Buah Blade Habibie, Habibie; Lapisa, Remon; Irzal, Irzal; Abadi, Zainal
MASALIQ Vol 4 No 1 (2024): MASALIQ: Jurnal Pendidikan dan Sains
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v4i1.2668

Abstract

The island country is a characteristic of Indonesia, and is located right on the equator stretching from the island of Sumatra to the island of West Papua. The need for electrical energy is increasing, but the energy generally used to produce electrical energy is fossil energy, and the problem faced by most countries, including Indonesia, is the problem of energy reduction. According to the International Energy Agency (IEA), the electricity needed is 14 terawatts per day, arguably the equivalent of 210 million barrels of oil. The objectives of this research are (1) to design a wind turbine using fiberglass as the basic material, (2) to make a turbine that can utilize wind energy for electricity generation purposes, and (3) to determine the performance of a modified 4-blade vertical wind turbine on the power it produces. can be generated. The type of research carried out uses experimental methods. The test results show that wind turbines made from fiberglass are able to achieve wind turbine efficiency of 50.7%. The conclusion drawn is that the researchers succeeded in designing a wind turbine from fiberglass as the basic material, the wind turbine can rotate properly and can produce electricity. The generator power produced increases as the wind speed increases. A wind turbine using 4 blades at a wind speed of 21.6 m/s, produces a rotation per minute of 250.6 rpm, produces 108.20 watts and a torque of 107.14 Nm.
Co-Authors - Primawati Abrar Rizki Ramadhan Afriza Media Ahlal Fikri, Rivandy Ahmad Rizaldi Akbar, Irfan Muhammad Alan Putra Ambyar Ambyar Ananda, Opi Andre Kurniawan Andre Kurniawan Andri, Junil Andrian Saputra Angga Hermawansyah Anggara, Diki Anwar, Roki Putra Arafat, Andril Arif Rachman Hakim Arifin Jannuar Arwizet Arwizet, Arwizet Aslfattahi, Navid Berry Delfi Andra Budi Syahri Bulkia Rahim Daffa Raihan Senthot Delima Yanti Sari Dicky Pratama Fernando Dori Yuvenda Eko Indrawan Enggian Lubis Fathur Rahman fatur Rahman, fatur Fauza, Anna Niska Febri Prasetya Fiki Efendi Fikriyyah Hilmy Ardana Firdaus Firdaus Fitra, Dinul Fonny Maswija Priscilla Gifan Ainul Mukhrim Gilang Sanjaya Habib Indra Satrianto Habibie Habibie Hafizd Syahiran nst Hakiim, Evan Ibnu Hafiz Wardhana Imam Qulugqin Azhim Indra, Yoan Alfarezy Irma Yulia Basri Irzal Irzal Irzal Irzal Irzal, Irzal Jasman Jasman Jasman Kurniawan, Muhammad Ridwan M. William Akbar Miswar Miswar Muhammad Aulia Anugrah Muhammad Iqbal Muhammad Iqrha Muhammad Pandi Saputra Muhammad Riski Hidayat Muhammad Subakti Muharam, Bananda Mulianti Mulianti Mulyanti Mulyanti Mustaqin, Iqbal Nabawi, Rahmat Azis Nanang Qosim Nelvi Erizon Nensy Aryasandy Nofri Pratama Putra Nur Ichsan Abdillah Nurdin Hendri Pratama, Yuhanda Dicky Primawati Primawati, Primawati purwantono purwantono Purwantono Purwantono Putra, Kevinda Putra, Rido Rahmad Robby Alzam Rahmadiawan, Dieter Rahmat Mardiansyah Putra Rahmatul Fauzan Mulyadi Rahmatul Ghozali Ramadhan, Athaya Ramadhan, Qadri Randi Purnama Putra Refdinal, Refdinal Refelino, Refelino Remon Lapisa Ressi Novia Windri Rifai Adlani, M. Rifaldo Novembli Rifelino Rifelino Rifelino Rifelino Rifelino Riki Ardianto Rilgy Aulia Rizky Ema Wulansari Rozaki Yudha, Hatami Salwa Chairani Santos, Thiago F. Shi, Shih-Chen Susi Marisa Syahril Syahril Syahril Syaputra, Afzan Syauqi Arjunanda Tasyah Tasyah Taufiqul Hamid Teki Haryono Wahyu Ivan Pramana Wahyu Pratama Wahyudi Wahyudi Wanda Afnison Waskito Waskito Waskito Waskito Waskito, Waskito yahril yahril Yandi Saputra Yolli Fernanda Yopi Zekri Jenizah Putra Yopi Zekrri Jenizah Putra Yufrizal Yufrizal Yufrizal Yufrizal, Yufrizal Zhuang, Wei-Ting