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All Journal Jurnal Pendidikan Teknologi dan Kejuruan JPP IPTEK (Jurnal Pengabdian dan Penerapan IPTEK) JURNAL PENDIDIKAN TAMBUSAI Media Manajemen Pendidikan Jurnal Abdi Insani Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Teknomekanik Vocational : Jurnal Inovasi Pendidikan Kejuruan Jurnal Vokasi Mekanika Journal of Community Service Journal of Engineering Researcher and Lecturer Journal of Civil Engineering and Vocational Education
Purwantono, Purwantono
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Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Mechanical Engineering Social Sciences Transportation Other

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The Effect of Cast Iron Preheating on the Microstructure of Welding Results by Using Cin-2 Electrodes Sabirin, Ahmad; Purwantono, Purwantono
Teknomekanik Vol. 3 No. 2 (2020): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (194.392 KB) | DOI: 10.24036/teknomekanik.v3i2.6172

Abstract

Cast iron is commonly found in engineering tools such as machine frames, vise, lathes, planers, pressing tools, V-belt pulleys and others. Cast iron is a metal which is relatively difficult to weld because it contains more than 0.3% carbon. As a matter of fact, a lot of welding workers still experience failure in welding the cast iron, so they require the proper procedures to perform welding on the cast iron like the heat treatment before the welding. This study was aimed at obtaining the effect of preheating variations on the weld joints in which the process of welding the material used the type of open V seam connection. The specimen used was a cast iron with a thickness of 10 mm and the electrode used was the JIS Z 3252 DFCNiFe electrode. The method applied in this research was the microstructure observation testing toward the welding result by using Shielded Metal Arc Welding (SMAW). Based on the results of the study, it can be concluded that by applying the preheating variation treatment on the cast iron welding, there was a change in the microstructure and it was dominated by pearlite-ferrite in the weld metal area. As a result, the rough graphite that looks like roots became smooth after experiencing the preheating treatment because the ferrite was evenly distributed in the heat affected area. To conclude, the most superior specimen for the cast iron preheating among the four specimens was the one with 425oC temperature.
ANALISIS PENGEMBANGAN MEDIA PEMBELAJARAN E-MODUL PADA MATA PELAJARAN TEKNIK PEMESINAN BUBUT DI SMKS DHUAFA PADANG Richardo, Richardo; Syahri, Budi; Purwantono, Purwantono; Sari, Delima Yanti
Jurnal Vokasi Mekanika (VoMek) Vol 6 No 4 (2024): Jurnal Vokasi Mekanika
Publisher : Departemen Teknik Mesin Fakultas Teknik Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/vomek.v6i4.771

Abstract

The role of education is crucial in individual self-development to overcome faced challenges. The learning process is a fundamental means to enhance this educational role. However, to support an effective learning process, appropriate media is needed to ensure that information received by students is more easily understood. At SMKS Dhuafa Padang, for the lathe machining technique subject, learning media is still limited to whiteboards, textbooks, and PowerPoint presentations, which create student dependency on teachers. The lack of visualization in learning results in students having difficulty understanding the material. Therefore, E-modules become a solution to improve the quality of lathe machining technique learning. E-modules allow students to learn independently with neatly and systematically arranged material, stronger visualization, and interactivity. In conducting this research, the researcher used a Research and Development (R&D) approach and employed the Instructional Development Institute (IDI) development procedure, which has three steps: Define (needs analysis), Develop (e-module media design), and Evaluate (Validity Evaluation). The research instrument used questionnaires filled out by validators (teachers and lecturers), and the research results showed a score of 0.925 for material validity and 0.903 for media validity, indicating that this e-module media is feasible and valid for application as learning media. It is hoped that with the existence of this E-module, it can be utilized as additional learning media in the Lathe Machining Technique learning process.
KEMANDIRIAN DAN KEDISIPLINAN KERJA SISWA KELAS XI SMK NEGERI 5 PADANG DALAM PRAKTIK PEMESINAN” Permana, Kaesarion Rahman; Purwantono, Purwantono; Nabawi, Rahmat Azis; Fauza, Anna Niska
Jurnal Vokasi Mekanika (VoMek) Vol 6 No 4 (2024): Jurnal Vokasi Mekanika
Publisher : Departemen Teknik Mesin Fakultas Teknik Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/vomek.v6i4.777

Abstract

The Fourth Industrial Revolution presents difficulties that all countries must face head-on by using technology extensively in all aspects of daily life. Education is meant to provide students withithe knowledge they need toisucceed in various aspects of life. Answering the problems faced now, especially in the industrial field, SMK Negeri 5 padang plays a good role in shaping the characteriof students, in accordance with the vision of SMK Negeri 5 padang is to become an educational produce reliable human resources in the industrial era. Based on observations in machining practice research, it was found that space facilities, machining tools, and practice hours still need more attention to improve student skills. One example is the low level of student independence and discipline. This study aimsito examine the relationship between independence and discipline of grade XI students with machining practice at SMK Negeri 5 Padang. Based on the study, it was found significant relationship between independence and discipline in machining practice, as seen from the test results conducted during the study. A total of 33 xi gradeistudents of the Department ofpMechanical Engineering participated in the study in the January-June 2023/2024 academic year. The results showed a significant relationship between independence and discipline of class XI students at SMK N 5 . This is shownifrom the results of the correlation test with the value of r count> r table (0.567> 0.334) therefore the hypothesis in the study can be accepted.
ANALISIS BUKAAN BALING PEMANDU TERHADAP KINERJA TURBIN CROSSFLOW SKALA MIKRO HIDRO DI NAGARI KOTO HILALANG KABUPATEN SOLOK Halmadid, Muhammad Habib; Lapisa, Remon; Purwantono, Purwantono; Kurniawan, Andre
Jurnal Vokasi Mekanika (VoMek) Vol 6 No 4 (2024): Jurnal Vokasi Mekanika
Publisher : Departemen Teknik Mesin Fakultas Teknik Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/vomek.v6i4.784

Abstract

Energi listrik sangat penting dalam kehidupan sehari-hari, mendukung berbagai aktivitas yang bergantung pada listrik sebagai sumber utama. Indonesia memiliki tingkat konsumsi energi listrik yang tinggi, namun banyak wilayah masih belum terjangkau oleh jaringan listrik, menyebabkan berbagai masalah. Untuk mengatasi ini, perlu dikembangkan energi terbarukan yang dapat menggantikan bahan bakar fosil, seperti tenaga air. Pembangkit listrik tenaga air, khususnya mikrohidro, sangat ekonomis meskipun hanya mampu memenuhi kebutuhan beberapa rumah. Di Nagari Koto Hilalang, aliran sungai digunakan untuk pembangkit listrik mikrohidro. Pengujian menunjukkan bahwa daya dan efisiensi turbin bervariasi berdasarkan bukaan guide vane. Semakin kecil bukaan guide vane, semakin besar daya listrik yang dihasilkan. Daya optimum tercapai pada bukaan 25°, yaitu 760,36 Watt dengan efisiensi 77,50%. Sebaliknya, daya minimum dihasilkan pada bukaan 75°, yaitu 33,04 Watt dengan efisiensi 3,37%. Dari hasil perhitungan, dapat disimpulkan bahwa variasi bukaan guide vane mempengaruhi daya dan efisiensi turbin. Semakin kecil bukaan guide vane, semakin besar daya dan efisiensi yang dihasilkan. Nilai efisiensi optimum diperoleh pada bukaan 25°, yaitu 77,50%.
Penerapan Model Pembelajaran Kooperatif Tipe Jigsaw Untuk Meningkatkan Aktivitas Belajar Dan Hasil Belajar Trisna Juwita, Dinda; Syahri, Budi; Purwantono, Purwantono; Rahim, Bulkia
Jurnal Pendidikan Tambusai Vol. 9 No. 1 (2025)
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jptam.v9i1.27203

Abstract

Penelitian ini merupakan Penelitian Tindakan Kelas (PTK) yang bertujuan untuk meningkatkan aktivitas dan hasil belajar siswa pada mata pelajaran CNC melalui penerapan model pembelajaran Kooperatif Tipe Jigsaw. Subjek penelitian adalah 26 siswa kelas XI Teknik Permesinan SMK Negeri 1 Sumatera Barat pada semester genap tahun pelajaran 2024/2025. Model PTK yang digunakan mengacu pada John Elliot (1982), yang terdiri dari tahapan perencanaan, pelaksanaan tindakan, observasi, dan refleksi. Penelitian dilakukan dalam dua siklus, dengan instrumen berupa lembar observasi aktivitas belajar, tes hasil belajar kognitif, dan penilaian praktik psikomotorik. Hasil penelitian menunjukkan bahwa penerapan model Jigsaw berhasil meningkatkan aktivitas belajar dan hasil belajar siswa. Ketuntasan klasikal aktivitas belajar siswa mencapai 84,8%, dan ketuntasan hasil belajar kognitif mencapai 84,6%, melampaui indikator keberhasilan yang ditetapkan sebesar 80%. Rata-rata hasil belajar meningkat dari 71 pada siklus I menjadi 78 pada siklus II, dengan jumlah siswa tuntas meningkat dari 17 menjadi 22 orang. Keterampilan psikomotorik juga mengalami peningkatan, dari skor rata-rata 71,5 pada siklus I menjadi 84,5 pada siklus II, dengan peningkatan sebesar 12,9 poin. Dengan demikian, model Kooperatif Tipe Jigsaw efektif dalam meningkatkan aktivitas dan hasil belajar siswa pada mata pelajaran CNC.
Evaluation and characterization of charcoal briquettes using damar binder for sustainable energy Nurdin, Hendri; Waskito, Waskito; Harmanto, Dani; Purwantono, Purwantono; Kurniawan, Andre; Yuvenda, Dori; Anaperta, Yoszi Mingsih
Teknomekanik Vol. 8 No. 1 (2025): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/teknomekanik.v8i1.33672

Abstract

Palm kernel shells have great potential as biomass and renewable energy sources. Its utilization has not been maximized which is only directly burned which causes air pollution. The accumulation of solid waste in the crude palm oil processing industry negatively impacts the environment. The research aims to determine the characteristics and quality of charcoal briquettes with palm kernel shell carbonization. The main findings of this study are the calorific value, water content, volatile matter, ash content, and fixed carbon in palm kernel shell charcoal briquettes with damar binder. The experimental research method was carried out by carbonizing the raw materials of palm kernel shell briquettes, applying various concentrations of damar binder mixtures. The technical parameters of briquette making were 10 MPa pressure, 60 mesh size, and different carbonization temperatures by furnace. The calorific and proximate were empirically measured by using a bomb calorimeter. This research produced palm kernel shell charcoal briquettes with a calorific value of 30.72 MJ/kg at a carbonization temperature of 500oC and concentration of 85%:15%, a moisture content of 5.18%, volatile matter of 32.72%, ash content of 2.81%, and fixed carbon of 57.90%. Palm kernel shell charcoal briquetting technology is potentially a recommended alternative solid fuel. Consequently, developing renewable energy that is environmentally friendly leads to achieve sustainable energy security. By utilizing waste, the negative impacts on the environment can be overcome and energy needs are also resolved.
PEMANFAATAN SISTEM PEMBANGKIT LISTRIK HYBRID UNTUK POMPA ALIRAN NUTRISI INSTALASI HIDROPONIK Pulungan, Ali Basrah; Sidiqi, Adam Rasyid; Hamdani, Hamdani; Purwantono, Purwantono
Jurnal Abdi Insani Vol 11 No 4 (2024): Jurnal Abdi Insani
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/abdiinsani.v11i4.2099

Abstract

The hydroponic installation in the hydroponic community of Matur District, Agam Regency, West Sumatra, faces a major problem with a crop failure rate reaching 30%-35%. This issue is primarily caused by disruptions in nutrient flow due to the lack of continuous electricity, which affects pump operation. To address this problem, efforts are needed to ensure that the nutrient flow to the plants is maintained. The aim of this activity is to assist the hydroponic community in increasing plant production through the application of innovative technology. The solution implemented is the use of hybrid power generation system technology, integrating Solar Power Plants (PLTS) and PLN electricity. This system ensures that water pumps operate optimally, even at night or during bad weather. The implementation of this technology has been completed and directly tested. The pump is capable of delivering nutrients to all planting holes. The performance testing of the hybrid power generation system was conducted in the laboratory and at partner locations. The results of the system testing show that the voltage values meet the load requirements, with a voltage difference still within the tolerance range of 2.2% - 3.3%, thus not disrupting the motor's performance. The energy source switching time is <4 seconds, specifically 0.6 seconds from the solar power plant (PLTS) to the national grid (PLN) and 3.4 seconds in the opposite direction. This transition indicates that the hybrid power generation system operates efficiently, with pumps and lighting functioning well. Thus, it is expected that this system can significantly increase the productivity of hydroponic plants and boost the income of the hydroponic community.
PENGARUH PEMBELAJARAN PEDAGOGI KEJURUAN TERHADAP KESIAPAN PROFESIONAL MENGAJAR MAHASISWA PENGENALAN LAPANGAN PERSEKOLAHAN (PLK) DI BIDANG TEKNIK MESIN Ihsan, Fachrul; Purwantono, Purwantono; Ambiyar, Ambiyar; Afnison, Wanda; Ramadhan, Raihan
Jurnal Vokasi Mekanika (VoMek) Vol 7 No 3 (2025): Jurnal Vokasi Mekanika
Publisher : Departemen Teknik Mesin Fakultas Teknik Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/vomek.v7i3.871

Abstract

The Vocational Pedagogy course is an important factor in supporting students' teaching readiness. Observation shows that PLK students have a gap in teaching readiness even though they have taken Vocational Pedagogy courses. This study describes the teaching readiness of students in the Mechanical Engineering Department at Padang State University and analyzes the effect of the course on teaching readiness. The study employed a causal quantitative approach, surveying 92 students from the 2020 and 2021 cohorts, selected via Proportionate Stratified Random Sampling. Data were collected via a questionnaire and analyzed using descriptive analysis and simple linear regression. The results showed that students' mastery of the Vocational Pedagogy course was high, with an average score of 4.5. Students' teaching readiness was also in the "ready" category, with an average score of 4.5. Hypothesis testing results show that vocational pedagogy courses positively and significantly impact student teaching readiness. The coefficient of determination (R-square) is 0.545, meaning 54.5% of teaching readiness variables are influenced by vocational pedagogy courses, while other factors influence the rest. This study concludes that Vocational Pedagogy courses significantly and positively impact teaching readiness among students in the Department of Mechanical Engineering at FT-UNP. Micro teaching is a crucial factor in improving teaching readiness in this course.
Utilizing Augmented Reality Media to Enhance Students’ Lathe Learning Outcomes Ariansyah, Ariansyah; Prasetya, Febri; Purwantono, Purwantono; Putra, Randi Purnama
Jurnal Vokasi Mekanika (VoMek) Vol 7 No 3 (2025): Jurnal Vokasi Mekanika
Publisher : Departemen Teknik Mesin Fakultas Teknik Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/vomek.v7i3.889

Abstract

The integration of technology in vocational education has become a critical need to support 21st-century skills, especially in practice-based learning such as Basic Mechanical Engineering subjects. One promising innovation is the use of Augmented Reality (AR) media, which enables interactive three-dimensional visualization to help students concretely understand abstract concepts. This study aims to examine the effectiveness of lathe-based AR media in improving student learning outcomes and motivation in Grade X of the Machining Engineering Department at SMK Semen Padang. The research employed a quasi-experimental method using a non-equivalent control group design. The subjects consisted of two classes: the experimental class (using AR media) and the control class (using conventional learning methods). Data were collected using pre-tests and post-tests to assess learning outcomes and Likert-scale questionnaires to evaluate learning motivation. The analysis results showed that the use of AR media significantly increased student learning outcomes and motivation compared to traditional methods. Based on hypothesis testing and normalized gain score analysis, the AR media was found to be highly effective in the learning process. In conclusion, lathe-based Augmented Reality media proved to be an effective interactive learning tool that enhances students' academic performance and motivation, while also contributing to the development of innovative media in technical education.
Aplikasi Teknologi Tepat Guna pada Mesin Pencacah Pakan Ternak (Pelet) dalam Meningkatkan Efisiensi Kinerja Peternak Ikan Jasman, Jasman; Purwantono, Purwantono
Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Vol 22, No 1 (2022): Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/sb.02040

Abstract

Permasalahan pertama yang di alami peternak ikan adalah mahalnya pembelian bahan pembuatan pelet ikan. Sehingga hal ini mengakibatkan menurunnya pendapatan para peternak ikan. Bahan-bahan pembuatan pelet adalah Tepung Teri, Tepung Udang, Dedak Halus, Tepung Jagung daun pepaya, daun singkong dan lain-lain. Kegiatan pelaksanaan ini bertujuan untuk menyediakan mesin pencacah pakan ternak (pelet ikan) dalam meningkatkan efisiensi kinerja peternak ikan dalam pembuatan. Mesin pencacah pakan ternak (pelet ikan) memiliki salah satu mesin yang berguna untuk pencacah/perajang bahan pembuatan pelet, seperti daun singkong, daun pepaya dan lain-lain. Teknik yang digunakan adalah pengembangan teknologi tepat guna. Metode yang digunakan adalah pengembangan teknologi tepat guna. Kegiatan ini dilakukan dimulai merancang mesin pencacah bahan pembuatan pelet, pembuatan mesin, memberikan teori kepada peternak ikan tentang tentang bahan dan teknik pembuatan pelet, serta polatihan mengoperasian mesin pencacah bahan pembuatan pelet ikan. Hasil yang dicapai dalam program ini adalah tersedianya mesin pencacah pakan ternak (pelet ikan). serta dari program ini adalah peningkatan pemahaman dan informasi tentang mesin pencacah pakan ternak (pelet ikan). serta meningkatkan taraf  kehidupan kelompok masyarakat Kanagarian Padang Belimbing, Kecamatan X Koto Singkarak, Kabupaten Solok, Sumatera Barat.
Co-Authors Abdul Aziz Adam Rasyid Sidiqi Ahmad Suyuthi, Ahmad Akhbar, Muhammad Al-attab, Khaled Ali Aldio, Muhammad Fikhri Alfarizi, Aldi Alfian Barwan, Esco Ali Basrah Pulungan Ambiyar, Ambiyar Anaperta, Yoszi Mingsih Andre Kurniawan Andri, Rezky Antama, Diko Aprianti, Maidinda Ardi, Junil Ariansyah Ariansyah, Ariansyah Arwizet Arwizet, Arwizet Aswanto, Trio Harinaldi Bahrul Amin Budi Syahri Bulkia Rahim Darul Prayogo Delima Yanti Sari Dori Yuvenda Dwi Antoro, Dwi Eko Indrawan Erizon, Nelvi Fajri, Husnul Fajrin, M Falah, M. Jalaluddin Fauza, Anna Niska Febri Prasetya Febria Surjaman Fernando, Dicky Pratama Fiki Efendi Fitrah Qalbina Fitrianingsih, Ariyanti Halmadid, Muhammad Habib Hamdani Hamdani Harmanto, Dani Harpen, Romario Van Hidayat, Rohman Ihsan, Fachrul Indradewa, Rhian Indrata, Syahyuli Irzal, Irzal Jasman Jasman Junil Adri Kifli, Rafi Febrianto M. Choeroni, M. Choeroni Masriadi, Masriadi Muhibbudin, Muhibbudin Muhibuddin Muhibuddin, Muhibuddin Muldi Yuhendri Mulianti Nabawi, Rahmat Azis Nofri Helmi, Nofri nst, Hafizd Syahiran Nurdin Hendri Nurwijayanti Oktober, Qori Pakpahan, Binsar Maruli Tua Permana, Kaesarion Rahman Pratama, Daffa Aji Primawati Primawati, Primawati Purnama Putra, Randi Putra, Ericka Putra, Randi Purnama Putri, Rahmaida Rahmat, Febri Ramadhan, Ozi Ramadhan, Raihan Refdinal, Refdinal Remon Lapisa Richardo, Richardo Rifelino Rifelino Rinaldo, Putu Satria Rivaldi, Thio Sabirin, Ahmad Samsul Huda Sanjaya, Gilang Satria, Lucky Sidiq, Ahmad Halim Simanjuntak, Janter Pangaduan sudiani, yoni Sugiyarto Sugiyarto Supendi, Supendi Syahril Syahril Trisna Juwita, Dinda Trisyaldi, Ar Utami, Fathya Suci Ventriolla, Venny Wahyudi Wahyudi Wanda Afnison Waskito Waskito, Waskito Wulansari, Rizky Ema Yolli Fernanda Yufrizal Yufrizal, Yufrizal Yuliardiansyah, Haris Zainal Abadi Zaus, Anggi Agni Zikri, Khairul