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All Journal INVOTEK: Jurnal Inovasi Vokasional dan Teknologi Jurnal Rekayasa Material, Manufaktur & Energi JPP IPTEK (Jurnal Pengabdian dan Penerapan IPTEK) JURNAL PENDIDIKAN TAMBUSAI Journal of Applied Engineering and Technological Science (JAETS) MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Teknomekanik Jurnal Vokasi Mekanika ALSYS : Jurnal Keislaman dan Ilmu Pendidikan MASALIQ: Jurnal Pendidikan dan Sains Jurnal Aplikasi IPTEK Indonesia Journal of Engineering Researcher and Lecturer Ranah Research : Journal of Multidisciplinary Research and Development
Nurdin Hendri
Department Of Mechanical Engineering, Faculty Of Engineering, Universitas Negeri Padang
Religion Aerospace Engineering Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Mechanical Engineering Public Health Social Sciences Transportation Other

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The Corelation Of Workshop Facilities To The Academic Achievement Of Eleventh Students Welding Engineering In Smaw Subjects Of SMK Negeri 1 Sumatera Barat Prabulingga, Reza Ramadhan; Nurdin, Hendri; Waskito, Waskito; Irzal, Irzal
Jurnal Vokasi Mekanika (VoMek) Vol 7 No 2 (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.v7i2.859

Abstract

The quality of school education is driven by several factors. These factors encompass school-related elements, pedagogical approaches, learning processes, environmental influences, learning facilities, and the allocation of learning time. It is evident that facilities and infrastructure represent a significant factor in the achievement of students. At SMK Negeri 1 West Sumatra, the Shielded Metal Arc Welding technique subject is used as the criterion for the completion of class 11 students. However, observations indicated that student academic outcomes were not ma11mized. This study explores the correlation between the availability of workshop infrastructure and the academic performance of Class 11 students enrolled in the SMAW (Shielded Metal Arc Welding) technique at SMK Negeri 1 West Sumatra. The investigation employs a correlational method to analyse the data. This study's population comprises 25 students enrolled in the 11th grade Welding Engineering programme, who utilise the Total Sampling Technique. The findings of the product moment correlation analysis demonstrate that the calculated r value of 0.595 exceeds the r table value of 0.396. It is evident that, with a statistical significance at p = 0.001, lower than 0.05, the alternative hypothesis (Ha) is confirmed. Considering the study’s findings, the alternative hypothesis (Ha) is accepted, signifying a robust correlation between workshop facilities and learning achievement. The findings of the analysis yielded a coefficient of determination of 35.4%, indicating that the impact of workshop facilities on student learning achievement is 35.4%. Conversely, a residual of 64.6% is attributed to external factors that were not considered in the study.
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.
Analysis of Mechanical Properties of Zn-0.5Fe-0.5Ag Alloy for Body Absorbed Implant Applications Ramadhan, Arya Famas; Arafat, Andril; Habibie, Farhan; Nurdin, Hendri; Mulianti, Mulianti
invotek Vol 24 No 3 (2024): INVOTEK: Jurnal Inovasi Vokasional dan Teknologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/invotek.v24i3.1261

Abstract

Implants that can be absorbed by the body may be developed using alloy materials based on zinc (Zn), iron (Fe), copper (Cu), and silver (Ag). Zn-based alloys are known for their faster biodegradation rates, making them particularly suitable for biodegradable implant applications. The aim of this study is to determine the corrosion rate and hardness of Zn-0.5Fe-0.5Ag alloy specimens, as well as to examine the effects of heat treatment and the addition of Fe and Ag elements. The research utilizes a direct experimental observation method to analyze the mechanical properties of the Zn-0.5Fe-0.5Ag alloy. The microstructural analysis reveals differences between pure Zn specimens and Zn-0.5Fe-0.5Ag alloy specimens. In pure Zn, the largest grain size is observed in specimens without annealing treatment, while the smallest grain size is found in specimens annealed at 350°C. For the Zn-0.5Fe-0.5Ag alloy, the smallest grain size is observed in specimens annealed at 400°C, while the largest grain size appears in those annealed at 350°C. The addition of Fe and Ag to pure Zn significantly increases the hardness, with the hardness value rising from 33.77 HV (pure Zn) to 61.64 HV. In terms of corrosion, the highest corrosion rate in pure Zn was found in specimens without annealing. In contrast, the highest corrosion rate in the Zn-0.5Fe-0.5Ag alloy was observed in specimens annealed at 400°C. In conclusion, the addition of Fe and Ag elements, along with heat treatment, significantly affects the mechanical properties of the Zn-0.5Fe-0.5Ag alloy, improving both its hardness and influencing its corrosion behavior.
Peningkatan Produktivitas Masyarakat Tani di Nagari Bukik Sikumpa Lima Puluh Kota Melalui Penerapan Alat Pemipil Jagung Nurdin, Hendri; Waskito, Waskito; Hasanuddin, Hasanuddin; Sari, Delima Yanti
Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Vol 21, No 1 (2021): 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.0770

Abstract

Umumnya kehidupan masyarakat Indonesia dipedesaan adalah bercocok tanam padi yang merupakan sektor pertanian, selain itu ada juga yang berladang jagung. Tanaman jagung merupakan tanaman pangan nasional kedua setelah padi. Jagung sebagai pakan ternak, memiliki pangsa pasar tersendiri di tengah masyarakat sehingga nilai komoditas pasarnya sangat baik. Dampak kondisi ini yang membuat kekuatan bisnis jagung menjadi sangat menguntungkan sehingga masyarakat beralih menanam jagung. Berdasarkan hasil survei dan diskusi dengan kelompok tani Mawar di Nagari Bukik Sikumpa Limapuluh Kota yang sebagian besar masyarakatnya berkehidupan sebagai petani. Perkebunan di Nagari ini lebih cenderung kepada tanaman jagung dikarenakan lebih memilih dalam perawatannya dan harga pasar yang lebih stabil (harga jagung Rp 3.700 per kilogram). Masa pertumbuhan jagung sampai dapat di panen hanya membutuhkan waktu ± 4 bulan. Permasalahan yang terjadi di masyarakat menyangkut dengan proses pemipilan jagung setelah panen. Masyarakat petani kesulitan melakukan proses pengolahan jagung setelah di panen diantaranya mulai dari pengupasan kulit jagung, pemipilan butir jagung, dan penggilingan butir jagung. Biasanya masyarakat petani melakukan proses pengolahan secara manual dengan pekerjaan tangan sehingga membutuhkan waktu yang lama dan melibatkan banyak pekerja dengan pembiayaan upah yang besar. Penerapan teknologi berupa rancang bangun alat pemipil jagung yang disampaikan ke masyarakat petani sebagai upaya meningkatkan produktivitas sehingga berdampak terhadap kesejahteraan dan membangun wawasan masyarakat menjadi sasaran dalam kegiatan program kemitraan masyarakat.
Optimalisasi Penerapan Alat Pemipil Jagung Untuk Meningkatkan Produktifitas Masyarakat Di Nagari Sungai Rimbang Nurdin, Hendri -; Sari, Delima Yanti; Waskito, Waskito
Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Vol 21, No 3 (2021): 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.01690

Abstract

Dalam industri pengolahan pakan ternak, jagung merupakan bahan pokok yang mempunyai nilai ekonomis sangat tinggi. Jagung sebagai pakan ternak, memiliki pangsa pasar tersendiri di tengah masyarakat sehingga nilai komoditas pasarnya sangat baik. Kelompok tani Tampuniak Serumpun di Nagari Sungai Rimbang Kecamatan Suliki Lima Puluh Kota yang sebagian besar masyarakatnya berkehidupan sebagai petani. Permasalahan yang terjadi menyangkut dengan proses pemipilan jagung setelah panen. Masyarakat petani kesulitan melakukan proses pengolahan jagung setelah di panen diantaranya mulai dari pengupasan kulit jagung, pemipilan butir jagung, dan penggilingan butir jagung. Biasanya masyarakat petani melakukan proses pengolahan secara manual dengan cara dicungkil saja sehingga membutuhkan waktu yang lama dan melibatkan banyak pekerja dengan pembiayaan upah yang besar. Sentuhan teknologi di masyarakat dalam mengolah hasil panen jagung belum termanfaatkan secara optimal. Teknologi alat pemipil jagung yang diterapkan ke masyarakat sangat efisien. Kapasitas alat pemipil jagung dapat melakukan kerja sebanyak 433 kg/jam dimana penggerak yang digunakan motor bensin 6,5 PK dengan putaran 3600 rpm.. Efektifitas alat pemipil jagung dalam menghasilkan produksi dengan keutuhan butiran jagung hasil pemipilan mencapai 95 %. Optimalisasi penerapan alat pemipil jagung ini berdampak terhadap peningkatan produktivitas dan kesejahteraan hidup masyarakat di Nagari Sungai Rimbang sehingga kondisi ini dapat dipertahankan sinergi keberlanjutannya oleh masyarakat.
Co-Authors - Primawati A, Affandi A, Yufrizal Abdur Rahman Abimayu, Dimas Afabek, Randa Ambiyar, Ambiyar Ambyar Ambyar Anaperta, Yoszi Mingsih Andre Kurniawan Andre Kurniawan Andri, Rezky Arafat, Andril Ardi, Julio Lukmanul Arwizet Arwizet, Arwizet Arya Rudi Nasution Batu Mahadi Siregar Budi Syahri Bulkia Rahim Darmawi Darmawi Darmawi Darmawi Dayu Alfaridh Delima Yanti Sari Denda Afri Juliadi Dimas Abimayu Dinul, Fadhilah Ikhsan Dori Yuvenda Eko Indrawan Elshaarani, Tarig Erizon, Nelvi F, Fadhlurrohman Fadhilah Fadhilah Fajar Fitra Fathi Aulia DZ Fauza, Anna Niska Febri Prasetya Fitra, Fajar Fitrah Qalbina Habibie, Farhan Hakiim, Evan Handayani, Meisuri Harahap, Doa Harmanto, Dani Hasanuddin Hasanuddin Hasanuddin WS Hendra Irawan Hidayat, Nailul Irzal Irzal Irzal, Irzal Junil Adri Kassimov, Farid Kenzhaliyev, Bagdaulet Kenzhaliyevich Kenzhaliyev, Elnar khairul umurani Laghari, Imtiaz Ali Lilik Darwito M Febriyan Baruna Putra Mansur Mansur Maryonda, Andre Muhammad Firdaus Muhammad Firdaus Muhammad Rizki Mulianti Nabawi, Rahmat Azis Nasruddin Nelvi Erizon Niko Adima Brawira Nur Ichsan Abdillah Prabulingga, Reza Ramadhan Pramudya, Aldhi Primandani, Sri Rizki Putri Primawati Primawati, Primawati Purwantono Purwantono Purwantono, Purwantono Putra, Randi Purnama Rahmad Robby Alzam Rahmadiawan, Dieter Rahmat, Febri Ramadhan, Arya Famas Ramadhan, Ozi Refdinal, Refdinal Remon Lapisa Resqy Dwicandra Rifelino Rifelino Riski Camarta Rizky Ema Wulansari Rodesri Mulyadi Rudy Anarta Saddikin, M Santoso, Bagas Saputra, Ilham Dwi Siregar, Batu Mahadi Sitorus, Purnama Anandi Syahril Syahril Toto Sugiarto Umurani, Khairul Wagino Wanda Afnison Wari, Alan Waskito Waskito Waskito Waskito Waskito, Waskito Ya, Kyaw Zay Yoga Andika Yolli Fernanda Yufrizal Yufrizal Yusuf Caniago Zainal Abadi Zhuang, Wei-Ting