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All Journal Jurnal Pendidikan Teknologi dan Kejuruan SPEKTRUM: Jurnal Pendidikan Luar Sekolah (PLS) JURNAL PENDIDIKAN TAMBUSAI Community Engagement and Emergence Journal (CEEJ) MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Teknomekanik Jurnal Vokasi Mekanika Journal of Community Service
Irzal, Irzal
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Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences Other

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A PELATIHAN KOMPETENSI PENGELASAN PADA PEMUDA PUTUS SEKOLAH DI AUR DURI INDAH Adri, Junil; Irzal, Irzal; Erizon, Nelvi; Refdinal, Refdinal; Ambiyar, Ambiyar; Purwantono, Purwantono; Yufrizal, Yufrizal; Jasman, Jasman; Sudiani, Yoni
Journal of Community Service Vol 4 No 2 (2022): JCS, Desember 2022
Publisher : Ikatan Dosen Menulis

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (941.928 KB) | DOI: 10.56670/jcs.v4i2.96

Abstract

Terbatasnya lapangan kerja yang tersedia tidak seimbang dengan jumlah angkatan kerja yang setiap tahun bertambah sehingga berdampak pada tingginya jumlah pengangguran. Untuk itu perlu diberikan pendidikan dan keterampilan pada generasi muda. Perencanaan dan pengembangan generasi muda hendaknya disesuaikan dengan kebutuhan akan tenaga kerja serta kesempatan dan lapangan kerja yang tersedia kemudian sistem yang efektif yang dapat menunjangnya. Salah satu upaya meningkatkan keterampilan generasi muda di kelurahan Aur Duri adalah dengan memberikan pelatihan kompetensi langsung kepada generasi muda. Tujuan pelaksanaan pengabdian kepada masyarakat ini adalah untuk melatih generasi muda yang ada di kelurahan Aur Duri dalam bidang kompetensi dasar pengelasan. Kegaitan pelatihan dilakukan dengan metode demonterasi dan projek based leasrnig. Demonterasi dilakukan oleh instuktur bersertifikasi pengelasan. Pelatihan kompetensi dasar pengelasan diikuti oleh 15 orang peserta. Peserta sangat antusias dalam mengikuti peltihan. Peserta yang dianggap sudah mahir diberikan sertifikat yang menjelaskan bahwa peserta tersebut mampu menguasi kompetensi pengelasan dengan baik. Kegiatan ini mampu memberikan bekal kepada generasi muda putus sekolah untuk memasuki dunia kerja ataupun berwirausaha
Effect of Strong Welding Flow on the Violence of Low Carbon Steel Results of SMAW Welding with Electrodes 7018 Jasman, Jasman; Irzal, Irzal; Pebrian, Pebrian
Teknomekanik Vol. 1 No. 1 (2018): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (227.146 KB) | DOI: 10.24036/tm.v1i1.972

Abstract

Welding can be interpreted by the process of joining two metals to the molten metal point. Metal low carbon steel which is easily processed by welding techniques. Strong setting of the welding current will affect the weld. If the current used is too low it will cause the difficulty of igniting the electric arc. Conversely, if the welding current is too high, the electrode will melt too fast. The welding current strength 130A corresponds to the diameter of the 3.2 mm electrode. The purpose of the research was to determine whether or not the influence of welding current on the low carbon steel hardness of SMAW welding results with E7018 electrode. This type of research was carried out by the type of experimental research, the research process was carried out by hardness testing, and the data obtained through the results of hardness testing was followed by observation and analysis of specimens of low carbon steel ST 37 welded by SMAW with different current strength using E-7018 electrode. Low carbon steel specimens from SMAW welding with 130 A welding current using E-7018 electrode have a higher hardness value compared to low carbon steel specimens produced by SMAW with welding current strengths of 100A and 160A using E-7018 electrodes.
Comparison of Accuracy in Cutting Dental Profiles Between Differential Methods Approach Upward with a Lower Approach to Making Straight Gear Wheels Agustian, Ganda; A, Yufrizal; Irzal, Irzal
Teknomekanik Vol. 1 No. 2 (2018): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (220.898 KB) | DOI: 10.24036/tm.v2i2.1672

Abstract

In the world of industrial gear use, it cannot be denied, every machine in the industrial world uses a component, namely gears to move rotating power. For this reason, in making gears the precision of the gear profile must be considered. The purpose of this study is to compare the accuracy of cutting the dental profile between the approach differential method and the approach to the bottom. This research is an experimental research. Based on the results of data analysis on the comparison of the precision of cutting dental profiles between the approach differential methods and the approach to the bottom, the upward approach is more appropriate in terms of thickness and number of teeth. The number of samples used in the study of 12 gears consisting of 6 gears was carried out with the approach differential approach method, and 6 gears were carried out by the differential approach approach method. Each sample is measured in thickness and the number of teeth in a straight gear. After measurement, the data is processed using the t-test formula to see the significant difference in the accuracy of the dental profile. Based on the results of the t-test analysis that has been carried out there are differences in the gears produced. The approach to differential approach to getting better gear results.
Numerical Analysis of Fluid Flow on Cross Flow and Kaplan Turbine Prototype Purwantono, Purwantono; Sidiq, Ahmad Halim; Irzal, Irzal; Refdinal, Refdinal
Teknomekanik Vol. 1 No. 2 (2018): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (403.663 KB) | DOI: 10.24036/tm.v2i1.1972

Abstract

Based on previous research conducted by Purwantono about the utilization of exhaust flow from a conventional cross-flow turbine prototype that was used as an inlet of tubin Kaplan [1]. This research was carried out to see how the exhaust flow velocity of each tubin before and after was combined into one combination turbine. This numerical based study uses the Ansys 18.0 application by inputting a 3D design from a conventional turbine prototype which was used as the material for this study. The results obtained in this study show the average of outlet velocity in the Kaplan turbine that uses a velocity outlet from a cross flow turbine of 0.3 m / s greater when it is combined, which is 8.33 m / s and after being combined to 0.38 m / s. The results of this study are expected to contribute to the development of conventional turbines later
Making Print Tool Gambir Sap Parallel Slinder System Jasman, Jasman; Erizon, Nelvi; Irzal, Irzal; Ardi, Junil
Teknomekanik Vol. 2 No. 2 (2019): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (586.918 KB) | DOI: 10.24036/tm.v2i1.3872

Abstract

The problems that exist in the former group are the process of knowing the results of processing gambir sap is still done manually. To print 20 kg of gambier sap, it takes about 5 to 8 hours. Through this service activity, the team wanted to overcome the problem by providing a sap gambir. The purpose of implementing this service activity is to provide a solution to the problems faced by gambier farmers in the process of printing sap gambir. The method of applying science and technology carried out in this activity is to provide introductory theories, demonstrations, and practices. The introductory theory is applicable, namely the introduction of tools, how to use them, their functions and application applications in the field. The realization of the service to the community of Kenagarian Lampanjang Sutera Pesisir Selatan Subdistrict was held on October 6, 2018. The tool that was handed over to the community of Kenagarian Lampanjang Kecamatan Sutera was a unit of a parallel cylinder printer. Application of appropriate technology that is applied to processing gambir leaves must be adjusted to the productivity of printed sap gambir. The amount of gambir sap obtained by gambir farmers will adjust the capacity of the gambir sap. The tool devoted to the community has cylindrical media made with wood media with a thickness of 70 m. The mould cylinder will print the sap of gambir according to the size sold on the market and have a gum pushing media from the mould which serves to release the sap that is in the cylinder mould. This driving media is also made using wood.
Numerical analysis of flow characteristics of the oil-water mixture in stratified-annular horizontal pipe Erizon, Nelvi; Jasman, Jasman; Irzal, Irzal; Aldio, Muhammad Fikhri; Saputra, Aprizal; Tin, Chau Trung
Teknomekanik Vol. 5 No. 2 (2022): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (620.401 KB) | DOI: 10.24036/teknomekanik.v5i2.14572

Abstract

The loss of oil fluid flow in the piping system in the petroleum industry due to friction is the cause of low efficiency. To reduce friction loss, the viscosity of petroleum can be lowered by adding water as a mixture. Actually, the flow loss in a piping system is influenced by several factors including flow pattern, fluid type, flow velocity, flow pressure and pipe diameter. This study aims to determine the effect of flow patterns on changes in velocity in the two-phase flow of oil and water in a piping system. This numerical analysis research was carried out using Fluent 6.2 software with variations in the velocity of the oil-water mixture: 0.2, 0.4 and 0.6 m/s. The simulation results show that the greatest pressure loss occurs at a fluid velocity of 0.6 m/s where the flow is stratified mixed. While the smallest pressure loss at a mixture velocity of 0.2 m/s when the flow is stratified smooth. From the results of the study, it can be concluded that the increase in fluid flow velocity has a positive correlation with the increase in the value of flow losses in the pipe.
Inovasi Mesin Pencacah untuk Kegiatan Recycle Sampah Plastik di Kenagarian Maninjau Refdinal, Refdinal; Irzal, Irzal; Yufrizal, Yufrizal; Adri, Junil
Community Engagement and Emergence Journal (CEEJ) Vol. 5 No. 3 (2024): Community Engagement & Emergence Journal (CEEJ)
Publisher : Yayasan Riset dan Pengembangan Intelektual

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37385/ceej.v5i3.6399

Abstract

Permasalahan sampah plastik di Kenagarian Maninjau semakin mendesak perhatian, mengingat dampak negatifnya terhadap lingkungan dan kesehatan masyarakat. Untuk menjawab kebutuhan ini, program pengabdian masyarakat dilaksanakan dengan memperkenalkan inovasi mesin pencacah plastik yang dirancang untuk mendukung kegiatan daur ulang sampah plastik secara efektif dan efisien. Mesin pencacah ini diharapkan mampu mengurangi volume sampah plastik, memudahkan proses pengelolaan sampah, serta meningkatkan nilai ekonomis bagi masyarakat melalui pengolahan limbah plastik menjadi bahan baku produk baru. Program ini melibatkan proses pembuatan, pelatihan, dan pendampingan penggunaan mesin pencacah bagi masyarakat setempat. Metode pengabdian mencakup tahap perencanaan, pelatihan teknis, dan evaluasi keberhasilan program melalui pengukuran efektivitas mesin dalam mengurangi limbah plastik. Hasil program menunjukkan peningkatan signifikan dalam kapasitas daur ulang sampah plastik serta memberikan dampak positif terhadap kesadaran masyarakat dalam menjaga lingkungan. Dengan inovasi ini, diharapkan Kenagarian Maninjau dapat menjadi model dalam pengelolaan sampah plastik berbasis masyarakat yang mandiri dan berkelanjutan
PENGARUH KESEJAHTERAAN EKONOMI ORANG TUA TERHADAP MOTIVASI BELAJAR SISWA SEKOLAH MENENGAH KEJURUAN Firdaus, Afzanul; Adri, Junil; Irzal, Irzal; Indrawan, Eko
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.v6i4.770

Abstract

This study explores the impact of parents' economic status on students' learning motivation at SMKN 1 Guguk. Education is the cornerstone of national development, and in Indonesia, educational success is determined not only by the quality of teaching but also by external factors such as parental economic status. The research reveals that family economic level plays a crucial role in students' access to educational facilities, which affects their learning motivation. Students from well-off families tend to have more learning tools and adequate support, whereas those from low-income families often lack essential facilities, impacting their motivation and academic performance. This study employs a descriptive method with a quantitative approach, involving 79 students as the sample. A questionnaire was used as the research instrument to measure the variables of parents' economic status and students' learning motivation. The analysis results show a significant correlation between economic conditions and students' learning motivation. These findings provide insights for educators, parents, and policymakers in designing effective strategies to enhance students' learning motivation, notably for those from economically disadvantaged families. The results are expected to improve the quality of education at SMKN 1 Guguk and serve as a basis for more inclusive and equitable educational policies in Indonesia.
HUBUNGAN PENERAPAN KESEHATAN DAN KESELAMATAN KERJA (K3) DENGAN HASIL BELAJAR PRAKTIK TEKNIK PEMESINAN BUBUT SISWA JURUSAN TEKNIK PEMESINAN DI SMK NEGERI 1 PADANG Fikri, Ikhsanul; Irzal, Irzal; Indrawan, Eko; Jasman, Jasman
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.v6i4.785

Abstract

Theì causeì of work accideìnts is baseìd on a lack of undeìrstanding in impleìmeìnting Occupational Safeìty and Heìalth (K3), as weìll as Occupational Safeìty and Heìalth (K3) reìgulations that areì not followeìd, theìreìforeì theì leìveìl of risk of accideìnts will beì veìry largeì. Theì purposeì of this study is to deìteìrmineì theì reìlationship beìtweìeìn occupational heìalth and safeìty (K3) and theì leìarning outcomeìs of meìchanical practiceì of gradeì XI studeìnts majoring in Meìchanical Eìngineìeìring at SMK Neìgeìri 1 Padang. Theì data colleìction teìchniqueì in this study useìs a queìstionnaireì with a likeìr scaleì. Theì data analysis teìchniqueì useìs SPSS softwareì with correìlation analysis that looks for variableì reìlationships. As a reìsult of theì data deìscription, a positiveì and significant reìlationship beìtweìeìn theì reìlationship beìtweìeìn theì impleìmeìntation of K3 and theì leìarning outcomeìs of Prakeìrin studeìnts in gradeì XI of Machining Eìngineìeìring SMK Neìgeìri 1 Padang was 0.490. at a significanceì leìveìl of 0.05 That this can proveì a positiveì influeìnceì beìtweìeìn theì two variableìs. Meìanwhileì, theì deìteìrminant valueì (R2) is 0.185. This meìans that theì reìlationship beìtweìeìn theì application of K3 and theì leìarning outcomeìs of latheì practiceì has a weìak cateìgory. From this, it can beì concludeìd that many factors affeìct theì impleìmeìntation of studeìnt K3, of which oneì of theìseì many things is studeìnt leìarning outcomeìs.
Enhanced durability and tribological performance of polyvinyl alcohol/layered double hydroxide/tannic acid composites under repeated swelling cycles Rahmadiawan, Dieter; Shi, Shih-Chen; Zhuang, Wei-Ting; Indrawan, Eko; Fernanda, Yolli; Syahri, Budi; Irzal, Irzal
Teknomekanik Vol. 7 No. 2 (2024): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/teknomekanik.v7i2.32872

Abstract

In recent years, the exploration of polyvinyl alcohol (PVA) composites has garnered significant attention due to their versatility applications in aqueous environments. However, despite their promise, neat PVA exhibit limitations such as significant mechanical degradation under repeated swelling cycles. This study investigates the durability and tribological performance of polyvinyl alcohol (PVA) composites reinforced with nickel-iron layered double hydroxide (LDH) and tannic acid (TA) under repeated swelling cycles. Building on previous research that explored composite preparation and initial characterization, this research emphasizes the effects of cyclic swelling on wear resistance, friction behavior, and mechanical properties. Tribological tests were conducted to evaluate the coefficient of friction (COF) and wear rate before and after multiple swelling cycles, alongside tensile strength and strain measurements. The results revealed that the PVA/TA2/LDH2 composite, containing the highest additive content, exhibited the lowest wear rate of 11.52 × 10⁻⁵ mm³/Nm after 3 swelling cycles, demonstrating superior resistance to material degradation. Although PVA/TA2/LDH1 exhibited a slightly lower COF, its wear rate was higher due to reduced reinforcement. Compared to neat PVA, which showed a COF increase from 0.45 to 0.53, the PVA/LDH/TA composites retained their tribological stability, with only a marginal increase in COF and wear rate. Similarly, tensile strength of PVA/TA2/LDH2 decreased by only 11% after 3 cycles (from 33.3 MPa to 30 MPa), while neat PVA experienced a 25.5% reduction (from 30 MPa to 22.5 MPa). These findings highlight the potential of PVA/LDH/TA composites for applications in aqueous environments, offering significantly enhanced long-term performance and reliability.
Co-Authors A, Yufrizal Agustian, Ganda Aldio, Muhammad Fikhri Ambiyar, Ambiyar Andre Kurniawan Arafat, Andril Ardi, Junil Aspar, Fathir Ayusran, Reyvanda Budi Syahri Bulkia Rahim Caniago, Yusuf Dori Yuvenda Eko Indrawan Erizon, Nelvi Fadillah, Egi Fahrezi, Muhammad Shadiq Fajri, Husnul Fajrin, M Fauza, Anna Niska Febri Prasetya Fernanda, Firza Fernandes, Erik Fikri, Ikhsanul Firdaus, Afzanul Fitra, Dinul Fitrah Qalbina Habibie Habibie Hardi, Fidel Apria Ismail, Havis Jasman Jasman Junil Adri Kelvin Permana Saputra, Dwi Khairul, Farid Lili Dasa Putri Maryonda, Andre Milana Milana Nabawi, Rahmat Aziz Nurdin Hendri Nurmahmudi, Nurmahmudi Pebrian, Pebrian Pepito, Ma Leona Maye B. Prabulingga, Reza Ramadhan Primawati Primawati, Primawati Purwantono, Purwantono Putra, Setrihan Rahmadiawan, Dieter Ramadan, Ryan Ramadhan, Qadri Refdinal, Refdinal Remon Lapisa Rifelino Rifelino Saputra, Aprizal Saputra, Muhammad Pandi Shi, Shih-Chen Sidiq, Ahmad Halim sudiani, yoni Syahril Syahril Syaputra, Ardiansyah Tin, Chau Trung Wanda Afnison Waskito Waskito, Waskito Wulansari, Rizky Ema Yolli Fernanda Yufrizal Yufrizal, Yufrizal Zainal Abadi Zaus, Anggi Agni Zhuang, Wei-Ting