Article Per Year (5 Year)
p-Index From 2021 - 2026
3.984
P-Index
This Author published in this journals
All Journal Jurnal Pendidikan Teknologi dan Kejuruan 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 Tsaqofah: Jurnal Penelitian Guru Indonesia MASALIQ: Jurnal Pendidikan dan Sains Al-DYAS : Jurnal Inovasi dan Pengabdian kepada Masyarakat
Irzal, Irzal
Unknown Affiliation
Religion 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

Published : 33 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 33 Documents
Search

 1   2   3   4 
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.
Hubungan Penerapan Aspek K3 Terhadap Hasil Belajar Siswa Kelas XI Teknik Pengelasan Pada Mata Pelajaran Las Busur Manual (SMAW) di SMK N 1 Guguk Maryonda, Andre; Erizon, Nelvi; Irzal, Irzal; Nurdin, Hendri
Jurnal Vokasi Mekanika (VoMek) Vol 7 No 1 (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.v7i1.842

Abstract

The following study is intended to find if it exists an association among these application about K3 aspects along with student learning outcomes of the welding engineering workshop at SMK Negeri 1 Guguk. During the practice, it was found that there was a lack of understanding and implementation of K3 aspects by the Welding Technology students, as well as insufficient attention to and maintenance of K3 equipment. This research applies correlational methods with quantitative techniques. A total of 55 class XI TLAS students in the SMAW Welding Engineering subject were to be used as subjects. Sampling method adopted in this study is the purposive sampling technique. The data testing results in this study used the product-moment correlation, which showed that the calculated r score was higher than the table r value, indicating a positive relationship between the variables. The significance score was low, leading to the acceptance of the alternative hypothesis (Ha). Thus, the research hypothesis is recognized at a sufficient interpretation level. The data testing results show that the implementation of K3 aspects contributes to student learning outcomes, although the contribution is not dominant. Other aspects that influence student learning outcomes were not studied in this research. Outcome of the data examination lead to theconclusion that application about K3 aspects shows a direct impact on the results of learning of class XI Welding Engineering students in the manual arc welding subject at SMK Negeri 1 Guguk.
Pengaruh Problem Based Learning dalam Meningkatkan Critical Thinking dan Creative Thinking Siswa di SMK Negeri 1 Sumatera Barat Hardi, Fidel Apria; Waskito, Waskito; Irzal, Irzal; Kurniawan, Andre
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.v9i1.25372

Abstract

Pelaksanaan pendidikan harus dilaksanakan dengan sebaik mungkin agar dapat menghasilkan individu dengan potensi terbaiknya. Penelitian ini bertujuan untuk mengetahui pengaruh penerapan problem based learning dalam meningkatkan kemampuan critical thinking dan creative thinking siswa pada mata pelajaran teknik gambar manufaktur di SMK Negeri 1 Sumatera Barat. Jenis penelitian ini adalah Quasi experiment menggunakan non-equivalent control group design. Populasi pada penelitian ini adalah siswa kelas XI Teknik Pemesinan SMK Negeri 1 Sumatera Barat berjumlah 57 orang dengan sampel berjumlah 15 orang pada masing-masing kelas kontrol dan eksperimen. Tahap awal dengan memberikan pretest pada tiap kelas, kemudian menerapkan model problem based learning pada kelas eksperimen, lalu tahap akhir dengan memberikan posttest pada tiap kelas. Hasil penelitian menggunakan teknik analisis data independent sample t-test. Hasil pengujian menunjukkan pada hasil postest critical thinking diperoleh nilai rata-rata kelas kontrol 77.67 dan eksperimen 83.33 dengan nilai signifikan 0.035, kemudian pada hasil posttest creative thinking diperoleh nilai rata-rata kelas kontrol 68 dan eksperimen 86.67 dengan nilai signifikan 0.001. Karena nilai signifikan kurang dari 0.05 (Sig.<0.05) maka dapat disimpulkan bahwa adanya pengaruh yang signifikan dari penerapan problem based learning dalam meningkatkan critical thinking dan creative thinking siswa di SMK Negeri 1 Sumatera Barat.
Penerapan Model Pembelajaran Project Based Learning untuk Meningkatkan Hasil Belajar Siswa Kelas XI pada Mata Pelajaran Las SMAW di SMK Negeri 1 Sumatera Barat Ismail, Havis; Irzal, Irzal; Jasman, Jasman; Arafat, Andril
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.v9i1.25505

Abstract

Tujuan penelitian adalah meningkatkan hasil belajar siswa dengan penerapan model pembelajaran berbasis Project Based Learning (PjBL). Penelitian dilakukan dengan metode penelitian tindakan kelas. Subjek penelitian ialah 14 orang siswa kelas XI Teknik Pengelasan. Hasil pengamatan siklus 1 dan siklus 2 menunjukkan adanya peningkatan terhadap hasil belajar siswa antar siklus. Pembelajaran siklus pertama menghasilkan rata-rata sebesar 74,28 dan meningkat menjadi 81,49 pada siklus kedua. Persentase ketuntasan klasikal siklus 1 sebesar 57%, adanya peningkatan pada siklus 2 menjadi 85%. Indikator keberhasilan penelitian yang ditetapkan yaitu kriteria ketuntasan minimal (KKM) 75 dengan ketuntasal klasiklal minimal 75%. Kesimpulan dari penelitian ini yaitu penerapan model pembelajaran berbasis PjBL pada mata pelajaran Las SMAW dapat meningkatkan hasil belajar peserta didik.
From passive to critical consumption: The role of educational content in short videos to improve students' critical thinking skills Aspar, Fathir; Refdinal, Refdinal; Erizon, Nelvi; Jasman, Jasman; Irzal, Irzal; A, Yufrizal
Jurnal Pendidikan Teknologi Kejuruan Vol 8 No 1 (2025): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jptk.v8i1.42323

Abstract

The engaging and personalized nature from short video makes it quickly popular, yet concerns persist about their potential to diminish critical thinking skills. This study investigates whether short videos with educational content can improve students' critical thinking skills. Using a quasi-experiment method, Thirty-three participants were divided into control and experimental groups, with critical thinking measured using the Holistic Critical Thinking Scoring Rubric (HCTSR) based on essay analysis in pretest and posttest. After administering educational short videos to the experimental group, the results showed that there was an increase in students' critical thinking skills, shown by the result of controlling the pretest variable through the ANCOVA test with a p-value of <0.001. The result highlights the potential of educational short videos as tools for fostering critical thinking by providing interventions which prioritize treatment fidelity through standardized protocols (SOPs) for content delivery, validating assessment tools, and structuring content design. Recommendations for future research include larger sample sizes, repeated data collection at strategic intervals, and rigorous validation of question complexity.
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.
Analisis Keluhan Muskuloskeletal pada Pengemudi Mobil Prototype Menggunakan Metode Nordic Body Map Khairul, Farid; Afnison, Wanda; Irzal, Irzal; Milana, Milana
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.v7i2.862

Abstract

The depletion of fossil energy reserves, especially oil and natural gas, has driven innovations in energy-efficient vehicles, including through the Energy-Efficient Car Contest (KMHE). In developing prototype cars for this competition, driver ergonomics is often overlooked. This study aims to analyze musculoskeletal complaints experienced by prototype car drivers from the Faculty of Engineering at UNP. The main instrument used was the Nordic Body Map (NBM) questionnaire, administered to three drivers after they performed a 20-minute static driving simulation. The collected data were analyzed and categorized based on complaint levels. The results showed that the most frequent complaints occurred in the lower back (score 12), followed by the lower neck, buttocks, and hips (score 11). The average overall score was 71.67, indicating a high-risk category. The highest individual score was 89 (Driver 3), and the lowest was 62 (Driver 1). These complaints were caused by the absence of an ergonomic driver seat in the prototype car. The study concluded that the current cockpit design is not ergonomically adequate, posing a risk of injury. Therefore, it is recommended that the design team immediately create a more upright driver seat with thigh support to enhance comfort and reduce musculoskeletal complaints.
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 Fajri, Husnul Fajrin, M Fauza, Anna Niska Febri Prasetya 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 Maryonda, Andre Milana Milana Nabawi, Rahmat Aziz Nurdin Hendri Nurmahmudi, Nurmahmudi Pebrian, Pebrian Prabulingga, Reza Ramadhan 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