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All Journal Jurnal Pendidikan Teknologi dan Kejuruan Rekayasa Mesin JOIV : International Journal on Informatics Visualization INVOTEK: Jurnal Inovasi Vokasional dan Teknologi Jurnal Penelitian Pendidikan IPA (JPPIPA) JURNAL PENDIDIKAN TAMBUSAI JETL (Journal Of Education, Teaching and Learning) Jurnal Teknik Mesin Jurnal Teknologi Informasi dan Pendidikan Jurnal Vokasi MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Reswara: Jurnal Pengabdian Kepada Masyarakat Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat SELODANG MAYANG Teknomekanik Multicience International Journal of Multidisciplinary Research and Literature (IJOMRAL) Jurnal Vokasi Mekanika Journal of Social And Economics Research Journal of Community Service Tsaqofah: Jurnal Penelitian Guru Indonesia CONSEN: Indonesian Journal of Community Services and Engagement Jurnal Aplikasi IPTEK Indonesia Al-DYAS : Jurnal Inovasi dan Pengabdian kepada Masyarakat Journal of Engineering Researcher and Lecturer Ranah Research : Journal of Multidisciplinary Research and Development International Journal of Multidisciplinary Research of Higher Education (IJMURHICA) Journal of Innovative and Creativity IJIMCE : International Journal of Innovation in Mechanical Construction and Energy Venus: Jurnal Publikasi Rumpun Ilmu Teknik Jurnal Sains dan Teknologi Jurnal Pendidikan MIPA IJIS Edu : Indonesian Journal of Integrated Science Education JRTI (Jurnal Riset Tindakan Indonesia) Journal of Educational and Learning Studies
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Rancang Bangun Sistem Pembangkit Energi Listrik Menggunakan Solar Cell Sebagai Sumber Energi Untuk Cold Storage Yang Dikombinasikan Dengan Mesin Kompresi Uap Fahrendra, Aqsal; Karudin, Arwizet; Fernanda, Yolli; Lapisa, Remon
Jurnal Pendidikan Tambusai Vol. 8 No. 3 (2024)
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

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Abstract

Penelitian ini bertujuan merancang sistem pembangkit energi listrik berbasis solar cell untuk cold storage yang dilengkapi mesin kompresi uap dan termoelektrik sebagai alternatif penyimpanan yang hemat energi dan ramah lingkungan. Metode penelitian ini menggunakan pendekatan eksperimental, di mana cold storage diuji di berbagai kondisi cuaca untuk mengukur kinerja solar cell dan sistem pendingin. Proses pengujian melibatkan pengukuran intensitas cahaya, suhu lingkungan, tegangan, dan arus listrik yang dihasilkan. Hasil penelitian menunjukkan bahwa intensitas cahaya matahari memengaruhi daya listrik solar cell secara signifikan. Kombinasi mesin kompresi uap dan termoelektrik mampu mencapai suhu optimal untuk penyimpanan, sedangkan termoelektrik saja kurang efektif dalam menjaga suhu rendah yang dibutuhkan. Implikasi dari penelitian ini adalah bahwa sistem pendingin berbasis solar cell berpotensi diterapkan untuk aplikasi cold storage, khususnya di daerah tropis dengan potensi energi surya yang tinggi, guna mendukung konservasi energi dan lingkungan yang lebih berkelanjutan.
Pembuatan Dan Pengujian Cold Storage Menggunakan Kombinasi Modul Termoelektrik Dan Mesin Kompresi Uap Berbasis Energi Matahari Menggunakan Solar Cell Kandena Putra, Tegar; Karudin, Arwizet; Refdinal, Refdinal; Fernanda, Yolli
Jurnal Pendidikan Tambusai Vol. 8 No. 3 (2024)
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

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Abstract

Abstrak Penelitian ini bertujuan untuk merancang dan menguji prototipe Cold Storage yang menggunakan kombinasi modul termoelektrik dan mesin kompresi uap berbasis energi surya sebagai sumber daya. Sistem ini dirancang untuk mengurangi ketergantungan pada energi listrik konvensional dan emisi karbon dalam penyimpanan produk pangan yang mudah rusak. Metode penelitian melibatkan desain, perakitan, dan pengujian prototipe untuk mengevaluasi performa pendinginan dan efisiensi energi. Hasil pengujian menunjukkan bahwa kombinasi termoelektrik dan kompresi uap menghasilkan pendinginan yang efisien, dengan perbandingan COP dan EER yang lebih tinggi dibandingkan metode termoelektrik tunggal. Penelitian ini mengindikasikan bahwa Cold Storage bertenaga surya dapat menjadi solusi penyimpanan pangan yang ramah lingkungan dan efisien. Implikasi dari penelitian ini adalah sebagai langkah awal dalam pengembangan teknologi penyimpanan dingin yang lebih berkelanjutan dan ekonomis.
Studi Eksperimental Gasifikasi Sampah Organik dan Serbuk Kayu Pada Downdraft Gasifier Seprianto, Ekon; Fernanda, Yolli; Karudin, Arwizet; Mulianti, Mulianti
Jurnal Pendidikan Tambusai Vol. 8 No. 3 (2024)
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

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Abstract

Kebutuhan energi di Indonesia terus bertambah seiring pertumbuhan penduduk dan perkembangan industri, tetapi ketergantungan pada bahan bakar fosil menimbulkan masalah kelangkaan energi. Biomassa sebagai energi terbarukan menawarkan solusi yang prospektif. Penelitian ini mengevaluasi kinerja gasifikasi dari tiga jenis bahan bakar berbasis biomassa yaitu pellet kayu 100%, campuran serbuk kayu dan pellet kayu dengan perbandingan volume 1:1, serta campuran pellet sampah pasar dan pellet kayu dengan perbandingan volume 1:1 menggunakan downdraft gasifier. Metode penelitian ini berupa uji eksperimental untuk mengukur suhu gasifikasi dan durasi nyala api efektif syngas yang dihasilkan yang dilakukan dengan flare test. Hasilnya menunjukkan bahwa pellet kayu menghasilkan performa terbaik dalam stabilitas pembakaran, rendemen syngas, dan nilai kalor, dengan waktu nyala api efektif selama 85 menit. Campuran serbuk kayu dan pellet kayu 1:1 mempercepat reaksi tetapi memiliki waktu nyala api yang lebih pendek, yakni 15 menit. Campuran pellet sampah pasar dan pellet kayu menghasilkan syngas dengan waktu nyala api efektif 25 menit, meskipun nilai kalornya lebih rendah. Secara keseluruhan, pellet kayu murni merupakan bahan bakar gasifikasi paling efisien, sementara campuran lainnya menawarkan potensi pemanfaatan yang relevan untuk keberlanjutan lingkungan.
Comparative Analysis of Energy Efficiency Measurement in Building with Manual Calculation and RETScreen Expert Saputra, Andika; Kurniawan, Andre; Fernanda, Yolli; Karudin, Arwizet; Ahmed, Shabir
IJIMCE : International Journal of Innovation in Mechanical Construction and Energy Vol. 1 No. 2 (2024): IJIMCE : International Journal of Innovation in Mechanical Construction and Ene
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/ijimce.v1i2.27

Abstract

Energy efficiency is a crucial aspect of energy saving efforts. Energy efficiency is an important factor in reducing energy consumption and environmental impacts. One of the important steps that can be taken in achieving energy efficiency is to conduct an energy audit. An energy audit is a systematic process to evaluate energy use in a building and identify energy saving opportunities that can be done. RETSCreen Expert is one of the software that can be used for energy audits. This research focuses on analyzing the comparison between manual calculations and calculations using RETScreen Expert software on building energy efficiency. The factors used to analyze energy efficiency are air conditioning systems, room lighting systems, and the use of other electronic devices, over a one-year period. The analysis results show that there are differences in calculations between the use of manual methods and RETScreen Expert. The difference between manual calculation and RETScreen Expert is 15.42%. With this difference, it is assumed that manual calculations and calculations using RETScreen Expert do not have too much difference. The results of the energy audit also show that the air conditioning system (HVAC) is a major contributor to the building's energy consumption.
Design of Tools for Visualizing Thermodynamic Concepts in Steam Power Plant Trainer Processes with Web-Based Exploratory Data Analysis (EDA) Karudin, Arwizet; Leni, Desmarita; Lapisa, Remon; Kusuma, Yuda Perdana; Abbas, Muhammad Rabiu
JOIV : International Journal on Informatics Visualization Vol 8, No 3 (2024)
Publisher : Society of Visual Informatics

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62527/joiv.8.3.2139

Abstract

Thermodynamics is considered one of the most complex and challenging subjects for many students. This is primarily due to comprehending abstract concepts such as entropy, enthalpy, and energy flow, which involve complex mathematical equations and are rarely accompanied by tangible visualizations. This research aims to design, develop, and test a data-based visualization tool for thermodynamics testing results. This study collected and processed data from thermodynamics testing and simulations, such as the mini-steam power plant trainer used as a teaching aid in thermodynamics education, as the foundation for designing a data-based visualization tool for thermodynamics concepts. The visualization tool was created using the Python programming language integrated with the web-based Streamlit framework. The designed visualization tool encompasses various features, including automated data reporting, visualization of variable correlations using correlation heatmaps, Sankey diagrams for visualizing energy flow, and the capability to predict electrical output using machine learning integrated with three different machine learning algorithms. The visualization tool was evaluated by thermodynamics experts using a Likert scale. Based on the results obtained, the experts gave an average score of 4 in the information accuracy aspect in the good category. This shows that the information displayed in this visualization tool is by thermodynamics learning at Padang State University. In the visualization aspect, experts gave an average score of 4.25, which is in the Good and Very Good range. In alignment with the education aspect, experts gave an average score of 3.75, which is close to the good category. This shows that this aspect is considered suitable for studying thermodynamics, although shortcomings still need to be corrected. Experts gave a relatively high assessment of the Ease-of-Use aspect, with an average score of 4.5, with a range of Good and Very Good. This enables students to better understand complex patterns, cause-and-effect relationships, and parameter changes within thermodynamics concepts.
The freedom to learn-independent campus curriculum for shielded metal arc welding: A teaching module development Butar, David Beckham Butar; Erizon, Nelvi; Karudin, Arwizet; Primawati, Primawati
Jurnal Pendidikan Teknologi Kejuruan Vol 7 No 4 (2024): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jptk.v7i4.40223

Abstract

This study was triggered by the existing teaching modules for the Shielded Metal Arc Welding (SMAW) subjects taught at vocational high schools, which do not align with the Freedom to Learn-Independent Campus (FLIC) learning objectives, and do not provide a systematic organization. In order to enhance the learning experience, this research developed a new learning module that integrated Problem-based Learning (PBL), promoting critical thinking, and the practical application of theoretical concepts, following the FLIC curriculum. Utilizing a Research and Development (R&D) approach with the Instructional Design Institute (IDI) model, this study involved two welding instructors and four lecturers as validators to assess the content and usability of the module. The IDI model comprised three steps: instructional (define), development (develop), and institute (evaluate). The research findings regarding the validity assessment by subject matter experts yielded a final validity score of 0.924, while media and language experts provided a score of 0.936, meeting the valid criteria. The practical usability test of the learning module resulted in a score of 94%, indicating that it is highly practical for students to use as learning media. Based on the validity and practicality assessments of the developed module, it can be concluded that the SMAW learning module is highly practical to use as teaching media, aligning with FLIC curriculum.
Studi Simulasi Perpindahan Panas pada Kuningan dan Kayu dalam Pengujian Konduktivitas Termal Felia Maresta; Yolli Fernanda; Arwizet K; Andre Kurniawan
Journal of Innovative and Creativity Vol. 5 No. 3 (2025)
Publisher : Fakultas Ilmu Pendidikan Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joecy.v5i3.4506

Abstract

Penelitian ini bertujuan untuk menganalisis kinerja alat uji konduktivitas termal pada material padat melalui pendekatan simulasi numerik menggunakan perangkat lunak ANSYS Steady-State Thermal. Kajian ini didasarkan pada metode Comparative Cut Bar yang mengacu pada standar ASTM E1225, di mana dua batang logam identik digunakan sebagai meter bar untuk memastikan aliran panas berlangsung secara linier dan satu dimensi. Sumber panas menggunakan Catridge Heater bertenaga 300 W dengan sistem pengendali suhu REX C-100, sedangkan pendinginan dilakukan menggunakan Heat Sink Water Block untuk menjaga kestabilan temperatur. Simulasi dilakukan pada dua jenis material spesimen, yaitu kuningan dan kayu, dengan variasi suhu sumber panas sebesar 150°C, 250°C, dan 350°C. Hasil simulasi menunjukkan bahwa distribusi temperatur pada kuningan bersifat lebih merata dibandingkan kayu karena nilai konduktivitas termalnya yang lebih tinggi. Nilai konduktivitas termal rata-rata yang diperoleh dari hasil simulasi adalah 109 W/m·K untuk kuningan dan 0,12 W/m·K untuk kayu. Temuan ini mengonfirmasi bahwa material dengan konduktivitas termal tinggi mampu mentransfer panas lebih efisien, sedangkan efektivitas sistem Heat Sink berperan penting dalam menjaga kestabilan suhu dan mengurangi kehilangan panas selama proses pengujian.
Analisis Elemen Hingga Terhadap Ekspansi Termal dan Distribusi Tegangan Pada Alat Uji Konduktivitas Termal Fretina Sari; Yolli Fernanda; Arwizet K; Rifelino Rifelino
Journal of Innovative and Creativity Vol. 5 No. 3 (2025)
Publisher : Fakultas Ilmu Pendidikan Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joecy.v5i3.4508

Abstract

Penelitian ini bertujuan untuk menganalisis ekspansi termal dan distribusi tegangan pada alat uji konduktivitas termal tipe Comparative Cut-Bar Method menggunakan pendekatan Finite Element Method (FEM) melalui perangkat lunak ANSYS R2 2025. Analisis dilakukan untuk mengetahui pengaruh temperatur kerja dan beban mekanik terhadap kestabilan komponen utama alat sebelum tahap pembuatan prototipe. Geometri alat dirancang dengan komponen utama berupa heat source, meter bar, spesimen, heat sink, isolator, dan shell, dengan kondisi pembebanan termal pada suhu 200°C dan tekanan mekanis penjepit sebesar 0,1 MPa. Hasil simulasi menunjukkan bahwa distribusi temperatur menyebar secara aksial dari heat source menuju heat sink dengan suhu tertinggi sebesar 202,1°C. Nilai deformasi maksimum sebesar 0,0040569 mm terjadi pada spesimen kuningan, sedangkan deformasi terkecil terdapat pada heat sink sebesar 0,00000019885 mm. Nilai tegangan ekuivalen tertinggi sebesar 241,18 MPa terjadi pada heat source dengan yield strength 305 MPa, menghasilkan safety factor 1,26. Nilai ini menunjukkan bahwa seluruh komponen masih berada dalam batas elastis material dan aman terhadap deformasi plastis. Secara keseluruhan, alat uji konduktivitas termal hasil perancangan menunjukkan performa struktural yang baik dan stabil terhadap pengaruh temperatur kerja maupun beban mekanik. Hasil penelitian ini dapat dijadikan dasar dalam proses optimasi desain serta pembuatan prototipe fisik alat uji konduktivitas termal berbasis metode Comparative Cut-Bar.
Evaluation of the One Heart Education Program in the Motorcycle Engineering and Business Expertise Competency Nogi Handepi; Wakhinuddin; Hasan Maksum; Arwizet K
Jurnal Penelitian Pendidikan IPA Vol 11 No 1 (2025): January
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i1.9772

Abstract

Vocational education plays a critical role in preparing students to meet industry demands and enter the workforce effectively. This study aims to evaluate the One Heart Education Program in the Motorcycle Engineering and Business expertise competency at SMKN 1 Luak District, focusing on context, input, process, and product aspects, using the CIPP evaluation model. The study examines whether the program has been managed optimally. Employing a mixed-method approach, the research uses purposive sampling, involving 36 respondents, 26 for quantitative data and 10 as qualitative informants. Data collection methods include questionnaires and interviews. The evaluation results show that the program achieved an overall score of 72.24, categorized as sufficient, indicating suboptimal management. In detail, the context aspect related to program objectives is rated as poor, though the environmental aspect is good. The input, process, and product aspects are also found to be lacking. Key recommendations include optimizing the context aspect by refining program goals, adopting a centralized approach in the input aspect to explore students’ potential, enhancing the learning process in the process aspect to better align with industrial standards, and improving outcomes in the product aspect. These improvements aim to enhance the overall effectiveness and impact of the One Heart Education Program.
Development of Jobsheet Based on Collaborative Project Based Learning in Lathe Machining Engineering Subjects Ikhsan Dani Nugraha; Arwizet Karudin; Ambiyar; Refdinal
Jurnal Penelitian Pendidikan IPA Vol 11 No 7 (2025): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i7.11350

Abstract

Effective practical learning in vocational education requires instructional tools that support collaboration and contextual problem-solving. Jobsheets integrated with Collaborative Project-Based Learning (CPjBL) are expected to address this need in Lathe Machining subjects. This study employed a modified 4D development model (Define, Design, Develop, Disseminate) to create a CPjBL-based jobsheet. The research involved 11th-grade Machining Engineering students at SMK Negeri 5 Padang, selected via purposive sampling. Data collection instruments included expert validation sheets, student questionnaires, observation checklists, and pretest-posttest assessments. The jobsheet featured collaborative tasks such as producing lathed components, with defined roles and peer coordination. Validation scores indicated strong content and design quality: material experts (92%), media experts (87%), and teachers (95%). Practicality was rated highly by both teachers (92.33%) and students (84.67%). The effectiveness test showed a significant learning gain with an N-Gain score of 0.65 (high category). Observations revealed active student collaboration through defined group roles, communication, and joint accountability. The CPjBL-based jobsheet effectively enhanced student engagement and machining competencies. Its integration into vocational learning aligns educational practices with industrial expectations and supports the development of collaborative, work-ready graduates.
Co-Authors - Primawati -, Nasrullah - A, Yufrizal Abadi, Zainal Abadi Abbas, Muhammad Rabiu Abd. Aziz Abd. Aziz Abdillah Irfan Abdul Aziz Abdul Habib Arrasyidi Desky Ade Habibbullah Adel Lia Mardiana Adriansyah Adriansyah Afdal Faisal Aggrivina Dwiharzandis Agia Kulkarni Preti Agusriza Almalik Ahmad Arif Ahmad Rifai Sihombing Ahmad, Salamuddin Ahmed, Shabir Akbar, Yaumil Akhmad Rais Aldi Alfarizi Alfarizi, Aldi Alvien Khardin Ambiyar, Ambiyar Amir, Irfan Ananda, Opi Andika Putra ANDIKA SAPUTRA Andre Kurniawan Andre Kurniawan Andre Kurniawan Anjelika, Dea Qori Anuar, Bakri Anugrah, Pinto Aprianti, Maidinda Aqilvin Berliansyah Arafat, Andri Arafat, Andril Arief Juneirul Pratama Ariyanto, Dedi armizal yanriko Aryasandy, Nensy Asep Bunyamin Aulia Rahman Azel Rozandi Azmil Azman Bayu Rianto Berry Delfi Andra Budi Syahri Bulkia Rahim Bunyamin, Asep Butar, David Beckham Butar Carlen Muhammad Hendra Chrismondari, Chrismondari Daniel Fifaldi Nardo Darmawi . Delima Yanti Sari Denisa Putri Jadenis Desmarita Leni Deviya Aprilman Dionova, Aldi Doni Saputra Dori Yuvenda Efendi, Defindo Eko Indrawan Elfizon Endri Rizki Anugrah Erdi, Putri Nurhalimah Erik Ardinata Erizon, Nelvi Erlanda, Rendi Esa Hafizul A Fachrur Rozi Fachry Novrianda Fadhillah Riski Aisyah Nasution Fahrendra, Aqsal Fajri Ramadhan Fakhrur Rozi, Fakhrur Febri Prasetya Felia Maresta Fiqi Gusti Irawan Firman Omni Saputra Fitrah Qalbina Fretina Sari Giatman Gito Okto Rito FM Gusta Nanda Habibbullah, Ade Hadi, Farhan Hafiz Alfadri Ramadhan Haris Haris Hasan Maksum Hasanuddin WS Helga Yermadona Hendra Hendra Idra Putra Ika Parma Dewi Ikhsan Dani Nugraha Ikhsan, Ghufra Irfan Amir Irma Yulia Basri Irzal Irzal Jalil, Muhammad Jasman Jasman Jasman Jimmi Zamora Jonni Mardizal Junil Adri Kandena Putra, Tegar Khairi Habib Khairuni Delfi Anisa Kresna Adi Prasetya Krismadinata Krismadinata Krismadinata Krismadinata Krismadinata Krismadinata, Krismadinata kusuma, Yuda Perdana M. Agus Trian Putra M.Y. Setiawan Martias Martias Mega Risna Monica, Okzalia Muchlisinalahuddi Muchlisinalahuddi Muhammad Akhbar Muhammad Anwar Muhammad Aulia Ifsan Muhammad Bayu Septian Muhammad Ihsan Muhammad Iqbal Muhammad Lathif Mahendra Muhammad, Maghfiridhani Muharir Muharir Muharni, Riza Mulianti Mulyanti Muslim Muslim Nabawi, Rahmat Azis Nadia Utari Nasution, Ridhollah Naufal Nelvi Erizon Nidya Meliza Putri Nizwardi Jalinus Nofri Helmi Nofri Helmi Helmi Nogi Handepi Nurdin Hendri Nurfajri Nurfajri Nurfajri Nurfajri, Nurfajri Nuzul Hidayat, Nuzul Okky Syaifatul, Achmad Oky Erlangga Oky Erlangga Okzama, Rebi OSKAH DAKHI Peng, Lim Hooi Primawati Primawati, Primawati Purnama, Andreadi Purwanto, Wawan Purwantono Purwantono Purwantono Purwantono, Purwantono Putra, Idra Putra, Rido Putra, Romi Putri Nurhalimah Erdi Rahmad Robby Alzam Rahmat Afdhol Rahmat Syukri Ramfit Novari Randhy Alfarishi Rano Hanif Rebi Okzama Refdinal Refdinal Refdinal, Refdinal Refdinal, Refdinal Remon Lapisa Remon Lapisa Remon Lapisa Remon Lapisa Reynaldy Pasaribu Rifelino Rifelino Rio Ramadhan Rivanol Chadry Rizka Rizka Rizka Rizka, Rizka Rizki Agustian Rizki Ramadhan Nasution, Muhammad Rizky Ema Wulansari Robby, Muhammad Robert, Julio Ruzita Sumiati Ryan Ananda Simon Said Fuad Amry Salamuddin Ahmad Seprianto, Ekon Setiawan, Sepdirama Sharma, Jai Kumar Siswahyudianto Soretire Lanrewaju Kamorudeen Sri Rizki Putri Primandari Steven Thomas Anggriyanto Sukardi Sukardi Sukardi, Sukardi Supardi Supardi Suparno Suparno Suparno Syah, Muhammad Rayhan Syukri, Rahmat Toto Sugiarto Totoh Andayono Usin Usin Usmeldi Usmeldi Veri Budiawan Arham Vicky Prasetyo Wahyu Ananda Putra Wahyudi Fachrul Syafra Wakhinuddin WAKHINUDDIN SIMATUPANG Wanda Afnison Waskito Waskito Waskito, Waskito Winaldi Alfonis Wulansari, Rizky Ema Yandra, Muvi Yanto, Doni Tri Putra Yazmendra Rosa Yoga Novrialdy Yolli Fernanda Yovindra, Difa Yufrizal A Yufrizal Yufrizal Yulira Emputri Yurika Putri Zainal Abadi Zainal Abdi Zulvani Adha