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Characteristics of Natural Fiber Composites Materials Reinforced with Aluminum and Copper Powder for The Performance of Automatic Motorcycle Clutch Pad Riyadi, Riyadi; Kholil, Ahmad; Siregar, Januar Parlaungan; Dwiyati, Siska Titik; Pratama, Danang Budi; Setiawan, Ari; Syaefudin, Eko Arif
Automotive Experiences Vol 6 No 2 (2023)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.8878

Abstract

Currently, research on natural fiber composites (NFC) for automotive applications has attracted the attention of researchers and academics. Natural fibers such as coconut fiber and wood powder are mixed with metal materials such as aluminum and copper to obtain the composite characteristics of automatic motorcycle clutch pad materials. Coconut fiber and wood powder are suitable natural materials for composites and are easily obtained from waste. Natural fiber materials with metal reinforcement into composites are expected to produce materials suitable for friction materials such as clutch pads and brake pads with a good characteristic. This study aims to determine the characteristics of the coefficient of friction, wear, and hardness of NFC materials reinforced aluminum and copper powder for the performance of automatic motorcycle clutch pads. Experiments were carried out on various compositions of aluminum and copper powder. Tribometer testing was carried out to determine the friction coefficient and wear. Hardness testing using the Vickers method and testing the performance of automatic motorbikes with a chassis dyno test. The results show that the performances of the clutch pad with NFC-reinforced aluminum and copper show power and torque results that resemble the performances of genuine part materials in each operating cycle. The value of friction coefficient, wear, and hardness of this material are a value close to that of a genuine part clutch pad material. The improved performance of this material is expected to be considered in the manufacture of future clutch pads.
PENERAPAN 3D PRINTING DALAM MENGEDUKASI SISWA SEJAK DINI PADA PEMBUATAN BENDA TIGA DIMENSI UNTUK SISWA SEKOLAH DI MUARA GEMBONG Syaefudin, Eko Arif; Ahmad Kholil; Ragil Sukarno; Akhmad Saufan; Djoko Walujo; Muhammad Shafwan Muhadzdzib; Munjir Hakim
Prosiding Seminar Nasional Pengabdian Kepada Masyarakat Vol. 4 (2023): PROSIDING SEMINAR NASIONAL PENGABDIAN KEPADA MASYARAKAT - SNPPM2023
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Abstract State Senior High School 1 in Muara Gembong District is around 45 km from Jakarta State University. The partner's current problem is that students still don't have the skills to make 3-dimensional models using technological means. The Vocational schools as schools to develop quality graduate have a vision of making their students superior and specialy in creativity to making 3-dimensional models. Currently, the introduction of making 3-dimensional models quickly has begun to be introduced students from an early age, especially in superior schools in big cities. Limited school facilities such as 3D printers will be a weakness for students in learning how to make and analysis design real in 3-dimensional models quickly. The module is made simply to learn and can be made 3D object model its simple easy by vocational high school students. The output of this activity program is learning modules/slides on making 3-Dimensional objects for vocational high school students, intellectual property rights, online media publications and articles. Abstrak SMAN 1 di Kecamatan Muara Gembong berada sekitar 45 km dari Universitas Negeri Jakarta. Permasalah mitra saat ini adalah Keterampilan siswa dalam pembuatan model 3 dimensi dengan sarana teknologi masih belum memiliki. Sekolah SMK sebagai sekolah kejuruan memiliki visi menjadikan siswanya unggul dan kreatif dalam pembuatan model 3 dimensi. Saat ini pengenalan pembuatan model 3 dimensi secara cepat sudah mulai dikenalkan kepada siswa dari semenjak dini terutama di sekolah unggulan di kota besar. Fasilitas Sekolah yang terbatas seperti sarana 3D printer ini akan menjadi kelemahan siswa dalam mempelajari bagaimana pembuatan model 3 dimensi secara cepat. Modul dibuat secara sederhana dan bisa dibuat oleh siswa SMK / SMA. Luaran program kegiatan ini adalah modul pembelajaran pembuatan 3 dimensi untuk siswa SMK / SMA, HKI, publikasi media online dan artikel.
ANALISIS KESESUAIAN SARANA DAN PRASARANA TERHADAP CAPAIAN PEMBELAJARAN MATA KULIAH (CPMK) PRAKTIK DI PROGRAM STUDI PENDIDIKAN TEKNIK MESIN UNIVERSITAS NEGERI JAKARTA Syaefudin, Eko Arif; Bambang, Tri; Dewantoro, Dwi
Jurnal Pendidikan Teknik dan Vokasional Vol. 8 No. 1 (2025): Jurnal Pendidikan Teknik dan Vokasional
Publisher : LPPM, Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/JPTV.8.1.71

Abstract

Abstrak: Kondisi mesin yang layak, kelengkapan peralatan pendukung, serta kesesuaian fasilitas laboratorium dengan perkembangan teknologi merupakan faktor penting dalam mendukung pencapaian capaian pembelajaran mata kuliah praktik, khususnya Mata Kuliah Praktik Mesin Dasar. Penelitian ini bertujuan untuk menganalisis kesesuaian dan kelayakan sarana dan prasarana Laboratorium Produksi dalam memenuhi capaian pembelajaran mata kuliah (CPMK) Praktik Mesin Dasar pada Program Studi Pendidikan Teknik Mesin Universitas Negeri Jakarta. Penelitian ini menggunakan metode deskriptif kualitatif dan dilaksanakan pada September sampai dengan Desember 2023 di Gedung M Laboratorium Produksi Teknik Mesin Universitas Negeri Jakarta. Teknik pengumpulan data meliputi observasi, wawancara, dan dokumentasi untuk memperoleh gambaran faktual kondisi sarana dan prasarana laboratorium. Keabsahan data dijamin melalui triangulasi sumber dan teknik, serta peningkatan ketekunan peneliti dalam proses pengumpulan dan analisis data. Hasil penelitian menunjukkan bahwa sarana dan prasarana Laboratorium Produksi Teknik Mesin Universitas Negeri Jakarta belum mencukupi untuk memenuhi kebutuhan Mata Kuliah Praktik Mesin Dasar. Keterbatasan tersebut meliputi jumlah peralatan pendukung yang belum memadai, luas area kerja yang terbatas, serta kondisi mesin yang kurang optimal, seperti mesin yang tidak center, skala parameter mesin bubut yang sudah tidak terbaca, dan kondisi eretan mesin bubut yang kesat.Implikasi temuan ini menunjukkan bahwa ketidaksesuaian kondisi dan kelayakan sarana laboratorium berpotensi menghambat kelancaran proses praktik serta mengurangi ketercapaian kompetensi keterampilan mahasiswa sesuai CPMK yang ditetapkan. Oleh karena itu, diperlukan upaya peningkatan dan penyesuaian sarana dan prasarana laboratorium berbasis kebutuhan CPMK agar kualitas pembelajaran praktik dan kesiapan kompetensi mahasiswa dapat ditingkatkan secara optimal. Abstract: Adequate machine conditions, completeness of supporting equipment, and suitability of laboratory facilities with technological developments are important factors in supporting the achievement of learning outcomes of practical courses, especially the Basic Machine Practice Course. This study aims to analyze the suitability and feasibility of the Production Laboratory facilities and infrastructure in meeting the learning outcomes of the Basic Machine Practice course in the Mechanical Engineering Education Study Program, Universitas Negeri Jakarta. This study uses a qualitative descriptive method and was conducted from September to December 2023 in Building M of the Mechanical Engineering Production Laboratory, Universitas Negeri Jakarta. Data collection techniques include observation, interviews, and documentation to obtain a factual picture of the condition of laboratory facilities and infrastructure. Data validity is guaranteed through triangulation of sources and techniques, as well as increased researcher diligence in the process of data collection and analysis. The results of the study indicate that the facilities and infrastructure of the Mechanical Engineering Production Laboratory, Universitas Negeri Jakarta are not sufficient to meet the needs of the Basic Machine Practice Course. These limitations include inadequate supporting equipment, limited work area, and suboptimal machine conditions, such as machines that are not centered, unreadable lathe parameter scales, and rough lathe carriages. The implications of these findings indicate that the mismatch in the condition and suitability of laboratory facilities has the potential to hinder the smooth running of the practical process and reduce the achievement of student skill competencies according to the established LO. Therefore, efforts are needed to improve and adjust laboratory facilities and infrastructure based on LO needs so that the quality of practical learning and student competency readiness can be optimally improved.