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Analisis Performa Kampas Rem Rekayasa Ramah Lingkungan: Peran Phenol Formaldehyde dan Aditif Biokomposit Bustomi, Ahmad; Nur, Hamid Ramadhan; Muhammad, Rouf; Zaman, Mochamad Nuruz
Jurnal Teknik Mesin Vol 17 No 2 (2024): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.17.2.1623

Abstract

The issue of environmental damage is increasingly becoming a concern of the global community, including in the automotive industry. The use of environmentally friendly materials and the reduction of dependence on mineral-based or synthetic materials have become challenges that need to be overcome. Brake pads, as one of the components that have a vital role in a motor vehicle, are generally made of heavy metal materials, asbestos, and synthetic resins that can pollute the environment during the production process. The use of environmentally friendly raw materials such as wood powder, cocopeat and coconut shell carbon is an alternative in the brake pad production process. This study aims to analyze the performance of brake pads made of phenol formaldehyde with the addition of environmentally friendly biocomposites in the form of wood powder, cocopeat and coconut shell carbon. The method used is an experimental laboratory designed to evaluate the friction coefficient, wear rate, and microstructure of materials through Scanning Electron Microscopy (SEM). The results of the study show that this biocomposite brake pad has good wear resistance at high temperatures, especially with the carbon content of coconut shells which helps improve thermal stability. However, the value of the friction coefficient of brake pads still does not meet the minimum standard set by the Indonesian National Standard (SNI) 09-0143-1987, which indicates that this material is not yet fully feasible for automotive applications with high friction demands. Further research is needed to optimize the composition of materials, especially in increasing the friction coefficient to match industry standards.
Konveyor dan Pendinginan dalam Pengasapan Ikan Semi Otomatis: Sebuah Pendekatan Technopreneurship untuk Meningkatkan Kualitas Produk Ismail, Edy; Alghozi, Haidar Abroru; Sugiyarto, Sugiyarto; Nur, Hamid Ramadhan; Ramadhan, Muhamad Fajar; Abdurahman, Abdurahman; Mulyono, Mulyono; Trisyono, Trisyono
Jurnal Mekanik Terapan Vol 6 No 3 (2025): Desember 2025
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/jmt.v6i3.8055

Abstract

The fish smoking industry in Wonosari Village, Demak Regency, produces around 20-25 tons daily, relying on traditional methods that often result in inconsistent quality and compromised hygiene. This study seeks to boost efficiency and product quality by introducing semi-automatic smoking technology powered by technopreneurship principles. The technology integrates conveyor systems and rapid cooling to streamline the smoking process. Using an experimental approach with a technopreneurship twist, the research team collected data through observations, interviews, and prototype testing at Sentra Asap Indah. The testing focused on temperature control, smoking duration, and product quality analysis, including texture, aroma, and food safety. The prototype demonstrated significant efficiency gains, cutting smoking time by 30% and standardizing the process. The rapid cooling system successfully brought the fish temperature down from 80°C to 30°C within 30 minutes, a crucial step in preventing bacterial growth and preserving texture. The overall quality of the smoked fish, in terms of color, taste, and aroma, showed consistent improvement. By integrating conveyor systems for process standardization and rapid cooling for enhanced food safety, this technopreneurship initiative has the potential to increase the competitiveness of local smoked fish products and drive business sustainability.
Pemberdayaan Masyarakat Pesisir Demak melalui Keterampilan Perawatan Mesin Perahu dan Digitalisasi Produk Nur, Hamid Ramadhan; Mulyono, Mulyono; Zaman, Mochamad Nuruz; Ismail, Edy; Mubarok, Rizky Salsabil; Wardhana, Daffa Dwi
Jurnal Pengabdian Masyarakat Progresif Humanis Brainstorming Vol 9, No 1 (2026): Jurnal Abdimas PHB : Jurnal Pengabdian Masyarakat Progresif Humanis Brainstormin
Publisher : Politeknik Harapan Bersama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30591/japhb.v9i1.9829

Abstract

Program pengabdian kepada masyarakat dilaksanakan di Desa Surodadi, Kabupaten Demak, yang memiliki potensi wisata bahari berupa Pulau Arnavat dan produk olahan laut masyarakat pesisir. Permasalahan utama yang dihadapi mitra adalah keterbatasan strategi promosi digital, kurangnya konten visual yang menarik, rendahnya keterampilan pengelolaan media digital, serta keterbatasan kompetensi teknis dalam perawatan mesin perahu wisata yang berdampak pada keselamatan transportasi laut. Tujuan dari program ini adalah untuk meningkatkan kapasitas Pokdarwis Surodadi Berkembang melalui pelatihan digital marketing dan pelatihan teknis perawatan mesin perahu wisata. Metode pelaksanaan dilakukan melalui enam tahap, meliputi identifikasi masalah, sosialisasi program, pelatihan, penerapan teknologi, pendampingan, dan evaluasi. Evaluasi efektivitas menggunakan metode N-Gain Score yang membandingkan pre-test dan post-test peserta. Hasil pengabdian menunjukkan nilai N-Gain Score sebesar 0,747 atau 74,898%, yang termasuk kategori tinggi. Hal ini membuktikan bahwa program pelatihan yang dilakukan efektif dalam meningkatkan keterampilan peserta baik di bidang digital marketing maupun perawatan mesin perahu wisata. Dengan demikian, program ini mampu mendukung penguatan promosi wisata desa, pengembangan ekonomi lokal, serta peningkatan aspek keselamatan wisata bahari secara berkelanjutan
DIGITAL INNOVATION IN AUTOMOTIVE EDUCATION : IMPROVING COLLABORATION SKILL OF STUDENT USING INTERACTIVE FLIPBOOK Kunesa, Faisal Anas; Warju, Warju; Wailanduw, A. Grummy; Nur, Hamid Ramadhan
LEARNING : Jurnal Inovasi Penelitian Pendidikan dan Pembelajaran Vol. 6 No. 2 (2026)
Publisher : Pusat Pengembangan Pendidikan dan Penelitian Indonesia (P4I)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51878/learning.v6i2.9194

Abstract

  Students in the twenty-first century need to be able to work together effectively and be actively involved in their own education. Creating interactive learning material based on flipbooks is one way to bolster these abilities. The purpose of this research is to investigate how students' collaborative abilities are impacted by the use of flipbook media and to document their reactions to the created materials. The researchers in this study used a quasi experimental (group posstest design), which meant that only one set of students received the instructional materials (flipbooks) and the associated activities. An observation sheet for teamwork abilities and a questionnaire for student feedback made up the study tools. After using flipbook media, students cooperation abilities significantly improved, as shown by a significance value of 0.000 < 0.05 in the comparative test on collaboration skills. In addition, the reliability test yielded a Cronbach's Alpha score of 0.846, reflecting strong reliability, and the validity test showed that all ten questionnaire questions had correlation coefficients higher than 0.361, proving that all items were valid. Evident from these results, the flipbook medium was well-received by the student. Thus, the created flipbook-based learning material is well-received and useful for improving students teamwork abilities and receives positive responses, making it suitable for use as an interactive learning medium in twenty-first century learning.   ABSTRAK Siswa di abad ke-21 perlu mampu bekerja sama secara efektif dan terlibat aktif dalam pendidikan mereka sendiri. Membuat materi pembelajaran interaktif berbasis flipbook adalah salah satu cara untuk meningkatkan kemampuan ini. Tujuan penelitian ini adalah untuk menyelidiki bagaimana kemampuan kolaborasi siswa dipengaruhi oleh penggunaan media flipbook dan untuk mendokumentasikan reaksi mereka terhadap materi yang dibuat. Para peneliti dalam studi ini menggunakan desain kuasi eksperimental (desain posttest kelompok), yang berarti hanya satu kelompok siswa yang menerima materi pembelajaran (flipbook) dan aktivitas terkait. Lembar observasi untuk kemampuan kerja tim dan kuesioner untuk umpan balik siswa merupakan alat penelitian. Setelah menggunakan media flipbook, kemampuan kerja sama siswa meningkat secara signifikan, seperti yang ditunjukkan oleh nilai signifikansi 0,000 < 0,05 dalam uji komparatif pada keterampilan kolaborasi. Selain itu, uji reliabilitas menghasilkan skor Alpha Cronbach sebesar 0,846, yang mencerminkan reliabilitas yang kuat, dan uji validitas menunjukkan bahwa semua sepuluh pertanyaan kuesioner memiliki koefisien korelasi lebih tinggi dari 0,361, membuktikan bahwa semua item valid. Terbukti dari hasil ini, media flipbook diterima dengan baik oleh siswa. Dengan demikian, materi pembelajaran berbasis flipbook yang dibuat diterima dengan baik dan bermanfaat untuk meningkatkan kemampuan kerja tim siswa serta mendapat respons positif, sehingga cocok digunakan sebagai media pembelajaran interaktif dalam pembelajaran abad ke-21.