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All Journal Jurnal Teknik Mesin Rotasi Jurnal Teknologi Jurnal Mechanical Media Mesin: Majalah Teknik Mesin VANOS Journal of Mechanical Engineering Education Journal of Science and Applicative Technology Metal Indonesia AKSIOLOGIYA : Jurnal Pengabdian Kepada Masyarakat Jurnal Elemen JURNAL CRANKSHAFT Infotekmesin STEAM Engineering : Journal of Science, Technology, Education And Mechanical Engineering J-Proteksion: Jurnal Kajian Ilmiah dan Teknologi Teknik Mesin Scientific Journal of Mechanical Engineering Kinematika Journal of Metallurgical Engineering and Processing Technology Journal of Mechanical Engineering Perwira Journal of Science and Engineering (PJSE) Journal of Applied Mechanical Technology (JAMET) AMMA : Jurnal Pengabdian Masyarakat Jurnal Foundry Perwira Journal of Community Development (PJCD) Journal of Sciencce Technology and Visual Culture Jurnal Alat Berat Journal of Industrial and Mechanical Engineering
Fajar Paundra
Institut Teknologi Sumatera
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Nursing Social Sciences

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Journal : rotasi

 1 
Effect of Webbing Angle on Tensile and Bending Strengths in Human Hair Fiber Reinforced Composites Paundra, Fajar
ROTASI Vol 24, No 1 (2022): VOLUME 24, NOMOR 1, JANUARI 2022
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/rotasi.24.1.30-35

Abstract

Composite is a combination of two or more materials that have different basic properties. This study aims to analyze the effect of woven angle on hair fiber composites on tensile and bending strength. The composite is composed of polyester resin and human hair waste. Hair was soaked in 5% NaOH solution for 1 hour and woven with angle orientation 0°/90°, 15°/105°, 30°/120° and 45°/135°. The process of making composites is made by the Compression Molding method for 24 hours. After making the composite, a density test was carried out with the ASTM C271 standard, tensile test with ASTM D3039 standard and bending test with the ISO 178 standard. The results of the density test obtained an increase in the density value with the lowest density value of 0.82 g/ml and the highest 0.85 g/ ml to produce a lighter composite. Then the tensile test results show the highest tensile strength value of 16.47 MPa which occurs at an angle of 0°/90°. The results of the bending test obtained an increase in bending strength with the highest bending strength value of 47.1 MPa which occurred at an angle of 0°/90°.
The Effect of Pressure Variations on the Characteristics of Coconut Shell Based Briquettes Using Tapioca Starch Adhesive Devia Gahana Cindi Alfian; Marone J Tambunan; Fajar Paundra; Dicky J Silitonga; Lathifa Putri A; Muhammad Syaukani
ROTASI Vol 25, No 3 (2023): VOLUME 25, NOMOR 3, JULI 2023
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/rotasi.25.3.23-32

Abstract

The very limited availability of energy on this planet is one of the main problems that concerns almost all countries. The presence of emergency energy indicates that energy usage is very high. Therefore, encouraging the use of new and sustainable energy sources is of utmost importance. Biomass energy can be the answer to overcoming the limitations of decreasing fossil assets, especially through the production of charcoal briquettes. Biomass energy is derived from plants or easily traceable natural materials that are abundant, such as wood waste, rice husks, bagasse, and coconut shells. Coconut shells, for example, can be a primary ingredient for making charcoal briquettes, using tapioca flour or starch as an adhesive. The briquettes can be produced using pressure variations of 50 kg/cm², 60 kg/cm², and 70 kg/cm², with a drying temperature of 100°C for 3 hours. The recommended ratio for making charcoal briquettes is 3 parts coconut shell to 1 parts tapioca flour adhesive. The purpose of this study is to compare the briquettes produced with coconut shell and tapioca flour adhesive to the SNI Briquette standard No.1/6235/2000. For the conducted tests, the results were as follows: the water content was 6.06%, the ash content was 5.9695%, the carbon content was 43.5946%, and the calorific value was 34,182.6808 calories. Additionally, the substance score yield was 26.845%, and the combustion rate was 0.12179 g/minute.
Co-Authors A. Juan Abdu Halim Wibowo Abdul Abdul Abdul Aziz Abdul Muhyi Abdul Muhyi Abdul Muhyi Afif Haidar Hasibuan Agung Purnomo Agung Rizky Ahmad Frantoni Aji Ahmad Kurniawan Ahmad Mukhlisin Ahmad Waldi Chaniago Akbar Reza Wahyudin Alan Maulana Yusuf Aldrein T.P.R. Tambunan Alex Noerdin Alwi Kenedi Sitepu Amelia Oktavia Anas Maulana Andhyka Jaya Saputra Andi Andi Andi Rahadiyan Wijaya Andre Cahyadi Andreas Yakobus Situmorang Annisa Indah Setyawati Antero Jona Vialin Anugrah Nan Agung Anung Raihan Apni Tito Maulana Ariq Athallah Arnold Aditya Pratama Arsi Maulana Ahmad Aston Samuel Situmorang Aufa Azfa Wahyu Bayu Fajar Nugroho Berkat Saut Manjadi Purba Bimo Panji Riyanto Bintang Ramadhan Hermnato Budi Prasetiyo Catur Pramono CH. Galen Amadeus Chistoforus Devis Arifin Danang Istanto Daniel Butar-Butar Daniel Christover Munte David Valentino Derman Francisco Siregar Devia Gahana Cindi Alfian Dicky J. Silitonga Dicky Januarizky Silitonga Dika Ardiansyah Dimas Aldyansyah Dimas Maulana Aji Dion Darmawan Duwi Hariyanto Eko Ardiansah Eko Pujiyulianto Eko Pujiyulianto Eko Pujiyulianto Eko Pujiyulianto Fajar Aji Nugraha Fajar Perdana Nurrullah Fajar Perdana Nurullah Farid Nanda Syanur Farid Nanda Syanur Febri Budi Darsono Febryan Utama Putra Felderico Andreas Sitanggang Ferly Fikri Ramadhan Firman Sri Bagaskara Firman Sri Bagaskara Fuad Hakim Fuad Mulkan Al Machzumy Fuad Mulkan Al Machzumy Gabriel Xaverius Englando Rajagukguk Gigih Tujo Pradibyo Gufron Zaidan Attuttaqwa H.T. Yudhistira Hadi Teguh Yudistira, Hadi Teguh Hamid Abdillah Handoyo Handoyo Hasan Bisri Bisri Herry Wardono I Gede Riyan Oka Saputra I Gusti Bagus Budi Dharma I Made Wijana Dwipa Ariyasa Ilham Ramadhan Siregar Ilhan Manzeis Imam Prabowo Imam Prabowo Indriyani Indriyani Irza Sukmana Joy Rivaldo Aritonang Jukepri Brain Meliala Kardo Rajagukguk, Kardo Kevin Saputra Kevin Vilhan Loveriando Khairul Umam Al Aziz Kisna Pertiwi Lathifa Putri A Leonardo Dicaprio Purba Lorensius Mikael Sahattua Sihombing Lukman Triawan M Ihsan Ar-Rozaq M. Agyp Hujjah Aprilian M. Fahan Sidik M. Muhibbul Khairi M. Rafi Kurniawan Manuel Elroi Markus Pasaribu Marone J Tambunan Martha Arum Nugraheni Moh. Fadhilah Ramadhan A Mohamad Riza Abidin Mufidah, Zunanik Muhamad Fatikul Arif Muhammad Alfarizi Yoga Pratama Muhammad Azel Darian Muhammad Fadhil Aulia Harbie Muhammad Fadil Muhammad Fadil Adrian Muhammad Farhan Sidik Muhammad Farhan Sururi Muhammad Farouq Abdul Aziz Muhammad Firjatullah Suhaeri Muhammad Hasbi Pratama Muhammad Ichsanudin Muhammad Ilham Fakhri Athallah Muhammad Irgi Bachtiar Muhammad Kinarya Saka Muhammad Maulana Al Hafidh Muhammad Rama Aditya Muhammad Razi Scoriyanto Muhammad Ridho Hilman Muhammad Rizky Hikmatullah Muhammad Syaukani Muhsin Muhsin Muhsin Muktivani Swastiko Nanang Adi Saputra Nani dkk. Mulyaningsih Nia Sastra Permata Nurdin, Akhmad Nurhadi P. Elmiawan P. Yunesti Puguh Elmiawan Puguh Elmiawan Puguh Elmiawan Puguh Elmiawan Putra Andi Kolala Putty Yunesti Rahmat Hidayat Rangga Bayu Pranajaya Ray Zaki Samudra Rene Hario Galih Rene hario galih Rico Aditia Prahmana Ridho Agustian Rifky Ardiansyah Rivaldo Rivaldo Rizky Candra Purnama Robertus Nicko Roni Hidayat Sabar Sahat Parulian Panjaitan Saka Mahidaya Hutama Salman Al Farisi Sastra Kusuma Wijaya Setya Drana Harry Putra Setya Pramana Hasibuan Sigit Setiawan Sri Hastuti Syamsul Hadi Tardho Hakim Triyono Triyono Wafiudin Romadhoni Widi Reeh Adi Agung Yohanes Alexander Romeo Napitulu Yonathan Ito Yosua Sinambela Yudi Kurnaiawan Yusuf Bahtiar Zian Millenio