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All Journal Jurnal Teknik Mesin Ethos Jurnal Pengabdian Kepada Masyarakat (Indonesian Journal of Community Engagement) Panrita Abdi - Jurnal Pengabdian pada Masyarakat CARADDE: Jurnal Pengabdian Kepada Masyarakat Jurnal Serambi Engineering Jurnal POLIMESIN Industrial Engineering Journal (IEJ) Jurnal Pengabdian Kepada Masyarakat (Mediteg) Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Jurnal Vokasi Journal of Welding Technology Jurnal Bakti Masyarakat Indonesia Jurnal Teknologi Jurnal Teknologi Kimia Unimal

Indra Mawardi

Jurusan Teknik Mesin Politeknik Negeri Lhokseumawe

Author-ID : 318355

Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

Published : 23 Documents Claim Missing Document

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Perancangan dan fabrikasi mesin extrusi single screw Sumardi Indra Mawardi
Jurnal POLIMESIN Vol 7, No 1 (2009): Februari
Publisher : Politeknik Negeri Lhokseumawe

Penelitian ini dilakukan dimulai dari desain sampai mesin ekstrusi dapat digunakan. Mesin ekstrusi yang dibangun adalah tipe single screw. Pada penelitian ini perubahan bentuk produk tersebut akan dianalisis dengan memvariasikan temperatur proses terhadap temperatur melting dari jenis plastik polypropylene. Temperatur proses yang digunakan sebagai variabel bebas pada penelitian ini adalah 165", dan 180”, C, dan putaran screw konstan 60 rpm. Bentuk produk adalah batangan silinder dengan ukuran die 5 mm. Dari hasil penelitian ini telah dibangun sebuah mesin ekstrusi single screw. Dengan menggunakan bentuk dan dimensi ekstruded sebagai indikator keberhasilan maka, temparatuer proses yang sesuai untuk mesin dengan single screw padaperbandingan L/D — 14 pada kisaran 180" C.Kata-kata kunci : Ekdtrusi, Single screw, plastik, polypropylene

Kajian perlakuan serat sabut kelapa terhadap sifat mekanis komposit epoksi serat sabut kelapa Indra Mawardi; Azwar Azwar; Amir Rizal
Jurnal POLIMESIN Vol 15, No 1 (2017): Februari
Publisher : Politeknik Negeri Lhokseumawe

Komposit adalah gabungan dari dua atau lebih material berbeda yang terdiri dari fiber dan matriks, penelitian ini menggunakan serat (fiber) serat sabut kelapa, dan matrik yang digunakan yaitu Epoxy Resin dan Epoxy hardener dengan merk Eposchon, dengan perbandingan 30:70. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh perlakuan serat sabut kelapa terhadap sifat mekanik dan juga untuk mengetahui nilai beban kejut dan beban lentur komposit epoksi yang berpenguat serat sabut kelapa yang mengalami perlakuan. Pada penelitian ini peneliti mengkaji kekuatan Impak dan Bending dari komposit serat sabut kelapa, dan pengaruh perendaman serat dalam larutan Alkali (NaOH) 5% selama 5 jam, serta blender dengan variasi waktu 10 menit, 20 menit, dan 30 menit. Standar pengujian Impak menggunakan standar ASTM E 23, sedangkan untuk pengujian Bending menggunakan standar ASTM D 790. Berdasarkan hasil dari kesimpulan yang didapat dari pengujian material komposit yang mempunyai harga Impak tertinggi yaitu komposit dengan perlakuan blender 10 menit yaitu sebesar 0.02 J/mm. Sedangkan untuk pengujian Bending mempunyai kekuatan bending tertinggi yaitu komposit dengan perlakuan blender 30 menit yaitu sebesar 88.68 Mpa. Kata kunci : Komposit, serat sabut kelapa, resin epoxy, perlakuan mekanis, uji impak, uji bending

Rancang bangun perkakas penarik bantalan perseneling Mawardi Mawardi; Indra Mawardi; Zaini AK
Jurnal POLIMESIN Vol 1, No 1 (2003): Agustus
Publisher : Politeknik Negeri Lhokseumawe

Kajian stabilitas termal bahan baku material insulasi panas berbasis serat alam: kayu kelapa sawit dan serat rami Indra Mawardi; Samsul Rizal; Sri Aprilia; M. Faisal
Jurnal POLIMESIN Vol 19, No 1 (2021): February
Publisher : Politeknik Negeri Lhokseumawe

The use of thermal insulation materials in buildings is an important topic in an effort to increase the efficiency of electrical energy consumption. Natural fiber-based thermal insulation material is an alternative to the synthetic fibers that are widely used today. It is important to know the thermal stability of the materials as the basis for its feasibility as a thermal insulation material. Palm wood (OPW) and ramie fiber (RF) have potential as raw materials for thermal insulation from natural fibers. This study aims to assess the thermal stability of oil palm wood and ramie fibers as raw materials for thermal insulation materials based on natural fibers. Oil palm wood particles and rami fiber were treated before being tested. Oil palm wood is soaked in hot water 1000C for 30 minute and ramie fibers in 5% NaOH solution at the same time. Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) tests were carried out to obtain the thermal characteristics of the two raw materials. Tests were carried out for both fibers, untreated and treated. TGA testing resulted in OPW and RF with treatment having better thermal stability than OPW and RF without treatment. OPW and FR with treatment have maximum thermal stability at temperatures of 3770C and 3990C. DSC analysis showed that OPW and FR with treatment produced peak temperatures at 4090C and 4080C respectively. The thermal stability of fibers will increase with treatment compared to untreated fibers.

Investigation of mechanical properties and dynamic characteristics of OPEFB Fiber Composite Zuhaimi Zuhaimi; Misran Misran; Indra Mawardi; Darmein Darmein; Nurlaili Nurlaili; Zaini AK; Hanif Hanif; Amir D
Jurnal POLIMESIN Vol 21, No 4 (2023): August
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v21i4.4247

Composite materials is increasingly experiencing an increa- sing trend, the manufacture of composites currently uses a lot of natural fiber reinforcement, Oil Palm Empty Fruit Bunches (OPEFB) fiber is a fiber that comes from oil palm empty fruit bunches waste that grows a lot in Indonesia and has the potential to be used as reinforcement in the manufacture of composites. With natural fiber reinforcement. The manufacture of composites in this study varied the fiber volume fraction by 5%, 15%, and 25%. Many previous studies on composite materials have focused on studying the physical and mechanical properties of composites. Even though damage to a structure or material is not only caused by static loads but also by dynamic loads. Vibration is a dynamic load experienced by material or structure, so it is necessary to determine the dynamic character of composite materials, one of the dynamic characteristics of materials is their natural frequency, the determination of the natural frequency in this study was carried out by using the finite element method in the ANSYS software. The results of the analysis in the form of tensile strength values and modulus of elasticity were obtained from tensile testing and dynamic characters in the form of natural frequencies and vibration modes were obtained from the analysis modal simulation process. From the results of the tensile test, it was found that the composite with a variation of 15% OPEFB fiber volume had the highest tensile strength and modulus of elasticity, as well as the results of the analysis modal simulation, a composite with 15% OPPEFB fiber, had the highest natural frequency value among the other two variations.

Co-Authors - Hanif - Ramli A. Jannifar Aljufri Aljufri Amalia, Ismi Amir D Amir Rizal Arhami, Muhammad Azwar Azwar Darmein Darmein Fakhriza - Guntur Syahputra Hamdani, Hamdani Hanif Hanif Hanif Hanif, Hanif Hasrin Hasrin Indrawati Indrawati Irwin Syahri Cebro M. Faisal Mawardi Mawardi Misran Misran Muhammad Hatta Muhammad Muhammad Nahar Nahar Nurdin Nurdin Nurlaili Nurlaili Rizal, Samsul Safaruddin Saifuddin . Saifuddin Saifuddin Samsul bahri Sri Aprilia Taufik Taufik Turmizi Turmizi Yuniati, Yuniati Zainal Abidin Zainal Abidin Zaini Zaini AK Zuhaimi Zuhaimi Zuhaimi Zuhaimi Zul Saputra Zulkarnaini Zulkarnaini Zulkifli Zulkifli

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