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All Journal Jurnal Energi Dan Manufaktur TEKNIK Rekayasa Mesin Jurnal METTEK (Jurnal Ilmiah Nasional Dalam Bidang Ilmu Teknik Mesin) Dinamika Teknik Mesin Jurnal Muara Sains, Teknologi, Kedokteran dan Ilmu Kesehatan
I Ketut Suarsana
Jurusan Teknik Mesin Universitas Udayana, Kampus Bukit Jimbaran Bali
Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics

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Journal : Dinamika Teknik Mesin

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Efek gaya tekan pembuatan hibrid komposit berpenguat SiCw/Al2O3 dengan wetting agent Mg terhadap sifat fisik dan mekanik K. Suarsana; N.P.G. Suardana; D.N.K.P. Negara; P.W. Sunu; A.A.A. Triadi
Dinamika Teknik Mesin Vol 11, No 1 (2021): Dinamika Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (355.243 KB) | DOI: 10.29303/dtm.v11i1.368

Abstract

The growing demand for metal-based materials in the manufacturing industry has prompted the development of composite materials that have better mechanical and physical properties than single materials. The development be done in order to obtain new materials that have better properties. The research was conducted using a powder metallurgy process, by varying the compressive force and holding time in order to determine the effect of the combination of compression and holding time on the mechanical and physical properties of composites. The variations in the compressive force are 20, 25, and 30 kN, with a holding time of 15, 30 and 45 minutes for each force. Research includes tests of density, porosity, hardness, wear and Scanning Electronic Microscope. The results of the density test showed that the highest density value was 2.982 gr/cm3 and the lowest porosity value was 13.074% at a compressive force of 25 kN, holding time of 45 minutes. The results of the highest hardness value 53.455  kg/mm2 at 30 kN, 45 minutes and the lowest wear value 2.15455E-05 gr at a pressure of 20 kN, 15 minutes. Based on the test results, the characteristics of the density are inversely proportional to the porosity, while the hardness and wear are influenced by the length of holding time in the moldof a composite using aluminum as a matrix needs too.
Analysis of the immersion time of nettle fiber in NaOH and silane on the hardness and toughness of composite hybrid materials K. Suarsana; I.G.P.A. Suryawan; P.W. Sunu; A.A.A. Triadi
Dinamika Teknik Mesin Vol 12, No 2 (2022): Dinamika Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v12i2.573

Abstract

The advantages of stinging nettle fiber (Urtica dioica L.) properties as a substitute for synthetic fibers for reinforcing composite materials are its strength and light weight compared to other natural fibers. This study aims to find the mechanical properties of hybrid composites reinforced with stinging nettle fiber based on immersion treatment of the fibers with chemical solutions. The mechanical properties studied include the hardness and toughness of the hybrid composite. This paper examines the effect of fiber immersion time in NaOH and Silane coupling agent solutions at concentrations of 3% and 9% which are used as reinforcement for hybrid epoxy resin composites. Variations of fiber immersion time in NaOH and Silane solutions: 30, 60, 90, and 120 minutes. Hybrid composite was produced by hand lay-up molding method. The results showed that the highest value of hardness was 88,254 VHN and toughness was 7,459 kJ/m2 at 9% immersion. NaOH solution can remove impurities and lignin in the fiber and Silane coupling agent can form strong bonds because it has a hydroxy group. Based on the results of the study, it can be concluded that the hardness and toughness of the hybrid composite reinforced by stinging nettle fiber has higher hardness and toughness at 9% NaOH and Silane treatment with immersion time of 120 minutes.
Co-Authors A.A.A. Triadi A.A.A. Triadi Anak Agung Istri Agung Sri Komaladewi Cok Istri Putri K D.N.K.P. Negara Dewa Ngakan Ketut Putra Negara I .G. P. Agus Suryawan I Gusti Ngurah Nitya Santhiarsa I Gusti Ngurah Priambadi I Ketut Jaya Lagawa I Made Astika I Made Rasta I Wayan Lega Suprapto I.G.P.A. Suryawan Komang Alit Kumara Jaya Komang Ayu Ratnawati M.Pd S.T. S.Pd. I Gde Wawan Sudatha . NPG Suardana P.W. Sunu Putu Lokantara Putu Wijaya Sunu Rudy Soenoko Sarmento, Francisco Sunu, P.W. Suprapto, I Wayan Lega Suprapto, Lega Wayan Nata Septiadi