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All Journal Journal of Mechanical Science and Engineering AUSTENIT Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Jurnal Mechanical Jurnal Teknik Kimia Unram Journal of Community Service (UJCS) SRIWIJAYA JOURNAL OF ENVIRONMENT Makara Journal of Science International Journal of Mechanics, Energy Engineering and Applied Science (IJMEAS)
Agung Mataram
Universitas Sriwijaya
Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences

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Journal : AUSTENIT

 1 
COMPOSITE MATRIX POLYESTER REINFORCE FIBRESKIN GELAM; PREPARATION AND MECHANICAL PROPERTIES Mataram, Agung; Rizal, Samsul; Zamheri, Ahmad
AUSTENIT Vol. 7 No. 1 (2015): AUSTENIT: April 2015
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (478.86 KB)

Abstract

Gelam (melaleuca leucandendra) is one plant that is widely available in South Sumatra potential into cellulose extraction. His plant is widely used for building materials and wood products processed the rest of the powder timber furniture industry. While, the skin of this plant is not used for anything. In fact, from  the structure of the skin that have fiber, skin of gelam  has the potential to be a valuable product, one of them with a matter in the form of composite reinforcement. While today's technology demands urgent environmental friendly technology product makers, especially friendly to the environment. The analysis conducted in this study utilizes softwood bark fiber serves as reinforcement to resin volume fraction ratio : Resin 100% : Filler 0%(A), Resin 90% : Filler 10% (B) Resin 80% : Filler 20%(C), Resin 70% : Filler 30%(D), Resin 60% : Filler 40% (E). Observed characteristics are kekutan composite tensile and impact strength. On average the highest tensile stress is the value obtained from the variation of the volume fraction of the specimen D (70% resin: 30% fiber) that is equal to 17.96 N/mm2, while the average value obtained from the lowest voltage variation of the volume fraction of the specimen B (90 % resin: 10% fiber) that is equal to 12:35 N/mm2. The average value of tensile strain obtained specimens A, B, C, D and E are the same, namely 0.68%. High MOE happens to specimens B, C and E, it indicates that the greater the value of the modulus of elasticity of the material is more difficult to increase the length, in this case the smallest specimen D modulus of elasticity. The average value of the energy required to break the specimen is equal to the highest Joule 34.728, obtained from the variation of the volume fraction of specimen D (70% resin: 30% fiber).
STUDY OF EXHAUST GAS RESIDUAL HEAT CONVERSION HRSG PLTGU KERAMASAN TO ELECTRICAL ENERGY WITH GENERATOR THERMOELECTRIC TECHNOLOGY Firmansah, Hari; Bizzy, Irwin; Mataram, Agung; Sipahutar, Riman
AUSTENIT Vol. 15 No. 2 (2023): AUSTENIT: October 2023
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/austenit.v15i2.6745

Abstract

The Heat Recovery Steam Generator (HRSG) is a combination of a Gas Power Plant (PLTG) and a Steam Power Plant (PLTU), this plant utilizes exhaust gas from the PLTG to produce steam as the working fluid in the PLTU. The residual heat from the heating process at the HRSG is channeled into the chimney, and the remaining heat from the exhaust gas can be converted into electrical energy with the Thermoelectric Generator (TEG) module. This research was carried out by installing the TEG module in series on the surface of the HRSG chimney wall, using laboratory scale measurements. The heat source uses a heater with a total power of 2,000 W. The research results show that the TEG module can convert the residual heat energy of the exhaust gas from the HRSG chimney into electrical energy. Four TEG modules mounted on the chimney surface can generate a voltage of 0.83 V and a maximum power of 2.79 mW. These results indicate that the TEG module is an opportunity to convert heat energy into electrical energy for further development.
ANALISIS KARAKTERISTIK MEMBRAN PENGOLAHAN AIR DARI BAHAN POLYETHERSULFONE DENGAN PENAMBAHAN PERAK NITRAT Agung Mataram; Nasution, J.D; Bizzy, I; Mohruni, A.S; Rizal, S; Pataras, M; Kurnia, A.Y; Kurnia, R.D; Jambak, M.I; Bactiar, M; Sutanto, H
AUSTENIT Vol. 16 No. 1 (2024): AUSTENIT: April 2024
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/austenit.v16i1.8614

Abstract

In this research, the membrane was made from polymers made from Polyethersulfone (PES), Silver Nitrate (AgNO3) strengthening agent, and additional solvent N,N-Dimethylformamide (DMF). The comparison in each sample is 1.5wt%, 2wt%, and 2.5wt%. The solution is connected to DC electricity with a voltage of 15000V for 30 seconds. The tensile test shows that as the mixture concentration increases, the membrane tensile strength or the membrane's ability to withstand loads tends to decrease, where the PES@AgNO3 membrane with a concentration of 1.5wt% has the highest average tensile strength value, namely 5.74206 MPa, then the value The lowest average tensile strength was found in the PES@AgNO3 membrane with a concentration of 2.5wt%, namely 3.07480 MPa. The decrease in the tensile strength value was caused by the uneven distribution of pores and agglomeration formed so that when the tensile test was carried out the membrane became more brittle and breaks easily. In the CWP test, there was a significant decrease in flux results with variations in membrane concentration, where when the PES@AgNO3 membrane mixture concentration was 1.5wt%, the highest flux value reached 3.88797 L.m-2.h-1.bar-1, inversely proportional to the increasing the concentration of the membrane mixture, namely 2.5wt%, obtained the lowest flux value, namely 1.01345 L.m-2.h-1.bar-1.
Co-Authors A.F. Ismail Aditya, B. B. Aldi, Muhamad Abel Kirana Alian, H. Alisya, Rona Almafie, Muhammad Rama Amrifan Saladin Mohruni Anisya, N. Bactiar, M Baehaqi Bizzy, I Dani, Rahma Elsa Rama Lumban Gaol Firmansah, Hari Gaol, Elsa Rama Lumban Helmy Alian Hermansyah Hermansyah Hermansyah Ida Sriyanti Idjan, Meutia Kamilatun Nuha Ap Irsyadi Yani Irwin Bizzy Ismet Ismet, Ismet Jambak, M.I Kurdiati, Lintang Auliya Kurnia, A.Y Kurnia, R.D Leni Marlina Ludiansyah, Anggi Lugantha Perkasa M. Badaruddin M.I. Jambak, M.I. Mediana, Meta Meta Mediana Mohruni, A.S Mohruni, A.S. Nanda Yusril Mahendra Narwi Panggar Besi Nasution, J. D. Nasution, J.D Nukman Nukman Pataras, M Pataras, M. Praja Dilla Atos Qomarul Hadi Riman Sipahutar Rizal, S Rizal, S. Romli Romli, Romli Sanjaya, Muhammad Rudi Subriyer Nasir Subriyer Nasir Susi Susanti Susi Susanti Sutanto, H Syahputri, Selvia Mariska Zamheri, Ahmad