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All Journal JPSE (Journal of Physical Science and Engineering) Metal Indonesia Jurnal TAMBORA JURNAL TEKNIK Specta Journal of Technology Jurnal Konversi Energi dan Manufaktur Bima Abdi: Jurnal Pengabdian Masyarakat Jurnal Pijar MIPA JURNAL TEKNIK INDUSTRI Hexagon AMMA : Jurnal Pengabdian Masyarakat
Fauzi Widyawati
Metallurgical Engineering Study Program, Faculty Of Environmental And Mineral Technology, Sumbawa University Of Technology
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology 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 Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Nursing Physics Other

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Journal : Jurnal TAMBORA

 1 
PEMANFAATAN SERAT SISAL (agave sisalana L.) DAN LIMBAH PLASTIK PET UNTUK PEMBUATAN BATA RINGAN CLC (CELLULAR LIGHTWEIGHT CONCRETE) Widyawati, Fauzi
Jurnal TAMBORA Vol. 4 No. 1 (2020): EDISI 9
Publisher : Wakil Rektor 3, Direktorat Pengabdian kepada Masyarakat dan Publikasi, Universitas Teknologi Sumbawa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (795.349 KB) | DOI: 10.36761/jt.v4i1.566

Abstract

Some time ago in the region of West Nusa Tenggara (NTB) experienced earthquake shocks which shocked the community so that many buildings were destroyed and razed to the ground. While the current use of plastic waste is a concern of the community and government, especially in the NTB region. So this background is the basis of research to make earthquake-resistant lightweight bricks by utilizing PET plastic waste to replace coarse aggregate as a mixture and use sisal fiber as a reinforcement to strengthen the strength of lightweight bricks. The purpose of this research is to find out how to make light brick type CLC (Cellular Lightweight Concrete) by utilizing PET plastic waste and sisal fiber, to determine the effect of the addition of PET plastic and sisal fiber to the mechanical properties of light bricks, and to determine the optimum composition of the addition of plastic PET and sisal fiber in the manufacture of lightweight brick CLC. The use of PET plastic and sisal fiber produces brick with an average density of 1,830,419 kg / m3 for 1: 1 variation samples, 1,880 kg / m3 for 4: 1 variation samples, and 1,887,654 kg / m3 for 1: variation samples 4. Maximum compressive strength is achieved in 1: 4 variation samples ie samples with the addition of sisal fiber 4 times more than PET plastic. Based on the results of the measurement of the density of bricks, only the sample variation 1: 1 that meets the standards of SNI 2847-2013 light brick (1,140-1,840 kg / m3). The addition of sisal fiber which is 4 times more than PET plastic (sample variation 1: 4) has the highest compressive strength value of 8.5 MPa and is included in the category of lightweight brick quality I.
IDENTIFIKASI CACAT LASAN FCAW PADA FONDASI MESIN KAPAL MENGGUNAKAN METODE ULTRASONIC TESTING Widyawati, Fauzi; Marano, Lino
Jurnal TAMBORA Vol. 5 No. 2 (2021): EDISI 13
Publisher : Wakil Rektor 3, Direktorat Pengabdian kepada Masyarakat dan Publikasi, Universitas Teknologi Sumbawa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36761/jt.v5i2.1124

Abstract

Ultrasonic testing is one of the non-destructive inspection methods for welding results. The ultrasonic testing method has several advantages, namely it can be used to analyze the position of the defect in the object, both the depth of the defect and the dimensions of the defect, and it is an environmentally friendly method. Physical defects that are in solid objects of course cannot be known from direct vision so it is necessary to carry out an inspection of an object to see whether or not there are defects that occur in solid objects. Ultrasonic testing of the results of FCAW welding on the foundation of the ship's engine. FCAW welding is applied to the foundation with two types of welding positions, namely the overhead position coded P1 and the horizontal position coded P2. The test was carried out using a wave frequency of 4 MHz and using a 0° probe for analysis of defects in the area around the weld metal and a 70° probe for analysis of the weld metal. The tests were carried out using the ASME section V and ASTM E164 standards as the standard for determining defects. The test results at the P1 welding position found two types of defects, namely incomplete fusion defects with five welding points with the longest defect length of 40mm and porosity defects with two points with the longest defect length of 30mm. While the results of ultrasonic testing at the P2 welding position found two types of defects, namely slag inclusion defects with a defect length of 35mm and incomplete penetration defects with a defect length of 20 mm. The conclusion of ultrasonic testing is that the difference in welding positions is that the welding position greatly affects the quality of the welding results. The defects resulting from the welding position also vary.
PENGARUH VOLUME LIMBAH SERBUK KAYU JATI (TECTONA GRANDIS) TERHADAP DAYA SERAP AIR PADA KOMPOSIT PARTIKEL DENGAN MATRIKS EPOKSI Desiasni, Rita; Chandra, Rico; Widyawati, Fauzi
Jurnal TAMBORA Vol. 5 No. 2 (2021): EDISI 13
Publisher : Wakil Rektor 3, Direktorat Pengabdian kepada Masyarakat dan Publikasi, Universitas Teknologi Sumbawa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36761/jt.v5i2.1128

Abstract

The furniture industry is a company that utilizes forest products in the form of wood as the main raw material in the production process. The wood used by the furniture industry in Indonesia reaches 2.6 million m3 per year. The waste generated reached 54.24% of the total production. Sawmill waste generated as much as 1.4 million m3 per year. Based on field observations in several furniture industries in the Sumbawa Region, most industries produce sawdust waste that has not been used optimally, so that sawdust waste accumulates in the soil and decomposes which can trigger environmental pollution and water pollution. Teak sawdust waste has a high cellulose content so it plays an important role as a reinforcement raw material in the manufacture of particle composites. In this study using the hand lay up method of making composite particles by utilizing waste teak sawdust as raw material for reinforcement and epoxy matrix with volume variations of 30:70%, 40:60%, 50:50%, 60:40%, 70:30. %, to obtain quality composite characteristics. Water absorption obtained 14%, each composite specimen has met the standard of SNI 03-2105-2006. The results of physical tests on the water absorption of particleboard composites were the lowest at 0.48% at 30% powder volume with 24 hours immersion due to the wood powder being mixed and bonded evenly by the matrix so as to reduce voids, while the highest yield was 9.41% in 70% volume is due to the matrix not being able to bind evenly, causing voids to occur. It can be concluded that the increasing volume of powder and the length of time of immersion, the greater the percentage value of water absorption produced.
ANALISIS HUBUNGAN KANDUNGAN TOTAL MOISTURE, TOTAL SULPHUR DAN ASH CONTENT TERHADAP GROSS CALORIFIC VALUE PADA BATUBARA Anggreini, Dian; Bahtiar, Syamsul; Widyawati, Fauzi; Hidayat, Syamsul
Jurnal TAMBORA Vol. 5 No. 3 (2021): EDISI 14
Publisher : Wakil Rektor 3, Direktorat Pengabdian kepada Masyarakat dan Publikasi, Universitas Teknologi Sumbawa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36761/jt.v5i3.1316

Abstract

Most of the coal is used as fuel in power plants,cement industry and metal processing industry. Use of coal as fuelwill depend on the quality of the coal used. The main parameters thatdetermining the quality of coal is the calorific value. Meanwhile, the calorific value of a coalwill depend on several parameters, namely total moisture, total sulfur andash content. This study aims to determine the effect of the relationship betweenthe content of some of these parameters on the calorific value of a coal. Analysisperformed using the American Society for Testing and Materials (ASTM).The stages of this analysis include sample preparation, air dry loss testing, residualmoisture, total sulfur, ash content and gross calorific value. The results of the analysis showthat the higher the total moisture content, total sulfur and ash content, the higher thecauses the lower the calorific value of a coal.
SIFAT FISIK DAN MEKANIK KOMPOSIT PAPAN PARTIKEL BERDASARKAN VARIASI UKURAN SERBUK KAYU MAHONI (SWIETENIA MACROPHYLLA) SEBAGAI MATERIAL ALTERNATIF : PAPAN KOMPOSIT Rita Desiasni; Nur Azman; Fauzi Widyawati
Jurnal TAMBORA Vol. 7 No. 2 (2023): EDISI 19
Publisher : Wakil Rektor 3, Direktorat Riset, Publikasi dan Inovasi, Universitas Teknologi Sumbawa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36761/jt.v7i2.2714

Abstract

Sifat fisik dan mekanik material papan komposit dipengaruhi oleh ukuran partikel. Variasi ukuran partikel akan membentuk sifat fisik dan mekanik yang berbeda. Variasi ukuran yang digunakan yaitu 20 mesh, 40 mesh, 60 mesh dan 80 mesh. Perbandingan matrix dan partikel yaitu 70% : 30 % menggunakan metode hand lay-up. Pengujiannya terdiri dari uji fisik yaitu kerapatan dan pengujian mekanik yang terdiri dari Modulus of Rupture (MOR) dan Modulus of Elasticity (MOE). Hasil pengujian fisik kerapatan berada pada nilai 0.76 gr/????????3 – 0.84 gr/????????3, kerapatan terbaik pada ukuran partikel 80 mesh dengan nilai 0.84 gr/????????3. Secara keseluruhan kerapatan papan komposit pada semua sampel memenuhi standar JIS A 5908 (2003) rentang nilai kerapatan 0.4 gr/????????3 – 0.9 gr/????????3. Sedangkan Modulus of Rupture MOR tertinggi terdapat pada variasi 80 mesh dengan nilai 29.1 MPa dan hasil terendah pada uji Modulus of Rupture (MOR) papan komposit pada 20 mesh dengan nilai 8.4 MPa. Hasil MOR Papan komposit memenuhi Standar JIS A 5908 (2003) dengan standar minimal 7.8 MPa. Sedangkan untuk nilai MOE menunjukkan hasil Modulus of Elasticity (MOE) maksimal pada 60 mesh yakni 1155.9 MPa. Namun hasil pengujian MOE belum memenuhi standar JIS A 5908 (2003) yang memiliki standar minimal papan komposit sebesar 1961 MPa.
Co-Authors Amirin Kusmiran Andani Nurul Hidayah Angga Setiawan Anggina Kalara Bahtiar, Syamsul Chandra, Rico Dian Anggreini Dwi Nurul Fitriah Assyurah fatmawati hendrik fatma Hermanto, Koko I Putu Widiantara Imam Wierawansyah Eltara izzul islam Jayatri, Adella Ulyandana Kholida Tul Khairy Maksum, Hanni Malik Fajar Fatoni Marano, Lino Maulana Malik Ibrahim Muhammad Hisyam Muhammad Nurdin Muhammad, Saiful Musbihin Musbihin Nabila, Maitsa Fikri Nur Azman Okviyanto, Toni Prayoga Setyawan, Harry Ramadhan, Risky Ridwan Tanjung Rita Desiasni Rita Desiasni Riza Monica Setiawan, Apri setiawan, Dibyo Setyaningtyas, Ayunda Kinasih Shinta Esabella Solahudin, Muhammad Miftah Subeno, Agus Sumarna, Herlin Supianto Cibro Syamsul Bahtiar Syamsul Bahtiar Syamsul Hidayat Syamsul Hidayat Syamsul Hidayat SYAMSUL HIDAYAT Wafdan Muzakki Wiradana, Aditya Yanti, Sahri Yanuar, Emsal Yuliana Fitri Sersaningsih Zahra, Karen