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All Journal Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Jurnal Teknologi Jurnal Pengendalian Pencemaran Lingkungan (JPPL) Jurnal Warta Desa (JWD) Hexagon

Sopyan Ali Rohman

Universitas Teknologi Sumbawa

Author-ID : 3609188

Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Other

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ANALISIS KOLEKTOR PELAT BERGELOMBANG TERHADAP PANAS YANG BERGUNA DAN LAJU PENGERINGAN PADA SOLAR DRYER RUMPUT LAUT DI SUMBAWA Abdul Malik Karim; Mietra Anggara; Sopyan Ali Rohman; Fadhli Dzil Ikram
Hexagon Jurnal Teknik dan Sains Vol 1 No 2 (2020): HEXAGON - Edisi 2
Publisher : Fakultas Teknologi Lingkungan dan Mineral - Universitas Teknologi Sumbawa

Seaweed is one of the superior commodities of aquaculture in Kertasari Village, Taliwang District, Sumbawa Barat, Nusa Tenggara Barat, with an area of ??1,550 ha in 2013 with a production of 9,850 tons. Post-harvest handling and processing of seaweed is still conducted traditionally, efficiency and the quality of seaweed produced is low. Long enough drying can affect the growth of microorganisms in seaweed, causing the growth of mold and fungus. The explanation of the problem above makes the writer try to find a solution of the problems faced by seaweed farmers in Kertasari Village, with a maker of seaweed dryers based on Solar Dryer. The solar dryer uses a corrugated plate solar collector with a slope angle of 45o and a zinc plate material with a thickness of 0.4 mm with a conductivity value (k) of 116 W / moC. In addition it uses a clear glass cover with a thickness of 3 mm with a slope of 15o. This tool uses a framework in the form of aluminum, with the tilt angle used can produce a Tout of 70.64 oC and Tin of 56.11 oC.

ANALISIS PENGARUH JENIS PLASTIK TERHADAP DENSITAS DAN KUAT TEKAN PADA BATAKO RINGAN BERBAHAN LIMBAH PLASTIK DAN BATU APUNG Sopyan Ali Rohman; Muhammad Ibadurrahman; Dedy Dharmawansyah
Hexagon Jurnal Teknik dan Sains Vol 1 No 2 (2020): HEXAGON - Edisi 2
Publisher : Fakultas Teknologi Lingkungan dan Mineral - Universitas Teknologi Sumbawa

The amount of plastic used in this era has many impacts, one of which is plastic waste, but this shows that plastic has many benefits and advantages so that it is used in almost all things in everyday life. Reuse (recycling) of plastic will be very helpful in dealing with plastic waste problems. One alternative to plastic recycling is the use of plastic waste as a material for making lightweight bricks. Problems that are often encountered in the use of conventional brick in this era are the density (density) and compressive strength, where the expected results are with a low density (density), can produce high compressive strength. Presentation of the above problems makes the writer interested in researching the use of plastic waste to be used as raw material for making lightweight bricks. In this study used 4 variations of plastic types, namely PP, LDPE, and HDPE, making plastic specimens mixed with pumice waste because it has porous and lightweight characteristics, with a ratio of 50:50 from volume. With each variation consists of 2 (two) beam-shaped samples to be tested for density (?) and compressive strength (P). A total of 6 samples. The results showed that LDPE plastic material mixed with pumice has the best density and compressive strength compared to other types of mixtures with the value of ? = 0.76g / cm2, and P = 123.15kg / cm2 or 12.08MPa.

PENGARUH PERSENTASE KOMPOSIT BATU APUNG DAN PLASTIK PET TERHADAP DAYA SERAP BUNYI Izzuddin Abu Bakar; Sopyan Ali Rohman; Dedy Dharmawansyah; Fadhli Dzil Ikram
Hexagon Jurnal Teknik dan Sains Vol 1 No 2 (2020): HEXAGON - Edisi 2
Publisher : Fakultas Teknologi Lingkungan dan Mineral - Universitas Teknologi Sumbawa

This sound absorption test was conducted by finding the value of Sound Transmission Class (STC) using the impedance tube testing method that refers to the ASTM E413 standard. This study aims to determine the effect of the percentage of composite pumice - PET plastic on sound absorption. As for the variation of the volume fraction of pumice: PET plastic that is (40:60, 50:50, 60:40)% based on the volume ratio. In this study it can be seen that the highest value in the sound absorption test is found in composites with a volume fraction of 40:60 with an STC value of 25, while the lowest value is found in composites with a volume fraction of 60:40 with an STC value of 11. Based on the results of this study, composite with a volume fraction of 40:60 is the best percentage in the sound absorption test because the greater the STC of a material, the better it is at absorbing sound.

ANALISIS KEKUATAN UJI BENDING PENGELASAN SHIELDED METAL ARC WELDING (SMAW) MATERIAL SS400 MENGGUNAKAN KAWAT LAS E6013 BERBAGAI VARIASI ARUS LISTRIK Oktavian Dwi Nata; Muhamad Hidayat; Sopyan Ali Rohman
Hexagon Jurnal Teknik dan Sains Vol 2 No 1 (2021): HEXAGON - Edisi 3
Publisher : Fakultas Teknologi Lingkungan dan Mineral - Universitas Teknologi Sumbawa

Pengelasan adalah proses menyambungkan dua logam atau lebih dengan cara melelehkan logam induk menggunakan energi panas. Penelitan ini bertujuan untuk mengetahui nilai kekuatan uji bending pada pengelasan SMAW menggunakan kawat las E6013 dengan berbagai variasi arus listrik, yaitu 80A, 90A dan 100A. Metode pengelasan yang digunakan adalah las SMAW dengan material SS400. Jenis kampuh yang digunakan adalah kampuh V dengan kemiringan 60° standarisasi AWS d1.1:2000. Pengujian yang dilakukan adalah pengujian bending dengan metode Three Point Bending. Spesimen uji bending berdasarkan standarisasi ASTM E23-02. Nilai kekuatan uji bending paling rendah adalah pada kuat arus 80A dengan nilai rata-rata tegangan bending sebesar 1,256 N/mm². Nilai rata-rata kekuatan uji bending untuk kuat arus 90A rata - rata tegangan bending sebesar 1,305 N/mm².Untuk kuat arus 100A adalah yang terbesar yaitu sebesar 1,387 N/mm².

Co-Authors Abdul Fajar Abdul Fajar Abdul Malik Karim Abdul Salam Abdurrahman Amrullah, Shafwan Cyrilla Oktaviananda Dharmawansyah, Dedy Fadhli Dzil Ikram Faris Zaiem Alhakiem Izzuddin Abu Bakar Mietra Anggara Muhamad Hidayat Muhammad Ibadurrahman Nawassyarif Nurkholis Nurkholis Nurkholis Nurkholis Oktavian Dwi Nata Rizaldi, Lalu Heri

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