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All Journal JUITECH: Jurnal Ilmiah Fakultas Teknik Universitas Quality
Juan Randy Simamora
Universitas Quality Berastagi
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Engineering Industrial & Manufacturing Engineering Transportation

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KARAKTERISASI KEAUSAN KOMPOSIT CANGKANG KEMIRI DAN TEMPURUNG KELAPA SEBAGAI BAHAN PEMBUATAN KAMPAS REM (BRAKE PAD) Juan Randy Simamora; Chandra Kurniawan
JUITECH: Jurnal Ilmiah Fakultas Teknik Universitas Quality Vol 3, No 2 (2019): Vol 3 No 2
Publisher : Universitas Quality

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36764/ju.v3i2.253

Abstract

The research has been conducted on the use of candlenut shells and coconut shells as composite materials in the manufacture of brake pads. The design of friction composite formulations is carried out based on four classes of friction material namely fillers, binders, reinforcing fibers and property modifiers with a fixed percentage based on weight. Comparison of the composition of Candlenut shell powder and coconut shell for each sample S-01 (35: 25) wt .-%, S-02 (30: 20) wt .-%, and S-03 (25: 15) wt. -%. From the results of data analysis, the values of water absorption for each sample were S-01 (0.00706%), S-02 (0.000496%), S-03 (0.00584%). The lowest wear test was found in the S-03 sample of 3.67 x 10-5 g / mm2.s. The SEM-EDS test results show the distribution of particles in different friction materials for each sample and show that carbon is present in approximately equal amounts in all formulations. The predominance of the presence of metals in brake linings includes: iron (Fe), magnesium (Mg), carbon (C), and aluminum (Al), silicon (Si), potassium (K)
KARAKTERISASI KARBON AKTIF CANGKANG KEMIRI DAN TEMPURUNG KELAPA SEBAGAI BAHAN FILTER AIR Juan Randy Simamora; Chandra Kurniawan; Pintor Simamora; Gusnita B. Sinaga
JUITECH: Jurnal Ilmiah Fakultas Teknik Universitas Quality Vol 4, No 2 (2020): VOL 4 NO 2
Publisher : Universitas Quality

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36764/ju.v4i2.482

Abstract

Telah dilakukan penelitian tentang pemanfaatan cangkang kemiri  dan tempurung kelapa sebagai material karbon aktif dalam pembuatan filter air. Karbon aktif merupakan arang yang sudah diaktivasi dengan zat aktivator sehingga porinya terbuka dan memiliki kemampuan daya serap yang baik terhadap anion, kation, dan molekul dalam bentuk senyawa organik dan anorganik, baik berupa larutan maupun gas. Pembuatan arang aktif dilakukan melalui proses aktivasi arang dengan cara fisika atau kimia. Perbandingan komposisi Serbuk tempurung kelapa dan cangkang kemiri untuk masing-masing sampel S-01 (50 : 30) wt.-%, S-02 (60 : 20) wt.-%, dan S-03 (70 : 10) wt.-%. Dari hasil analisa data diperoleh nilai parameter fisika dari pengujian air hasil filter karbon aktif parameter , yaitu : kekeruhan 1,00 NTU, warna < 0,2 TCU, Kesadahan 50,96, tidak berasa dan tidak berbau (Sesuai Standar Air Bersih Permenkes No.32 Tahun 2017). Pengujian SEM menunjukkan bahwa distribusi ukuran pori yang merupakan parameter yang penting dalam hal kemampuan daya serap arang aktif terhadap molekul sudah terbentuk dan memiliki ukuran bervariasi.
KARAKTERISASI DAN PREPARASI SENSOR BERBASIS KITOSAN SEBAGAI DETEKTOR PENYAKIT DIABETES Juan Randy Simamora; Iskandar Iskandar; Aroli Harefa; Gusnita Betaria Sinaga
JUITECH: Jurnal Ilmiah Fakultas Teknik Universitas Quality Vol 5, No 1 (2021): VOL 5 NO 1
Publisher : Universitas Quality

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36764/ju.v5i1.535

Abstract

Characterization and preparation of chitosan-CMC films have been carried out in detecting diabetes. The characteristics of the chitosan-CMC film are able to detect blowing acetone levels out of the human breath, indicated by the unstable electrical properties of the output voltage between patients and non-sufferers. Acetone itself is a substance produced when metabolic processes take place in the body. Voltage increases due to the influence of imperfect metabolic processes, so diabetics produce excessive levels of acetone. The sensor film was modified chitosan-CMC, with varied mass composition of 0.5 g: 0.1 g, 0.5 g: 0.5 g. Chitosan-CMC film was fabricated using the electrodeposition method. The chitosan-CMC film characteristics of 0.1 gr and 0.5 gr from the fabrication and measurement process of PSA obtained 3,716.34 nm and 5,129.97 nm. The FT-IR test results of 0.1 g and 0.5 g of chitosan-CMC showed a change in the relationship between different functional groups. The UV-Vis test obtained a different maximum absorbance for each chitosan-based sensor with a composition of Cs-CMC 0.5 w / v, Cs-CMC 0.1 w / v, respectively 0.114167 (427 nm), 0.098258 ( 417nm). It shows that the chitosan-CMC based sensor with the addition of 0.5 g of CMC has a very high sensitivity concentration. Chitosan-CMC sensor film with 0.5 CMC has good characteristics, on a very even film surface, has high thermal properties and an energy gap of 3.87 eV.
Co-Authors Aroli Harefa Chandra Kurniawan Gusnita B. Sinaga Gusnita Betaria Sinaga Iskandar Iskandar Pintor Simamora