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All Journal Jurnal Teknologi Quantum Teknika
Ferriawan Yudhanto, Ferriawan
Politeknik Muhammadiyah Yogyakarta (Politeknik UMY)
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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CHARACTERIZATION OF PERFORMANCE ACOUSTIC SANDWICH COMPOSITE WITH A CORE OF POLYURETHANE FOAM-AGAVE SISALANA FIBER REINFORCED POLYESTER FOR NOISE ABSORPTION Yudhanto, Ferriawan; Wisnujati, Andika; Yahya, Iwan
Jurnal Teknologi Vol 8 No 2 (2015): Jurnal Teknologi
Publisher : Jurnal Teknologi, Fakultas Teknologi Industri, Institut Sains & Teknologi AKPRIND Yogyakarta

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Abstract

Bahan penyerap memiliki karakteristik akustik yang memantulkan dan menyerap gelombang bunyi. Penyerapan oleh bahan berpori sangat berguna untuk mengurangi tingkat kekuatan bunyi yang terjadi sehingga dapat mengurangi kebisingan di dalam ruangan. Koefisien Penyerapan Bunyi (NAC) dari Acoustic Sandwich Composite (ASC) diuji dengan menggunakan tabung Kundts Tube impedansi dua mikrofon sesuai dengan standar ASTM 1050-98. Dimensi ASC terdiri dari 1 inti dan 2 kulit dengan diameter 100 mm. Kulit di sisi bagian depan didisain memiliki 5 lubang (d = 10 mm) dengan variasi 4 ketebalan yang berbeda dari busa poliuretan (busa-PU) yaitu 10, 20, 30 dan 40 mm yang digunakan sebagai inti dari ASC. Kulit atau skin di kedua sisi komposit sandwich terbuat dari poliester yang diperkuat bahan serat alam agave sisalana acak dan panjang dengan tebal 5 mm. Nilai Koefisien Penyerapan Bunyi (NAC) diberikan nilai 0-1, yang berarti penyerapan bunyi tidak ada akan bernilai 0, dan penyerapan bunyi mencapai maksimum apabila bernilai 1 pada rentang frekuensi 0 Hz -1,6 kHz. Pada penelitian ini terlihat sifat busa polyurethane dengan ketebalan 30 mm baik pada rentang frekuensi rendah dengan nilai NAC tertinggi adalah 0,46. ASC dengan ketebalan busa PU 30 mm memiliki kenaikan harga NAC di frekuensi rendah (400 Hz-1000 Hz), nilai tertinggi 0,80 di frekuensi 800 Hz. ASC dengan ketebalan busa PU 10 mm baik untuk frekuensi menengah (1000 Hz-1600), nilai tertinggi 0,89 pada frekuensi 1200 Hz.
Karakterisasi Bahan Kampas Rem Sepeda Motor Dari Komposit Serbuk Kayu Jati Yudhanto, Ferriawan; Dhewanto, Santo Ajie; Yakti, Suluh Widya
Quantum Teknika : Jurnal Teknik Mesin Terapan Vol 1, No 1 (2019): October
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jqt.010104

Abstract

Commonly the prime material for brake pad of the commercial motorcycle using asbestos, these materials cause a disease like as cancer of respiration if the abrasive particles were sniffed. The SKJ (Serbuk Kayu Jati) brake pad is alternative to replacement the asbestos brake pads. The mechanical test includes a wear test, hardeness test, friction coefficient test, and heat resistant test. The hot press process for SKJ as main material of brake pad based by variation of temperature there are 160ºC, 170ºC, and 180ºC. The optimum test result of SKJ brake pads is a variation of 180ºC with wear test result is 3,36 x 10-7 mm2/kg, the hardeness result is 25,1 BHN, the friction coefficient test is 0,59 and not damaged on the heat resistant test with a temperature of 300ºC during an hour.
Manufaktur dan Analisa Kekuatan Tarik Komposit Hybrid Serat Glass/Carbon untuk Aplikasi Pembuatan Blade Turbin Savonius Shomad, Muhammad Abdus; Yudhanto, Ferriawan; Anugrah, Rinasa Agistya
Quantum Teknika : Jurnal Teknik Mesin Terapan Vol 2, No 1 (2020): October
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jqt.020122

Abstract

Blade design and material selection for savonius turbines need to accurate to produce high power input. This research aims to make the most robust blade material by vacuum infusion manufactured. The hybrid laminate composite applied in the manufacture of Savonius turbine blades consists of woven carbon fiber with chopped strand mat glass fiber and woven glass fiber. The variations of fiber composition comprised of five layers, namely 5An (5 layers of woven glass fiber), 5Ac (5 layers of chopped strand mat glass fiber), 2C-3An (2 woven carbon fiber-3 woven glass), and 2C-3Ac (2 woven carbon fiber-3 chopped strand mat glass fiber). The results showed 2C-3An for the best variation of hybrid laminate composite with the tensile strength of 219 MPa, with the modulus of elasticity of 6.8 GPa and the smallest density was 1.21 g/cm3.
Desain, Manufaktur dan Uji Kinerja Mesin Pengolah Serbuk Jahe Merah Yusuf, Mirza; Yudhanto, Ferriawan; Purbajati, Dimas Pulung
Quantum Teknika : Jurnal Teknik Mesin Terapan Vol 2, No 2 (2021): April
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jqt.v2i2.11573

Abstract

Design of the red ginger powder production machine aims to increase UMKM(Usaha Mikro Kecil dan Menengah) in the Yogyakarta area. By making a semiautomatic red ginger powder machine, it can increase production capacity and improve the economy for UMKM. Component design is divided into 3 processes, namely; designing the frame, designing the stirring shaft, and designing the cooking tank. There are first adjusted to the design that has been made using the solid works software which is then applied by assembling other components. The drive system on the powdered red ginger production machine uses an AC electric motor which is then forwarded into the v-belt transmission then the output from the transmission is forwarded to the stirring shaft.
Co-Authors Anugrah, Rinasa Agistya Dhewanto, Santo Ajie Holyness Nurdin Singadimedja Iwan Yahya Purbajati, Dimas Pulung Shomad, Muhammad Abdus Yakti, Suluh Widya Yusuf, Mirza