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All Journal Jurnal Teknik Mesin SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Jurnal Mechanical Jurnal IPTEK Prosiding Seminar Nasional Sains dan Teknologi Terapan Jurnal Elemen Specta Journal of Technology Journal of Applied Sciences, Management and Engineering Technology (JASMET) Jurnal Teknik Mesin Prosiding Seminar Nasional Teknologi Industri Berkelanjutan Journal of Science and Social Development
Vuri Ayu Setyowati
Institut Teknologi Adhi Tama Surabaya
Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering 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 Materials Science & Nanotechnology Mechanical Engineering

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Pengaruh Jumlah Layer Dan Orientasi Sudut Filler Karbon Pada Polymer Matrix Composite Terhadap Kekuatan Tarik Dan Impact R. Achmad Supriyadi; Vuri Ayu Setyowati; Afira Ainur Rosidah
Prosiding SENASTITAN: Seminar Nasional Teknologi Industri Berkelanjutan Prosiding SENASTITAN Vol. 01 2021
Publisher : Institut Teknologi Adhi Tama Surabaya

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Abstract

Komposit merupakan material yang terdiri dari dua atau lebih material sehingga menghasillkan komposit dengan sifat serta karakteristik mekanik yang berbeda. Penelitian ini bertujuan mengetahui pengaruh jumlah layer dan orientasi sudut serat karbon pada komposit terhadap kekuatan impact dan kekuatan tarik pada komposit. Penelitian ini menggunakan serat karbon sebagai filler. Pada matrik menggunakan polyester. Penyusunan komposit menggunakan metode penyusunan komposit laminat. Hasil dari pengaruh jumlah layer terhadap kekuatan impact dan kekuatan tarik terbesar terjadi pada peningkatan jumlah layer pada komposit, karena semakin bertambahnya jumlah layer atau bertambahnya volume fraksi pada material tersebut kekuatan impact dan tarik semakin meningkat. Standart pengujian tarik yang digunakan adalah ASTM D-3039. Berdasarkan hasil pengujian tarik, kekuatan komposit terbesar pada variasi 2 layer 60? sebesar 141,7 Mpa, sedangkan kekuatan tarik terendah pada variasi 3 layer 60? sebesar 72,40 Mpa. Identifikasi bagian fraktur menunjukkan bahwa mekanisme kegagalan sering terjadi ialah pemisahan serat oleh matriks (fiber pull out) serta pemisahan lapisan antara serat matriks yang putus (delamination). Pengujian impact menggunakan standar ASTM D-6110.  Hasil tertinggi pada variasi 3 layer sudut 90? sebesar 10,7 x10-2 J/mm 2 sedangkan kekuatan Impact terendah pada variasi 3 layer 45? sebesar 3,6 x10-2 J/mm2 .
Pengaruh Laju Aliran Air pada Pengujian Jomini terhadap Sifat Mampu Keras dan Struktur Mikro Baja AISI 1045 Iftika Philo Wardani; Hery Irawan; Vuri Ayu Setyowati; Saiful Fuadi Firdaus
Prosiding SENASTITAN: Seminar Nasional Teknologi Industri Berkelanjutan Prosiding SENASTITAN Vol. 01 2021
Publisher : Institut Teknologi Adhi Tama Surabaya

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Abstract

AISI 1045 merupakan material yang umum digunakan sebagai bahan baku untuk pembuatan roda gigi, dimana pada proses manufakturingnya ini perlu diperhatikan pula sifat mampu kerasnya. Sifat mampu keras pada manufacturing roda gigi ini dapat didekati dengan pengujian jomini. Pengujian jomini dilakukan sesuai dengan standart ASTM A255 dengan menggunakan air sebagai media pendinginnya dan variasi laju aliran prndingin sebesar 0.22 L/detik, 0.27 L/detik, dan 0.32 L/detik. Dari penelitian ini diketahui bahwa dengan proses pengujian jomini ini didapatkan struktur mikro yang berupa martensit dan ferit, hal ini diindikasikan dari daerah gelap yang meruncing pada foto struktur mikronya. Dari foto struktur mikronya dapat diketahui pula bahwa semakin besar laju aliran pendingin maka semakin banyak pula martensit yang terbentuk. Selain itu dari nilai kekerasan dan grafik yang dihasilkan dengan pengujian kekerasan Rockwell type C didapatkan kesimpulan pula bahwa laju aliran pendingin paling baik adalah laju aliran 0.27 L/detik, hal ini diindikasikan dari nilai kekerasannya yang paling tinggi pada titik uji ke 15 serta slope grafiknya pada laju aliran ini paling landai dibandingkan laju aliran yang lain.
Pengaruh Variasi Molaritas dan Jenis Inhibitor terhadap Ketahanan Korosi dan Morfologi Baja Tulangan Beton Afira Ainur Rosidah; Vuri Ayu Setyowati; Nasrul Amin
Prosiding SENASTITAN: Seminar Nasional Teknologi Industri Berkelanjutan Prosiding SENASTITAN Vol. 02 2022
Publisher : Institut Teknologi Adhi Tama Surabaya

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Abstract

Concrete reinforcement steel is often needed as a reinforcement for a building. It is like other materials; steel concrete will experience a weakening of quality due to the corrosion process. These steels are commonly coated using inhibitors to slow down the corrosion rate. In this research, three types of inhibitors, namely sodium nitrite, phosphoric acid, and carboxylic acid will be mixed into the corrosive medium of HCl and aquades. Dissolution of each inhibitor against corrosive media uses three different molarities, that are 0.2 M, 0.5 M, and 0.8 M. Each inhibitor solution and the corrosive medium will be used as an immersion medium to carry out the corrosion process of reinforced concrete steel. For the evaluation process, each of these specimens will be calculated the value of the corrosion rate and the efficiency of the inhibitor; as well as morphological analysis will also be carried out to determine how the impact of corrosion on the reinforced concrete steel. The results of this study stated that a carboxylic acid inhibitor with a concentration of 0.8 M; its combination led at the best performance with the inhibitor efficiency of 30.20%, while a phosphoric acid inhibitor with a concentration of 0.2 M had the worst performance with an inhibitor efficiency of 24.83%. In addition, from the morphological analysis, it was also found that giving a higher concentration of an inhibitor can reduce the corrosion rate.Keywords: reinforcing steel, inhibitor, molarity, corrosion rate
Fabrication and simulation studies on sound absorption coefficient of natural microfibers reinforced silicone rubber Afira Ainur Rosidah; Vuri Ayu Setyowati
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol 16, No 2 (2022): SINTEK JURNAL
Publisher : University of Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.16.2.104-111

Abstract

Silicone rubber (SR) is known as stable and able to get through an extreme environment. Moreover, the combination of SR and natural fiber as the composite for the sound absorption application is still limited. For this reason, this study was aimed to fabricate the natural fiber-reinforced porous SR for the sound absorption material. Then, the composites were simulated using multilinear regression method to predict the sound absorption coefficient and its factor influence. The composite fabrication was started with the alkalization of oil palm fiber treatment. Furthermore, the porous SR were prepared using NaCl filler to form the pores. Then, the specimen containing NaCl was soaked in warm water and all specimens were dried at 110 °C to remove the remaining water. The addition of fibers enhances the density value to the highest value of 1.061 g/cm3 with 6 wt% microfibers. The higher the microfiber addition led to the higher α value in low frequency, it occurred at SR/6 wt% microfibers with the α value of 0.356. Additionally, the most suitable equation with the smallest error is Equation 6 which has the RMSE and values of 0.05234 and 0.6138, respectively.
Effect of Current and Coating Time on the Layer Thickness and Corrosion Rate of Electroplated AISI 1045 Afira Ainur Rosidah; Vuri Ayu Setyowati; Miftahul Choir
SPECTA Journal of Technology Vol. 5 No. 1 (2021): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (796.012 KB) | DOI: 10.35718/specta.v5i1.337

Abstract

Corrosion mostly occurs on carbon steel which is applied for automotive components and household needs. This natural phenomenon is impossible to be avoided. However, it can be set by escalating its corrosion initiation time. Electroplating is a method that can be used to give protection to slower the corrosion initiation time by forming a layer on the specimen surface, additionally, this method is simple and low cost. One of the most commonly used metals for electroplating is nickel, nickel electroplating is suitable for automotive component coating. For these reasons, this study is focused on analyzing the effect of current and coating time on the layer thickness and corrosion rate of AISI 1045 carbon steel with nickel electroplating. The current variations used were 0.5; 1.0; and 1.5 A and the coating time variations were 5, 10, and 15 minutes. AISI 1045 was used as the cathode, nickel was as the anode, and nickel chloride was the electrolyte solution. The specimen with a current of 1.5 A and a coating time of 15 minutes shows the thickest coating and the lowest corrosion rate, with values of 0.0205 mm and 0.94 mpy, respectively. This study indicates that the increase of the current and coating time enhances the layer thickness and declines the corrosion rate.
PENGABDIAN MASYARAKAT PENYULUHAN PERAKITAN LAMPU PENERANGAN BERTENAGA SURYA KEPADA MASYARAKAT NAMBANGAN Syamsuri; Miftahul Ulum; Bambang Setyono; Gatot Setyono; Suheni; Dwi Khusna; Ali Khomsah; Ardi Noerpamoengkas; Desmas Arifianto Patriawan; Vuri Ayu Setyowati; Hery Irawan; Hasan Syafik Maulana; Zain Lillahulhaq; Iftika Philo Wardani; Frizka Vietanti; Ahmad Anas Arifin; Afira Ainur Rosidah
Journal of Science and Social Development Vol. 3 No. 1 (2020): Journal of Science and Social Development
Publisher : Universitas Nahdlatul Ulama Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jossd.v3i1.285

Abstract

Kampung Nambangan Perak is located in Kelurahan Kedung Cowek, Bulak District, Surabaya, East Java. The majority of Nambangan residents work as fishermen. The Nambangan community is still unfamiliar with the use of alternative energy such as solar cells to replace fuel oil. The road access of village environment was only illuminated independently by installed map of people’s residents. The dim road conditions can cause a sense of alertness to residents and road users who spent the night. In addition, the installation of lamps with greater power can burden the economy of residents due to rising electricity prices. Based on field observations and direct interviews with local residents, there were three focuses aspects of this community service program, namely the introduction of alternative energy to residents, installation and guidance of lamp maintenance equipped with solar panels. Along with the implementation of guidance and education program for the Nambangan community, it is hoped that the residents will understand and feel familiar with the availability of alternative energy. The residents are also expected to be able to apply the use of alternative energy in their daily life. In addition, residents are expected to be able to carry out the process of assembling and maintaining alternative energy sources, especially solar panels.
Co-Authors Afira Ainur Rosidah Ahmad Anas Arifin Ali Khomsah Amang Kuswanto Ardi Noerpamoengkas Bambang Setyono, Bambang Desmas Arifianto Patriawan Dwi Khusna Eriek Wahyu Restu Widodo Frizka Vietanti Gatot Setyono Hery Irawan, Hery Iftika Philo Wardani Ilham Prajala Samudra Ilham Qiromi M. Wiji Santoso Maulana, Hasan Syafik Miftahul Choir Miftahul Ulum Mohammad Yusuf Sulaiman Muhamad Febrianto Nasrul Amin R. Achmad Supriyadi Saiful Fuadi Firdaus Suheni Suheni Suheni Syamsuri Zain Lillahulhaq