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All Journal Jurnal Teknik ITS Jurnal Sains Materi Indonesia IPTEK Journal of Proceedings Series IPTEK The Journal for Technology and Science Journal of Innovation and Applied Technology The Journal of Pure and Applied Chemistry Research International Journal of Industrial Research and Applied Engineering OISAA Journal of Indonesia Emas Sewagati

Agung Purniawan

Institut Teknologi Sepuluh Nopember

Author-ID : 2542548

Arts Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Public Health Social Sciences Other

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Deposition of Titanium Aluminium Nitride Thin Layer on High Speed Steel Substrate by Radio Frequency Sputtering Sigit Tri Wicaksono; I G.N.B. Dwistha Prayukti; Agung Purniawan; Tri Mardji Atmono
IPTEK Journal of Proceedings Series No 1 (2017): The 2nd International Conference on Civil Engineering Research (ICCER) 2016
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2017i1.2201

High Speed Steel (HSS) has been widely used in manufacturing industry as one of cutting tool materials because of its good mechanical properties yet with a low price. However, since this material has a low thermal resistance property, it will limit its application when used in dry cutting process. Several methods have been used to improve the cutting performance of HSS in dry cutting. One of them was by growing a thin layer of hard coating on the contact surface of the cutting tool material. In this research, Titanium Aluminium Nitride layer were deposited on AISI M41 High Speed Steel substrate by using Radio Frequency (RF) Sputtering method. The aims of this study were to analyze the effect of variations of Aluminium surface area ratios (10, 20, 30, and 40 %) on the Titanium target and also to analyze the effect of deposition time (15, 30, and 45 minutes) on the composition, phase characterization and morphology of the thin layer that formed. The formation of TiAlN and AlN crystalline compounds were observed by X-Ray Diffraction method. A dense layer with a thickness range from 1.4 to 5.2 µm was observed by using a Scanning Electron Microscopy. It was known that the deposition time affect the thickness and also the roughness of the layer. The topography images by Atomic Force Microscopy showed that the deposition time of 45 minutes produce the finest layer with the surface roughness of 10.8 nm.

The Effect of Gamma Irradiation on HDPE/HA Composite as Candidate Material Dental Implant Pormauli Gultom; Sigit T. Wicaksono; Agung Purniawan; Sudirman Sudirman; Sulistiyoso Giat Sukaryo
IPTEK The Journal for Technology and Science Vol 31, No 1 (2020)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Hydroxyapatite (HA) Ca10.P O4/6.OH/2 is the main component of calcium phosphate-based bone, which is most widely used in biomaterial applications because it has non-toxic and biocompatible properties. But if used alone, HA does not have excellent mechanical strength and is not resistant to pressure. High-Density Polyethylene (HDPE) is a high density of synthetic polymers, and hydroxyapatite (HA) is a vital bone component. Composites of them will make synthetic bones, with HDPE as matrix and HA as fillers. HDPE/HA composites with a composition variation of 0%, 5%, 10% HA were compacted and heated at 180°C for 90 minutes, and then irradiated at a dose of 60 kGy. The effect of adding HA composition and gamma irradiation was observed by hardness testing and characterized using XRD and FTIR. The results showed that the addition of HA increased the hardness of HDPE. From the XRD and FTIR analysis, there was no change in the composite phase after irradiation.

Effect of Screw Diameter in Femoral Fracture Fixation Modeled by Finite Element Method Muhammad Nashrullah; Belladina Clara Shinta; Mas Irfan P. Hidayat; Agung Purniawan; Yuli Setiyorini
IPTEK The Journal for Technology and Science Vol 28, No 1 (2017)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Research in the field of biomechanics related to orthopedic implants is rapidly growing in the world, especially for fixation of fractured bone. Fixation is a surgery to locate and attach a plate pressed by screws at the fractured bone. Most of the fracture bones sited in femur. This research focuses on modeling and simulation of plate and screw made of SS316L material for the fixation of the fractured femur using finite element method (FEM). SS316L is a material with good biocompatibility, cheap, and ductile enough. Modeling and simulation done using ANSYS 15.0 software. Simulation results are stress, strain, and total deformation. It is obtained that optimum diameter of screw is 4.5 mm with respect to minimum value of von Mises stress and deformation.

Analysis on the Effectiveness of Extract Mixture of Anthouse Plant (Myrmecodia Pendans) and Red Pepper Vine (Piper Ornatum) as a Green Corrosion Inhibitor on the Corrosion Rate of API 5L Grade B Steel in H2SO4 1M Solution Tubagus Noor Rohmannudin; Agung Purniawan; Sulistijono -; Bintang Ayu Nuraeni
International Journal of Industrial Research and Applied Engineering Vol 3, No 1 (2018)
Publisher : Institute of Research and Community Outreach - Petra Christian University

The analysis of the mixture of anthouse plant (Myrmecodia pendans) and red pepper vine (Piper ornatum) in H2SO4 1M solution had been studied by weight loss, Electrochemical Impedance Spectroscopy (EIS), Fourier-Transform Infrared Spectroscopy (FTIR), and Spectrometer test. The Myrmecodia pendans and Piper ornatum were chosen because they contain antioxidants that can inhibit the corrosion rate. The specimen used in this study was API 5L Grade B steel in H2SO4 1M solution. The compositions used in this study were 100% MP : 0% PO, 75% MP : 25% PO, 50% MP : 50% PO, 25% MP : 75% PO, and 0% MP : 100% PO (MP: Myrmecodia pendans, PO: Piper ornatum). FTIR testing result shows that a passive layer was formed by O, H, and N bonds. The weight loss method shows that the highest efficiency of 52.43% was achieved by 50% MP : 50% PO mix composition. Polarization testing shows that the corrosion rate decreased drastically with the addition of 50% MP : 50% PO mix composition, i.e., from 36.32 mpy to 7.93 mpy, due to the passive layer formed on the steel surface. EIS results show the presence of resistance solution (Rs), charge transfer resistance (Rct), and CPE. The adsorption free energy value of the mixture of Myrmecodia pendans and Piper ornatum was −10.02 kJ/mol and it was a physical adsorption.

Pengurangan Penyebaran Virus dan Bakteri dengan Aplikasi Pelapisan Antivirus (CoFilm+) sebagai Desinfektan Permanent di Medical Center – ITS Agung Purniawan; Royyan Wafi Pujiyanto; Amaliya Rasyida; Sutarsis; Dian Mughni Fellicia; Rochman Rochiem; Moh Faried; Yan Alamanda Ilfahmi
Sewagati Vol 7 No 4 (2023)
Publisher : Pusat Publikasi ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j26139960.v7i4.678

Pandemi Covid-19 memberikan pelajaran berarti bagi kita dimana penyebaran virus SARS-CoV-2 sangatlah cepat dan dapat terjadi melalui kontak langsung, kontak tidak langsung, maupun kontak erat dengan orang yang terinfeksi. Tingkat penyebaran virus yang tinggi membuat rumah sakit mengalami kesulitan dalam penanganan pasien rapat inap, sehingga menyebabkan kurang optimalnya penanganan pasien yang berakibat meningkatkan risiko kematian. Berdasarkan pengalaman tersebut maka sangat diperlukan teknologi untuk meminimalisir proses penyebaran/ transmisi virus atau bakteri terutama di Rumah Sakit dan fasilitas kesehatan lainnya. Transmisi virus ini dapat melalui udara yang terhirup saat proses pernafasan atau melalui permukaan yang terdapat virus aktifnya. Untuk permukaan selama inidilakukan sterilisasi dengan menggunakan larutan kimia. Pada program pengabdian kepada masyarakat ini teknologi yang digunakan adalah pelapisan antimikroba (antimicrobial coating) berbahan dasar nanotembaga yang mampu merusak membran sel serta protein esensial dan DNA bakteri melalui bentuk logam dan ioniknya. Melalui program pengabdian masyarakat ini, diharapkan terjadi pengurangan penyebaran virus dan bakteri khususnya melalu permukaan yang disentuh. Kegiatan ini dilakukan di Medical Center ITS dengan cara membuat lapisan nanotembaga sebagai pelapis antimikroba dan melakukan pelapisan di permukaan fasilitas kesehatan yang sering disentuh.

Pemberdayaan Masyarakat Melalui Peningkatan Pengetahuan Dasar Metalurgi Terapan dan Ketrampilan Pengelasan Bagi Generasi Muda Desa Sebalor, Kec. Bandung, Kab. Tulungagung Agung Purniawan; Wikan Jatimurti; Sutarsis; Alfreda Krisna Altama
Sewagati Vol 7 No 4 (2023)
Publisher : Pusat Publikasi ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j26139960.v7i4.682

Pengabdian Kepada Masyarakat adalah salah satu dari Tri Dharma Perguruan Tinggi yang dilaksanakan dalam rangka untuk meningkatkan partisipasi atau pemberdayaan masyarakat di sektor ekonomi dan industri terutama generasi mudanya. Salah satu sektor industri yang cukup menjanjikan dan sangat mungkin dilaksanakan adalah unit usaha pengelasan. Hal ini dikarenakan keterampilan bidang las mampu menghasilkan produk yang sesuai standar sehingga kualitasnya dapat dipertanggungjawabkan. Namun kelemahan unit usaha di daerah adalah belum adanya kemampuan terkait teori, ketrampilan dan inspeksi atau evaluasi terhadap hasil las yang sesuai dengan standar. Kondisi ini mengakibatkan unit usaha tersebut tidak memiliki standar produk yang memadai. Berdasarkan kondisi ini maka tujuan umum program pengabdian masyarakat ini adalah menghasilkan unit usaha las yang berkompeten dan memiliki standar produk, melalui pemberdayaan kelompok karang taruna Desa Sebalor, Kec. Bandung, Kabupaten Tulungagung dengan pelatihan keterampilan las. Sekitar sepuluh orang anggota Karang Taruna mengikuti pelatihan tersebut dari pemaparan dasar teori sampai praktik pengelasannya. Dalam pelatihan tersebut beberapa peserta sudah memiliki dasar mengelas dan mendapatkan pengetahuan dasar tentang teori pengelasan yang standar, pemilihan material, dan cara sederhana untuk mengevaluasi hasil lasan.

Co-Authors Abdul Hafid B Adzon Nugraha Rizky Pratama Alfreda Krisna Altama Amaliya Rasyida Belladina Clara Shinta Berlian Aulia Rachman Bintang Ayu Nuraeni Carolus Trijatmiko Nugroho Dian Mughni Fellicia Fakhreza Abdul Hengki Irawan Herman Pratikno, Herman I G.N.B. Dwistha Prayukti I.G.N.B Dwistha Prayukti Ibrahim Fathahillah Hizbul Islam Jatimurti, Wikan Lukman Noerochim Mas Irfan P. Hidayat Moh Faried Moh. Farid Muhamad Akbar Wicaksono Muhammad Fikri Kurniawan Muhammad Nashrullah Muhammad Reza Arifianto Pormauli Gultom Risa Wahyu Widyastuti Rochman Rochiem Rohmannudin, Tubagus Noor Royyan Wafi Pujiyanto Sari kusuma W. Sigit T. Wicaksono Sudirman Sudirman Sulistijono Sulistijono Sulistiyoso Giat Sukaryo Sutarsis Sutarsis Tri Mardji Atmono Tri Mardji Atmono Tubagus Noor R. Wicaksono, Sigit Tri Yan Alamanda Ilfahmi Yuli Setiyorini Zaid Sulaiman

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