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Pengaruh Orientasi Arah Serat Terhadap Kekuatan Mekanis Komposit Serat Pandan Dengan Pelapisan Carbon Cloth Ferdinan Ashada; Sehono Sehono; Dhimas Wicaksono
Journal of Metallurgical Engineering and Processing Technology Vol 3, No 2 (February 2023)
Publisher : UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jmept.v3i2.6929

Abstract

Indonesia has a wealth of natural resources that are very abundant, where one of the natural resources that can be found in Indonesia is plants that contain fiber. At this time plants containing fiber were mostly used for the manufacture of handicrafts. One of the plants in question is the pandan plant, with the passage of time, it is necessary to use fiber from pandan plants so that it can be used for the latest technology. In this study, composites were made using pandan fibers, where for variations of this study, namely 0°, 90° and random. As for the process of making composites using the press method and in coating carbon cloth on composite surfaces using the hand lay up method. In this study, researchers conducted tensile testing based on ASTM D-3039 and for impact testing based on ASTM E-23. The results of this study were for specimens in the best tensile testing was at an angle variation of 90° with an average tensile strength of 29.43 MPa. The highest impact test results are in the 90° variation with an absorbable energy value of 2,622 J and for an impact price value of 0.033 J/mm2.
ANALISIS PENGARUH PELAPISAN NIKEL PADA MATERIAL ALUMINIUM SERI 2024 TERHADAP KEKUATAN TARIK DAN KEKERASAN DENGAN METODE ELEKTROPLATING Fatir Slametriadi Fatir; Sehono; Ferry Setiawan
Teknika STTKD: : Jurnal Teknik, Elektronik, Engine Vol 9 No 1 (2023): TEKNIKA STTKD: JURNAL TEKNIK, ELEKTRONIK, ENGINE
Publisher : Sekolah Tinggi Teknologi Kedirgantaraan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56521/teknika.v9i1.611

Abstract

Aluminum alloy in the aerospace field has been widely used in the manufacture of skins from aircraft. The use of aluminum alloy has the advantages of relatively high mechanical strength and resistance to corrosion. In order to raise the strength of the material and the physical appearance of aluminum can use the electroplating method. Electroplating is a method used to coat metals with other types of metals, the coating process uses the help of electric current. The electric current used will trigger the release of metal ions at the anode to be further attached to the cathode. In this study, an electroplating process was carried out on 2024 aluminum alloy specimens with nickel coating. The variations in this study used differences in electric current voltages of 25 V, 35 V, and 45 V. Then to find out the differences from the variations that have been used, tensile tests and hardness tests were carried out. From the results of the tensile test, it shows that the higher the voltage of the electric current used, it will increase the tensile strength, but the yield strength will decrease. The highest tensile strength is found in the voltage variation of 45 V with a value of 452.53 MPa. Then on the hardness test shows that the higher the voltage of the electric current will reduce the hardness value. The highest hardness value is found at a voltage of 25 V with a value of 963.594.
PENGEMBANGAN MATERIAL KOMPOSIT TAHAN PANAS DENGAN MENGGUNAKAN METODE 3D PRINTING DAN HAND LAY UP kiki selo ageng; Ikbal Riski Putra; Sehono
Teknika STTKD: : Jurnal Teknik, Elektronik, Engine Vol 9 No 1 (2023): TEKNIKA STTKD: JURNAL TEKNIK, ELEKTRONIK, ENGINE
Publisher : Sekolah Tinggi Teknologi Kedirgantaraan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56521/teknika.v9i1.773

Abstract

Sandwich composites are a combination of two materials that have different properties which are then put together to have stronger properties and resistance than their constituents, consisting of the skin and the core. In this study, ceramic fiber blanket insulation was used, leather fiber, core polylactid acid (PLA) and united using merrhyl polyester resin. This research produces a new composite product with a honeycomb core combined with a core made of PLA which is printed with 3D printing, the manufacturing process is by using a hand lay up based on its superiority which is a simpler process, making heat resistant composites by combining ceramic fiber blanket fibers insulation and merrhyl polyester resin, in the thermal conductivity test and also the impact charpy obtained the results from the impact charpy test with a honeycomb core with a ratio of 50% fiber and 50% resin to get an impact on specimen 3 of 4,848j then on impact without skin only PLA got a value of 1.5034j in the thermal conductivity test with a time of 30s to get a Q1 temperature of 1.3130C in Q2 to get a result of 3540C in this study obtained a heat-resistant composite with a mixture of ceramic fiber blankets this insulating material is suitable for the temperature conditions from the results of this test fix what the impact results and also know the ceramic fiber blanket insulation fiber which is suitable for use in composite materials that require high temperatures.
PENGARUH PERENDAMAN NaCl TERHADAP KEKUATAN MEKANIS PADA SAMBUNGAN RIVET ALUMUNIUM SERI 2024-T3 Defri Erianto Lesmana; Dhimas Wicaksono; Sehono Sehono
Suara Teknik : Jurnal Ilmiah Vol 14, No 1 (2023): Suara Teknik: Jurnal Ilmiah
Publisher : Fakultas Teknik UM Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Faktor keamanan dalam dunia penerbangan harus selalu diperhatikan, mengingat pesawat terbang merupakan kendaraan yang memiliki beban kompleks, seperti harus menahan gaya tarik, tekan, fatigue dan beban lain. Salah satu komponen pada pesawat terbang yang memiliki peran penting adalah skin. Skin pesawat menahan beban aerodinamika dari luar dan pressurization dari dalam kabin. Rivet merupakan salah pin yang digunakan untuk menyambung plat skin. Karena lingkungan aktivitas pesawat yang relatif lembab maka perlu adanya analisis pertumbuhan laju korosi, hal ini dikarenakan akibat adanya korosi dapat menyebabkan kerusakan pada sambungan. Pada penelitian ini dilakukan pembuatan sambungan rivet pada plat aluminium 2024, kemudian dilakukan perendaman pada NaCl untuk mengkondisikan korosi. Setelah dilakukan perendaman pada NaCl, selanjutnya dilakukan pengujian geser pada rivet. Dari hasil pengujian laju korosi maka laju korosi tertinggi terdapat pada variasi 24 jam dengan nilai 36.69 mm/year sedangkan terendah pada variasi 72 jam dengan nilai 13.48 mm/year. Sehingga semakin lama perendaman pada NaCl akan menurunkan laju korosi. Dari hasil pengujian geser maka kekuatan geser tertinggi terdapat pada variasi 72 jam dengan nilai 7.15 kgf/mm2, sedangkan yang paling rendah terdapat pada variasi 24 jam dengan nilai 6.31 kgf/mm2. Sehingga semakin lama perendaman pada larutan NaCl akan meningkatkan kekuatan geser dari spesimen. Kata kunci: Aluminium, rivet, korosi, geser
Studi Eksperimental Heat Exchanger Dengan Penambahan Vortex Generator Tipe Line Buffle, Line Buffle With Circular Hole, Line Buffle With Square Hole Dengan Memanfaatkan Gas Buang Untuk Mengatasi Icing Pada Karburator Mesin Piston Reza Sheirico Surbakti; Ferry Setiawan; Sehono Sehono
Suara Teknik : Jurnal Ilmiah Vol 13, No 2 (2022): Suara Teknik: Jurnal Ilmiah
Publisher : Fakultas Teknik UM Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29406/stek.v13i2.4702

Abstract

Ide dasar yang melandasi penelitian ini adalah pemanfaatan gas buang engine pesawat yang digunakan untuk sistem anti icing, sehingga di dapatkan sebuah mekanisme operasional yang efektif untuk mengatasi icing yang terjadi pada sistem karburator pesawat piston engine. Sistem anti icing yang dibuat meliputi shell dan tube yang diberikan vortex generator berupa buffle yang dimodifikasi, adapun variasi dari buffle yang digunakan yaitu line buffle, line buffle with circular hole, dan line buffle with square hole. Penelitian dilakukan secara eksperimental dengan membuat sistem heat exchanger yang diberikan variasi buffle. Penentuan buffle terbaik yang digunakan sebagai vortex generator berdasarkan kalor yang dapat dilepas dan efektivitasnya pada sistem heat exchanger yang sudah dibuat. Berdasarkan hasil penelitian yang dilakukan maka buffle dengan perpindahan kalor terbaik terdapat pada tipe line buffle yang tidak diberikan hole, nilai perpindahan kalor yang terjadi sebesar 12,7 W/m2.oC dan menghasilkan efektivitas sebesar 70,27%. Hal ini disebabkan oleh aliran yang menabrak buffle tanpa hole akan lebih lama bertinteraksi di dalam tube sehingga memaksimalkan perpindahan kalor.Kata kunci: Icing, Karburator, Heat, Vortex, Efektivitas
Analysis Of Tensile Strenghth Coconut Coir Fiber Composit Using The Vaccum Bagging Method Zaqi Arya Zullfawas Ilhami; Ferry Setiawan; Sehono Sehono
Journal of Metallurgical Engineering and Processing Technology Vol 5, No 1 (August 2024)
Publisher : Universitas Pembangunan Nasional "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jmept.v5i1.10524

Abstract

Abstract The utilization of coconut fiber currently is limited to making brooms or for burning, necessitating further applications. One of these applications is its use as a reinforcement in composites, enhancing utility value and environmental friendliness. This study focuses on crafting composites from coconut fiber with variations in fiber orientation: random, 0°, and 45°.Tensile testing results reveal that the random fiber orientation variation exhibits the best performance, with a stress of 27.30 MPa, attributed to higher density. The 45° fiber orientation variation has the lowest stress (24.23 MPa) due to a lower fiber count. In bending tests, the random fiber orientation variation again performs the best, with a bending stress of 120 MPa, attributed to its high density that strengthens the structure. The 0° fiber orientation has the lowest bending stress (88.59 MPa) due to lower fiber density.Overall, utilizing coconut fiber as reinforcement in composites shows promising positive outcomes, with the random fiber orientation variation providing the best mechanical performance. This endeavor holds the potential to enhance the economic and ecological value of coconut fiber.Keywords: Composite, fiber, coconut, tensile, bending
PENGARUH KEKUATAN TARIK DAN KEKUATAN BENDING KOMPOSIT HYBRID DAN NON-HYBRID MENGGUNAKAN METODE VACUUM BAGGING Hazhari, Fadhlah; Sehono, Sehono; Setiawan, Ferry
Injection: Indonesian Journal of Vocational Mechanical Engineering Vol 2 No 2 (2022)
Publisher : Pengelola Jurnal Politeknik Negeri Ketapang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58466/injection.v2i2.1484

Abstract

Developments in the field of materials, especially the use of polymers as basic materials, are growing, this is because it meets human needs in improving welfare by processing a basic material into a material that can be used. Synthetic materials such as polymers are widely used in the manufacture of materials combined with other materials. So that it can create new materials either by adding natural fibers or synthetic fibers. Composites can be arranged using natural fibers, such as jute fibers then combined with woven roving. Jute fiber is an organic waste that is widely obtained as a burlap sack hole in traditional markets. Synthetic fibers or artificial fibers have advantages such as strong, corrosion and heat resistant fibers and are easy to mass produce. Making composites can be done several methods, one of which is using the vacuum bagging method with a technique of using pressure to direct the resin to the fibers. The researcher's goal is to determine the characteristics of tensile tests and bending tests using vaccum bagging. There are also tests carried out in the form of tensile tests that refer to the ASTM D638 standard variations of natural and synthetic fiber specimens (hybrid) In the form of yield values of 62.94 Mpa and tensil 85.9. Non-hybrid fibers can be yielded at 28.7 Mpa and tensile at 32.9 Mpa. While the bending test. In hybrid fibers, bending strength is obtained with a value of 1,126.96 MPa. In non-hybrid fibers, bending strength results were obtained with a value of 643.30 Mpa.
Analysis of Corrosion Rate Al 7075 Using Seawater and Rainwater Media Using the K2CRO4 Paramarta, Brillian Rakha; Sehono, Sehono; Putra, Ikbal Rizki
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol. 18 No. 2 (2024): SINTEK JURNAL
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.18.2.113-120

Abstract

Aluminum is one of the most widely used materials today due to several advantages, including its lightweight nature, relatively high tensile strength, good formability, corrosion resistance, and non-magnetic properties, making it a preferred choice in industries such as aerospace. However, metals, including 7075 aluminum alloy commonly used in the aerospace industry, are still susceptible to corrosion in corrosive environments. One effective method to control corrosion is the use of inhibitors. An inhibitor is a chemical substance that, when added in small amounts to a corrosive environment, can effectively slow down or reduce the corrosion rate. This study investigates the corrosion rate using the potentiodynamic polarization method (Tafel plot) in seawater from Parangtritis Beach and rainwater from Yogyakarta City. The inorganic inhibitor used in this research is K₂CrO₄ with a concentration of 0.3%. The results show that the corrosion rate in seawater without inhibitors (pH 7.34) is 0.027799 mm/yr, while with inhibitors (pH 7.50), it decreases to 0.0053243 mm/yr. Similarly, the corrosion rate in rainwater without inhibitors (pH 6.66) is 0.0021987 mm/yr, while with inhibitors (pH 7.74), it reduces to 0.0017807 mm/yr. These findings demonstrate the effectiveness of K₂CrO₄ inhibitors in minimizing corrosion rates in both seawater and rainwater environments.
Aplikasi Pembelajaran Rc (Remote Control) Aeromodelling Untuk Santri Putri Pesantren Islamic Leadership School (Ils) Taruna Panatagama Setiawan, Ferry; Ardianto, Haris; Marausna, Gaguk; Sehono, Sehono; Jayadi, Arid
Literasi Jurnal Pengabdian Masyarakat dan Inovasi Vol 2 No 1 (2022)
Publisher : Pengelola Jurnal Politeknik Negeri Ketapang Jl. Rangga Sentap, Dalong Sukaharja, Ketapang 78813. Telp. (0534) 3030686 Kalimantan Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58466/literasi.v2i1.1782

Abstract

ILS Panatagama Islamic Boarding School does not yet have sufficient supporting facilities to facilitate learning activities, especially learning in the field of science. Learning facilities are needed to provide insight and prepare students before entering a higher level of education and getting involved with life in the midst of society.The service activity aims to help the application of science learning, especially Physics lessons on RC (Remote Control) Aeromodelling Airplanes at the Taruna Panatagama Putri ILS Islamic Boarding School. The approach method offered to solve partner problems is through observation and discussion with school management, followed by lectures, training workshops and assistance in the use of RC Aeromodelling, especially drones. Through this activity, Santri gain insight and operational strengthening of the use of drones for various activities
Analysis Of Tensile Strenghth Coconut Coir Fiber Composit Using The Vaccum Bagging Method Ilhami, Zaqi Arya Zullfawas; Setiawan, Ferry; Sehono, Sehono
Journal of Metallurgical Engineering and Processing Technology Vol 5, No 1 (August 2024)
Publisher : Universitas Pembangunan Nasional "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jmept.v5i1.10524

Abstract

Abstract The utilization of coconut fiber currently is limited to making brooms or for burning, necessitating further applications. One of these applications is its use as a reinforcement in composites, enhancing utility value and environmental friendliness. This study focuses on crafting composites from coconut fiber with variations in fiber orientation: random, 0°, and 45°.Tensile testing results reveal that the random fiber orientation variation exhibits the best performance, with a stress of 27.30 MPa, attributed to higher density. The 45° fiber orientation variation has the lowest stress (24.23 MPa) due to a lower fiber count. In bending tests, the random fiber orientation variation again performs the best, with a bending stress of 120 MPa, attributed to its high density that strengthens the structure. The 0° fiber orientation has the lowest bending stress (88.59 MPa) due to lower fiber density.Overall, utilizing coconut fiber as reinforcement in composites shows promising positive outcomes, with the random fiber orientation variation providing the best mechanical performance. This endeavor holds the potential to enhance the economic and ecological value of coconut fiber.Keywords: Composite, fiber, coconut, tensile, bending
Co-Authors Angger Bagus Prasetiyo Anugrah Putra Juang Zebua Arizka Dwi Supriono Aseng Franslee Sitopu Brian Teo Putra Dedy Dwi Setiawan Defri Erianto Lesmana Dermawan, Muhammad Deant Adzany Dhimas Wicaksono Dhimas Wicaksono Dhimas Wicaksono Dhimas Wicaksono Dhimas Wicaksono Diaza Erlangga Briyan Nugraha Dicky Prasetyo Koesgi Errisonia, Arfie Armelia Fajar Yulianto Prabowo Farid Jayadi Fatir Slametriadi Fatir Ferdinan Ashada Fernanda, Reza Dwi Ferry Setiawan Ferry Setiawan Ferry Setiawan Ferry Setiawan Ferry Setiawan Ferry Setiawan Gaguk Eko Gati Warsono Galang Anugrah Pratama Galang Gilang Argya Dyaksa Gilang Argya Dyaksa Graha Hardi Firmanda Haris Ardianto Haris Ardianto Haris Ardianto, Haris Hazhari, Fadhlah Hery Setiawan Hery Setiawan, Hery Ikbal Riski Putra Ikhsanul Madani Ilhami, Zaqi Arya Zullfawas Irmawa, Erwhin Isla Ikhlasul Hazmi Ivanda Zakaria Reynaldi Jayadi, Arid kiki selo ageng Ll. Aghyl Anugerah Mahesa Marausna, Gaguk Maruli Tua Pranata Mochammad Davi Yudha Prakasa Muhamad Kusnanto Muhammad Iqbal Aizi Iqbal Muhammad Nurul Ihsan P Purwanto Paramarta, Brillian Rakha Prabowo, Fajar Yulianto Prasetiyo, Erwan Eko Putra, Brian Teo Putra, Ikbal Rizki Rahmat Dwi Handoko Reo Yudhono Reza Sheirico Surbakti septio Novanto Sitopu, Aseng Franslee Widyanto, Dwi Zaqi Arya Zullfawas Ilhami