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Djafar, Alfian
Institut Teknologi Kalimantan
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Journal : Specta Journal of Technology

 1 
Perancangan Prototipe Turbin Angin Sumbu Horizontal Tiga Sudu Studi Kasus Institut Teknologi Kalimantan rizianiza, illa; Setiorini, Devy; Djafar, Alfian
Specta Journal Vol 2 No 3 (2018): SPECTA Journal of Technology
Publisher : Specta Journal

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (489.585 KB) | DOI: 10.0610/specta.v2i3.7

Abstract

Institut Teknologi Kalimantan (ITK) merupakan salah satu perguruan tinggi negeri baru yang berlokasi di tengah hutan di Balikpapan. Berdasarkan data Badan Meteorologi, Klimatologi dan Geofisika, kecepatan angin rata-rata di sekitar ITK berkisar antara 5 km/h ? 18 km/h. Potensi angin yang melimpah dapat dimanfaatkan untuk merancang turbin angin yang sesuai yaitu turbin angin tipe horizontal.  Perancangan turbin angin sumbu horizontal dengan tiga sudu dilakukan dengan variasi besar sudut serang untuk menentukan tingkat efisiensi turbin angin. Variasi besar sudut serang adalah 50, 100, dan 250. Pengujian turbin angin dilakukan pada beberapa tingkat kecepatan angin diantaranya 3.8 m/s, 4.3 m/s, 5.8 m/s. Hasil pengujian menunjukkan bahwa daya listrik terbesar dihasilkan pada pengujian turbin angin sumbu horizontal dengan variasi sudut serang 250 yaitu sebesar 118.7 mW.
Perancangan Prototipe Turbin Angin Sumbu Horizontal Tiga Sudu Studi Kasus Institut Teknologi Kalimantan rizianiza, illa; Setiorini, Devy; Djafar, Alfian
SPECTA Journal of Technology Vol 2 No 3 (2018): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (489.585 KB) | DOI: 10.35718/specta.v2i3.7

Abstract

Institut Teknologi Kalimantan (ITK) merupakan salah satu perguruan tinggi negeri baru yang berlokasi di tengah hutan di Balikpapan. Berdasarkan data Badan Meteorologi, Klimatologi dan Geofisika, kecepatan angin rata-rata di sekitar ITK berkisar antara 5 km/h ? 18 km/h. Potensi angin yang melimpah dapat dimanfaatkan untuk merancang turbin angin yang sesuai yaitu turbin angin tipe horizontal.  Perancangan turbin angin sumbu horizontal dengan tiga sudu dilakukan dengan variasi besar sudut serang untuk menentukan tingkat efisiensi turbin angin. Variasi besar sudut serang adalah 50, 100, dan 250. Pengujian turbin angin dilakukan pada beberapa tingkat kecepatan angin diantaranya 3.8 m/s, 4.3 m/s, 5.8 m/s. Hasil pengujian menunjukkan bahwa daya listrik terbesar dihasilkan pada pengujian turbin angin sumbu horizontal dengan variasi sudut serang 250 yaitu sebesar 118.7 mW.
PERANCANGAN SISTEM PENGEREMAN MOBIL MENGGUNAKAN MAMDANI FUZZY LOGIC CONTROL Rizianiza, Illa; Djafar, Alfian
SPECTA Journal of Technology Vol 1 No 3 (2017): SPECTA Journal of Technology
Publisher : LPPM ITK

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

Abstract

Increase in the number of vehicles, especially cars can increase the chances of accidents. Accidents happen because caused by several factors, including human error, environmental and technical vehicle. Human error factor caused by the driver of the vehicle less focus so less appropriate in decision making at the time of driving. Therefore, vehicles that have technology that can reduce the occurrence of accidents. One technology of a potential car vehicle to be developed in order to reduce the number of accidents is the technology of the brakingsystem. Car braking system is the most important safety system that it has. This paper provides an automatic car braking system using Mamdani Fuzzy Logic Control. This car braking system consist of two inputs and one output. Inputs are car position and car velocity. Car position represents the distance of the car from the obstacle detected and velocity represents the velocity of the car towards the obstacle. This output is brake that represents the car force to stop the car. The inputs use five membership funtions and the output use three membership functions. The car braking system designed uses twenty five rules. Performance analysis of the braking system is carried out on the braking system's ability to avoid obstacles. The result is the vehicle can brake at a distance 30m vehicle from the obstacle. The vehicle braking system began to brake the vehicle at 2.5 s with 9263 N up to 3.7 s.
PERANCANGAN SISTEM PENGEREMAN MOBIL MENGGUNAKAN MAMDANI FUZZY LOGIC CONTROL Rizianiza, Illa; Djafar, Alfian
SPECTA Journal of Technology Vol 1 No 3 (2017): SPECTA Journal of Technology
Publisher : LPPM ITK

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

Abstract

Increase in the number of vehicles, especially cars can increase the chances of accidents. Accidents happen because caused by several factors, including human error, environmental and technical vehicle. Human error factor caused by the driver of the vehicle less focus so less appropriate in decision making at the time of driving. Therefore, vehicles that have technology that can reduce the occurrence of accidents. One technology of a potential car vehicle to be developed in order to reduce the number of accidents is the technology of the brakingsystem. Car braking system is the most important safety system that it has. This paper provides an automatic car braking system using Mamdani Fuzzy Logic Control. This car braking system consist of two inputs and one output. Inputs are car position and car velocity. Car position represents the distance of the car from the obstacle detected and velocity represents the velocity of the car towards the obstacle. This output is brake that represents the car force to stop the car. The inputs use five membership funtions and the output use three membership functions. The car braking system designed uses twenty five rules. Performance analysis of the braking system is carried out on the braking system's ability to avoid obstacles. The result is the vehicle can brake at a distance 30m vehicle from the obstacle. The vehicle braking system began to brake the vehicle at 2.5 s with 9263 N up to 3.7 s.
STUDI DEFLEKSI PADA STRUKTUR BATANG SEBAGAI DASAR PEMILIHAN FRAME KURSI RODA ANAK Djafar, Alfian; Rizianiza, Illa
SPECTA Journal of Technology Vol 1 No 3 (2017): SPECTA Journal of Technology
Publisher : LPPM ITK

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

Abstract

Penelitian ini dilandasi oleh adanya penggunaan Polyvinyl Chloride (PVC) sebagai material yang digunakan dalam pembuatan frame kursi roda. Kursi roda ini dikhususkan pada anak-anak, dimana berat badan anak dan berat robot kursi roda tidak melebihi 23 kg. Pipa PVC yang digunakan adalah jenis AW, schedule 40, dan schedule 80. Diameter pipa dibatasi pada diameter ½ in,3/4 in,1 in,1 1/4 in untuk masing-masing jenis pipa PVC. Tujuan penelitian ini adalah menentukan dimensi dari pipa PVC yang aman digunakan pada bobot yang telah ditentukan, berdasarkan analisis defleksi. Batas defleksi yang diizinkan untuk penggunaan pipa ini sebesar 0.938mm. Metode pendekatan teoritis dan menggunakan program simulasi LISA digunakan pada penelitian ini. Hasil penelitian menunjukkan bahwa dimensi pipa yang aman digunakan adalah pipa PVC jenis schedule 40 dan schedule 80. Defleksi PVC 1 1/4 in schedule 40 berdasarkan perhitungan teoritis sebesar 0.7614 mm dan 0.7610 mm berdasarkan simulasi LISA. Sedangkan PVC 1 1/4 in schedule 80 memiliki defleksi sebesar 0,6131 mmberdasarkan perhitungan teoritis, dan 0,6128 mm didapatkan dari hasil simulasi LISA. Dari penelitian ini, dipilih Pipa PVC 1 1/4 in schedule 40 sebagai material dalam perancangan dan pembuatan frame kursi roda.
STUDI DEFLEKSI PADA STRUKTUR BATANG SEBAGAI DASAR PEMILIHAN FRAME KURSI RODA ANAK Djafar, Alfian; Rizianiza, Illa
SPECTA Journal of Technology Vol 1 No 3 (2017): SPECTA Journal of Technology
Publisher : LPPM ITK

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

Abstract

Penelitian ini dilandasi oleh adanya penggunaan Polyvinyl Chloride (PVC) sebagai material yang digunakan dalam pembuatan frame kursi roda. Kursi roda ini dikhususkan pada anak-anak, dimana berat badan anak dan berat robot kursi roda tidak melebihi 23 kg. Pipa PVC yang digunakan adalah jenis AW, schedule 40, dan schedule 80. Diameter pipa dibatasi pada diameter ½ in,3/4 in,1 in,1 1/4 in untuk masing-masing jenis pipa PVC. Tujuan penelitian ini adalah menentukan dimensi dari pipa PVC yang aman digunakan pada bobot yang telah ditentukan, berdasarkan analisis defleksi. Batas defleksi yang diizinkan untuk penggunaan pipa ini sebesar 0.938mm. Metode pendekatan teoritis dan menggunakan program simulasi LISA digunakan pada penelitian ini. Hasil penelitian menunjukkan bahwa dimensi pipa yang aman digunakan adalah pipa PVC jenis schedule 40 dan schedule 80. Defleksi PVC 1 1/4 in schedule 40 berdasarkan perhitungan teoritis sebesar 0.7614 mm dan 0.7610 mm berdasarkan simulasi LISA. Sedangkan PVC 1 1/4 in schedule 80 memiliki defleksi sebesar 0,6131 mmberdasarkan perhitungan teoritis, dan 0,6128 mm didapatkan dari hasil simulasi LISA. Dari penelitian ini, dipilih Pipa PVC 1 1/4 in schedule 40 sebagai material dalam perancangan dan pembuatan frame kursi roda.
Perancangan Sistem Pengereman Mobil Menggunakan Mamdani Fuzzy Logic Control Illa Rizianiza; Alfian Djafar
SPECTA Journal of Technology Vol. 1 No. 3 (2017): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (413.26 KB)

Abstract

Increase in the number of vehicles, especially cars can increase the chances of accidents. Accidents happen because caused by several factors, including human error, environmental and technical vehicle. Human error factor caused by the driver of the vehicle less focus so less appropriate in decision making at the time of driving. Therefore, vehicles that have technology that can reduce the occurrence of accidents. One technology of a potential car vehicle to be developed in order to reduce the number of accidents is the technology of the brakingsystem. Car braking system is the most important safety system that it has. This paper provides an automatic car braking system using Mamdani Fuzzy Logic Control. This car braking system consist of two inputs and one output. Inputs are car position and car velocity. Car position represents the distance of the car from the obstacle detected and velocity represents the velocity of the car towards the obstacle. This output is brake that represents the car force to stop the car. The inputs use five membership funtions and the output use three membership functions. The car braking system designed uses twenty five rules. Performance analysis of the braking system is carried out on the braking system's ability to avoid obstacles. The result is the vehicle can brake at a distance 30m vehicle from the obstacle. The vehicle braking system began to brake the vehicle at 2.5 s with 9263 N up to 3.7 s.
Perancangan Kebijakan Sistem Ketenagalistrikan Kawasan Institut Teknologi Kalimantan Aprillia, Happy; djafar, alfian; Filiana, Firilia
SPECTA Journal of Technology Vol. 7 No. 3 (2023): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v7i3.633

Abstract

The Kalimantan Institute of Technology (ITK) already has 17 study programs and 3002 active students until 2021 and is projected to have 20 study programs by 2025. However, geographical location of ITK affect ITK facilities readiness that later supporting tridharma activities to be carried out perfectly. The Mechanical, Electrical and Plumbing System (MEP) at the ITK Campus needs to be designed with a sustainable design in order to accommodate the needs of electricity, sound, air conditioning, clean water, and dirty water on the ITK Campus until 2025. This study aims to design a sustainable MEP design for distribution of electricity especially in lightning protection in order to meet the characteristics of safe, reliable and appropriate design. The stages involved include 8 (eight) processes, namely: 1) data collection and design of the existing MEP, 2) projecting the growth of the academic community and equipment needs until 2025, 3) reviewing the existing MEP system as the existing protection system, 4) calculation of the suitability of the existing MEP system based on projected needs, SNI and SPLN, 5) planning for improvement of existing systems and plans for developing MEP systems, 6) making working drawings of the MEP system, 7) drafting Bill of Quantity MEP, and 8) MEP budgeting. This research is expected to produce output in the form of MEP planning drawings that are recommendation of detailed engineering design which are documented in strategic policies through the rector's regulation. This research is aimed to be used as a reference for MEP design for ITK development in the future development.
Analisis Preferensi dan Partisipasi Civitas Akademik Institut Teknologi Kalimantan Dalam Pemilahan Sampah Rahendaputri, Chandra Suryani; Endrawati, Budiani F.; Djafar, Alfian; Sutakin, Mariana Ulfah; Gunawan, Arie Indra; Hizbullah, Moh. Naufal; Armida, Gina; Savera, Arum; Dzulfiqa, Muhammad Rizky
SPECTA Journal of Technology Vol. 8 No. 2 (2024): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v8i2.1043

Abstract

Solid waste management problems have become a common problem in Indonesia. Based on data from the Central Bureau of Statistics' Environmental Care Behavior Indicator in 2017, it shows that 58.32% of Indonesians do not sort their waste. Kalimantan Institute of Technology (ITK) is a campus that carries the concept of eco-campus. Waste segregation has been programmed, but in reality in the field, waste segregation is not running. Therefore, this study was conducted with the aim of knowing the preferences and participation of ITK academic community in waste segregation at ITK. The survey results showed that out of 380 respondents, although 90% had seen posters about waste segregation at ITK, only 57.6% stated that they had done waste segregation at ITK, which was mostly based on the factor of facilitating management both by ITK and at the landfill. For the other 44.2% of respondents who do not or only sometimes do waste segregation, it was found that the biggest factor that made them do so was based on the desire to segregate at the beginning, but when opening the trash can, the waste inside was already mixed.
Co-Authors Achmad Farizul Hasmi Aditiya Ramadhan Adnan Rusdan Agung Prabowo Ahmad Kamil Muqoffi Al Wafi, Rifqi Alfi Nandar Amba Matarru, Andre Andreas Anju Manik Anzan Aulia Yahya Aprillia, Happy Arie Indra Gunawan Armida, Gina Arrizal, Daffa Akmalludin Chandra Suryani Rahendaputri Christandi Batubara, Yongki Cloudiandy Mukti Kimana Deliasgarin Radyantho, Kholiq Desly Angeline Sa’pangan Devy Setiorini Sa’adiyah Dewa Ichwan Suharisma Dianiswara, Anggoronadhi Dzulfiqa, Muhammad Rizky Endrawati, Budiani F. Endrawati, Budiani Fitria Ersamada Sinaga Etni Jechonia Malchieli Faadhilah Faadhilah Fadhillah, Muhammad Hakim Faisal Manta Fajar Habib Syarifudin Fatoni, Mahrus Ali Felita Tsany Pandya Filiana, Firilia Gad Gunawan Gad Gunawan Gofind Hasoloan Hakiky, Rizal Muhammad Haliq, Ridhwan Happy Aprilia Haryono, Hadhimas Dwi Hasiholan Lumban Tobing, Kevin Hasyer Kamal Baron Wicaksono Hendi Prasetya, Bagas Hizbullah, Moh. Naufal Idhil Ismail, Andi Illa Rizianiza Ivan Christofel Hutabarat, Frans Jamil, Muchammad Jordy Irawan Keumala Banaget, Cut Kholiq Deliasgarin Radhyantho Kholiq Deliasgarin Radyantho Lantiunga Celine Agvi Sanchia Linda Linggar Rengga Alridho Mahmudi Syahlie, Razif Malau, Kevin Joshwadi Manta, Faisal Margyatno, Ageng Mart Shoodiqin, Dian Maulana Bayu Iqmal Mei Citra Limbong Mufadhol, Andiko Na’im Muhammad Gilang Kentjana Muhammad Irwan Gunawan Muhammad Noor El-Haj Muhammad Raihan Laden Muhammad Syaiful Umara Myhammad Ibnu Habbil Sunarno Naufal Akmal Oddy Adam Parsaulian Lobo Silalahi, Yonathan Pramana, Muhammad Ardi Dwi Rahendaputri, Chandra Suryani Rahma Sarita Dewi Rahman, Shafera Maulana Ramadhani, Sajri Reza Kristiyanto Ridho Novfyantoro Ridhwan Haliq Ridhwan Haliq Rifqi Al Wafi Rijal Surya Rahmany Rizaldy Gunawan rizianiza, illa Rukayya Syakira Savera, Arum Sofia Annisa Suanggana, Doddy Sujana, I Made Ivan Wiyarta Cakra Sutakin, Mariana Ulfah Syuhada, Subhan Tina Febriana Umi Sholikah Usman Ali Vidi Apriany Wahab, Mohammad Abdul Widya Hadiprasetiyo Wiratmoko, Eka Yoga Yonathan Parsaulian Lobo Silalahi Yun Tonce Yusuf Afudin