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Pengaruh Ethanolamina (MEA) dalam Pembentukan TiO2 dari Bahan Awal Ti Butoksida Rika Rahayu; Posman Manurung; Yanti Yulianti
Jurnal Teori dan Aplikasi Fisika Vol. 7 No. 2 (2019): Jurnal Teori dan Aplikasi Fisika
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v7i2.216

Abstract

Desain Inti Reaktor SCWR (Supercritical Water Reactor) Model Teras Silinder (r, z) dengan Bahan Bakar Thorium Hasil Daur Ulang Setiyaningsih Setiyaningsih; Yanti Yulianti; Simon Sembiring
Jurnal Teori dan Aplikasi Fisika Vol. 7 No. 2 (2019): Jurnal Teori dan Aplikasi Fisika
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v7i2.223

Abstract

The Research of the supercritical water reactor (SCWR) core design of the cylindrical core model (r, z) using the SRAC program has been done. The SRAC basic code was PIJ and CITATION. PIJ was used to calculate the fuel level and CITATION was used to calculate the reactor core level. The calculation of the reactor core has been done on the 1/4 cylinder core (r, z) and the geometry of the fuel cell was the cylindrical cell. Reactor fuel material was thorium burned 40 GWd/t and 30 GWd/t. The neutron parameters in this research were fuel enrichment, burn up, reactor core size, reactor core configurations, multiplication factor, and power density distribution. Multiplication factor (k-effective) in this research was 1.000004, which is reactor was in a critical condition. The reactor core in critical condition had the size of radius (r) was 130 cm, height (z) was 270 cm and fuel enrichment 2.8262%. The maximum power density was 130.0808 Watts /cm3 which was located at a radius of 25 cm and 135 cm high. The peak power factor in the radial direction was 1.6063 and the peak power factor in the axial direction was 1.3189.
THE INFLUENCE OF ELECTRICAL VOLTAGE ON FORMATION OF SILICA NANO FIBER WITH ELECTROSPINNING METHOD Erika Sempana Ginting; Posman Manurung; Yanti Yulianti
Jurnal Teori dan Aplikasi Fisika Vol. 10 No. 1 (2022): Jurnal Teori dan Aplikasi Fisika
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v10i1.285

Abstract

Desain dan Realisasi Sistem Kontrol Kecepatan dan Ketinggian Motor Menggunakan Sensor Optocoupler dan Sensor Ultrasonik Berbasis Arduino untuk Aplikasi Pengaduk Otomatis Ahmad Rosadi; Posman Manurung; Yanti Yulianti; Roniyus Marjunus; Junaidi -
Jurnal Teori dan Aplikasi Fisika Vol. 12 No. 1 (2024): Jurnal Teori dan Aplikasi Fisika
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v12i1.339

Abstract

Pengaruh Ethanolamina Terhadap Pembentukan Fasa, Ukuran Partikel, dan Luas Permukaan Spesifik Nanotitania Menggunakan Metode Sol Gel Renita Maharani Fauzi; Posman Manurung; Yanti Yulianti
Jurnal Teori dan Aplikasi Fisika Vol. 9 No. 2 (2021): Jurnal Teori dan Aplikasi Fisika
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v9i2.354

Abstract

Rancang Bangun Mesin CNC Laser 4 Axis menggunakan Motor Stepper Tipe Nema 23 Terintergrasi Mach3 USB untuk Aplikasi Mesin Cutting Otomatis Hesti Wahyu Handani; Sri Ratna Sulistiyanti; Yanti Yulianti; Posman Manurung; Junaidi
Jurnal Teori dan Aplikasi Fisika Vol. 13 No. 02 (2025): Jurnal Teori dan Aplikasi Fisika
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v13i02.413

Abstract

Perancangan dan pembuatan mesin CNC Laser 4 Axis menggunakan motor stepper tipe nema 23 terintegrasi Mach3 USB untuk aplikasi mesin cutting otomatis telah dilakukan. Alat ini merupakan suatu alat laboratorium bidang manufaktur yang digunakan untuk memotong material berbahan akrilik secara otomatis dengan dimensi pemotongan mencapai 1000 mm x 2000 mm. Alat ini memiliki mata potong berupa laser dioda ukuran 40 watt yang mampu memotong lembaran akrilik dengan ketebalan 3 mm. Alat ini dikontrol menggunakan kontroler Mach3 board dan dikomunikasikan dengan software Mach3 menggunakan perintah berupa G-code. Alat ini mampu memotong lembaran akrilik ketebalan 3 mm dengan kecepatan maksimum 55 mm/menit. Untuk hasil pemotongan optimal, proses pemotongan akrilik dilakukan pada jarak laser terhadap akrilik yaitu sejauh 15 mm. Alat ini memiliki kesalahan relatif yaitu 0,27% dan deviasi sebesar 0,25 mm. Berdasarkan spesifikasi tersebut, mesin CNC Laser ini dapat diaplikasikan untuk mesin cutting otomatis untuk material berbahan dasar akrilik.
Co-Authors Abdullah Haris Adeliya Ayu Anggraini AGUS RIYANTO Agus Riyanto Ahmad Rosadi Apriliana Apriliana Dewi Efendi Dika Riyan Saputra Ediman Ginting Suka Erika Sempana Ginting harry prayoga Hesti Wahyu Handani Ilwan Pusaka ismatul lisa Junaidi Junaidi - Marjunus, Roniyus Muhammad Nursani Posman Manurung Pulung Karo-Karo Renita Maharani Fauzi Rika Rahayu Setiyaningsih Setiyaningsih Simon Sembiring Sri Harjanti Sri Ratna Sulistiyanti Syafriadi Syafriadi