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TEKNIK
Published by Universitas Diponegoro
ISSN : 08521697     EISSN : 24609919     DOI : -
Core Subject : Engineering,
Journal yang mempublikasikan artikel-artikel ilmiah dari berbagai disiplin ilmu rekayasa/keteknikan. Artikel-artikel yang dipublikasikan di Jurnal TEKNIK meliputi hasil-hasil penelitian ilmiah asli (prioritas utama), artikel ulasan ilmiah yang bersifat baru (tidak prioritas), atau komentar atau kritik terhadap tulisan ilmiah yang dipublikasikan oleh Jurnal TEKNIK.
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Articles 13 Documents
Search results for , issue "Volume 31, Nomor 1, Tahun 2010" : 13 Documents clear
DESAIN PERANGKAT-KERAS KOMPONEN PENDUKUNG PENGEMBANGAN RADAR SEKUNDER UNTUK TRACKING TIGA DIMENSI TRAYEKTORI UJI COBA ROKET Darjat, Darjat
TEKNIK Volume 31, Nomor 1, Tahun 2010
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (311.517 KB) | DOI: 10.14710/teknik.v31i1.1749

Abstract

Topic executed by is " Development of Secondary Radar For The Tracking Of Three Dimension Trajectory Test-Drive The National Rocket".In first year of research focussed at desain and making of component of hardware of producer of radio frequency 900 MHZ. Technological Development of rocket is not quit of other technology, one of them is secondary radar. Communications of radio data overcome through the secondary radar need a component hardware capable to awaken the radio frequency as according to wanted job frequency.This article study about method of hardware desain transceiver which usually implementation by PLL ( Phase Locked Loop) or underlayer modulation locked by the phase to arrange the VCO ( Voltage Controlled Oscillator) what is used. Component used by is IC transceiver RFM12BP integrating all function of radio frequency in single chipPrototype which is being developed by to build the transceiver FSK use the unit microcontroller , crystal, capacitor and antenna; separated. Obtained by result that system of radio frequency developed by earn the implementation for the system of secondary radar ably stable frequency at specified frequency arrangement
ANALISIS FAKTOR INTENSITAS TEGANGAN (SIF) DENGAN VARIASI PANJANG RETAK PADA PELAT GELADAK UTAMA KAPAL “ MT. KLAWOTONG “ DENGAN MENGGUNAKAN METODE ELEMEN HINGGA (FEM) Kiryanto, Kiryanto
TEKNIK Volume 31, Nomor 1, Tahun 2010
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (774.176 KB) | DOI: 10.14710/teknik.v31i1.1754

Abstract

Crack defect on main deck plate is source of failure ship structure. Small intensity of crack in the future canbe to large influence lateral force and bending moment. Crack defect characteristics can be to know shearintensity factor (SIF) on main deck is used mathematics simulation model based on fracture mechanics (FM)and finite element method (FEM). Goal of this research know characteristics main deck plate get a crack withload forces while deck plate start is loading until to crack propagation good stability.The MT Klawotong is chose in this research . Main deck plate is location as the sample. It is number 3 oncargo oil. Any analysis of data that is to counting of profile constructions, length strength, modeling withANSYS Version 9.0 and counting of shear intensity factor (SIF).Research on this structure failure result any substance that is, Sagging condition plate shears 50.34 MPa withsafety factor 8,939 crack long maximum is 0.02 m, value of shear intensity factor (SIF) KI WD. Pilkey = 12.615MPa m , KII WD. Pilkey = 0 MPa m , KI ANSYS = 13.,451 MPa m , KII ANSYS = 0.693 MPa m . Prosentaso oferror counting programe KI = 0.062 %, KII = 1% . The ather hand Hoging condition plate shears 15.08 MPawith safety factor 29.841 crack long maximum is 0 .3 m , value of shear intensity factor (SIF) KI WD. Pilkey=14.,645 MPa m , KII WD. Pilkey = 0 MPa m , KI ANSYS = 15.585 MPa m , KII ANSYS = 0.352 MPa m ,Prosentaso of error counting programe KI = 0.062 %, KII = 1%.
APLIKASI PENENTUAN PARAMETER TRANSFORMASI LOKAL BATU HIJAU UNTUK SURVEI DAN PEMETAAN AREA TAMBANG PT. NEWMONT NUSA TENGGARA Darmo Yuwono, Bambang; Marzuki, Amin
TEKNIK Volume 31, Nomor 1, Tahun 2010
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (206.793 KB) | DOI: 10.14710/teknik.v31i1.1750

Abstract

Most of mining technical activities, especially survey and mapping use local reference system, including inmining area Batu Hijau of PT Newmont Nusa Tenggara. While the data obtained by using GPS measurement,it should be transform from global coordinate system to local coordinatesystem.The process needstransformation parameters to do coordinate transformation. The object of this research is to build anapplication in determining transformation parameters from global system to local system and analyzeparameters of Batu Hijau of PT Newmont Nusa Tenggara. These transformation parameters are then expectedto be used for determining coordinate in local reference. The result can be obtained the most appropriate localparameters of Batu Hijau for surveying and mapping with geometric transformation accuracy.For this reaserch Melodensky Badekas 3D relatively better than Bursa Wolf 3D appropriate geometricaccuracy are SD 0.0919 m; RMSE 0.0322 m for the Melodensky Badekas and SD 0.2506 m; RMSE 0.0322 mfor the Bursa Wolf. Affine 2D relatively better than Helmert 2D are SD 0.3082 m; RMSE 0.0931 m for Affine2D and SD 0.3531 m; RMSE 0.1070 m for the Helmert 2D.

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