#TITLE_ALTERNATIVE#

• Main Author: HADZIQOH (NIM: 20211301) ; Pembimbing Prof. Dr. Ing. Mitra Djamal, NUR
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/19085
• Institution: Institut Teknologi Bandung

3D fluxgate sensors are used to characterization magnetic properties.The aim of <br /> <br /> <br /> <br /> <br /> <br /> <br /> this study is developing a 3D fluxgate sensor to detect material magnetic in <br /> <br /> <br /> <br /> <br /> <br /> <br /> subsurface of soil using electromagnetic methods. Fluxgate sensor consists of <br /> <br /> <br /> <br /> <br /> <br /> <br /> three prime parts, an excitation coil, pick-up coil and core sensor. Excitation coil <br /> <br /> <br /> <br /> <br /> <br /> <br /> generates an internal magnetic field that serves as a reference magnetic field.The <br /> <br /> <br /> <br /> <br /> <br /> <br /> pick-up coil or secondary coil is used to measure the external magnetic field that <br /> <br /> <br /> <br /> <br /> <br /> <br /> affecting the magnetic field intensity from the solenoid coil as a main source. The <br /> <br /> <br /> <br /> <br /> <br /> <br /> most important part is the core sensor. 3D fluxgate has 3 sensors that <br /> <br /> <br /> <br /> <br /> <br /> <br /> perpendicular to each other measuring three component of the external magnetic <br /> <br /> <br /> <br /> <br /> <br /> <br /> field in x-axis, y-axis and z-axis. In this research, it is successfully build a 3D <br /> <br /> <br /> <br /> <br /> <br /> <br /> fluxgate with sensitivity of sensor x, sensor y, sensor z is 755 mV/&#956;T, 897 <br /> <br /> <br /> <br /> <br /> <br /> <br /> mV/&#956;T, and 835 mV/&#956;T, respectively. It is also shown that the higher magnetic <br /> <br /> <br /> <br /> <br /> <br /> <br /> susceptibility of soil will increase the signal of the magnetic field to the sensor. <br /> <br /> <br /> <br /> <br /> <br /> <br /> Varied size of ferrit are used in subsurface objects as magnetic materials. The <br /> <br /> <br /> <br /> <br /> <br /> <br /> larger size of material object will boost up the magnetic flux to the sensor.The <br /> <br /> <br /> <br /> <br /> <br /> <br /> shorter the distance between object and the sensors, will cause the signal of the <br /> <br /> <br /> <br /> <br /> <br /> <br /> magnetic field to the sensors go up, it is also happening on the contrary.