DGIST Scholar: Implementation and Characterization of Wideband 3D Vector Hydrophone with Simple Structured Compressive-type Piezoelectric Accelerometer

Department of Robotics and Mechatronics Engineering Theses Master

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Implementation and Characterization of Wideband 3D Vector Hydrophone with Simple Structured Compressive-type Piezoelectric Accelerometer

Title: Implementation and Characterization of Wideband 3D Vector Hydrophone with Simple Structured Compressive-type Piezoelectric Accelerometer

Description: Vector hydrophone, Piezoelectric accelerometer, Underwater Acoustics

Table Of Contents: I. INTRODUCTION 1
1.1 Research Background 1
1.2 Research Objective 11
II. DESIGN AND FABRICATION 14
2.1 Spherical hydrophone 14
2.2 Directional hydrophone 17
2.3 Assembly of the prototype vector hydrophone 30
III. CHARACTERIZATION AND RESULTS 32
3.1 Characterization of the Fabricated Vector Hydrophone 32
3.1.1 In-air characterization of the directional hydrophone 32
3.1.2 Underwater characterization of the vector hydrophone 35
3.2 Optimization of the vector hydrophone 39
3.2.1 Second optimization of vector hydrophone 39
3.2.2 Third optimization of vector hydrophone 49
IV. CONCLUSION AND DISCUSSION 57
4.1 Conclusion 57
4.2 Discussion and Future work 57
REFERENCES 59
요 약 문 62