Simulation of the performance of phased-array transducer
Using an established algorithm, a modeled phased array HIFU transducer was evaluated. The regularly spaced array was evaluated on the shifting of a single focus in the transverse and axial direction from the geometric focal point, and the shifting of the multi-foci in the transverse direction while...
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| Other Authors: | |
| Format: | Final Year Project (FYP) |
| Language: | English |
| Published: |
2017
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| Online Access: | http://hdl.handle.net/10356/72964 |
| _version_ | 1826125529030328320 |
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| author | Lean, Hui Qi |
| author2 | Zhou Yufeng |
| author_facet | Zhou Yufeng Lean, Hui Qi |
| author_sort | Lean, Hui Qi |
| collection | NTU |
| description | Using an established algorithm, a modeled phased array HIFU transducer was evaluated. The regularly spaced array was evaluated on the shifting of a single focus in the transverse and axial direction from the geometric focal point, and the shifting of the multi-foci in the transverse direction while retaining the same center coordinates. Relations between the peak pressure at focus and grating lobe, and the area of focus and grating lobe against the shift in the respective axis was found and discussed. The phased array HIFU transducer was found to be capable of shifting a safe steering distance of +1.1 cm in the transverse direction, between -3 cm and +0.5 cm in the axial direction from the geometric focus of (0, 0, 10) cm and a +0.4 cm multi-foci shift in the lateral direction. |
| first_indexed | 2024-10-01T06:37:48Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/72964 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:37:48Z |
| publishDate | 2017 |
| record_format | dspace |
| spelling | ntu-10356/729642023-03-04T18:39:03Z Simulation of the performance of phased-array transducer Lean, Hui Qi Zhou Yufeng School of Mechanical and Aerospace Engineering DRNTU::Engineering Using an established algorithm, a modeled phased array HIFU transducer was evaluated. The regularly spaced array was evaluated on the shifting of a single focus in the transverse and axial direction from the geometric focal point, and the shifting of the multi-foci in the transverse direction while retaining the same center coordinates. Relations between the peak pressure at focus and grating lobe, and the area of focus and grating lobe against the shift in the respective axis was found and discussed. The phased array HIFU transducer was found to be capable of shifting a safe steering distance of +1.1 cm in the transverse direction, between -3 cm and +0.5 cm in the axial direction from the geometric focus of (0, 0, 10) cm and a +0.4 cm multi-foci shift in the lateral direction. Bachelor of Engineering (Mechanical Engineering) 2017-12-15T06:04:24Z 2017-12-15T06:04:24Z 2017 Final Year Project (FYP) http://hdl.handle.net/10356/72964 en Nanyang Technological University 34 p. application/pdf |
| spellingShingle | DRNTU::Engineering Lean, Hui Qi Simulation of the performance of phased-array transducer |
| title | Simulation of the performance of phased-array transducer |
| title_full | Simulation of the performance of phased-array transducer |
| title_fullStr | Simulation of the performance of phased-array transducer |
| title_full_unstemmed | Simulation of the performance of phased-array transducer |
| title_short | Simulation of the performance of phased-array transducer |
| title_sort | simulation of the performance of phased array transducer |
| topic | DRNTU::Engineering |
| url | http://hdl.handle.net/10356/72964 |
| work_keys_str_mv | AT leanhuiqi simulationoftheperformanceofphasedarraytransducer |