SUPERVISORS |
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| Supervisor - 1 | Prof Ling Shih Fu |
| Supervisor - 2 | - |
DETAILS |
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| Proj No | A140 |
| Title | A Sensor for Measurement of Large Electrical Current |
| Objective | To develop a low cost current sensor for measuring large electrical current incurring in welding processes. |
| Scope | The electrical current incurring in resistance welding processes can be as high as 20000 Amp. Commercially available current sensors are either suitable for low current measurement only or too expensive for industrial use. In this project, a ring with surface-bonded strain gauges will be designed to measure the current. The ring will be deformed when put around the electricity supply wire because of the electromagnetic force. A Wheaston bridge formed by the strain guges will provide a voltage proportional to the current if the ring is properly designed. The student will do a simple calculation to design the sensor, and then prototype and test its performance. |
| Prerequisites | - |
| Area - 1 | Measurements |
| Area - 2 | Mechatronics |
| Area - 3 | Mechanics of Solid & Materials |
| Category | Design and Development |
| SRP | - |
| Stream | Mechatronics |
| ISP | No |
WEIGHTAGE |
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| Literature Survey | 15 |
| Design | 25 |
| Fabrication and testing | 30 |
| Laboratory/site investigation | 30 |