| Affiliations: | AggiE_Challenge |
| Project Leader: | Avinash Danda abhi@tamu.edu Mechanical Engineering |
| Faculty Mentor: | Bruce Tai, Ph.D. |
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Meeting Times:
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Fall 2016 (Team Full) |
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Team Size:
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0 (Team Full) |
| Open Spots: | 0 |
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Special Opportunities:
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Team Needs:
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Description:
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Haptic devices are increasingly being used in medical training to simulate operations like bone cutting. Several haptic force models are developed in the last decade to simulate dental and temporal bone surgery. However, many of these methods ignore the principles of cutting mechanics in their formulation. The most common approaches are the once based on Hertz’s contact theory, Impulse based dynamics and Specific cutting energy. This study characterizes the forces in high-speed bone cutting and grinding for the use of haptic devices in surgical simulations. Unrealistic force feedback due to the lack of vibrational features is one of the most common drawbacks. Generally, the force profile can be decomposed to a mean force and a vibrational force magnitude. These forces are experimentally measured under various motions, including feed rate and tool orientation, to mimic manual operations and to understand the effects of these parameters. Change in feed rate was found to be insignificant in the overall force feedback, while the change in tool orientation showed statistically significant effects. The grinding burr and cutting burr also exhibited different forces under an identical condition. The explanation for the behavior of the forces based on the cutting and grinding conditions is discussed along with the results. |