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Enhancing Prosthetic Limb Comfort and Functionality through Innovative Design Approaches

This project focuses on the development of a personalized prosthetic limb design aimed at improving the comfort and functionality of socket prostheses. By utilizing advanced engineering considerations, including material selection and impact analysis, we address the unique needs of individual users while ensuring safety and durability. We explore the applications of our design for medical purposes, particularly for athletes with disabilities, and identify challenges and areas for future opportunities. Our goal is to significantly enhance the quality of life for those who rely on prosthetics.

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Enhancing Prosthetic Limb Comfort and Functionality through Innovative Design Approaches

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  1. Design Project Marisa Bernal Neysa Alicea Angélica Báez Beatriz Ramos

  2. What would you do… if you loose any of your limbs?

  3. Outline • Design • Purpose • Applications • Engineering Considerations • Uniqueness • Challenges • Areas of Opportunities • New Techniques

  4. Prosthetic Leg LINER FEET SOCKET KNEE

  5. Socket

  6. Purpose • Improve the design of the prosthesis socket, making it more comfortable for the user, and thus improving the quality of life of people with disabilities.

  7. Applications • For medical purposes, related to athletes with disabilities.

  8. Engineering Considerations • Use impact analysis in our calculations • Use the safest approximations for our design • Proper material selection

  9. Material Characteristics Lightweight  low density Stiff  high Elastic Modulus Minimize Maximize

  10. Material Characteristics

  11. Material Characteristics • Material Possibilities • Wood • Technical Ceramics • Composites • Carbon Fiber Reinforced Plastics (CFRP) • Carbon Fiber Reinforced Plastic (CFRP) • Density: 1.8 g/cc • Modulus of Elasticity: 225 GPa • Sut: 3800 Mpa

  12. Uniqueness • A prosthesis has to be designed to fit the needs of a specific person. • It is customized for each user

  13. Challenge • Consider that the product is a medical device • Convert our project to shapes that we can analyze with the concept learned in class

  14. Material Selection

  15. Static Loads Analysis

  16. Static Load Analysis • For this analysis we used the following equations and obtained the shown values. 2.68 x 10-6m= 2.6 x 10-3mm

  17. Dynamic Load Analysis

  18. Dynamic Load Analysis • Impact Load • Maximum Elongation • M=mass • v=velocity at impact • L=length • E=Elastic Modulus • A=area

  19. Dynamic Load Analysis • Impact Load • Maximum stress • E = Elastic Modulus • δmax = maximum elongation • L = length

  20. Dynamic Load Analysis • We calculated the values of: • =3195.38KN = • = 128.69MPa = • Using stress concentrator factor Kf = 1.5 • = 192.95MPa • = 192.95MPa • We calculated the fatigue strength: • = 0.4 SUT • =1520MPa

  21. Dynamic Load Analysis • Stress concentration factors:

  22. Dynamic Load Analysis • Using Modified Goodman theory to calculate the safety factor:

  23. Sm Sm Sf 1.3 x 107 5 x 108 Component life • Aproximated it to the behavior of aluminum • a=19922.54, b= -0.2815 • N = 1.3 x 107 cycles

  24. Areas of Opportunity • Assumed values were used since data for our material was not available • Design uniqueness. • A different analysis is needed for each person

  25. New Knowledge • Reinforce teamwork skills • Loads distribution in prosthetic devices • Impact loads

  26. Thanks for your attention!!! Any Questions???

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