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Meen475 Honda Walking Assist

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Meen 475- Materials in Design Presentation
Members: Jorge Acosta, Ryan Broeckelmann, Charles McStravick, Keegan Smith, Grant Tollette

Published in: Engineering
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Meen475 Honda Walking Assist

  1. 1. Honda Walking Assist MEEN 475-502 Jorge Acosta, Ryan Broeckelmann, Charles McStravick, Keegan Smith, Grant Tollette
  2. 2. Background ● In the US, over 17 million individuals have walking disabilities ● There are approximately 7,800 spinal cord injuries per year ○ Resulting in approximately 4,000 newly paraplegic and 3,800 newly quadriplegic individuals each year ● In addition, over 50 million individuals are diagnosed with Arthritis ○ Approximately 1 in 6 of these individuals, or
  3. 3. Honda Walking Assist Device
  4. 4. Back Support Function ● Support plate ● Protect battery Constraints ● Plate Dimensions ● σf > 0.5 MPa Objective ● Minimize Mass ● Minimize Cost ● High Strength Free Variables ● Choice of Material ● Process Selection Material Selection 6061 Aluminum Polyethylene ABS Nylon
  5. 5. Material Analysis of Backplate AHP Rankings Material Score 6061 Al 0.363 PE100 0.236 ABS 0.214 Nylon 0.235
  6. 6. Legs Function ● Support leg weight ● Transmit power to user Constraints ● Dimensions of legs ● σf > 0.5 MPa ● Cannot Buckle Objective ● Minimize mass ● Minimize Cost ● Maximize Strength Free Variables ● Choice of material ● Process Selection Material Selection 6061 Aluminum Polyethylene ABS Nylon
  7. 7. Material Analysis of Legs AHP Rankings Acceptable confidence ratio value of .06 Material Score 6061 Al 0.436 PE100 0.159 ABS 0.193 Nylon 0.212
  8. 8. Manufacturing Process for Backplate Chosen process: Injection Molding
  9. 9. Manufacturing Process for Legs Chosen process: Die casting
  10. 10. Conclusion Back Support Nylon Legs 6061 Aluminum
  11. 11. References http://www.honda.com/mobility/walking-assist-technology https://www.disabled-world.com/disability/statistics/census-stats.php http://polymerdatabase.com/polymer%20classes/Polyamide%20type.html http://mech.vub.ac.be/teaching/info/Ontwerpmethodologie/Appendix%20les%203%20Materiaal%20Indice s.pdf http://www.grantadesign.com/download/pdf/teaching_resource_books/2-Materials-Charts-2010.pdf

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