{"id":82,"date":"2022-09-26T06:32:26","date_gmt":"2022-09-26T06:32:26","guid":{"rendered":"https:\/\/hassanbokhari.xyz\/?page_id=82"},"modified":"2023-04-13T06:30:37","modified_gmt":"2023-04-13T06:30:37","slug":"dp-4","status":"publish","type":"page","link":"https:\/\/hassanbokhari.xyz\/?page_id=82","title":{"rendered":"DP – 4"},"content":{"rendered":"\n
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Not a Pun, It\u2019s Real Life<\/strong>
(iBiomed Project 4)<\/em><\/h2>\n\n\n\n
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\ud83d\udc64<\/strong> Background<\/strong><\/p>\n\n\n\n

David is a quadriplegic individual who is paralyzed from the chest down and has limited hand mobility. Despite his physical limitations, he is passionate about sports and has set a goal to complete an IRONMAN triathlon. David wishes to overcome physical challenges to participate in swimming activities, including competitive events. He is determined to maintain his independence in the water and pursue his passion for swimming while breaking down barriers.<\/p>\n<\/div>\n\n\n\n

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Identified Solution<\/strong><\/h3>\n<\/div>\n\n\n\n
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\u2764\ufe0f Need<\/strong><\/h3>\n<\/div>\n<\/div>\n\n\n\n
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The GlideMaster<\/figcaption><\/figure>\n<\/div>\n\n\n\n
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The GlideMaster <\/strong>is a swimming brace designed for individuals with limited mobility, such as quadriplegics. <\/p>\n\n\n\n

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  • It aims to enhance swimming performance by reducing hydrodynamic drag and making the user more streamlined in the water.<\/li>\n\n\n\n
  • The brace features a knee-locking mechanism, Velcro straps for secure attachment, and thumb hooks for ease of use. <\/li>\n\n\n\n
  • Constructed from PLA+, the neutrally buoyant GlideMaster is both durable and compliant with Ironman guidelines.<\/li>\n<\/ul>\n<\/div>\n\n\n\n
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    Design a solution for David that helps improve his swimming by reducing drag and making him more streamlined in water. The solution must be waterproof, must not depend on the movement of the legs or hips, and must not make him dependent on someone else.<\/em><\/p>\n<\/blockquote>\n<\/div>\n<\/div>\n\n\n\n

    <\/div>\n\n\n\n
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    \ud83c\udfafObjectives<\/strong><\/p>\n\n\n\n

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    1. Should improve swimming\u202f\u202f <\/li>\n\n\n\n
    2. Should adhere by Ironman guidelines\u202f <\/li>\n\n\n\n
    3. Must make him more streamlined in water\u202f <\/li>\n\n\n\n
    4. Should be comfortable\u202f <\/li>\n\n\n\n
    5. Should be affordable for the client<\/li>\n<\/ol>\n<\/div>\n\n\n\n
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      \ud83d\udea7 Constraints<\/strong><\/p>\n\n\n\n

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      1. Must be waterproof\u202f <\/li>\n\n\n\n
      2. Must not impede swimming progress\u202f <\/li>\n\n\n\n
      3. Must not depend on movement of legs and hips\u202f <\/li>\n\n\n\n
      4. Must not make him dependent on someone else  <\/li>\n<\/ol>\n<\/div>\n\n\n\n
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        \ud83d\udd11<\/strong> Functions<\/strong><\/p>\n\n\n\n

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        1. Helps reduce drag <\/li>\n<\/ol>\n<\/div>\n<\/div>\n\n\n\n
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          10$ to make<\/p>\nPossibility of further reducing costs through mass production and alternative manufacturing methods <\/cite><\/blockquote>\n<\/div>\n\n\n\n

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          Automatic Locking mechanism to ensure that he is able to be independent <\/strong>and not rely the design on intricate movements. <\/figcaption><\/figure>\n<\/div>\n\n\n\n
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          Designed to be neutrally buoyant with a 75% infill to adhere to IRONMAN guidelines <\/strong>as well as not being a disadvantage in the water.<\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n
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          \ud83e\uddd1 My Individual Contributions<\/strong><\/p>\n\n\n\n

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          • As project coordinator, created a log of all additional meetings as well as creating detailed notes and a summary on the topics discussed.
            <\/li>\n\n\n\n
          • Utilized CAD<\/strong> towards creation and design of all components of the 1st, 2nd, 3rd and final 3D printed prototype on my personal 3D printer<\/strong>.
            <\/li>\n\n\n\n
          • Developed an automatic locking mechanism<\/strong> from scratch as-well as thumb hooks to account for dexterity restrictions<\/strong> with the customer base.
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          • Conducted extensive material research<\/strong> and testing using both inventor software and in person testing to come up with a viable material to print with.
            <\/li>\n<\/ul>\n\n\n\n
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            Full Assembly of the Glidemaster made on Inventor with all componenets.<\/figcaption><\/figure>\n\n\n\n

            Contribution Images<\/strong> <\/p>\n<\/div><\/div>\n<\/div>\n\n\n\n

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            \ud83d\udd28<\/strong> Applied Skills<\/strong><\/p>\n\n\n\n

            \ud83e\udde0 Soft Skills<\/strong><\/p>\n\n\n\n

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            • Idea Generation<\/li>\n\n\n\n
            • Time management <\/li>\n\n\n\n
            • Note – taking<\/li>\n\n\n\n
            • Presentation<\/li>\n<\/ul>\n\n\n\n

              \u2699\ufe0f<\/strong> Hard Skills<\/strong><\/p>\n\n\n\n

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              • \"\" Autodesk Inventor<\/li>\n\n\n\n
              • \"\" PowerPoint<\/li>\n\n\n\n
              • \"\" PrusaSlicer (3D Printing)<\/li>\n\n\n\n
              • \ud83d\udee0\ufe0f Prototyping<\/li>\n<\/ul>\n\n\n\n
                <\/div>\n<\/div><\/div>\n<\/div>\n<\/div>\n\n\n\n
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                Complete design and assembly of final assembly and components.<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n\n
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                \"\"<\/figure>\n\n\n\n
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                Simulated static stress tests conducted to optimize design and material strength. Top is PLA vs Bottom is PLA+<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n\n
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                Thumb hooks to allow for easy usage of device when wrapping around legs.<\/strong><\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n

                \ud83d\udcd0 Design Process<\/h2>\n\n\n\n
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                1.After creating some general preliminary sketches <\/strong>for an idea for our solution we came to a consensus on the general shape\/idea<\/strong> of our design.
                <\/p>\n\n\n\n

                2. We created some general prototypes<\/strong> of our ideas to show during the TA meetings iterating until we reached our first 3D printed prototype <\/strong>(Identifiable with white rod component)<\/p>\n\n\n\n

                3. From TA meetings decided to adopt KISS method (keep it simple, stupid)<\/strong> rather than going for a complex solution<\/p>\n\n\n\n

                4. After experiencing issues with the materials on our initial prototypes we eventually printed out of PLA+<\/strong> which was able to withstand basic forces,<\/p>\n\n\n\n

                5. We testing the device in water <\/strong>once before finding some issues related to jamming of the mechanism so we reprinted for the final prototype<\/strong> this time also making our solution neutrally buoyant <\/strong>so it is Ironman ready.<\/strong><\/p>\n\n\n\n

                6. Overall printed over 2 KG worth of material and over 70 hours of print <\/strong>time to reach the final product for the GlideMaster.<\/p>\n<\/div>\n\n\n\n

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                Preliminary sketch of a more complex idea<\/figcaption><\/figure>\n\n\n\n
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                Preliminary sketch incorporating an unpractical mechanism<\/figcaption><\/figure>\n\n\n\n
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                Final Preliminary sketch<\/figcaption><\/figure>\n<\/figure>\n\n\n\n
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                Early prototype of a design which incorporated a kicking motion<\/figcaption><\/figure>\n\n\n\n
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                A more rigid prototype design<\/figcaption><\/figure>\n\n\n\n
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                First printed prototype incorporating the pull mechanism<\/figcaption><\/figure>\n<\/figure>\n\n\n\n
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                (Left) Final velcro straps used (Right) Previous velcro straps<\/figcaption><\/figure>\n<\/figure>\n\n\n\n
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                Various 3D printed parts\/prototypes used when creating final product<\/figcaption><\/figure>\n<\/figure>\n\n\n\n
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                First test-run failed as product snapped before being able to swim<\/figcaption><\/figure>\n\n\n\n
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                PETG was too brittle and snapped before even much application.<\/figcaption><\/figure>\n\n\n\n
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                Final product printed with PLA+ and able to successfully be used.<\/figcaption><\/figure>\n<\/figure>\n<\/div>\n\n\n\n
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                • \u274cPrevious sketches\/ideas were based on a lot more complex mechanisms and were very hard practically to execute.<\/li>\n\n\n\n
                • \u2705We decided to keep the idea more simple and instead of trying to do multiple things at once just stick to straightening the knee joint and keeping the legs together to streamline the body<\/li>\n<\/ul>\n\n\n\n
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                  • \u274c Initial design for Velcro straps were thin and didn’t have the hooks. This caused it to be difficult to anchor the legs and also harder to wrap around for individuals with dexterity issues. It also was not waterproof<\/li>\n\n\n\n
                  • \u2705Redesigned using new Velcro which was waterproof and significantly wider with loops sewed at ends to solve the challenges faced above. <\/li>\n<\/ul>\n\n\n\n
                    <\/div>\n\n\n\n
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                    • \u274c Initially when we printed with PLA the device wasn’t strong enough and the device broke upon testing. This is why we decided to try PETG which was too brittle. <\/li>\n\n\n\n
                    • \u2705Decided to print final product with PLA+ which was a stronger and had a higher tensile strength therefore not snapping under load. <\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n\n\n

                      Design Considerations<\/strong><\/h3>\n\n\n\n
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                      Accessibility and comfort<\/strong><\/p>\n\n\n\n

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                      1. Thumb hooks and easy-to-use Velcro straps to accommodate users with limited hand mobility and dexterity.<\/li>\n\n\n\n
                      2. Soft-sided waterproof Velcro straps and beveled edges to reduce skin irritation and potential injuries.<\/li>\n<\/ol>\n<\/div>\n\n\n\n
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                        Streamlined Shape and General design.<\/strong><\/p>\n\n\n\n

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                        1. Streamlining: Includes holes and aerodynamic shapes in the design to minimize hydrodynamic drag and enhance swimming performance.<\/li>\n\n\n\n
                        2. Neutrally buoyant: Adjusted the infill percentage to make the brace neutrally buoyant, preventing additional drag or difficulty for the user.<\/li>\n<\/ol>\n<\/div>\n\n\n\n
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                          Compliance and Cost effectiveness<\/strong><\/p>\n\n\n\n

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                          1. Designed the brace to adhere to Ironman guidelines, avoiding flotation devices and limiting the number of anchoring points.<\/li>\n\n\n\n
                          2. Utilized 3D printing for a low-cost production process, with the possibility of further reducing costs through mass production and alternative manufacturing methods.<\/li>\n<\/ol>\n\n\n\n

                            <\/p>\n<\/div>\n<\/div>\n\n\n\n

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                            Sewed over velcro created a sort of thumb hook for individuals with dexterity issues to use to easily wrap the straps around their legs.<\/figcaption><\/figure>\n<\/div>\n\n\n\n
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                            The holes and streamlined shape helps to reduce any drag caused by the device and allow water to still pass through<\/figcaption><\/figure>\n<\/div>\n\n\n\n
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                            All components of the device are printed on a 3D printer our of PLA+<\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n

                            Final Design<\/strong><\/h2>\n\n\n\n
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                            As one of the top teams we were blessed with the opportunity to present our solution to during the iBioMed showcase <\/figcaption><\/figure>\n<\/div>\n\n\n\n
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                            Final Prototype <\/strong><\/h3>\n\n\n\n