Master Degree / Yüksek Lisans Tezleri
Permanent URI for this collectionhttps://hdl.handle.net/11147/3008
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Master Thesis A Smart Mass Customization Design Tool: A Case Study of a Portable Ramp for Wheelchair Users(Izmir Institute of Technology, 2019) Doğan Kumtepe, Elvan; Başoğlu, Ahmet NuriThis study focuses on exploration of wheelchair users’ expectations from portable ramps and their adoption factors, then correspondingly ofters a smart mass customization design tool. Briefly, portable ramps are generally used by wheelchair users, provide temporary solution to increase accessibility in their daily lives. Different types of portable ramps can be found in the market and their modifcation flexibility cannot go beyond just length modification, or they just allow to select some restricted width options. However, portable ramps are quite suitable for mass customization concept which can help to satisfy potential customer while being involved in design step. In this context, three research methods were applied; semi structured face-to-face interview, observation and experimental study. The constructs of survey were extracted from literature and patent reviews, then refined during interviews and observations studies. Wheelchair users answered a web-based survey with 72 quentions related with 35 constructs. The survey uncovered that personalization, flexibility and extension capability is highly demanded by wheelchair users. At the end of the study, a smart mass customization design tool has been developed which potential users or sales representatives are able to easily interact with to customize the portable namp. To this end, a case study is conducted with a rollable ramp which is designed and developed within the scope of 1512 - Entrepreneurship Multi-phase Programme (Teknogirişim Sermaye Desteği Programı) of The Scientific and Technological Research Council of Turkey. The methodology and its implementation are described elaborately and example of a parametric smart customization tool design are illustrated in this study.Master Thesis Design of a Deployable Structure To Be Used as Temporary Ramp(Izmir Institute of Technology, 2017) Doğan Kumtepe, Elvan; Kiper, GökhanPortable ramps, used generally by wheelchair users, offer temporary solution to increase accessibility and mobility. It is expected that these ramps should be compact and lightweight in terms of ease of handling and storage. Different types of portable ramps in the market, which can be used by wheelchair users, are generally made of aluminum and their compactness is convenient to be redesigned and developed in the matter of increasing compactness. In this context, the main objectives of the thesis are to determine the wheelchair users’ inclinations and design a product to achieve better compactness and lightness by comparison with similar products in the market. To this end, a case study addresses challenges of designing of a deployable structure to be used as temporary ramp. The design approach and its implementation are described briefly and example of parametric analyses are illustrated in this study. First, the geometrical design is performed considering several alternative forms. The link lengths are optimized for compact rolling. Then load bearing capacity of the assembly is analyzed analytically and also verified with finite-element analyses. Material selection is performed for the composite panels and the panel thickness is determined according to strength of materials calculations. Finally, prototypes are manufactured and tested according to standards. The final design is 15,1% more compact and has 20,25% less weight compared to the best rival product available in the market. Also the product was tested by some wheelchair users and their opinions about the product are asked. Positive feedbacks are taken.