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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
Korean Society for Precision Engineering Journal of the Korean Society for Precision Engineering 한국정밀공학회지 Vol.25 No.3
발행연도
2008.3
수록면
165 - 175 (11page)

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초록· 키워드

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An ankle-foot orthosis(AFO) is a brace for persons with gait disabilities to support or replace the function of ankle joint. Ankle-foot orthoses(AFO's) are usually prescribed to alleviate the drop-foot by constraining the excessive plantar flexion. The shape and the strength of the AFO are often based on 'trial and error' due to a lack of knowledge of the stress distribution in the AFO. In this study, an improved stress-freezing method was proposed to measure the stress distribution characteristics in the AFO. As a result, a photoelastic material with low freezing temperature was developed to measure the stresses under a person's direct contact loading condition. The three-dimensional stress-frozen photoelastic models of AFO's for five stages of stance phase such as heel contact, foot flat, mid stance, heel off, and toe off were produced. The results of photoelastic analysis revealed that the stresses developed in the AFO were varied considerably from tensile to compressive or vice versa, during walking. At the posterior part of ankle joint in the AFO, the maximum compressive stress of 1.81㎫ was observed in the mid stance, and the maximum tensile stress of 0.74㎫ was observed during heel contact. The overall stress levels in the AFO's were low in the toe off phase, The results suggested that the posterior part of ankle joint might be the most fragile part in the AFO.

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ABSTRACT
1. 서론
2. 연구 방법
3. 실험 절차 및 방법
4. 실험 결과 및 고찰
5. 결론
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