Tohoku University · 공학
Toshiaki Nishi 교수의 연구실은 주로 신발 밑창 소재의 마찰성 및 접착성 거동에 중점을 두고 있으며, 특히 습기나 기름기 있는 표면에서의 미끄럼 방지 성능 향상을 위한 재료 설계를 핵심 과제로 삼고 있습니다. 수분, 유성 유체, 표면 거칠기 등 다양한 조건에서의 접촉 거동과 실접촉 면적, 유막 두께의 분포를 정량적으로 분석하는 데에 초점을 맞추고 있으며, 실험적 측정 기법(예: DICM, 전반사법)을 통해 물리적 메커니즘을 규명합니다. 또한 스포츠웨어와 피부 간의 착용감 및 땀에 의한 점착성 문제에 대해서도 물리적 매개변수와 감각 평가의 상관관계를 연구하고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
High slip-resistant footwear outsoles can reduce the risk of slip and fall on wet and icy surfaces. Falls on wet and icy surfaces can cause serious life-threatening injuries, especially for older adults. Here we show that footwear outsoles using the rubbers filled with activated carbon or sodium chloride produce higher friction force and reduce the slip rate in walking. We have identified that small depressions were formed on outsole materials filled with activated carbon or sodium chloride duri
In the material designing process of footwear outer-soles, a grip property of rubber is of crucial importance under water or oil lubricated condition. In general, contact states between rubber and floors under lubricated conditions are influenced by various factors, i. e. viscosity of a lubricant, sliding velocity, normal force, surface roughness and wettability between the two substrates. It has been said that lubrication conditions can be distinguished based on Stribeck curves, which are descr
In the material designing process of footwear outer-soles, the rubber grip property under lubricated conditions is important. Generally, friction behaviors of rubber under such conditions are influenced by contact states, which can be changed by various factors, i.e. viscosity, sliding velocity, normal force, surface roughness and wettability between two substrates. To discuss the influences of each parameter, the contact conditions are investigated. The purpose of this study is to establish a n
Sportswear is widely used in various sports and serves multiple functions. A key feature is the ability to absorb sweat during physical activity, which can, however, cause discomfort due to stickiness. This study focuses specifically on the stickiness caused by sweat between sportswear and the skin by objectively evaluating stickiness using specific physical parameters and correlating them with sensory evaluation values. Moreover, there is little research on the adhesion force between sportswear
In wet paper wiper, three-dimensional nonuniform wetting may occur and affect frictional behavior. This study aims to clarify the frictional behavior of wet paper wiper in order to develop guidelines for controlling the frictional behavior of similar products such as clothing and sponges. Friction tests were conducted between a paper wiper and a flat glass while varying the water content of the paper wiper. The friction coefficient reached a maximum at a certain water content depending on the no
