PROBLEM TO BE SOLVED: To provide a method of accurately measuring a ground contact state of a tire on a wet road surface.SOLUTION: A tire ground contact state measuring method includes the steps of: making a tire contact with a ground contact surface via fluorescent liquid between a transparent plate having the ground contact surface with unevenness corresponding to an actual road surface provided on one surface and the tire; and radiating excitation light to the fluorescent liquid lying between the ground contact surface and the tire from an opposite side to the ground contact surface of the transparent plate, and measuring luminance distribution of fluorescence discharged from the fluorescent liquid. The fluorescent liquid contains hydrophilic fluorescent dye about which difference of peak wavelengths between an excitation spectrum and a fluorescent spectrum is 100 nm or more.SELECTED DRAWING: Figure 1
【課題】湿潤路面におけるタイヤの接地状態を精度よく測定する方法を提供する。【解決手段】実路面相当の凹凸を有する接地面を一方の面に設けた透明板とタイヤとの間に、蛍光液を介在させて、接地面にタイヤを接地させる工程と、透明板の接地面とは反対側から、接地面とタイヤとの間に介在する蛍光液に対して励起光を照射し、蛍光液から放出された蛍光の輝度分布を測定する工程とを有し、蛍光液が、励起スペクトルと蛍光スペクトルとのピーク波長の差が100nm以上である親水性蛍光色素を含有することを特徴とする、タイヤ接地状態測定方法とする。【選択図】図1
TIRE GROUND CONTACT STATE MEASURING METHOD
タイヤ接地状態測定方法
2018-05-31
Patent
Electronic Resource
Japanese
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