Title:
タイヤ接地状態評価方法
Document Type and Number:
Japanese Patent JP7017899
Kind Code:
B2
Abstract:
To provide a method of evaluating a tire grounding condition with high accuracy from a correlation between a tire contact area and a friction coefficient during traveling on a wet road surface.SOLUTION: A tire ground condition evaluation method includes the steps of: measuring a load when a rubber test piece is pressed through a fluorescent liquid against a ground contact surface having irregularities equivalent to an actual road surface provided on one surface of a transparent plate and is moved linearly while sliding, and a friction coefficient between the ground contact surface and the rubber test piece; irradiating the fluorescent liquid interposed between the ground contact surface and the rubber test piece with excitation light from the opposite side of the transparent plate to the ground contact surface to measure the luminance distribution of the fluorescence emitted from the fluorescent liquid; obtaining a binarized image by using an arbitrary luminance as a threshold on the basis of the obtained luminance distribution to determine a contact area; and obtaining an increase or decrease in the contact area from a difference between two or more types of binarized images in which measurement parameters are different from each other.SELECTED DRAWING: Figure 2
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Inventors:
Nao Isayama
Application Number:
JP2017198661A
Publication Date:
February 09, 2022
Filing Date:
October 12, 2017
Export Citation:
Assignee:
TOYO TIRE Co., Ltd.
International Classes:
B60C19/00; G01N19/02; G01N21/64
Domestic Patent References:
| JP2017058244A | ||||
| JP2009085621A | ||||
| JP2012154858A | ||||
| JP2003240681A |
Foreign References:
| US20160061681 | ||||
| CN106525137A |
Other References:
江口正夫,光誘起蛍光法を用いたゴム平板-凹凸面間接触部の解析 -可視化と輝度ヒストグラム解析-,トライボロジスト,2013年,第58巻、第10号,763~772頁
Attorney, Agent or Firm:
Masato Tsutada
Tetsushi Nakamura
Katsuyuki Tomita
Yasuomi Arichika
Ryu Maezawa
Waterfowl Masahiro
Tetsushi Nakamura
Katsuyuki Tomita
Yasuomi Arichika
Ryu Maezawa
Waterfowl Masahiro
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