TIRE DURABILITY TEST METHOD

PROBLEM TO BE SOLVED: To provide a method capable of efficiently testing durability to PTL (ply turn up loose).SOLUTION: A disclosed method is the method for testing durability with respect to separation of a cord from rubber at an end 30 at a turn-up portion 28 of a carcass ply 24. The method inclu...

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Bibliographische Detailangaben
Hauptverfasser:	HARADA YUKI, NAKAGAWA TSUNEYUKI, OKABE TARO, SARASHI HIROTAKA, YAMAZAKI KAZUMI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	DEVICES OR ARRANGEMENTS RELATED TO TYRES MEASURING PERFORMING OPERATIONS PHYSICS REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL TESTING TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR TRANSPORTING TYRE CHANGING OR REPAIRING TYRE INFLATION VEHICLE TYRES VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method capable of efficiently testing durability to PTL (ply turn up loose).SOLUTION: A disclosed method is the method for testing durability with respect to separation of a cord from rubber at an end 30 at a turn-up portion 28 of a carcass ply 24. The method includes: a first heating step in which a tire 2 which is mounted on a rim 32 and filled with gas is heated; a second heating step in which the tire 2 is solely heated; and a running step in which the tire 2 is driven to run on a running test machine 36. A heating temperature T1 of the tire 2 in the first heating step is preferably 50-130°C. A heating temperature T2 of the tire 2 in the second heating step is preferably 50-130°C.SELECTED DRAWING: Figure 2 【課題】ＰＴＬに対する耐久性が効率よく試験できる方法の提供。【解決手段】本発明は、カーカスプライ２４の折返し部２８の端３０でのコードのゴムからの剥離に対する耐久性の試験方法に関する。この方法は、リム３２に装着され気体が充填されたタイヤ２を加熱する第一加熱工程、上記タイヤ２単体を加熱する第二加熱工程及び走行試験機３６において上記タイヤ２を走行させる走行工程を有する。好ましくは、上記第一加熱工程における上記タイヤ２の加熱温度Ｔ１は、５０℃以上１３０℃以下である。好ましくは、上記第二加熱工程における上記タイヤ２の加熱温度Ｔ２は、５０℃以上１３０℃以下である。【選択図】図２