| 摘要 |
PROBLEM TO BE SOLVED: To provide a vibration test method capable of evaluating accurate vibration durability, in conformity with practical transportation environments. SOLUTION: This vibration test method concerned in the present invention is provided with a first step of calculating accumulated fatigue generated in a transported object P under a transportation condition in practical transportation as a theoretical accumulated fatigue; a second step for arranging the transported object P on a vibration table 1 to vibrate the vibration table 1 for a prescribed time at a vibration acceleration in the transportation condition; a third step for measuring the vibration acceleration generated in the transported object P and for calculating the accumulated fatigue received by the transported object P within the prescribed time as the practical accumulated fatigue, based on the vibration acceleration; a fourth step for increasing the vibration acceleration of the vibration table 1 to vibrate the vibration table 1 for a prescribed time at the the vibration acceleration; a fifth step for measuring the vibration acceleration generated in the transported object P, and for calculating the practical accumulated fatigue received by the transported object P within the prescribed time, based on the vibration acceleration; and a sixth step for repeating the fourth and fifth steps, until the sum of the practical accumulated fatigues reaches to the theoretical accumulated fatigue. COPYRIGHT: (C)2005,JPO&NCIPI
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