PUNCTURE STRENGTH MEASURING APPARATUS

摘要

PROBLEM TO BE SOLVED: To measure puncture strength of a material having a minute diameter with respect to a film, under various conditions.SOLUTION: A puncture strength measuring apparatus for a film material to be used for a fuel cell comprises: a puncture instrument having a tip to puncture the film material, the tip having a diameter of 10[μm] or smaller; a moving device for moving the puncture instrument at a speed of 50[μm/s] or lower; a film material holding jig having two flat plates for holding the film material and including holes formed to face each other to allow the tip to penetrate; a load measuring part having the film material holding jig mounted thereon and measuring a puncture load when the tip punctures the film material; and a control part. The control part calculates a stroke for the puncture on the basis of the time from the start of load variation up to a maximum load value and a moving speed of the puncture instrument in the time.