英文摘要
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Purpose: This study aimed to find out the relationship between Characteristic Time (CT) and the thickness of clubface. And try to find out if the heat treatment effects upon the CT or not in the meanwhile. Methods: Five Model No. JPX 850 DR wooden drivers with the same weight and length of clubs; same weight, bulk and loft of club heads; same thickness and hitting areas of clubface, all were made from Ti-AI-4V metal material. First, one driver maintained the original condition. The other four drivers were changed by heat treatment with four kinds of temperatures. Then the thickness of club faces were descended six times from the original 3.4 mm to 2.4 mm-minus 0.2 mm each time. The pendulum tests were taken after every minus-five hitting points on each clubface, five hits at each hitting point, in order to get the CT average. Results: (1) The thickness of clubface do affects CT-the thinner of the clubface the higher of CT. (2) The better CT were located in the middle and middle above area of clubface while thickness of clubface was even. (3) Heat treatment had nothing to do with CT. Conclusion: The design of clubface should pay attention to the thickness of clubface and the rule that set by USGA and R & A, since the thinner of clubface the better CT. In order to reduce the amount of scrap club heads and save costs. And improve the fun and achievement of golf players.
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