| 摘要 |
A contoured back surface of a golf club face is shown and described along with a method for its design. The preferred back surface comprises a surface with varying thicknesses such that regions of the face which experience an approximately similar load due to application of a certain force (e.g. at least one ball impact) have an approximately similar thickness to result in a golf club face in which the stress is approximately uniform upon application of a similar force. In a preferred embodiment regions experiencing the most internal load due to a given applied force are thickest, regions experiencing lower internal load due to the same applied force are thinner, and the regions experiencing the lowest magnitude of internal load due to the same applied force are thinnest (i.e. the thickness of a region corresponds to the expected or measured applied load of that region, so that the load produced stress levels are below the material allowable stress level). The thicknesses of the preferred contoured surface may be gradual from thickness to thickness or may be stepped. In a stepped surface embodiment cracking potential along step edges is reduced by incorporating additional material at those edges so the applied load is well tolerated.
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