| 摘要 |
A break resistant ball bat 10 provides an elongated body 20 that generally provides handle and barrel portions 22, 24, with a transition area 26 between them. Upon impact with a ball, vibration having an outer node 30 and an inner node 32 results. The vibration is particularly hazardous for a critical stress area 34, which contains the majority of locations within the bat statistically most likely to break. The critical stress area is roughly coextensive with the handle and a portion of the transition area adjacent to the handle. A fiber sleeve 40 encloses and protects the critical stress area. The fiber sleeve provides a layer of fibers or filaments 42 oriented generally parallel to the length of the bat. The resistance of these filaments to elongation tends to reduce the deflection of the critical stress area upon impact. A matrix 50 of epoxy or resin covers and encloses the filaments. The narrow diameter of individual filaments and their consequently large collective surface area results in a strong bond between the filaments and the matrix.
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