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研究了钢铝固液相复合板剪切撕裂表面的分形几何特征， 并且确定了分形维数与界面剪切强度之间的关系。研究结果表明： 剪切撕裂表面的分形维数与界面剪切强度之间满足ｙ ＝ ２６ ．２ ｘ ＋ ４ ．２ 。利用由直径为１ ．４ ～１ ．６ ｍ ｍ 的钢丝制成的钢丝轮对０８Ａｌ 钢板表面进行打毛处理， 可以得到最佳的钢板表面粗糙状态， 使得复合板界面剪切撕裂表面的分形维数最大约为２ ．３３ ， 从而得到复合板的最大剪切强度为６５ ．３ ＭＰａ 。
The fractal geometry of shearing and tearing surfaces of steel-aluminum solid-liquid composite plates was studied and the relationship between the fractal dimension and interfacial shear strength was also determined. The results show that the fractal dimension of shear tearing surface meets the interfacial shear strength. 2 x + 4. 2. Utilized by a diameter of 1. 4 ~ 1. 6m m steel wire wheel on the 08Al steel surface roughening treatment, you can get the best steel surface roughness state, making the composite interface plate shear tear surface fractal dimension of up to about 2. 33, resulting in the composite board maximum shear strength of 65. 3 MPa.