| 摘要 |
A composite material has plate 4 having holes and a bonded to a first member to form an intermediate layer, and a second member which is made of a material different from the first member 1 laminated onto the intermediate layer 2 while charging a portion of the second member 5 into the holes 3 of the intermediate layer 5 to form a composite material 6. The holes 3 of the plate 4 which forms the intermediate layer 2 have a shape in such that the charged second member exerts a resisting force against a tensile stress applied in a direction perpendicular to the surface of the first member 1, e.g., a shape having a first hole opened on the side of the second member and a second hole communicated with the first hole and having a space not overlapped with the first hole, or a shape that an opened area on the side of the second member is smaller than that on the side of the first member.
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