PROBLEM TO BE SOLVED: To provide a testing body capable of efficiently evaluating joining strength of a composite compound made of a resin and a metal.;SOLUTION: A testing body (1) is constituted of: a metal member (3) made of a metal, a first resin member (2) made of a first resin, and a second resin member (4) made of a second resin. The first resin member (2) and the metal member (3) are joined to each other in a first joining surface (7), and the second resin member (4) and the metal member (3) are joined to each other in a second joining surface (8), respectively. The shapes of the first and second joining surfaces (7, 8) are identical to each other. When predetermined two places of the test body (1) are gripped and given a tensile force, the force acting in the first and second joining surfaces (7, 8) is made dynamically and practically equivalent to each other. A joining strength in the first and second joining surfaces (7, 8) can be compared with each other by the test body (1).;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2017,JPO&INPIT
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