| 摘要 |
PROBLEM TO BE SOLVED: To provide a strength evaluating method which can correctly evaluate the strength of a metal frame by a frame model which can be easily and inexpensively manufactured in evaluating the strength of the symmetric metal frame using the frame model. SOLUTION: The method for evaluating the strength of the symmetric first metal frame 20, and the strength of the symmetric second metal frame 30 in which the configuration of a left portion 36 and a right portion 37 is different from the configuration of a left portion 26 and a right portion 27 of the first frame using the single frame model 40, comprises steps 1-3 of the manufacturing process for trial manufacture of the frame model 40 in which a left portion 46 thereof is of a structure corresponding to the left portion 26 and the right portion 27 of the first frame 20, and a right portion 47 thereof is of a structure corresponding to the left portion 36 and the right portion 37 of the second frame 30, steps 4-6 of the testing process for measurement of the strength of the left portion 46 and the right portion 47 of the frame model 40, and a step 7 of the evaluation process to respectively evaluate the strength of the left portion 46 and the right portion 47 of the frame model 40.
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