Determination method and test verification of"non-standard breaking tensile strength"for newly added wire rope types in ISO 10425
The Non-standard breaking tensile force of new type of compacted strand wire rope in ISO 10425 is illustrated with examples.According to the requirement of 32.00 mm IPS steel wire rope put forward by customers,the breaking tensile force of 31.80 mm and 34.90 mm steel wire rope was found out from ISO 10425 standard,and the breaking tensile force of 32.00 mm was calculated by interpolation formula.The average and standard deviation of 20 samples were obtained from the production site,and the standard data and the data obtained from the production site were tested jointly according to the one-sided hypothesis test method,the results show that:when using ISO 10425,the Non-standard breaking tensile force can be calculated by the interpolation formula for the wire rope without definite strength concept in the standard.The consistency between practical data and calculated data can be verified by one-sided hypothesis test.
ISO 10425wire ropenon-standard breaking tensioninterpolation formulaone-side hypothesis testing
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