| 摘要 |
FIELD: testing technology.SUBSTANCE: determining the current service life of the pipelines, cutting samples for carrying out cyclic tests, fatigue tests of the samples, measurement of hardness of metal surface is carried out. The samples for testing are cut from the material not previously used, similar to the material of the pipeline under study. The measurement of hardness is carried out at least 100 times on each sample. The dispersion of hardness readings is calculated and the remaining operating life of the metal of pipeline is determined from the ratio.EFFECT: increased reliability and simplification of the method implementation.4 cl |
