| 摘要 |
FIELD: physics.SUBSTANCE: ultrasonic vibrations in a defined frequency range are excited and detected in a sample or article and quality is determined from the obtained response spectrum, wherein the diagnostic feature is the statistical criterion of deviation of the experimental response spectrum from the spectrum calculated by solving the inverse problem of resonant ultrasound spectroscopy by variation of modulus of elasticity values on the assumption of homogeneity and isotropy of the material, or a known crystalline structure, or allowable anisotropy.EFFECT: high accuracy and reliability of detecting defects and non-uniformities in an article by resonant ultrasound spectroscopy.2 cl, 1 tbl, 2 dwg |
