FIELD: nondestructive testing of materials of articles by signals of acoustic emission, quality inspection and diagnostics of technical state if tested object. SUBSTANCE: invention is intended for design of flaw detector allowing type of defect and stages of its development to be determined by spectral components of acoustic emission with increase of signal-to-noise ratio. Flaw detector isolates maximum of spectral density of analyzed signal and determines type of defect, namely, plastic deformation, microcrack or development of microcrack with formation of through crack by frequency corresponding to this maximum in agreement with dependence found in advance. Apart from this sensitivity of test increases thanks to suppression of signals with frequencies not carrying information on defect, that is noises. EFFECT: increased authenticity of flaw detector. 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DEVICE FOR EARLY DIAGNOSIS OF THE FORMATION AND DEVELOPMENT OF MICROCRACKS IN MACHINE PARTS AND STRUCTURES | 2022 |
|
RU2788311C1 |
| ACOUSTIC-EMISSION METHOD OF DIAGNOSING BEARING RINGS OF AXLE UNIT OF RAILWAY VEHICLE AND DEVICE FOR REALISING SAID METHOD | 2008 |
|
RU2391656C2 |
| ULTRASONIC FLAW DETECTOR | 0 |
|
SU659948A1 |
| MULTI-CHANNEL ACOUSTIC-EMISSION SYSTEM OF CONSTRUCTION DIAGNOSTICS | 2017 |
|
RU2664795C1 |
| METHOD AND DEVICE OF WELDED JOINTS TESTING BY ACOUSTIC EMISSION DURING WELDING | 2009 |
|
RU2442155C2 |
| METHOD OF ACOUSTIC EMISSION QUALITY CONTROL OF GIRTH WELD DURING MULTIPASS WELDING AND DEVICE FOR ITS IMPLEMENTATION | 2014 |
|
RU2572067C1 |
| METHOD AND DEVICE FOR INVESTIGATING METAL STRUCTURES | 2001 |
|
RU2240551C2 |
| MULTICHANNEL ACOUSTIC EMISSION DEVICE | 2019 |
|
RU2726278C1 |
| METHOD OF ACOUSTIC EMISSION MONITORING OF METAL OBJECTS AND DEVICE FOR ITS IMPLEMENTATION | 2020 |
|
RU2736175C1 |
| METHOD FOR DIAGNOSING OF RAIL LENGTHS OF METAL BRIDGE AND APPARATUS FOR EFFECTUATING THE SAME | 2005 |
|
RU2284519C1 |
