FIELD: physics.
SUBSTANCE: two acoustic emission transducers are placed on an inspected article at a certain distance from each other; the article is loaded; acoustic emission signals generated by a defect on the article are received; Lamb wave modes are recorded in form of a wave packet, after presentation of which a frequency-time curve on spectrograms is used to select energy maxima of antisymmetric and symmetric modes; the difference in time of arrival of energy maxima at selected frequencies is used to determine distance between the transducer and the acoustic emission source, after which the obtained results are used to calculate coordinates of the defect on the article.
EFFECT: high accuracy of locating an acoustic emission source.
6 dwg
Title | Year | Author | Number |
---|---|---|---|
METHOD OF LOCATING DEFECTS | 2013 |
|
RU2523077C1 |
METHOD OF DETERMINING DISTANCE BETWEEN CONVERTER AND SOURCE OF ACOUSTIC EMISSION | 2007 |
|
RU2397490C2 |
METHOD OF LOCATING DEFECTS DURING ACOUSTIC-EMISSION CONTROL | 2015 |
|
RU2586087C1 |
METHOD OF DETERMINATION OF COORDINATES OF ACOUSTIC EMISSION SOURCES | 0 |
|
SU1730573A1 |
METHOD FOR DETECTION OF LOCAL CORROSION DEPTH AND TRACKING OF ITS DEVELOPMENT | 2007 |
|
RU2379675C2 |
METHOD OF DETERMINATION OF ACOUSTIC EMISSION SOURCE COORDINATES IN SHEET MATERIALS | 0 |
|
SU1145251A1 |
METHOD TO MONITOR DYNAMICS OF VARIATION OF CONTROLLED OBJECT WALL THICKNESS | 2013 |
|
RU2540942C1 |
METHOD FOR DETECTING AND LOCALIZING DAMAGE IN THIN-WALLED STRUCTURES USING LAMB WAVES | 2021 |
|
RU2757056C1 |
METHOD OF INCREASING ACCURACY OF LOCATING NOISE-LIKE SOURCES OF ACOUSTIC EMISSION BASED ON SPECTRAL-TIME SELF-SIMILARITY | 2012 |
|
RU2515423C1 |
METHOD OF DETERMINING COORDINATES OF ACOUSTIC EMISSION SIGNAL SOURCE AND DEVICE TO THIS END | 2007 |
|
RU2356043C2 |
Authors
Dates
2013-11-10—Published
2011-12-30—Filed