ULTRASONIC INSPECTION OF METAL STRUCTURES USING PHASED ELECTROMAGNETIC-ACOUSTIC ANTENNA ARRAY
Annotation
The task of pipeline diagnosing with the use of a phased antenna array (FAA) on an electromag-netic-acoustic converter (EMAC) is considered. A new algorithm for phased EMAC arrays is proposed; the algorithm provides improved accuracy characteristics and a faster scanning of a test object than the classical diagnostic method with FAA. The efficiency and performance of the developed scanning algorithm is studied experimentally with the help of the EMAC-FAA prototype and a test sample. Comparison of the new algorithm with the classical one on the base of the experimental results demonstrates that the proposed scanning solution allows to reduce the effect of crosstalk significantly and to increase the signal-to-noise ratio in the distributions of the echo signal amplitudes.
Keywords
Постоянный URL
Articles in current issue
- SIMULATION MODEL OF PRIORITY RESERVED SERVICE OF NON-UNIFORM REQUEST TRAFFIC IN MULTICHANNEL SYSTEMS
- ORGANIZATION OF CONTROL OF COMBINATIONAL CIRCUITS BASED ON THE METHOD OF LOGICAL COMPLEMENT TO EQUILIBRIUM 1-OUT-OF-4 CODE
- INCREASE IN DYNAMIC ACCURACY OF DIGITAL TRACKING SYSTEMS OF APCS BY COMBINED MANAGEMENT METHOD. PART II. THE HIGH RATE OF MISMATCH CALCULATION
- ADAPTIVE ALGORITHM OF INFORMATION CODING IN AUTONOMOUS SYSTEM
- FEATURES OF USING MULTILEVEL INVERTERS IN PRECISION SERVO SYSTEMS
- ANALYSIS OF PARAMETERS OF ELECTRIC DEVICES WITH LEVITATION ELEMENTS
- OPTIMIZATION OF THE ACTIVE-IMPULSE METHOD OF OBSERVATIONS USING THE CCD RECEIVER AT LOW ILLUMINATION
- GRAPHIC COMPOSING OF OPTICAL SYSTEMS
- TITANIUM SURFACE ABLATION BY DOUBLE NANOSECOND PULSES
- APPLICATION OF VIRTUAL INFRASTRUCTURE COMPONENTS IN CONSTRUCTION OF A LABORATORY COMPLEX IN AN EDUCATIONAL INSTITUTION