Xinyu Zhao

TL;DR: In this article, an ultrasonic guided wave detection device for quality evaluation of a composite laminated plate is presented, where the detection means is achieved by the following steps: (a) performing time-frequency analysis on guided wave signals of the composite laminated plate, comparing a timefrequency distribution diagram of the signals with a theoretical time-fraction distribution curve of the guided wave, and providing a mode separation method; (b) obtaining accurate time delay information in a time frequency domain based on good characteristics of a Gabor wavelet, combining optimal sensor placement and multi-

TL;DR: In this paper, a multi-probe detection mode is adopted to accurately and conveniently perform two-dimensional positioning on interfacial defects of the composite laminated plate, and the method comprises the following steps: (a) arranging four sensors in a square at a certain spacing on the surface of the plate, taking each sensor in the square arrangement as an excitation sensor sequentially and two sensors adjacent to the excitation sensors as receiver sensors, thus forming a multiplex defect positioning system; (b) performing cluster analysis on position information of a plurality of groups of the defects,

TL;DR: In this article, a single-manipulator automatic ultrasonic non-destructive detection device is presented, which consists of an industrial control machine, a manipulator device, an ultrasonic transmitter-receiver set, a water coupling device and an auxiliary device.

TL;DR: In this paper, a linear ultrasonic phased array transducer for detecting steel materials is proposed, which consists of a piezoelectric chip, a matching layer, a back lining and electrode fabrication.

TL;DR: In this paper, a high-rigidity three-coordinate scanning frame was proposed for 3D scanning of the sound field of an ultrasonic phased array transducer. But the authors did not consider the effect of deformation and vibration of action mechanisms in a scanning process.