The invention discloses an ultrasonic phased array weld defect detection method based on oblique incidence An ultrasonic phased array detection system is included, and ultrasonic phased array detection steps are included, wherein the ultrasonic phased array detection system comprises a signal collecting system, a transducer probe, an organic glass wedge block, an aqueous solution connecting the organic glass wedge block with the test block surface, a coupling agent connecting the transducer probe with the organic glass wedge block and a computer used for calculating data of the signal collecting system Accordingly, the defects can be well detected, a non-detection zone is reduced, the detection robustness and resolution are improved, the imaging quality of a far-field region can be obviously improved, and the imaging resolution and defect detection rate are increased

Ultrasonic phased array weld defect detection method based on oblique incidence

The invention discloses an ultrasonic detection scanning imaging device for an inside coating interface defect of a cylindrical shell and an application method thereof. Two step motors are used for driving a cylindrical shell part to be rotated and driving a ultrasonic transducer to be translated, so the complete imaging of the interface adhesion situation of the inside coating is realized. In the scanning process, the vibration is added to the cylindrical shell part by a low frequency pump wave, the purpose of the added vibration is to open and close tiny cracks of the coating interface continuously, and the nonlinear effect is generated; in addition, the high frequency ultrasonic transducer continuously transmits/receives an ultrasonic signal, the received ultrasonic wave generates the nonlinear ultrasonic phenomenon under the effect of the low frequency pump wave, and the shape and position of the tiny defect of the coating interface are detected by extracting the nonlinear ultrasonic characteristic parameters. The device has the advantages of rapid detection speed, accurate test data, simple device operation and strong practicability, and has the extensive application prospect.

Ultrasonic detection scanning imaging device for inside coating interface defect of cylindrical shell and application method thereof

The invention provides an ultrasonic phased array detection system and method based on raw data. After an ultrasonic echo signal from a to-be-measured object is received, analog-to-digital conversionprocessing and beam synthesis processing are carried out on the ultrasonic echo signal directly and then raw data information is generated; and imaging processing is carried out directly on the raw data information and the raw data information is stored directly for application to source data for subsequent analysis and calculation. According to the invention, since no downsampling processing is carried out in the process of processing the ultrasonic echo signal from the to-be-measured object, the original ultrasonic echo signal data are kept directly and thus imaging and storage are carried out, so that the resolution and definition of the obtained image by the ultrasonic imaging can be improved to the greatest extent and thus the accuracy of ultrasound phased array detection is enhanced.

Ultrasonic phased array detection system and method based on raw data

Disclosed are a nature determination system and nature determination method for an ultrasonically detected defect, the system and method being implemented on the basis of an ultrasonic phased array P-scanning imaging apparatus. By means of the ultrasonic phased array P-scanning imaging apparatus, a traditional ultrasonic detection equivalent method can be implemented, and a structural defect, such as a welding joint defect of an object, can be qualitatively evaluated by means of a P-scanning imaging technique. For example, for a welding joint defect of an object, the nature of the defect can be determined by means of the P-scanning imaging technique according to morphology features of the defect accompanied by a welding groove structure, a welding method, a defect position, etc., such that the morphology of the defect of the object is reconstructed and reproduced so as to achieve a corresponding aim, ultrasonic nature determination detection.

Nature determination system and nature determination method for ultrasonically detected defect

The invention discloses a phased array sound wave advanced prediction system and method suitable for drilling-blasting tunnels The system includes sound wave transduction devices and a host system, and the sound wave transduction devices transmit and receive sound waves; a data temporary storage module stores sound wave reflection signal data and focused sound wave reflection signal data obtainedby three-dimensional detection; three-dimensional coordinates of the sound wave transduction devices are imported into an acquisition module, and the acquisition module calculates and controls the emission time and the excitation sequence of each sound wave transduction device according to the three-dimensional coordinates, so that delayed transmitting is achieved to form focused sound waves; a control module is used for temporarily storing the acquired data into a data temporary storage module and transmitting the data to a data processing imaging module; and the data processing imaging module applies a deep learning algorithm for automatic identification and judging of the boundary of the geological anomalous body, conducts processing, analysis and integration on the information to forma three-dimensional detection imaging result, and finally a high-resolution three-dimensional detection image in front of a tunnel face can be obtained

Phased array sound wave advanced prediction system and method suitable for drilling-blasting tunnels

The invention provides an ultrasonic defect detection qualitative system and qualitative method that are implemented based on an ultrasonic phased array P-scan imaging device. With the ultrasonic phased array P-scan imaging device, the traditional ultrasonic detection equivalent method can be implemented and the structural defect like an object solder joint defect can be evaluated qualitatively byusing the P scanning imaging technique. For example, for an object solder joint defect, the defect property can be determined by using the P-scan imaging technique based on the morphology features ofthe defect as well as the weld joint groove structure, welding method, and defect position; and thus the morphology of the object defect is reconstructed to achieve a corresponding ultrasonic qualitative detection objective.

Ultrasonic defect detection qualitative system and qualitative method

The invention provides a scan detection method and device for sector scan imaging of an ultrasonic phased array. The method comprises steps as follows: step one, coordinate transformation: polar coordinate data of multiple sampling points in a scan region is subjected to coordinate transformation, and rectangular coordinate data of each sampling point of a corresponding pixel point on an imaging coordinate system is obtained and stored; step two, interpolation on scan lines after coordinate transformation: four echo signal sampling points closest to a to-be-interpolated point are found by judging the linear position relation between the to-be-interpolated point and the sampling points around the to-be-interpolated point, and interpolation is performed based on weight according to the distance relation between the to-be-interpolated point and the four echo signal sampling points; step three, storage of an interpolation result. The invention also provides the scan detection device for sector scan imaging of the ultrasonic phased array and a use method of the device.

Scan detection method and device for sector scan imaging of ultrasonic phased array

The invention provides a reflector morphological extraction system based on sound field characteristics and an extraction method thereof. An ultrasonic wave is projected to a reflector; ultrasonic echoes that are formed by reflecting the ultrasonic wave by the reflector at different receiving angles and different depths are reflected; and targeted signal processing is carried out the ultrasonic echoes to extract morphological features of the reflector and calculate corresponding morphological feature parameters. To be specific, in the targeted signal processing on the ultrasonic echoes, an image defect amplification phenomenon caused by the acoustic beam at the corresponding position is reduced adaptively according to different positions of image defects; and structural defects at different positions on the object surface can be optimized to obtain defect profile parameters and defect trend parameters corresponding to the structural defects.

Ma Dianzhong

Papers

Ultrasonic phased array detection system and method based on raw data

Ultrasonic defect detection qualitative system and qualitative method

Scan detection method and device for sector scan imaging of ultrasonic phased array

Reflector morphological extraction system based on sound field characteristics and extraction method thereof

Nature determination system and nature determination method for ultrasonically detected defect