Multifunctional portable ultrasonic measuring instrument based on PCI/PCIe and use method

Abstract

The invention provides a multifunctional portable ultrasonic measuring instrument based on PCI / PCIe and a using method, and belongs to the technical field of ultrasonic measuring systems. The ultrasonic measuring instrument is composed of an ultrasonic transmitting and receiving device, a high-speed digitizer, a multiplexer, a DSP data processing module, an ultrasonic sensor, an electromagnetic ultrasonic adapter, an industrial portable computer and the like, and has two ultrasonic transmitting and receiving functions including a multi-channel piezoelectric ultrasonic transmitting and receiving mode and a single-channel electromagnetic ultrasonic self-transmitting and self-receiving mode. The ultrasonic measuring instrument is compact in structure and good in portability, and the wall thickness of a part and the size and distribution of residual stress are rapidly obtained; the electromagnetic ultrasonic sensor can be excited, so that the problem of poor measurement precision caused by non-uniform coupling state of the traditional piezoelectric ultrasonic sensor is solved; the data processing module based on hardware realizes processing and calculation of high-throughput ultrasonic signals, and meets the requirement for rapid and accurate measurement of the wall thickness and residual stress of parts in a manufacturing site environment.

Description

technical field [0001] The invention belongs to the technical field of ultrasonic measurement systems, in particular to a PCI / PCIe-based multifunctional portable ultrasonic measuring instrument and a usage method. Background technique [0002] Key aerospace parts such as rocket nozzles, common bottom components, and grid panels have the characteristics of large size, low rigidity, and high processing accuracy requirements. Unevenly distributed residual stress. For this reason, it is very important to quickly obtain the thickness and residual stress distribution state of the part in situ to correct the machining accuracy of the part and evaluate the serviceability and service life of the part. At present, gauges or hand-held special ultrasonic thickness gauges are mainly used for part wall thickness measurement, laser pinhole stress gauges, X-ray stress gauges and ultrasonic stress gauges are used for stress distribution measurement, and special measuring instruments are use...

AI Technical Summary

Problems solved by technology

[0004] In 2012, Kiyoshi Matsumoto disclosed the "Ultrasonic Measurement Method and Ultrasonic Measurement System" in the invention patent CN201210017770.8. This method uses a pair of transmitting and receiving ultrasonic sensors distributed on the upper and lower sides of the material to be tested, and the ultrasonic waves are used between the two sensors. The thickness of the coating material can be obtained by the transmission between them; however, this method cannot measure the residual stress, and the measurement system is not portable

In 2009, Wang Zicheng and others disclosed a "portable multi-channel ultrasonic diffraction time-of-flight detection device" in the invention patent CN200920084133.6. The device consists of a multi-channel ultrasonic detector, a multi-channel signal transmission cable, a multi-channel scanner, and information Composed of encoders, etc., and based on the diffraction time difference method, the weld seam of 9-200mm wall thickness materials can be detected in partitions; however, the device does not have the function of measuring wall thickness and residual stress of parts

[0005] However, none of the above mentions a multifunctional portable ultrasonic measuring instrument based on PCI / PCIe (peripheral component interconnection standard / high-speed serial computer expansion bus standard) and its use method

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