Magnetic-type ultrasonic oblique incidence sensor transmitter-receiver device

Abstract

The invention relates to a magnetic-type ultrasonic oblique incidence sensor transmitter-receiver device. According to the device, an ultrasonic oblique incidence structure in which an ultrasonic transducer and organic glass is coupled can be achieved without dismounting the ultrasonic transducer. Magnetic force provided by a magnetic base of the device is several times that of a normal magnetic base, thereby ensuring that the contact between the device and a part to be tested is close, the coupling is excellent, and the operation is easy and convenient. The device comprises a certain quantity of fixing plates and is reasonable in structural design, and thus the rigidity of the device can be fully ensured. When being applied to stress detection system based on an acoustic elasticity theory, the structure provided by the invention can fully ensure the measurement precision of ultrasonic time.

Description

1. Technical field [0001] The invention designs a magnetic suction type ultrasonic oblique incidence sensor transceiver device, which is suitable for generating surface waves or longitudinal waves to realize stress detection when ultrasonic oblique incidence. 2. Background technology [0002] The detection of surface residual stress has received more and more attention. At this stage, many scientific research institutions use ultrasonic critical refraction longitudinal waves and surface waves to detect surface residual stress. Although the theory of ultrasonic stress detection is very mature, due to the complexity of the field test environment, The position of the measured workpiece space is inconsistent, so it is difficult to place the sensor. It is often necessary to hold it by hand or add additional fixtures, which makes the structure complex, bulky, and poor in aesthetics. [0003] When designing the structure of ultrasonic oblique incidence sensors at home and abroad, t...

AI Technical Summary

Problems solved by technology

[0002] The detection of surface residual stress has received more and more attention. At this stage, many scientific research institutions use ultrasonic critical refraction longitudinal waves and surface waves to detect surface residual stress. Although the theory of ultrasonic stress detection is very mature, due to the complexity of the field test environment, The position of the measured workpiece space is inconsistent, so it is difficult to place the sensor, and it is often necessary to hold it by hand or add additional fixtures, making the structure complex, bulky, and poor in aesthetics

[0003] When designing the structure of ultrasonic oblique incidence sensors at home and abroad, the ultrasonic transducer is usually fixed in the plexiglass wedge through threads or special fixtures, but this structure must be replaced every time when the transducer is coupled with the wedge. Take out the energy device, apply the couplant evenly and install it again

At present, the more effective ultrasonic stress detection theory is the acoustoelastic formula. When using this structure for stress detection, it is impossible to ensure that the couplant applied between the wedge and the sensor is uniform each time, and it is also impossible to ensure the gap between the sensor and the wedge. The contact tightness is consistent, and it is greatly affected by human factors. When this structure is tested on site, it takes a long time to operate

Images