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Profile self-adaptive alignment ultrasonic thickness measuring device and profile self-adaptive alignment ultrasonic thickness measuring method

An adaptive, ultrasonic measurement technology, applied in the direction of measuring devices, using ultrasonic/sonic/infrasonic waves, instruments, etc., can solve complex problems, achieve reasonable structure, convenient and accurate measurement, and improve the effect of thickness measurement accuracy

Active Publication Date: 2021-02-09
SHANGHAI JIAO TONG UNIV
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  • Profile self-adaptive alignment ultrasonic thickness measuring device and profile self-adaptive alignment ultrasonic thickness measuring method
  • Profile self-adaptive alignment ultrasonic thickness measuring device and profile self-adaptive alignment ultrasonic thickness measuring method
  • Profile self-adaptive alignment ultrasonic thickness measuring device and profile self-adaptive alignment ultrasonic thickness measuring method

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[0028] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0029] figure 1 It shows a shape-surface adaptive alignment ultrasonic thickness measuring device of the present invention, which includes a base, a translation device, a rotation device, and an ultrasonic measuring head. The ultrasonic measuring head adopts a water jet probe. The base is used to fix the entire ultrasonic thickness measuring device and determine the base coordinate system of the measuring platform. The translation device includes two translation axes whose motion directions are perpend...

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Abstract

The invention provides a profile self-adaptive alignment ultrasonic thickness measuring device and a profile self-adaptive alignment ultrasonic thickness measuring method. The profile self-adaptive alignment ultrasonic thickness measuring device comprises a base, a translation device, a rotating device and an ultrasonic measuring head. The base is used for fixing the whole ultrasonic thickness measuring device and determining a base coordinate system of the measuring platform; the translation device is arranged on the base, a rotating device is arranged on the translation device, and the rotating device can translate to any position in a plane parallel to the base on the translation device; the ultrasonic measuring head is installed at the tail end of the rotating device, and a plurality of water immersion ultrasonic probes are installed in the ultrasonic measuring head. According to the method, the surface normal vector of the measured area under the base coordinate system can be calculated. Based on the normal vector and the coordinate of the central measuring point, the translation device movement distance and the rotation angle of the rotation device required when the axis of the central measuring head is perpendicular to the measured surface can be calculated through common kinematics transformation. By controlling the movement and rotation of each shaft, the ultrasonic measuring head is aligned with the normal vector of the curved surface, thereby ensuring the accuracy of ultrasonic thickness measurement.

Description

technical field [0001] The invention relates to the field of ultrasonic non-destructive measurement, in particular to a shape-surface adaptive alignment ultrasonic thickness measuring device and an adaptive alignment ultrasonic thickness measurement method. Background technique [0002] As the industry develops faster and faster, the status of measuring equipment in the field of precision machining is gradually highlighted. Ultrasonic testing has attracted more and more attention from researchers due to its unique capabilities in thickness measurement and flaw detection. In the measurement process based on ultrasound, the ultrasonic sound beam is required to be perpendicular to the surface to be measured. The existing ultrasonic measurement mainly relies on manual adjustment to ensure the attitude of the measuring device. The measurement efficiency is low, and the measurement results are easily affected by the attitude of the measuring device. Especially for the measurement ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B17/02
CPCG01B17/02Y02E30/30
Inventor 郭鹏朱江张杨朱利民张龙
Owner SHANGHAI JIAO TONG UNIV
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