Sensitivity compensation method of defects in defocusing area of ultrasonic focusing probe
A technology of sensitivity compensation and ultrasonic focusing, which is applied in the direction of material analysis, measuring devices, and instruments using sound waves/ultrasonic waves/infrasonic waves, which can solve problems such as misjudgment, low detection sensitivity, and uncertain depth of internal defects, etc. Avoid misjudgment, accurate evaluation, high precision and repeatable effect
Active Publication Date: 2016-06-15
UNIV OF SCI & TECH BEIJING
4 Cites 9 Cited by
AI-Extracted Technical Summary
Problems solved by technology
View more
Abstract
The invention provides a sensitivity compensation method of defects in the defocusing area of an ultrasonic focusing probe.The sensitivity compensation method is characterized in that sensitivity compensation curves are actually measured by manufacturing compensation samples, the ultrasonic echo data of the to-be-measured samples is acquired through an ultrasonic microscope, the X, Y and Z spatial coordinates of the defects are extracted, corresponding compensation curves are selected according to actual detecting conditions, and sensitivity compensation is completed according to the depths Hdefect of the defects and the positions Hfocus of focuses.The sensitivity compensation method has the advantages that the detecting sensitivity of the defects in the defocusing area of the focusing probe is achieved; compared with AVG curves of flat probes, the method is more suitable for the focusing probe, the sensitivity compensation of the defects of the defocusing area is achieved, high precision and repeatability are achieved, the method is significant to fast defect detection and defect size representation, and misjudgment of defect size is avoided; by the sensitivity compensation, the defect size and number in materials can be statistically analyzed, and the purity of metal materials can be evaluated accurately.
Application Domain
Material analysis using sonic/ultrasonic/infrasonic waves
Technology Topic
PhysicsMicroscope +4
Image
Examples
- Experimental program(1)
Example Embodiment
PUM


Description & Claims & Application Information
We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.
Similar technology patents
Continuous zoom lens with linear motor and self-locking function
ActiveCN110007422AHigh precision and repeatabilityless parts
Owner:DONGGUAN POMEAS PRECISION INSTR
Real-time monitoring device and method for hammer cracking of artificial diamond press machine and judgment method for hammer cracking
Owner:NANJING UNIV
Failure detecting method for relay in inverter
Owner:JIANGSU EVER SOLAR NEW ENERGY CO LTD
Pedestrian track plotting method, navigation method and device, handheld terminal and medium
Owner:ALIBABA GRP HLDG LTD
Classification and recommendation of technical efficacy words
- avoid misjudgment
- High precision and repeatability
On-line diagnosis and control method for knockings of internal-combustion engine
InactiveCN102735395Aavoid misjudgmentOvercome the Neglect of the Frequency Characteristics of the Pressure in the Cylinder
Owner:TIANJIN UNIV
Integrated dynamic weighing system for rectifying illegal driving and method
Owner:BEIJING WANJI TECH
Software system repair processing method and software system repair processing device
Owner:邯郸市永年区永沙玻璃制品有限公司
Short circuit determination method for electrode fused arc welding
Owner:DAIHEN CORP