Flaw detection device and flaw detection method
The dual-focus immersion probe with a concave surface design addresses the complexity and inefficiency of existing flaw detection methods, enabling effective deep flaw detection in large-diameter billets, reducing parts and time, and enhancing component durability.
JP7856466B2Active Publication Date: 2026-05-11HONDA MOTOR CO LTD
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Patent Information
- Application Number
- JP2022059067
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2021-03-31
- Filing Date
- 2022-03-31
- Publication Date
- 2026-05-11
- Estimated Expiration
- 2042-03-31
AI Technical Summary
Technical Problem
Existing flaw detection technologies for large-diameter billets require multiple probes, leading to increased parts and time, and existing dual-mode probes are complex and limited in wavelength range, making deep flaw detection difficult.
Method used
A dual-focus immersion probe with a concave surface design that focuses ultrasonic waves at two points, using transducers with frequencies of 10 MHz or higher, and a simple configuration to perform deep flaw detection.
Benefits of technology
Enables efficient detection of defects deep inside large-diameter billets, reducing the number of probes and inspection time, improving durability of components by selecting defect-free materials for harsh environments.
✦ Generated by Eureka AI based on patent content.
Abstract
To provide a liquid immersion probe capable of performing a flaw detection inspection deep inside an object to be inspected in flaw detection.SOLUTION: A liquid immersion probe (52) includes a front face plate 64 that has a circular shape in plan view and is formed so that a surface facing an object to be inspected is formed as, a concave surface 68 that curves to gradually recesses toward a center. Defining a curvature radius of each of a first virtual tangent M1 and a second virtual tangent M2 which are perpendicular to each other at the center of the concave surface 68 and curve along the concave surface 68 as a first curvature radius R1 and a second curvature radius R2 respectively, the first curvature radius R1 and the second curvature radius R2 are different from each other. When ultrasonic waves (70, 72) oscillate in the solvent (24), the ultrasonic waves are focused at two points.SELECTED DRAWING: Figure 2
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