Phased Array Ultrasonic Scanning for Aerospace Passageway Flaw Detection
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Solution Overview
Problem
Conventional non-destructive testing (NDT) techniques face challenges in detecting flaws associated with passageways, especially in aerospace components, as they often require disassembly and the use of mechanical fasteners, which increases complexity, cost, and reduces the ability to identify fatigue at early stages, and are not suitable for restricted access areas.
Innovation Solution
The method employs phased array ultrasonic scanning, which allows for the detection of flaws in passageways without disassembly by using a phased array probe that can electronically steer and focus ultrasonic beams, enabling in-situ testing of aerospace components with complex geometries and limited access, thereby increasing the probability of detecting anomalies and optimizing flaw characterization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional NDT techniques are used to detect flaws in passageways, then detection capability is improved, but disassembly and use of mechanical fasteners are required, increasing complexity and cost
Solution Approach 1:
The patent replaces mechanical access methods (disassembly and mechanical fasteners) with an acoustic field-based approach. Ultrasonic waves are used to probe the interior of passageways without requiring physical mechanical access, thereby eliminating the need for disassembly and mechanical fastening operations while maintaining flaw detection capability
Solution Approach 2:
The patent introduces an acoustic field as an intermediary medium to transmit information about the interior of passageways. Instead of direct mechanical access, ultrasonic waves serve as the intermediary that carries diagnostic information through the material, enabling indirect observation of flaws without physical intervention
2Measurement precision
If conventional NDT techniques are used, then detection of some flaws is possible, but access to restricted areas is limited
Solution Approach 1:
The patent substitutes mechanical probing with acoustic wave propagation. Ultrasonic waves can penetrate and navigate complex geometries and restricted access areas that are inaccessible to mechanical probes or human operators, enabling inspection of hard-to-reach passageways without requiring physical access
3Measurement precision
If disassembly is performed to enable NDT, then flaw detection is possible, but time and cost increase
Solution Approach 1:
The patent replaces mechanical disassembly operations with non-contact acoustic inspection. By using ultrasonic waves that can penetrate materials and navigate internal geometries, the system eliminates the time-consuming processes of disassembly, inspection, and reassembly, enabling direct in-situ inspection
Solution Approach 2:
The patent enables inspection to be performed before any disassembly or maintenance activities. By using acoustic field methods that work through intact materials, the system allows for preliminary detection of flaws while the structure is still assembled, preventing the need for subsequent disassembly and reassembly cycles
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach facilitates non-destructive testing of aerospace components in situ, reducing the need for disassembly and new fasteners, while improving the detection of flaws and fatigue assessment, thus enhancing the longevity and operational use of aircraft beyond original design limits.
Implementation Method 1
phased array ultrasonic scanning
Implementation Method 2
detection of flaws associated with passageways
Data Source
Figure 1~2
Figure 3
Figure 4A~4C
AI summary
A method of non-destructive testing of an article (20) is described. The article has a first surface (21). The article (20) article (20 comprises a set of passageways (200), including a first passageway (200 A). Respective sets of flaws (2000) are associated with respective passageways of the set of passageways (200), including a first set of flaws (2000A), optionally including a first flaw (2000AA), associated with the first passageway (200 A). The method comprises phased array ultrasonic scanning of the article (20) using a phased array probe communicatively coupled thereto through the first surface (21); and detecting the first flaw (2000AA), if included in the first set of flaws (2000A) associated with the first passageway (200A).