Ultrasonic Transducer Array PPE Frame Residual Stress
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Solution Overview
Problem
Conventional electronic radial type ultrasonic transducers face challenges in maintaining uniform material environment and interval consistency between transducer elements, leading to image quality issues and difficulties in identifying specific transducers, especially in small arrays, due to adhesive layer variability and residual stress.
Innovation Solution
The use of polyphenylether (PPE) as a frame material for the ultrasonic transducer array, combined with acoustic matching layers and a spacer made from the same material as the outermost acoustic matching layer, ensures uniformity and accurate alignment of transducer elements, and distinct coloring of division members to facilitate easy identification of predefined transducers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If adhesive is used to join transducer elements, then assembly is simplified, but residual stress and durability problems occur
Solution Approach 1:
The patent removes the adhesive layer from the transducer element assembly, eliminating the source of residual stress and durability problems while maintaining structural integrity through direct mechanical joining of elements to the support member
Solution Approach 2:
The patent employs a composite structure where transducer elements are directly coupled to a support member with specific mechanical properties, creating a stress-distributing composite assembly that eliminates adhesive-related failures
2Measurement precision
If transducer elements are closely arrayed, then image resolution improves, but interval consistency becomes difficult to maintain
Solution Approach 1:
The patent divides the transducer array into discrete elements mounted on a support member with predetermined spacing features, allowing each element to be positioned independently at precise intervals while maintaining overall array density for high resolution
Solution Approach 2:
The support member is pre-configured with positioning features and spacing structures before transducer elements are attached, ensuring consistent intervals are maintained throughout the array without requiring high-precision alignment during assembly
3Measurement precision
If joint parts are minimized, then image quality improves, but structural strength may be compromised
Solution Approach 1:
The patent merges the transducer element mounting structure with the support member itself, creating an integrated assembly where elements are directly coupled without separate joint components, thereby eliminating joint influences on image quality while maintaining structural integrity through the unified design
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 configuration enhances image quality by minimizing the impact of joint variations and improves transducer reliability by preventing residual stress-related failures, while allowing for precise alignment and easy identification of transducers, resulting in consistent and high-quality ultrasonic imaging across 360 degrees.
Implementation Method 1
a plurality of piezoelectric elements (23) which are arrayed at even intervals and in a cylindrical shape and transmit and receive ultrasonic waves
Implementation Method 2
laminated by a plurality of acoustic matching layers (200, 200b)
Data Source
AI summary
An ultrasonic transducer arraying at even intervals ultrasonic transducers for transmitting and receiving ultrasonic waves and layering a plurality of acoustic matching layers on them, comprising an transducer shape forming member made of a fiber-reinforced thermosetting PPE for filling a gap formed on the side face of the ultrasonic transducer with the same material as that of the acoustic matching layer, mixing a colorant in a division member adjacent to a predefined ultrasonic transducer from among a plurality of ultrasonic transducers, and arraying the plurality thereof.