Source abstract
Abstract
The accurate characterisation of contact stress at rotor mating surfaces is of critical importance for ensuring the assembly quality of aero-engines. The ultrasonic method serves as an important method for contact stress quantification at mating surfaces, where the focusing performance of ultrasonic waves at mating surfaces is the key factor in achieving precise characterisation. An in-depth analysis of the acoustic field focusing characteristics of phase-reversal Fresnel zone plate (PR-FZP) in direct contact with solids is presented. Comparative analysis of the focusing performance of PR-FZP fabricated from different materials indicates that the PR-FZP made of T2 achieves the highest acoustic intensity of 1.89 × 107 W/m2, along with a smaller full width at half maximum (FWHM). Adding a matching layer structure to PR-FZP does not enhance its focusing performance. Incorporating a reflective layer significantly improves the focusing capability of PR-FZP, with tungsten-based reflective layers demonstrating optimal performance by achieving 1.349 times the acoustic intensity of PR-FZP without a reflective layer. Finally, the influence of lens thickness parameters on PR-FZP focusing characteristics was analysed. The study revealed that the acoustic intensity of PR-FZP exhibits periodic variation trends with changes in remaining lens thickness and groove depth.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Ultrasonics and Acoustic Wave Propagation · Digital Holography and Microscopy · Metamaterials and Metasurfaces Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Anhui University of Technology
Suqian University
Jiangsu Engineering Research Center of Key Technology for Intelligent Manufacturing Equipment
Harbin Institute of Technology
Ministry of Industry and Information Technology
Funding
Natural Science Foundation of Anhui Province of China · University Natural Science Research Project of Anhui Province of China · National Natural Science Foundation of China · Open Fund Project of Modern Precision measurement and laser Nondestructive testing Key Laboratory of Fujian University · Open Fund of Fujian Key Laboratory of Force Measurement · Open Project of Anhui Province Key Laboratory of Special Heavy Load Robot · “Fertile Soil Plan” project of Anhui University of Technology · Student Research & Training Program in Anhui University of Technology, China
References (27)
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