一种喷管表面声载荷结构响应测试装置和测试方法
By combining a scaled-down nozzle test piece with acoustic sensors, the accuracy problem of testing the acoustic load and acoustic vibration response on the nozzle surface was solved, and high signal-to-noise ratio acoustic load testing of the nozzle outer wall was achieved, providing an effective method for nozzle structure design and acoustic fatigue control.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- AECC SHENYANG ENGINE RES INST
- Filing Date
- 2025-07-17
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies make it difficult to accurately test the acoustic load and acoustic vibration response of the nozzle surface on scaled-down test specimens. Furthermore, traditional methods may damage the nozzle structure, resulting in low test accuracy and difficulty in establishing equivalent studies of the acoustic vibration response of the nozzle outer wall.
A combination of nozzle scale-down test specimens, test brackets, and acoustic sensors was used to optimize the dynamic stress test layout of the nozzle outer wall through a non-contact pressure field test method, combined with simulation and impact methods, to obtain the acoustic load distribution and acoustic vibration response characteristics of the nozzle outer wall.
It enables high signal-to-noise ratio acoustic load testing on the outer wall of the nozzle, reduces the impact of internal flow interference and equipment vibration, and provides technical support for nozzle structure design and acoustic fatigue control.
Smart Images
Figure CN120702707B_ABST