A high-temperature fatigue strength-based organic glass storage period prediction method

By constructing a high-temperature fatigue performance evaluation model for acrylic glass and a flexible adjustable boundary test device, the problems of accuracy and efficiency in the evaluation of the storage cycle of aviation acrylic glass in the existing technology have been solved, realizing rapid and accurate evaluation of the storage cycle and reducing aircraft repair costs.

CN122436067APending Publication Date: 2026-07-21SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
Filing Date
2026-03-24
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing technologies lack effective methods to accurately assess the storage life of aviation acrylic glass, resulting in its inability to meet the storage life requirements of transparent parts during aircraft repair. Furthermore, existing methods such as artificial accelerated aging and empirical analogy suffer from low efficiency or excessive conservatism.

Method used

By determining the profile and flight parameter data used for evaluating the high-temperature fatigue performance of plexiglass, a flexible and adjustable boundary test device was constructed. Axial fatigue load was applied, and a model of the change trend of the median fatigue life over time was established to determine the storage period that meets the high-temperature fatigue performance index.

Benefits of technology

It enables rapid and accurate assessment of the storage cycle of aviation acrylic glass, improves the scientific nature and efficiency of storage, and reduces aircraft repair costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application belongs to the technical field of aircraft maintenance, and particularly relates to a high-temperature fatigue strength-based organic glass storage period prediction method. The method comprises the following steps: determining a use profile and flight parameter data for high-temperature fatigue performance evaluation of the organic glass; determining a use temperature of the organic glass according to the flight parameter data; determining stress of the organic glass under a high-temperature environment; constructing a flexible adjustable boundary test device to clamp the glass test piece; compiling a fatigue test load spectrum of the high-temperature fatigue performance evaluation temperature and load coupling of the organic glass according to the calculated use temperature and stress data; applying an axial fatigue load to the clamping block through the chuck under a high-temperature condition to determine the fatigue median life of the glass test piece under different storage times; constructing a trend model of the fatigue median life with time; and determining the storage period meeting the high-temperature fatigue performance index according to the trend model. The application can quickly and accurately give the storage period of the aviation organic glass.
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