Composite material structure damage monitoring method and system
A technology for structural damage and composite materials, which is applied to the analysis of materials, the use of sound waves/ultrasonic waves/infrasonic waves for material analysis, and measurement devices. It can solve problems such as long diagnosis time, multiple monitoring paths, and impact on monitoring efficiency. Improve efficiency, The effect of reducing quantity and improving acquisition efficiency
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0046] This embodiment provides a composite material structure damage monitoring method, refer to figure 1 , including the following steps:
[0047] Get the response signal sample;
[0048] According to the preset multiple feature selection parameters, after extracting multiple feature vectors of the response signal samples one by one, combining the multiple feature vectors into a feature vector set, and normalizing the feature vector set to obtain a standard feature vector set;
[0049] The feature vectors of the standard feature vector set are input into the pre-trained support vector machine classification model, and the classification results output by the support vector machine classification model are obtained.
[0050] In the application, the classification result includes an initial healthy state signal, a slight damage state signal, a moderate damage state signal or a severe damage state signal.
[0051]The present invention obtains the composite material structure ...
Embodiment 2
[0053] On the basis of Embodiment 1, this embodiment provides a method for obtaining response signal samples, a method for obtaining multiple feature selection parameters, a method for obtaining an optimal monitoring path set, and preset initial health status, slight damage status, moderate How to set damage status and serious damage status.
[0054] (1) Response signal sample
[0055] The method for obtaining a response signal sample includes the following steps:
[0056] refer to figure 2 , preset the monitoring area on the structure to be monitored, such as glass fiber reinforced plastics, but not limited to this, and after arranging a piezoelectric sheet at each of the 4 corners of the monitoring area, connect the 4 piezoelectric sheets in pairs to form 6 monitoring paths; the piezoelectric film at the beginning of each monitoring path excites the transmitter, and the other end acts as a responding receiver.
[0057] The piezoelectric sheet at the beginning of each mon...
Embodiment 3
[0091] This embodiment provides a composite material structure damage monitoring system, including the following modules:
[0092] A sample acquisition module, configured to acquire a response signal sample;
[0093] The sample processing module is used to extract multiple feature vectors of the response signal samples one by one according to preset multiple feature selection parameters, combine the multiple feature vectors into a feature vector set, and standardize the feature vector set;
[0094] The classification module is used to input the feature vectors of the standard feature vector set into the pre-trained support vector machine classification model, and obtain the classification result output by the support vector machine classification model.
[0095] For the implementation of the specific functions of the above functional modules, refer to the relevant content in the method of Embodiment 1 or 2.
[0096] Those skilled in the art should understand that the embodime...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More