A5054602843- Ultrasonics and Acoustic Wave Propagation
- Non-Destructive Testing Techniques
- Structural Health Monitoring Techniques
- Indoor and Outdoor Localization Technologies
- Mechanical Behavior of Composites
- Target Tracking and Data Fusion in Sensor Networks
- Industrial Vision Systems and Defect Detection
- Thermography and Photoacoustic Techniques
- Smart Materials for Construction
- Robotics and Sensor-Based Localization
- Transportation Safety and Impact Analysis
Shandong University
2020-2025
Nanjing University of Science and Technology
2019
The present study delved into the effect of impactor diameter on low velocity impact response and damage characteristics CFRP. Moreover, phased array ultrasonic technique (PAUT) was adopted to identify damages based double-sided scanning. Low-velocity tests were carried out using three hemispherical impactors with different diameters. relationship diameters analyzed by C-scans S-scans, combined parameters. Subsequently, assessed in terms dent depth, delamination area extension shape via...
This paper presents a method based on signal correlation to detect delamination defects of widely used carbon fiber reinforced plastic with high precision and convenient process. The objective it consists in distinguishing defect non-defect signals presenting the depth size by image. A necessary reference is generated from area using autocorrelation theory firstly. Through calculation results, are distinguished Euclidean distance. In order get more accurate time-of-flight, cubic spline...
Carbon fiber reinforced plastics inevitably develop defects such as delamination, inclusions, and impacts during manufacturing usage, which can adversely affect their performance. Ultrasonic phased array inspection is the most effective method for conducting nondestructive testing to ensure quality. However, diversity of within carbon makes it challenging current ultrasonic techniques accurately identify these defects. Therefore, this paper presents a classification various internal in based...
In this paper, an ultrasonic signal processing method is proposed to improve depth evaluation of phased array non-destructive testing in composite structures. The algorithm based on improved adaptive time–frequency analysis algorithm, and a combination empirical mode decomposition, correlation coefficient analysis, fuzzy entropy Hilbert transform. decomposed into intrinsic functions (IMFs) using complete ensemble decomposition with noises. Subsequently, the are used select optimal IMFs...
ABSTRACT This paper presents a signal correlation–based two-sided detection method to detect delamination defects in widely used carbon fiber reinforced plastics with high accuracy and convenient process. can improve the of ultrasonic testing distinguish non-defective signals from defective signals, especially those small amplitude, present depth size by images. We combined echo both sides at same location extract weak defect achieved materials attenuation. First, empirical mode...
In the application of standard Kalman filter in GPS data, state equation cannot nearly reflect actual motion trajectory target, leading to poor filtering effect. order solve this problem, a piecewise cubic Hermite interpolation function is constructed by using position information real points on target and direction obtained coordinate difference. Hence, weighted correction for variables based improves filter. experimental analysis, coordinates constant velocity curvilinear are corrected....