Wrinkle characterization and performance prediction for composite structures

摘要

#$%^&*AU2017245369A120180517.pdf#####ABSTRACT Methods that provide wrinkle characterization and performance prediction for wrinkled composite structures using automated structural analysis. In accordance with some embodiments, the method combines the use of B-scan ultrasound data (170), automated optical measurement of wrinkles and geometry of cross-sections (172), and finite element analysis (174) of wrinkled composite structure to provide the ability to assess the actual significance of a detected wrinkle relative to the intended performance of the structure. The disclosed method uses an ultrasonic inspection system that has been calibrated by correlating (156) ultrasonic B-scan data acquired from reference standards with measurements of optical cross sections (e.g., micrographs) of those reference standards.3/8 DISPLAY 308 DEVICE 300 t 302 COMPUTING SYSTEM 304 DATAACQUISITION ANALYSIS SYSTEM MODULE PULSER/ /306 FIG. 3 RECEIVER 100 UNIT 12/ 102 108 106 ___ 106 104 -110 112 114 118 120 (116 122 ...- ..,.. ..... ,. ......... ,. ..... ,... F IG . 4 Time