Open AccessMeasurement of composite material strain using correlation of ultrasonic images
Author(s) -
С. А. Титов,
В. М. Левин,
Yu.S. Petronuk,
Egor Morokov
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1636/1/012025
Subject(s) - ultrasonic sensor , materials science , transverse plane , composite material , digital image correlation , composite number , strain (injury) , measure (data warehouse) , sample (material) , carbon fiber composite , acoustic microscopy , fiber , visualization , scanning acoustic microscope , microscopy , acoustics , structural engineering , optics , computer science , physics , engineering , artificial intelligence , anatomy , medicine , database , thermodynamics
This paper is devoted to the evaluation of composite materials and components using ultrasonic visualization of structural changes caused by the external force. It is proposed to measure the strain of a sample under load using digital correlation of images recorded by a scanning acoustic microscope. An algorithm for processing the spatio-temporal ultrasonic data is developed to measure the longitudinal and transverse strains versus the applied force. The four-layer carbon fiber-reinforced composites with alternating packing of fibers (90/45) are evaluated by the proposed method. The relationships between the strains and the applied force are obtained up to the destruction of the sample. It is shown that the maximal longitudinal and transverse strains achieved for the test sample are 1.2% and 0.3%, respectively.