TY - GEN
T1 - Research on Plane Stress Measurement Method For CFRP Based on Array LCR Waves
AU - Sun, Lianwei
AU - Shi, Weijia
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - Stress concentration occurs in composite materials during preparation, processing to assembly and service, and it is crucial to conduct stress detection on them. Composite materials have anisotropic properties, resulting in complex ultrasonic stress relationships. In this paper, an array ultrasonic critical refractive longitudinal plane stress measurement method is proposed. Aiming at the interference of noise on the calculation results of acoustic time difference, a multi-resolution wavelet noise reduction algorithm is designed to process the echo signal. In order to verify the feasibility of the method, stress loading experiments were carried out on Carbon fibre reinforced plastics (CFRP) specimens in the range of 0-160 MPa, and the results showed that the stress measurement error was less than ±8.96 MPa and the angular measurement error was less than ±6.87°. The CFRP structural components in the wing box section specimen were tested for assembly stresses, which provides a basis for future internal stress testing experiments on composite structural components of aircraft.
AB - Stress concentration occurs in composite materials during preparation, processing to assembly and service, and it is crucial to conduct stress detection on them. Composite materials have anisotropic properties, resulting in complex ultrasonic stress relationships. In this paper, an array ultrasonic critical refractive longitudinal plane stress measurement method is proposed. Aiming at the interference of noise on the calculation results of acoustic time difference, a multi-resolution wavelet noise reduction algorithm is designed to process the echo signal. In order to verify the feasibility of the method, stress loading experiments were carried out on Carbon fibre reinforced plastics (CFRP) specimens in the range of 0-160 MPa, and the results showed that the stress measurement error was less than ±8.96 MPa and the angular measurement error was less than ±6.87°. The CFRP structural components in the wing box section specimen were tested for assembly stresses, which provides a basis for future internal stress testing experiments on composite structural components of aircraft.
KW - Anisotropy
KW - Carbon fibre reinforced plastics
KW - Critical refractive longitudinal wave
KW - plane stress
UR - https://www.scopus.com/pages/publications/85185566612
U2 - 10.1109/SPAWDA60286.2023.10412335
DO - 10.1109/SPAWDA60286.2023.10412335
M3 - 会议稿件
AN - SCOPUS:85185566612
T3 - 2023 17th Symposium on Piezoelectricity, Acoustic Waves, and Device Applications, SPAWDA 2023
BT - 2023 17th Symposium on Piezoelectricity, Acoustic Waves, and Device Applications, SPAWDA 2023
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 17th Symposium on Piezoelectricity, Acoustic Waves, and Device Applications, SPAWDA 2023
Y2 - 10 November 2023 through 12 November 2023
ER -