Mechanical state assessment using lamb wave technique in static tensile tests

International Conference and Youth Scientific School on "Materials and Technologies of New Generations in Modern Materials Science"

Burkov, M.V.^1,2 ; Shah, R.T.^1 ; Eremin, A.V.^1,2 ; Byakov, A.V.^1,2 ; Panin, S.V.^1,2

Institute of High Technology Physics, National Research Tomsk Polytechnic University, Lenina ave 30, Tomsk

634050, Russia^1

ISPMS SB RAS, Akademicheskiy ave 2/4, Tomsk

634021, Russia^2

关键词: Adhesively bonded;    Informative parameters;    Piezoelectric transducers (PZT);    Recorded signals;    Specimen surfaces;    Static tensile tests;    Stress strain state;    Ultrasonic techniques;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/156/1/012009/pdf
DOI  :  10.1088/1757-899X/156/1/012009

来源: IOP

【 摘 要 】

The paper deals with the investigation of Lamb wave ultrasonic technique for damage (or mechanical state) evaluation of AA7068T3 specimens in the course of tensile testing. Two piezoelectric transducers (PZT), one of which is used as an actuator and the other as sensor, were adhesively bonded on the specimen surface using epoxy. Two frequencies of testing signals (60 kHz and 350 kHz) were used. The set of static tensile tests were performed. The recorded signals were processed to calculate the informative parameters in order to evaluate the changes in stress-strain state of the specimens and their microstructure.