Abstract
The influence of externally applied unidirectional stress on the lowest-order Lamb modes of a 12-μm poly(ethylene terephthalate) (PET) film has been investigated both theoretically and experimentally. The Lamb wave dispersion was determined in a fully contactless way by using optical generation and detection of ultrasound. The elastic parameters of the film material were obtained by fitting the angle dependence of the low-frequency limit of the velocity of the fundamental Lamb modes. Whereas the dispersion of the symmetric mode S0 is only slightly influenced by an external stress, the antisymmetric mode A0 shows a transition from dispersion behavior determined by the elastic constants at small stresses to a behavior dominated by the applied stress at large stresses.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
