Abstract
A transient grating laser ultrasonic method known as real-time impulsive stimulated thermal scattering is used to excite and monitor Lamb acoustic waveguide modes in free-standing thin polyimide films which are known to have transverse isotropic symmetry. The dispersion of these Lamb modes is used to accurately evaluate both the in and out-of-plane elastic moduli.
Original language | English (US) |
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Pages (from-to) | 312-314 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 65 |
Issue number | 3 |
DOIs | |
State | Published - 1994 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)