Photoacoustic Determination of the Residual Stress and Transverse Isotropic Elastic Moduli in Thin Films of the Polyimide PMDA/ODA

John A. Rogers and Keith A. Nelson

ABSTRACT We present results of experiments on thin films of the polyimide PMDA/ODA using the real-time impulsive stimulated thermal scattering (ISTS) technique. We determine the transverse isotropic modulus, and we describe a method which allows residual stress determination from ISTS data. The residual stress determined in this way is in good agreement with measurements made using other techniques.

© 1995, by The Institute of Electrical and Electronics Engineers, Inc. All rights reserved.

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