The thermally induced deformation of anisotropic composite tubes with different thicknesses is studied by means of Finite-Element-Analyses and interferometric measurement techniques. Of particular interest are the differences in the deformation behavior in comparison to isotropic tubes. It is shown that characteristic bending phenomena appear at the shell surfaces of the tubes, due to the three-dimensional stress state near the edges. The simulated thermal deformation is experimentally verified by means of holographic as well as speckle interferometry. The results of this work show that the implemented micro- and macromechanics of both used Finite- Element systems enables to predict the thermal deformation of composite tubes properly, if a suitable model is used. Nevertheless, especially for thin tubes significant discrepancies between the simulated and the measured deformation could appear, due to the disregarding of the complex microscopic structure in the simulation. Thus experimental verifications with fullfield measurement techniques should generally be performed.

Date Published: 29 September 1998
PDF: 8 pages
Proc. SPIE 3407, International Conference on Applied Optical Metrology, (29 September 1998); doi: 10.1117/12.323351

Published in SPIE Proceedings Vol. 3407:
International Conference on Applied Optical Metrology
Pramod Kumar Rastogi; Ferenc Gyimesi, Editor(s)