A method was developed and demonstrated for determination of the chemical cure shrinkage in polymeric matrix composites. A prepreg layer is applied on an identical layer of the same material which has already been cured and postcured. The assembled laminate is then cured and postcured and the resulting warpage is recorded by means of the shadow moire method. This warpage, consisting of elliptical equal deflection contours, is correlated to the chemical shrinkage by means of lamination theory. The two principal components of chemical shrinkage are related to the fringe order and the dimensions of the principal axes of any elliptical fringe.
|Original language||English (US)|
|Number of pages||3|
|Journal||Annual Technical Conference - Society of Plastics Engineers|
|State||Published - Dec 1 1989|
ASJC Scopus subject areas