Fabrication and testing of composite ring specimensThe tooling and techniques used in the fabrication of composite laminate tubes of any desired ply orientation and stacking sequence are described along with techniques for cutting ring specimens under internal pressure. The method consists of laying up the tube on a central circular mandrel, and by means of internal pressure, expanding the prepreg tube against the cavity wall of an external mold tool, which forms the geometric curing envelope for the tube. Tube quality is assessed by laminate wall thickness measurement, by hoop strength measurement on rings cut from the ends of the tube, and by ultrasonic inspection.
Document ID
19790047023
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Liber, T. (IIT Research Inst. Chicago, IL, United States)
Daniel, I. M. (IIT Research Inst. Chicago, IL, United States)
Labedz, R. (IIT Research Inst. Chicago, IL, United States)
Niiro, T. (IIT Research Institute Chicago, Ill., United States)