Graphite/epoxy-tape test specimens

Constructed specimens for tranverse tensile testing of unidirectional graphite/epoxy tape is tested more accurately than earlier samples. Specimens are made using unsupported adhesive and commercially-available (e.g., Nomex, or equivalent) honeycomb core. Flexible adhesive and dimensionally stable core eliminate uneven thermal expansion. Tensile strength of tape at various temperatures becomes direct function of applied mechanical stress.