TAPPI-T 811 ECT Testing Machine

TAPPI-T 811 – Edgewise compressive strength of corrugated fiberboard (short column test)

Edge Crush (ECT)

This method describes procedures for determining the edgewise compressive strength (ECT), perpendicular to the axis of the flutes, of a short column of single-, double-, or triple-wall corrugated fiberboard (1).

The method includes procedures for cutting the test specimen, specimen support (waxed edges), and two procedures for applying the compressive force (constant strain rate, or constant load rate). Studies have shown that any combination of these procedures will yield the same test results with the stated precision (Section 9).