EFFECT OF SPAN LENGTH ON THE IN?PLANE TENSILE STRENGTH Of PAPERBOARD, TAPPICon22

The in‐plane tensile strength of paper typically shows a decrease as span length increases, a phenomena attributed to the weakest link theory and quantifiable by the Peirce equation from 1926.  In this work, we measured the strength of four commercial paperboards over a range of span lengths and demonstrate that the original Peirce equation shows a very good fit to the data.  The Weibull approach was also investigated and can provide a more accurate prediction for certain materials.  The probability distributions indicate a transition from ductile to brittle response over an increase in span length.

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