The difficulty in defining the size and growth of cracks in paper’s cellulosic fiber network were overcome with optically measured strain fields. Paper specimens were loaded with monotonically increasing, constant, and sinusoidally varying cyclic stresses, and the resulting tensile, creep, and fatigue damage accumulation rates were compared. This research details paper’s high-cycle fatigue degradation mechanism. Paper commonly experiences fatigue loading in such applications, but a high-cycle fatigue mechanism has not been identified. ![]() ![]() ![]() The mechanical durability of paper is a key consideration for applications ranging from shipping boxes to disposable medical substrates.
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