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…by ~10 mm; the specimen was then
unloaded at 30 mm/min
f) Load Cycle 2: Step (e) was repeated once more
g) The critical strain energy release rate Gc was determined using the “area
method”, based on load-displacement curves measured during Cycles 1 & 2
* Sketch extracted from: Ratcliffe, J.G., and Reeder, J.R., “Sizing a Single Cantilever Beam Specimen…
https://www.wichita.edu/industry_and_defense/NIAR/Documents/jams-presentations/13-Jayaram-Moisture-Diffusion.pdf