Creep and stress relaxation Both creep and stress relaxation characterise the behaviour of paper after stretching. In a creep experiment, stress σ remains constant after the initial straining indicated in Figure 1. The specimen therefore creeps and slowly becomes longer. On the other hand, in the stress relaxation measurement of Figure 1, the specimen elongates
Authors & references
Professor Jouni Paltakari, Aalto University
Based on: Ketoja, J. Rheology (Chapter 8). In: Niskanen, K. (ed), Paper Physics, (Book 16), Papermaking Science and Technology. 2nd edition. Jyväskylä, 2008, Finnish Paper Engineers’ Association/Paperi ja Puu Oy. pp. 295 – 318.
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