Scaling of sound emission energy and fracture behavior of cellular solid foods

M.B.J. Meinders, T. van Vliet

Research output: Contribution to journalArticleAcademicpeer-review

13 Citations (Scopus)


A detailed study was performed of the fracture behavior of toasted rusk rolls, a cellular solid food, at different water activities and morphologies. We find that the energies of the emitted sound pulses follow Gutenberg-Richter power laws with characteristic exponents b~1.5. The scaling exponents varied only within a range of 0.2 when the method of fracture, humidity, or morphology was changed. However, differences in b were observed, indicating nonuniversal behavior, that seems to be related to morphology and water activity. Also, power law scaling behavior was observed for the waiting time distributions with an exponent a~1.9.
Original languageEnglish
Article number036116
JournalPhysical Review. E, Statistical nonlinear, and soft matter physics
Issue number3
Publication statusPublished - 2008


  • self-organized criticality
  • acoustic-emission
  • dynamic fracture
  • crackling noise
  • model
  • precursors
  • paper
  • dry


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