Deformation, acoustic emission and ultrasound velocity during fatigue tests on paper

A. Miksic, J. Koivisto, Emma Mykkänen, J. Saarenpää, M. Alava, K. Mustonen, Pasi Karppinen, Timo Karppinen, Edward Häggström

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

1 Citation (Scopus)
27 Downloads (Pure)

Abstract

We study the evolution of mechanical properties of paper samples during
cyclic experiments. The issue is to look at the sample-to-sample variation, and we try to predict the number of loading cycles to failure. We used two concurrent methods to obtain the deformation: the strain was calculated from vertical displacement measured by laser interferometer sensor, as well as, computed by digital image correlation technique from pictures taken each 2s by a camera. Acoustic emission of fracture was also recorded, and an active ultrasonic wave method using piezoelectric transducers is used to follow the viscoelastic behaviour of each sample. We found that a sharp final increase of different variables like deformation, strain rate and fluctuations, are signs of
an imminent rupture of the paper. Moreover looking at the evolution of these quantities during the first cycle only is already an indicator about the lifetime of the sample.
Original languageEnglish
Title of host publicationICEM 14 – 14th International Conference on Experimental Mechanics
PublisherEDP Sciences
Pages1-8
ISBN (Electronic)9782759805655
DOIs
Publication statusPublished - 2010
MoE publication typeA4 Article in a conference publication
EventInternational Conference on Experimental Mechanics - Poitiers, France
Duration: 4 Jul 20109 Jul 2010
Conference number: 14

Publication series

NameEPJ Web of Conferences
PublisherEDP Sciences
Volume6
ISSN (Electronic)2100-014X

Conference

ConferenceInternational Conference on Experimental Mechanics
Abbreviated titleICEM
Country/TerritoryFrance
CityPoitiers
Period04/07/201009/07/2010

Keywords

  • DIC
  • experiment on paper
  • fatigue
  • fracture
  • ultrasound method

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