Fatigue In Tension Perpendicular to the Grain

Christian Odin Clorius, Martin Uhre Pedersen, Preben Hoffmeyer, Lars Damkilde

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Abstract

Traditionally fatigue resistance is quantified as number of cycles to failure at a given stress level. A previous study by the authors showed that fatigue in compression parallel to the grain is governed partly by duration of load and partly by an effect of loading, i.e. a combination of a creep mechanism and a mechanism connected to damage introduced in the loading sequences. The purpose of the present study is to disentangle the effect of duration of load from the effect of load oscillation in fatigue in tension perpendicular to the grain. Fatigue experiments are made on small specimens and on dowel type joints with slotted in steel plates. In series of ten, the small specimens are taken to fatigue failure in uniform tension at square wave shaped load cycles at 0.01 Hz and 0.1 Hz. In arder to test the predictive validity of the result from the small tension specimens, fatigue experiments are made on dowel type connections that have tension perpendicular to the grain as limiting strength parameter. It is concluded that no significant influence of duration of load is observed w hen the fatigue resistance of small specimens at 0.01 Hz and 0.1 Hz are compared. A weak but inconclusive time dependency is observed for the fatigue experiments on dowel type connections
Original languageEnglish
Title of host publicationProceedings of Third International Conference of the European Society for Wood Mechanics
Publication date2004
Pages8
Publication statusPublished - 2004
EventThird International Conference of the European Society for Wood Mechanics - Vila Real, Portugal
Duration: 5 Sep 20048 Sep 2004
Conference number: 3rd

Conference

ConferenceThird International Conference of the European Society for Wood Mechanics
Number3rd
CountryPortugal
CityVila Real
Period05/09/200408/09/2004

Keywords

  • Fatigue
  • Wood
  • Tension
  • Stress Level
  • Moisture Content
  • Load Oscillation

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  • Cite this

    Clorius, C. O., Pedersen, M. U., Hoffmeyer, P., & Damkilde, L. (2004). Fatigue In Tension Perpendicular to the Grain. In Proceedings of Third International Conference of the European Society for Wood Mechanics (pp. 8)