Skip to main content
Log in

Fatigue and creep in chipboard

Part 3. The effect of frequency

  • Originals
  • Published:
Wood Science and Technology Aims and scope Submit manuscript

Summary

Structural grade chipboard used as floor decking can be exposed to a combination of creep loading, and fatigue loading at a wide range of frequencies. Creep loads are produced by static masses such as machinery. Fatigue loads arise from intermittent loads such as fork lift trucks in motion, people in motion, or vibrating machinery.

Four-point bend tests in fatigue and creep have been performed simultaneously on matched sets of four structural grade chipboard samples. The aim was to examine the effect of frequency on the fatigue performance of chipboard by following the rate of microstrain development in each case at the same peak stress. The ratio of the minimum to the maximum fatigue stress (the R ratio) was set at R = 0.1. Fatigue tests were performed at three different frequencies classified as low, medium and high, determined by the rate of application of stress.

The performance of chipboard in flooring applications is shown to be highly dependent on the loading frequency. Increasing the frequency increased the number of cycles to failure as did reducing the stress level. Using hysteresis loop capture to monitor damage accumulation during testing indicates that there is a fatigue limit for chipboard loaded at constant amplitude at some point just below 20% of its static bending strength.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  • Bonfield, P. W.; Dinwoodie, J. M.; Ansell, M. P.; Hacker, C. L. (1993): Damage quantification of wood and wood-based products via stress-strain hysteresis loop capture. Proceedings of COST 508 Workshop on Failure and Plasticity in Wood

  • Bonfield, P. W.; Hacker, C. L.; Ansell, M. P.; Dinwoodie, J. M. (1994): Fatigue and creep of chipboard. Part 1. Fatigue at R = 0.01. Wood Sci. Technol. 28: 423–436

    Google Scholar 

  • BRE Digest 373 (1992): Wood Chipboard. The Building Research Establishment, Garston, Watford

  • BS 5669 (1989): British Standard for particleboard. British Standards Institution

  • Dinwoodie, J. M.; Higgins, J.-A.; Paxton, B. H.; Robson, D. J. (1990): Creep research on particleboard. 15 Year's Work at the UK Building Research Establishment. Holzals Roh-Werkstoff. 48: 5–10

    Google Scholar 

  • Dinwoodie, J. M.; Paxton, B. H.; Bonfield, P. W.; Mundy, J. S. (1995): Fatigue and creep in chipboard. Part 2. The influence of slow cyclic fatigue on the creep behaviour of chipboard at a range of stress levels and moisture contents. Wood Sci. Technol. 29: 64–76

    Google Scholar 

  • Thompson, R. J. H.; Bonfield, P. W.; Dinwoodie, J. M.; Ansell, M. P. (1994): Creep and fatigue of chipboard in flexure. Proceedings of The Pacific Timber Engineering Conference. Vol. 2: 521–530. July 11–16, Gold Coast, Australia

Download references

Author information

Authors and Affiliations

Authors

Additional information

This research was supported by the Building Research Establishment who also supported the postgraduate case award in conjunction with the Engineering and Physical Sciences Research Council (EPSRC)

Rights and permissions

Reprints and permissions

About this article

Cite this article

Thompson, R.J.H., Bonfield, P.W., Dinwoodie, J.M. et al. Fatigue and creep in chipboard. Wood Sci.Technol. 30, 293–305 (1996). https://doi.org/10.1007/BF00223550

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00223550

Keywords

Navigation