Journal of Materials Science

, Volume 14, Issue 1, pp 151–158 | Cite as

What does the pendulum hardness test measure?

  • P. G. Fox
  • I. B. Freeman


Various modes of energy absorption are considered as possible explanations for pendulum attenuation in the dynamic hardness testing of soda lime silica glass. It is concluded that the test gives little direct information about fracture processes, the major part of the energy absorption being accounted for by plastic flow in the solid as in the case of static hardness measurements. However, it is proposed that the effects of aqueous environments (which may be produced catalytically at the crack tip) can be observed by their effects on the yield stress and the onset of cracking of the glass.


Attenuation Lime Energy Absorption Plastic Flow Fracture Process 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Chapman and Hall Ltd. 1979

Authors and Affiliations

  • P. G. Fox
    • 1
  • I. B. Freeman
    • 1
  1. 1.Department of Metallurgy and Materials ScienceNottingham UniversityNottinghamUK

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