Abstract
A series of studies of electromagnetic radiation (EMR) emitted during fracture of materials, enabled us to obtain a relationship between the width of a fracture and the wavelength of the emitted EMR. Applying this relation to friction we could check one of its suggested mechanisms, namely the Bowden-Tabor model, which states that during a friction process, asperities on the two contacting surfaces are “welded” together (at a microscopic level) and fractured. A uniaxial tension machine was used, whereby two half cylinders of chalk (CaCO3) bound together, were moved one against the other, generating friction. Calculations based on EMR observations showed that the average width of the fractured asperities was ∼26.3 μm, while mechanical profilograph measurements of the average width of the total number of “long” asperilies before and after the experiment, yielded values of 15.6 and 18.4 μm, respectively, implying that ∼25% of “long” asperities were fractured during a single friction process.
Article PDF
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.Avoid common mistakes on your manuscript.
References
Bowden, F. P., Tabor, D. (2001). The Friction and Lubrication of Solids (Oxford Univ. Press, New York.
Frid, V., Rabinovitch A., Bahat, D. (2003). Fracture induced electromagnetic radiation. J. Phys. D. 36, 1620–1628.
Rabinovitch, A., Frid, V., Bahat, D., Goldbaum, J. (2000). Fracture area calculation from electromagnetic radiation and its use in chalk failure analysis, Int. J. Rock Mech. Min. Sci. 37, 1149–1154.
Bahat D., Rabinovitch, A., Frid, V. (2001). Fracture characterization of chalk in uniaxial and triaxial tests by rock mechanics, fractographic and electromagnetic methods. J. Stuctural Geology 23, 1531–1547.
Bahat, D., Rabinovitch, A., Frid, V. (2004). Tensile fracture in rocks. Invited monograph by Springer-Verlag, Heidelberg
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Rabinovitch, A., Shay, A., Liraz, R. et al. Electromagnetic radiation emitted during friction process. Int J Fract 131, L21–L27 (2005). https://doi.org/10.1007/s10704-005-2596-9
Issue Date:
DOI: https://doi.org/10.1007/s10704-005-2596-9