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Dependence of Peak Stress on Crack Inclination and Friction Coefficient During Compressive Fracture

[+] Author Affiliations
Ameya Deshpande, Gaurav Singh

BITS, Pilani (Goa Campus), Zuarinagar, India

Paper No. IMECE2017-70694, pp. V009T12A039; 5 pages
doi:10.1115/IMECE2017-70694
From:
  • ASME 2017 International Mechanical Engineering Congress and Exposition
  • Volume 9: Mechanics of Solids, Structures and Fluids; NDE, Structural Health Monitoring and Prognosis
  • Tampa, Florida, USA, November 3–9, 2017
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5844-8
  • Copyright © 2017 by ASME

abstract

In the present work, an experimental study to analyze the role of friction between the crack faces and crack inclination in compressive fracture of wood has been conducted. Different orientations of (parallel to grain) central slit cracks in wood samples were put under quasi-static uniaxial compression to measure the peak stress carried by the sample. In order to extend the analysis to different friction coefficients at the crack faces without altering other properties, the wood was kept unchanged while the crack faces were coated with paint and polish. The peak stress was largeley observed to increase with an increase in the crack inclination (wrt horizontal) and decrease in the friction coefficient between the crack faces.

Copyright © 2017 by ASME

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