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Influence of notch depth-to-width ratios on J-integral and critical failure load of single-edge notched tensile aluminium 8011 alloy specimens

Publication Type : Journal Article

Publisher : Journal of Solid Mechanics

Source : Journal of Solid Mechanics, Islamic Azad University Arak Branch, Volume 10, Number 1, p.86-97 (2018)

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Keywords : Aluminium 8011 alloy, Critical failure load, Fracture toughness, J-integral, Notch depth

Campus : Coimbatore

School : School of Engineering

Department : Mechanical Engineering

Year : 2018

Abstract : In this paper, the influence of notch depth-to-width ratios on J-integral and critical load of Aluminium 8011 alloy specimens with U-notch under Mode I loading are studied. Using experiments, for a set of specimens having different notch depth–to–width ratios, J-integral was found and the same was verified using analytical methods. Further, using the results obtained from the experiments, failure assessment diagrams (FAD) were plotted for the same ratios, to determine the safe or critical load and the type of failure mechanism was also studied. The results show that, for both shallow and deep notch depths, the J-integral values obtained from the experimental method, are in very close agreement with the analytical values. J-integral values decrease with increase in notch depth and increase with increase in applied load. Furthermore, from FAD, the safe load decreases when the notch depth-to-width ratio increases and it was found that, all the tested specimens failed due to elastic plastic deformation mechanism.

Cite this Research Publication : Sumesh C.S. and Narayanan, P. J. Arun, “Influence of Notch Depth-to-Width Ratios on J-Integral and Critical Failure Load of Single-Edge Notched Tensile Aluminium 8011 Alloy Specimens”, Journal of Solid Mechanics, vol. 10, pp. 86-97, 2018.

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