Nanoindentation Method for Measuring Residual Stress in Brittle Materials

The lowered threshold load for cracking with the cube‐corner indenter has been used in developing a method that can be used to measure residual stresses in small volume brittle materials. By studying a series of orthogonal cracks generated at loads not exceeding 10 mN with the cube‐corner indenter,...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 2003-05, Vol.86 (5), p.811-816
Main Authors: Kese, Kwadwo, Rowcliffe, David J.
Format: Article
Language:English
Subjects:
Applied sciences
brittle materials
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Fatigue, brittleness, fracture, and cracks
Glasses
indentation
Mechanical and acoustical properties of condensed matter
Mechanical properties of solids
Physics
stress
Structure, analysis, properties
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Summary:The lowered threshold load for cracking with the cube‐corner indenter has been used in developing a method that can be used to measure residual stresses in small volume brittle materials. By studying a series of orthogonal cracks generated at loads not exceeding 10 mN with the cube‐corner indenter, a variation of crack length with position around a large Vickers impression in soda–lime glass was observed. Using an indentation fracture mechanics approach residual stresses were evaluated at the positions where the cube‐corner indents had been made. The stress values thus evaluated were generally higher than those reported in the literature where micro‐Vickers indents had been used to measure the stresses. Possible reasons for the disparity are discussed.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1151-2916.2003.tb03380.x