Experimental Study in Determining the Stress Intensity Factor by Using the Grid Method
Keyword(s):
Mode I
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Grid method was used to measure the stress intensity factor KI of a mode I fracture specimen. The fracture specimen used in this study was a compact tension (CT) specimen made of 6061-T6 aluminum. A grid of dots was bonded along a radial line on the surface of the CT specimen. A 2D computer vision was used to acquire the images around the crack tip before and after the deformation of the CT specimen. Then the method of single dot was used to measure the magnitude and direction of the in-plane principle strains at the dot centers. Experimental results indicate that the measured strains can be used to accurately determine KI.
Keyword(s):
2020 ◽
Vol 223
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pp. 106737
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1997 ◽
Vol 28
(2)
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pp. 135-140
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2011 ◽
Vol 83
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pp. 54-59
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1996 ◽
Vol 80
(2-3)
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pp. R55-R58
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