@Article{sl.2012.008.007,
AUTHOR = {S. Suzuki},
TITLE = {An Experimental Study on Crack Bifurcation by Optical Methods},
JOURNAL = {Structural Longevity},
VOLUME = {8},
YEAR = {2012},
NUMBER = {1},
PAGES = {7--14},
URL = {http://www.techscience.com/sl/v8n1/42885},
ISSN = {1944-6128},
ABSTRACT = {Two kinds of experiments are described on rapid crack bifurcation.
One is static experiments with stationary bifurcated cracks. The static experiments
demonstrate <i>COD</i> method that measures crack opening displacement, <i>COD</i>, to obtain stress intensity factor of bifurcated cracks. Moirè interferometry is used to
measure <i>COD</i>. The other is dynamic experiments on bifurcation of fast propagating cracks. High-speed holographic microscopy is applied to take photographs of
rapidly bifurcating cracks and to measure <i>COD</i> of the cracks. The measured <i>COD</i>s
give the energy release rate of bifurcating cracks through the <i>COD</i> method developed in the static experiments. The experimental results say that energy release rate
increases gradually and continuously across the bifurcation point.},
DOI = {10.3970/sl.2012.008.007}
}