Fatigue crack growth in SiC particle reinforced Al alloy matrix composites at high and low R-ratios by in situ X-ray synchrotron tomography. - Hruby, Peter; Singh, Sudhanshu S.; Williams, Jason J.; Xiao, Xianghui; De Carlo, Francesco; Chawla, Nikhilesh (International Journal of Fatigue, 2014)