caa a22 4500 465750648 CHVBK 20180323111832.0 cr unu---uuuuu 170327e19900301xx s 000 0 eng 10.1007/BF02322706 doi (NATIONALLICENCE)springer-10.1007/BF02322706 COD measurements at various positions along a crack [Elektronische Daten] [W. Sharpe Jr., X. Su] Load versus crack-opening displacement (COD) was measured at various positions along the border of a fatigue crack as it grew from a small surface crack on the edge of an aluminum specimen into a through-the-thickness crack. Displacements were measured with a laser-based interferometric system with a gage length of 70 μm and a resolution of 0.01 μm. These load-COD curves can be used to determine opening loads and thereby investigate the effect of closure on the growth of cracks. In general, the opening loads decrease as the crack grows. The compliances after the crack is fully open can also be measured, and show generally good agreement with the predictions of linear-elastic fracture mechanics. Society for Experimental Mechanics, Inc., 1990 Sharpe Jr. W. Department of Mechanical Engineering, The Johns Hopkins University, 127 Latrobe Hall, 21218, Baltimore, MD aut Su X. Institute of Aeronautical Materials, P.O. Box 81-23, Beijing, The People's Republic of China aut Experimental Mechanics Kluwer Academic Publishers 30/1(1990-03-01), 74-79 0014-4851 30:1<74 1990 30 11340 https://doi.org/10.1007/BF02322706 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02322706 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sharpe Jr W. Department of Mechanical Engineering, The Johns Hopkins University, 127 Latrobe Hall, 21218, Baltimore, MD aut NATIONALLICENCE 700 1- Su X. Institute of Aeronautical Materials, P.O. Box 81-23, Beijing, The People's Republic of China aut NATIONALLICENCE 773 0- Experimental Mechanics Kluwer Academic Publishers 30/1(1990-03-01), 74-79 0014-4851 30:1<74 1990 30 11340 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer