caa a22 4500 465742041 CHVBK 20180323111810.0 cr unu---uuuuu 170327e19900601xx s 000 0 eng 10.1007/BF00018341 doi (NATIONALLICENCE)springer-10.1007/BF00018341 Surface and interior stress intensity factor measurement by a random speckle method [Elektronische Daten] [F. Chiang, Hua Lu] An embedded random speckle method is developed to measure the displacement, both on the surface and interior, around a crack tip of a four-point bend specimen made of Plexiglas. From the displacement measurements in different planes across the thickness, stress intensity factors are evaluated assuming either a plane stress or a plane strain condition. The results are compared with theoretical and other experimental values. The variation of SIF across the thickness clearly demonstrates the existence of the effect of free surface. Kluwer Academic Publishers, 1990 Chiang F. Laboratory for Experimental Mechanics Research, Department of Mechanical Engineering, State University of New York at Stony Brook, 11794-2300, Stony Brook, New York, USA aut Lu Hua Laboratory for Experimental Mechanics Research, Department of Mechanical Engineering, State University of New York at Stony Brook, 11794-2300, Stony Brook, New York, USA aut International Journal of Fracture Kluwer Academic Publishers 43/3(1990-06-01), 185-194 0376-9429 43:3<185 1990 43 10704 https://doi.org/10.1007/BF00018341 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00018341 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chiang F. Laboratory for Experimental Mechanics Research, Department of Mechanical Engineering, State University of New York at Stony Brook, 11794-2300, Stony Brook, New York, USA aut NATIONALLICENCE 700 1- Lu Hua Laboratory for Experimental Mechanics Research, Department of Mechanical Engineering, State University of New York at Stony Brook, 11794-2300, Stony Brook, New York, USA aut NATIONALLICENCE 773 0- International Journal of Fracture Kluwer Academic Publishers 43/3(1990-06-01), 185-194 0376-9429 43:3<185 1990 43 10704 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer