caa a22 4500 465741169 CHVBK 20180323111809.0 cr unu---uuuuu 170327e19900301xx s 000 0 eng 10.1007/BF00013214 doi (NATIONALLICENCE)springer-10.1007/BF00013214 Dynamic measurement of the J integral in ductile metals: Comparison of experimental and numerical techniques [Elektronische Daten] [Alan Zehnder, Ares Rosakis, Sridhar Krishnaswamy] Experiments and analyses designed to develop an extension of the method of caustics to applications in dynamic, elastic-plastic fracture mechanics are described. A relation between the caustic diameter, D, and the value of the J integral was obtained experimentally and numerically for a particular statically loaded specimen geometry (three point bend) and material (4340 steel). Specimens of the same geometry and material were then loaded dynamically in impact. The resulting caustics, recorded using high speed photography, were analyzed on the basis of the J versus D relation to determine the time history of the dynamic value of J, J d (t). The history of J d thus obtained is compared with good agreement to an independent determination of J d (t) based on a two-dimensional, dynamic, elastic-plastic finite element analysis, which used the experimentally measured loads as traction boundary conditions. Kluwer Academic Publishers, 1990 Zehnder Alan Graduate Aeronautical Laboratories, California Institute of Technology, 91125, Pasadena, California, USA aut Rosakis Ares Graduate Aeronautical Laboratories, California Institute of Technology, 91125, Pasadena, California, USA aut Krishnaswamy Sridhar Graduate Aeronautical Laboratories, California Institute of Technology, 91125, Pasadena, California, USA aut International Journal of Fracture Kluwer Academic Publishers 42/3(1990-03-01), 209-230 0376-9429 42:3<209 1990 42 10704 https://doi.org/10.1007/BF00013214 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00013214 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zehnder Alan Graduate Aeronautical Laboratories, California Institute of Technology, 91125, Pasadena, California, USA aut NATIONALLICENCE 700 1- Rosakis Ares Graduate Aeronautical Laboratories, California Institute of Technology, 91125, Pasadena, California, USA aut NATIONALLICENCE 700 1- Krishnaswamy Sridhar Graduate Aeronautical Laboratories, California Institute of Technology, 91125, Pasadena, California, USA aut NATIONALLICENCE 773 0- International Journal of Fracture Kluwer Academic Publishers 42/3(1990-03-01), 209-230 0376-9429 42:3<209 1990 42 10704 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer