caa a22 4500 465741339 CHVBK 20180323111809.0 cr unu---uuuuu 170327e19900401xx s 000 0 eng 10.1007/BF01185959 doi (NATIONALLICENCE)springer-10.1007/BF01185959 A study on the ductile fracture of Al-alloys 7075 and 2017 [Elektronische Daten] [H. Miyamoto, M. Kikuchi, T. Kawazoe] The mechanism of the ductile fracture is studied experimentally for the Al-alloys 7075-T6 and 2017-T4 specimen. The experiments are conducted for the 1CT specimen and they are analyzed by using the acoustic emission and FRASTA (Fracture Surface Topographic Analysis) technique and the process of the fracture is investigated in real time. By the frequency analysis there are 3 kinds of AE patterns of the AE occurrence. By using the FRASTA technique, the details of voids nucleation and growth and the coalescence of voids and crack and the crack propagation process is clarified visually. AE with small amplitude corresponds to the cracking and decohesion of the inclusions and the AE of the large energy with eminent low cycle components corresponds to the high speed coalescence of cracks and voids nearby and this energy corresponds to the propagation area of the crack. Kluwer Academic Publishers, 1990 Miyamoto H. Science University of Tokyo, Noda, Japan aut Kikuchi M. Science University of Tokyo, Noda, Japan aut Kawazoe T. Science University of Tokyo, Noda, Japan aut International Journal of Fracture Kluwer Academic Publishers 42/4(1990-04-01), 389-404 0376-9429 42:4<389 1990 42 10704 https://doi.org/10.1007/BF01185959 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01185959 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Miyamoto H. Science University of Tokyo, Noda, Japan aut NATIONALLICENCE 700 1- Kikuchi M. Science University of Tokyo, Noda, Japan aut NATIONALLICENCE 700 1- Kawazoe T. Science University of Tokyo, Noda, Japan aut NATIONALLICENCE 773 0- International Journal of Fracture Kluwer Academic Publishers 42/4(1990-04-01), 389-404 0376-9429 42:4<389 1990 42 10704 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer