caa a22 4500 463230205 CHVBK 20180405153239.0 cr unu---uuuuu 170326e20070201xx s 000 0 eng 10.1007/s10853-006-1445-1 doi (NATIONALLICENCE)springer-10.1007/s10853-006-1445-1 Effects of fiber orientation on the acoustic emission and fracture characteristics of composite laminates [Elektronische Daten] [Nak-Sam Choi, Sung-Choong Woo, Kyong-Yop Rhee] The effects of fiber orientation on acoustic emission (AE) characteristics have been studied for various composite laminates. Reflection and transmission optical microscopy were used to investigate the damage zone of specimens. AE signals were classified through short time Fourier transform (STFT) as different types: AE signals with a high intensity and high frequency band were due to fiber fracture, while weak AE signals with a low frequency band were due to matrix cracking and/or interfacial cracking. Characteristic feature in the rate of hit-events having high amplitudes showed a procedure of fiber breakages, which expressed the characteristic fracture processes of notched fiber-reinforced plastics with different fiber orientations. As a consequence, the behavior of fracture in the continuous composite laminates could be monitored through nondestructive evaluation (NDE) using the AE technique. Springer Science+Business Media, LLC, 2007 Choi Nak-Sam Department of Mechanical Engineering, Hanyang University, 1271, Sa-1dong, 426-791, Ansan-si, Kyunggi-do, Korea aut Woo Sung-Choong Department of Mechanical Design, Graduate School, Hanyang University, 17, Haengdang-dong, 133-791, Sungdong-ku, Seoul, Korea aut Rhee Kyong-Yop School of Mechanical and Industrial System Engineering, Kyunghee University, 449-701, Yongin, Korea aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/4(2007-02-01), 1162-1168 0022-2461 42:4<1162 2007 42 10853 https://doi.org/10.1007/s10853-006-1445-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-1445-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Choi Nak-Sam Department of Mechanical Engineering, Hanyang University, 1271, Sa-1dong, 426-791, Ansan-si, Kyunggi-do, Korea aut NATIONALLICENCE 700 1- Woo Sung-Choong Department of Mechanical Design, Graduate School, Hanyang University, 17, Haengdang-dong, 133-791, Sungdong-ku, Seoul, Korea aut NATIONALLICENCE 700 1- Rhee Kyong-Yop School of Mechanical and Industrial System Engineering, Kyunghee University, 449-701, Yongin, Korea aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/4(2007-02-01), 1162-1168 0022-2461 42:4<1162 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer