TY - JOUR
T1 - Characterization of high-velocity impact damage in CFRP laminates
T2 - Part i - Experiment
AU - Yashiro, Shigeki
AU - Ogi, Keiji
AU - Nakamura, Tsukasa
AU - Yoshimura, Akinori
N1 - Funding Information:
S.Y. acknowledges the support of the Ministry of Education, Culture, Sports, Science and Technology of Japan under Grants-in-Aid for Scientific Research (Nos. 21360417 and 22760524). The authors would like to express appreciation for technical supports from Mr. Masamichi Nakata and Mr. Takuya Ioka of Ehime University.
PY - 2013
Y1 - 2013
N2 - This study investigated mechanisms of the extension of high-velocity impact damage in CFRP laminates. To this end, damage states due to near-perforation impact were studied in detail. This study consists of two parts. Part I presents the experiment results of high-velocity impact tests for CFRPs with specified stacking sequences. A crater and splits were observed on the impacted surface, while multiple splits with fiber breaks extended on the back surface. The cross-section beneath the impact point included catastrophic ply failure with extensive fiber breaks. Impacted specimens also exhibited a particular delamination pattern consisting of pairs of symmetric fan-shaped delaminations emanating from to the impact point and elongated delamination along the cracks in the bottom ply. These damage patterns were common to all of the stacking sequences. Part II of this study presents a numerical analysis of high-velocity impact based on smoothed-particle hydrodynamics and discusses damage extension mechanisms.
AB - This study investigated mechanisms of the extension of high-velocity impact damage in CFRP laminates. To this end, damage states due to near-perforation impact were studied in detail. This study consists of two parts. Part I presents the experiment results of high-velocity impact tests for CFRPs with specified stacking sequences. A crater and splits were observed on the impacted surface, while multiple splits with fiber breaks extended on the back surface. The cross-section beneath the impact point included catastrophic ply failure with extensive fiber breaks. Impacted specimens also exhibited a particular delamination pattern consisting of pairs of symmetric fan-shaped delaminations emanating from to the impact point and elongated delamination along the cracks in the bottom ply. These damage patterns were common to all of the stacking sequences. Part II of this study presents a numerical analysis of high-velocity impact based on smoothed-particle hydrodynamics and discusses damage extension mechanisms.
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U2 - 10.1016/j.compositesa.2012.12.015
DO - 10.1016/j.compositesa.2012.12.015
M3 - Article
AN - SCOPUS:84874103332
SN - 1359-835X
VL - 48
SP - 93
EP - 100
JO - Composites - Part A: Applied Science and Manufacturing
JF - Composites - Part A: Applied Science and Manufacturing
IS - 1
ER -