TY - GEN
T1 - Numerical and experimental characterization of high-speed impact damage in CFRP unidirectional and cross-ply laminates
AU - Ogi, K.
AU - Yashiro, S.
AU - Takahashi, M.
AU - Yoshimura, A.
PY - 2010/1/1
Y1 - 2010/1/1
N2 - This paper aims at characterizing the high-speed impact damage behavior in CFRP unidirectional (UD) and cross-ply (CP) laminates. First, high-speed (~ 400 m/s) impact damage was introduced by collision of a flying steel sphere (projectile) to CFRP plates with the use of an electric heat gun. The surface and internal damages of the CFRP specimens were observed by using optical microscopy together with radiography. The damage process model was then established on the basis of the experimental result. Next, the dynamic finite element analysis was performed to simulate the damage process. Cohesive elements were introduced in the analysis to express the initiation and propagation of delamination while the maximum stress fracture criteria were employed to express another type of damage such as tensile, compressive and shear failure of the elements. Finally, the simulation was compared with the experimental results to understand the damage evolution mechanism.
AB - This paper aims at characterizing the high-speed impact damage behavior in CFRP unidirectional (UD) and cross-ply (CP) laminates. First, high-speed (~ 400 m/s) impact damage was introduced by collision of a flying steel sphere (projectile) to CFRP plates with the use of an electric heat gun. The surface and internal damages of the CFRP specimens were observed by using optical microscopy together with radiography. The damage process model was then established on the basis of the experimental result. Next, the dynamic finite element analysis was performed to simulate the damage process. Cohesive elements were introduced in the analysis to express the initiation and propagation of delamination while the maximum stress fracture criteria were employed to express another type of damage such as tensile, compressive and shear failure of the elements. Finally, the simulation was compared with the experimental results to understand the damage evolution mechanism.
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M3 - Conference contribution
AN - SCOPUS:84905449176
SN - 9781632660756
T3 - 7th Asian-Australasian Conference on Composite Materials 2010, ACCM 2010
SP - 261
EP - 264
BT - 7th Asian-Australasian Conference on Composite Materials 2010, ACCM 2010
PB - ACCM-7 Organizing Committee
T2 - 7th Asian-Australasian Conference on Composite Materials 2010, ACCM 2010
Y2 - 15 November 2010 through 18 November 2010
ER -