TY - JOUR
T1 - Effect of impact energy on damage resistance and mechanical property of C/SiC composites under low velocity impact
AU - Mei, Hui
AU - Yu, Changkui
AU - Xu, Yawei
AU - Han, Daoyang
AU - Cheng, Laifei
N1 - Publisher Copyright:
© 2017 Elsevier B.V.
PY - 2017/2/27
Y1 - 2017/2/27
N2 - The present study investigated the damage resistance of two dimensional carbon fiber reinforced silicon carbide (C/SiCs) composites subjected to low velocity impact (LVI). Damage microstructures of specimens under different impact energies (Ei) were characterized by infrared thermography, X-ray computed tomography and scanning electron microscopy. The real damage radii of specimens were found to change slightly with Ei, whereas apparent damage radii where much larger. Overall, the fabricated 2D C/SiC composites exhibited good damage resistance to LVI with nominal post-impact tensile strengths remaining at 89.4%, 83.35%, 76.97%, and 74.84% of their pre-impacted counterpart of 158 MPa, for impact energies of 3, 4, 5, and 6 J, respectively. Compared with the as-received one, after LVI real tensile strengths of the C/SiC composite specimens increased by 5.84% for the Ei of 3 J, 9.27% for 4 J, −1.83% for 5 J, −3.16% for 6 J.
AB - The present study investigated the damage resistance of two dimensional carbon fiber reinforced silicon carbide (C/SiCs) composites subjected to low velocity impact (LVI). Damage microstructures of specimens under different impact energies (Ei) were characterized by infrared thermography, X-ray computed tomography and scanning electron microscopy. The real damage radii of specimens were found to change slightly with Ei, whereas apparent damage radii where much larger. Overall, the fabricated 2D C/SiC composites exhibited good damage resistance to LVI with nominal post-impact tensile strengths remaining at 89.4%, 83.35%, 76.97%, and 74.84% of their pre-impacted counterpart of 158 MPa, for impact energies of 3, 4, 5, and 6 J, respectively. Compared with the as-received one, after LVI real tensile strengths of the C/SiC composite specimens increased by 5.84% for the Ei of 3 J, 9.27% for 4 J, −1.83% for 5 J, −3.16% for 6 J.
KW - Ceramic-matrix composites
KW - Damage tolerance
KW - Mechanical properties
KW - Mechanical testing
KW - Non-destructive testing
UR - http://www.scopus.com/inward/record.url?scp=85010440887&partnerID=8YFLogxK
U2 - 10.1016/j.msea.2017.01.062
DO - 10.1016/j.msea.2017.01.062
M3 - 文章
AN - SCOPUS:85010440887
SN - 0921-5093
VL - 687
SP - 141
EP - 147
JO - Materials Science and Engineering: A
JF - Materials Science and Engineering: A
ER -