TY - JOUR
T1 - Influence of patch lay-up configuration and hybridization on low velocity impact and post-impact tensile response of repaired glass fiber reinforced plastic composites
AU - Andrew, J. Jefferson
AU - Srinivasan, Sivakumar M.
AU - Arockiarajan, A.
N1 - Funding Information:
We are immensely grateful to Dr. R Velmurugan, Professor, Department of Aerospace Engineering, IITM for providing impact test facility to carry out impact experiments. Also, we would like to express our sincere thanks to Dr. G Balaganesan for his support in carrying out the fabrication of composite specimens.
Publisher Copyright:
© The Author(s) 2018.
PY - 2019/1/1
Y1 - 2019/1/1
N2 - This paper aims to investigate the effect of homogenous and hybrid external patches based on plain weave woven glass and Kevlar fabric on low velocity impact and quasi-static tensile after impact response of adhesively bonded external patch repairs in damaged glass/epoxy composite laminates. In all hybrid patches, the proportion of Kevlar and glass fibers were equal (i.e. 50% of Kevlar and 50% of glass by volume fraction), while lay-up configuration was different. This further enables to study the associated effect of hybridization and lay-up configuration on impact response of the repaired laminates. The intent of using hybrid external patches is to combine the excellent high displacement-to-failure property of Kevlar fiber as a ductile reinforcement with the superior mechanical property of glass fiber as a brittle reinforcement. The effect of glass/Kevlar content on impact response and tensile after impact response was investigated for various incident impact energy levels, such as 2, 4, 6, and 8 J. Results showed that hybridization and lay-up configurations of the external patches played a significant role on low velocity impact and quasi-static tensile after impact response of the repaired glass/epoxy specimens. Specimens repaired using intra-ply hybrid patches showed better impact properties and damage tolerance capability than that of the virgin and other repaired specimens. In specific, the use of intra-ply hybrid patches reduced the impact energy absorption by 10.17% in comparison to the virgin specimens at impact energy of 8 J.
AB - This paper aims to investigate the effect of homogenous and hybrid external patches based on plain weave woven glass and Kevlar fabric on low velocity impact and quasi-static tensile after impact response of adhesively bonded external patch repairs in damaged glass/epoxy composite laminates. In all hybrid patches, the proportion of Kevlar and glass fibers were equal (i.e. 50% of Kevlar and 50% of glass by volume fraction), while lay-up configuration was different. This further enables to study the associated effect of hybridization and lay-up configuration on impact response of the repaired laminates. The intent of using hybrid external patches is to combine the excellent high displacement-to-failure property of Kevlar fiber as a ductile reinforcement with the superior mechanical property of glass fiber as a brittle reinforcement. The effect of glass/Kevlar content on impact response and tensile after impact response was investigated for various incident impact energy levels, such as 2, 4, 6, and 8 J. Results showed that hybridization and lay-up configurations of the external patches played a significant role on low velocity impact and quasi-static tensile after impact response of the repaired glass/epoxy specimens. Specimens repaired using intra-ply hybrid patches showed better impact properties and damage tolerance capability than that of the virgin and other repaired specimens. In specific, the use of intra-ply hybrid patches reduced the impact energy absorption by 10.17% in comparison to the virgin specimens at impact energy of 8 J.
KW - adhesively bonded external patch repair
KW - glass fiber reinforced plastic (GFRP)
KW - hybrid external patches
KW - low velocity impact
KW - Polymer composites
KW - tensile after impact
UR - http://www.scopus.com/inward/record.url?scp=85048150448&partnerID=8YFLogxK
U2 - 10.1177/0021998318779430
DO - 10.1177/0021998318779430
M3 - Article
AN - SCOPUS:85048150448
SN - 0021-9983
VL - 53
SP - 3
EP - 17
JO - Journal of Composite Materials
JF - Journal of Composite Materials
IS - 1
ER -