TY - JOUR
T1 - Open-hole fatigue testing of UD-GFRP composite laminates containing aligned CNTs using infrared thermography
AU - Pothnis, Jayaram R.
AU - Hajagolkar, Akshay K.
AU - Anilchandra, A. R.
AU - Das, Raj
AU - Gururaja, Suhasini
N1 - Publisher Copyright:
© 2023 Elsevier Ltd
PY - 2023/11/15
Y1 - 2023/11/15
N2 - The present study aims to characterize the open-hole fatigue (OHF) behavior of unidirectional glass fiber-reinforced polymer matrix (UD-GFRP) epoxy composites containing aligned multi-walled carbon nanotubes (MW-CNTs) locally reinforcing the composite in the vicinity of the hole. The performance of these multi-scale composites has been compared with that of composites containing randomly oriented MW-CNTs around the hole. UD-GFRP containing neat epoxy (without MW-CNTs) as a matrix were the control samples in the study. Infrared thermography has been used to investigate the damage evolution in composites during the OHF tests. MW-CNTs, aligned perpendicular to the loading direction, improved the fatigue strength of the UD-GFRP composites by over 12% compared to the control samples. Fractography results are also presented in support of the findings from fatigue testing. Infrared thermography is presented as a method to rapidly determine the high cycle fatigue strength of the OHF specimens.
AB - The present study aims to characterize the open-hole fatigue (OHF) behavior of unidirectional glass fiber-reinforced polymer matrix (UD-GFRP) epoxy composites containing aligned multi-walled carbon nanotubes (MW-CNTs) locally reinforcing the composite in the vicinity of the hole. The performance of these multi-scale composites has been compared with that of composites containing randomly oriented MW-CNTs around the hole. UD-GFRP containing neat epoxy (without MW-CNTs) as a matrix were the control samples in the study. Infrared thermography has been used to investigate the damage evolution in composites during the OHF tests. MW-CNTs, aligned perpendicular to the loading direction, improved the fatigue strength of the UD-GFRP composites by over 12% compared to the control samples. Fractography results are also presented in support of the findings from fatigue testing. Infrared thermography is presented as a method to rapidly determine the high cycle fatigue strength of the OHF specimens.
KW - Carbon nanotubes
KW - Electric field alignment
KW - High cycle fatigue
KW - Infrared thermography
KW - Multi-scale composites
UR - http://www.scopus.com/inward/record.url?scp=85171440013&partnerID=8YFLogxK
U2 - 10.1016/j.compstruct.2023.117557
DO - 10.1016/j.compstruct.2023.117557
M3 - Article
AN - SCOPUS:85171440013
SN - 0263-8223
VL - 324
JO - Composite Structures
JF - Composite Structures
M1 - 117557
ER -