Open-hole fatigue testing of UD-GFRP composite laminates containing aligned CNTs using infrared thermography

Jayaram R. Pothnis; Akshay K. Hajagolkar; A. R. Anilchandra; Raj Das; Suhasini Gururaja

doi:10.1016/j.compstruct.2023.117557

Open-hole fatigue testing of UD-GFRP composite laminates containing aligned CNTs using infrared thermography

Jayaram R. Pothnis
, Akshay K. Hajagolkar
, A. R. Anilchandra
, Raj Das
, Suhasini Gururaja

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English
Article number	117557
Journal	Composite Structures
Volume	324
DOIs	https://doi.org/10.1016/j.compstruct.2023.117557
Publication status	Published - 15 Nov 2023
Externally published	Yes

Keywords

Carbon nanotubes
Electric field alignment
High cycle fatigue
Infrared thermography
Multi-scale composites

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10.1016/j.compstruct.2023.117557

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@article{bc28c6c0ae5b4124b9f18d17cbd7a125,

title = "Open-hole fatigue testing of UD-GFRP composite laminates containing aligned CNTs using infrared thermography",

abstract = "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.",

keywords = "Carbon nanotubes, Electric field alignment, High cycle fatigue, Infrared thermography, Multi-scale composites",

author = "Pothnis, \{Jayaram R.\} and Hajagolkar, \{Akshay K.\} and Anilchandra, \{A. R.\} and Raj Das and Suhasini Gururaja",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier Ltd",

year = "2023",

month = nov,

day = "15",

doi = "10.1016/j.compstruct.2023.117557",

language = "English",

volume = "324",

journal = "Composite Structures",

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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

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 - https://www.scopus.com/pages/publications/85171440013

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 -

Open-hole fatigue testing of UD-GFRP composite laminates containing aligned CNTs using infrared thermography

Abstract

Keywords

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