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research article

Manufacturing and toughening effects on the material properties of wind turbine blade adhesives

Vadugappatty Srinivasan, Dharun  
•
Vassilopoulos, Anastasios P.  
December 1, 2022
Polymer Testing

Hybrid adhesives can be developed using commercially available adhesive materials and customized to the required loading conditions. In this paper, SPABONDTM 820HTA (non-toughened) and SPABONDTM 840HTA (toughened) adhesives are hybridized by two strategies and fabricated by machine and manual mixing methods. The manufacturing and hybridization effects on the bulk adhesive properties are evaluated by dynamic me-chanical analysis, quasi-static tensile, V-notch shear and single-edge-notch bending tests. X-ray micro-computed tomography, digital image correlation technique, high speed camera and scanning electron microscopic images are used for assessing the manufacturing quality, computing the full-field displacement and strain, and failure analysis. By considering the manufacturing methods, the measured properties are less influenced by the presence of voids but dependent on the glass fiber filler orientation. The adhesive toughening method improves the strain to failure and tensile toughness, decreases the strength and modulus and no significant effect on the glass transition temperature.

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Type
research article
DOI
10.1016/j.polymertesting.2022.107770
Web of Science ID

WOS:000862929700003

Author(s)
Vadugappatty Srinivasan, Dharun  
•
Vassilopoulos, Anastasios P.  
Date Issued

2022-12-01

Published in
Polymer Testing
Volume

116

Article Number

107770

Subjects

Materials Science, Characterization & Testing

•

Polymer Science

•

Materials Science

•

wind turbine blade

•

composites

•

epoxy adhesive

•

toughening

•

void

•

failure analysis

•

structural epoxy adhesive

•

mechanical-properties

•

tensile-strength

•

joints

•

performance

•

fracture

•

particles

Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
CCLAB  
FunderGrant Number

FNS

IZCOZ0_189905

Available on Infoscience
October 24, 2022
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/191508
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