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  4. A Novel Method to Quantify Self-Healing Capabilities of Fiber-Reinforced Polymers
 
research article

A Novel Method to Quantify Self-Healing Capabilities of Fiber-Reinforced Polymers

Scazzoli, Cecilia  
•
Trigueira, Robin  
•
Cohades, Amael  
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July 18, 2022
Frontiers In Materials

The present work investigates a novel and practical method to evaluate the healing efficiency of carbon-reinforced polymer composites. The method should be representative of damage occurring during the lifetime of a composite part, should tend to damage the healable matrix mostly and yet be simple and cost-effective to set up. Thus, the capacity to recover low-velocity impact damage has been evaluated via three-point bending flexural tests. Carbon-reinforced composite laminates were produced using HealTech (TM) T300-TW200-42RW-1250, a commercially healable resin pre-impregnated Torayca T300 3K twill 2 x 2 fabric with an aerial weight of 200 g/m(2). Fibers were oriented at +/- 45 degrees or at 0 degrees-90 degrees, and the laminates were impacted at different energy levels. Flexural properties of undamaged, damaged, and healed samples were compared, and the healing efficiency was calculated as the ratio of healed and undamaged ultimate flexural strength or modulus. Since matrix healing efficiency is the value to characterize, it was shown that +/- 45 degrees laminates could be tested without major fiber damage and, thus, provide the best matrix healing efficiency results. Such a method proved to be 1) representative of early-stage damage of composite FRPs often occurring in the form of delamination or matrix microcracking, and 2) a fast and reliable characterization technique requiring the use of a limited amount of material.

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Type
research article
DOI
10.3389/fmats.2022.932287
Web of Science ID

WOS:000840772500001

Author(s)
Scazzoli, Cecilia  
Trigueira, Robin  
Cohades, Amael  
Michaud, Veronique  
Date Issued

2022-07-18

Publisher

FRONTIERS MEDIA SA

Published in
Frontiers In Materials
Volume

9

Article Number

932287

Subjects

Materials Science, Multidisciplinary

•

Materials Science

•

self-healing

•

circular economy

•

composites

•

polymers

•

mechanical properties

•

composite healing

•

healing characterization

•

damage detection

•

repair

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LPAC  
Available on Infoscience
August 29, 2022
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/190292
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