Electrochemical impedance spectroscopy to monitor degradation of carbon fiber reinforced polymer composites subjected to simulated ocean environment
General Material Designation
[Thesis]
First Statement of Responsibility
M. M. Ahmed
Subsequent Statement of Responsibility
S. M. Lipka
.PUBLICATION, DISTRIBUTION, ETC
Name of Publisher, Distributor, etc.
Florida Atlantic University
Date of Publication, Distribution, etc.
1993
PHYSICAL DESCRIPTION
Specific Material Designation and Extent of Item
201
DISSERTATION (THESIS) NOTE
Dissertation or thesis details and type of degree
M.S.
Body granting the degree
Florida Atlantic University
Text preceding or following the note
1993
SUMMARY OR ABSTRACT
Text of Note
This research evaluated the applicability of electrochemical impedance spectroscopy (EIS) as a non-destructive technique to predict and characterize the degradation of carbon fiber reinforced polymer (CFRP) composites exposed to aqueous environments at ambient and 6.2 0.3 MPa. Changes in EIS data were related to water uptake into the composite material as a function of exposure time. Electrochemically induced damage (both anodic and cathodic) were also evaluated using impedance measurements. Three point flexure tests with concurrent EIS measurements were employed to study the effect of stresses on water uptake and mechanical degradation. Visual observation of the extent of damage (i.e., fiber-matrix debonding) was made using scanning electron microscopy (SEM) and correlated with EIS observation.