Document Type
Article
Source Publication Title
Composite Structures (Elsevier)
Abstract
Composite materials are widely used in aerospace and automotive structures for decades and over the years the community has gained a better understanding of the damage and failure modes of composites under fatigue. In this article, a dielectric characterization methodology for in-situ monitoring of composites under fatigue environments is proposed. A novel method of measuring the dielectric state variables in Broadband Dielectric Spectroscopy (BbDS) using Extremely Conductive Silver Epoxy Adhesive (ECSEA) paste is presented. These dielectric state variables serve to identify the precursor of the beginning of the end of life of the composite material under fatigue loading. The reliability of using this method for in-situ monitoring to provide fatigue life estimates and to indicate the immediate need for maintenance, repair and/or replacement of the structural component is discussed. [This is an original manuscript / preprint of an article published in Composite Structures in 2021, available online: https://doi.org/10.1016/j.compstruct.2021.114272] [Publisher's Policies: https://www.elsevier.com/about/policies/sharing]
Disciplines
Engineering | Materials Science and Engineering
Publication Date
10-1-2021
Language
English
License
This work is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 4.0 International License.
Recommended Citation
Elenchezhian, Muthu Ram Prabhu; Das, Partha Pratim; Rahman, Minhazur; Vadlamudi, Vamsee; Raihan, Rassel; and Reifsnider, Kenneth, "Stiffness Degradation in Fatigue Life of Composites using Dielectric State Variables" (2021). Institute of Predictive Performance Methodologies (IPPM-UTARI). 7.
https://mavmatrix.uta.edu/utari_ippm/7