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Article
Monitoring Ambient-Temperature Aging of a Carbon-Fiber/Epoxy Composite Prepreg with Photoacoustic Spectroscopy
Composites Part A: Applied Science and Manufacturing
  • Roger W. Jones, Iowa State University
  • Yeow Ng, Wichita State University
  • John F. McClelland, Iowa State University
Document Type
Article
Publication Date
6-1-2008
DOI
10.1016/j.compositesa.2008.03.015
Abstract

Carbon-fiber/epoxy prepreg sheet was aged at room temperature under low humidity for up to 60 days. At various times during the aging, intact prepreg specimens were analyzed by infrared photoacoustic spectroscopy and laminates were made from the prepreg and tested for interlaminar shear strength. Over the 60 days, the spectra showed small but quantitative changes, but the shear strengths decreased by less than their uncertainty. Partial least squares modeling of the spectra allowed both the prepreg age and the shear strength to be determined from the prepreg spectra. The standard errors of cross validation for the partial least squares models were 1.47 days for prepreg age and 1.4 MPa for interlaminar shear strength of the resulting laminates.

Comments

NOTICE: this is the author’s version of a work that was accepted for publication in Composites Part A: Applied Science and Manufacturing. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Composites Part A: Applied Science and Manufacturing 39 (2008): 965, doi:10.1016/j.compositesa.2008.03.015.

Copyright Owner
Elsevier Ltd.
Language
en
Date Available
2014-11-24
File Format
application/pdf
Citation Information
Roger W. Jones, Yeow Ng and John F. McClelland. "Monitoring Ambient-Temperature Aging of a Carbon-Fiber/Epoxy Composite Prepreg with Photoacoustic Spectroscopy" Composites Part A: Applied Science and Manufacturing Vol. 39 Iss. 6 (2008) p. 965 - 971
Available at: http://works.bepress.com/roger_jones/21/