In situ SEM deformation behavior observation at CFRP fiber-matrix interface

Y. Wachi, J. Koyanagi, Shuichi Arikawa, S. Yoneyama

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

This paper studies deformation of CFRP at microscopic area and observing technique. Tensile test is carried out for CFRP specimen and digital image correlation (DIC) method is used to observe deformation of microscopic area, especially around its fiber interface. CFRP specimen is loaded by tensile testing machine for investigating deformation around vertical section of fiber. Diameter of carbon fiber used which is mainly interested in the specimen is micro scale, therefore scanning electron microscope (SEM) is used to gain high magnification and resolution pictures as they deforms. To achieve this in situ experiment, testing machine which can be used in SEM is developed. The essential to achieve DIC is selection of random pattern used to follow up change of the area, which greatly influences accuracy of result. Colloidal silica and the other particles are utilized for random pattern with adjustment of concentration. The pattern must be seen clearly and small enough compared to fiber vertical section. Through this research, examination of deformation observation at microscopic area and consideration of starting and fracturing procedure of CFRP are performed.

Original languageEnglish
Title of host publicationComposite, Hybrid, and Multifunctional Materials - Proceedings of the 2014 Annual Conference on Experimental and Applied Mechanics
EditorsGyaneshwar Tandon
PublisherSpringer New York LLC
Pages67-73
Number of pages7
ISBN (Print)9783319069913
DOIs
Publication statusPublished - 1 Jan 2015
EventAnnual Conference on Experimental and Applied Mechanics, 2014 - Greenville, United States
Duration: 2 Jun 20145 Jun 2014

Publication series

NameConference Proceedings of the Society for Experimental Mechanics Series
Volume4B
ISSN (Print)2191-5644
ISSN (Electronic)2191-5652

Conference

ConferenceAnnual Conference on Experimental and Applied Mechanics, 2014
CountryUnited States
CityGreenville
Period2/06/145/06/14

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Keywords

  • CFRP
  • DIC
  • High magnification
  • Scanning electron microscope
  • Uniaxial tension experiment

Cite this

Wachi, Y., Koyanagi, J., Arikawa, S., & Yoneyama, S. (2015). In situ SEM deformation behavior observation at CFRP fiber-matrix interface. In G. Tandon (Ed.), Composite, Hybrid, and Multifunctional Materials - Proceedings of the 2014 Annual Conference on Experimental and Applied Mechanics (pp. 67-73). (Conference Proceedings of the Society for Experimental Mechanics Series; Vol. 4B). Springer New York LLC. https://doi.org/10.1007/978-3-319-06992-0_9