Measurement of thermal strains during compressive fragmentation in single-fibre composites by Raman spectroscopy

Jonathan R. Wood; Yanling Huang; Robert J. Young; Gad Marom

doi:10.1016/0266-3538(95)00082-8

Measurement of thermal strains during compressive fragmentation in single-fibre composites by Raman spectroscopy

Jonathan R. Wood^*, Yanling Huang, Robert J. Young, Gad Marom

^*Corresponding author for this work

Institute of Chemistry

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

Raman spectroscopy has been used to evaluate thermal strains before, during and after the manufacture of single-fibre composites. The fragmentation of high-modulus carbon fibres embedded in polycarbonate is found to relieve strains in the fibres although the strain profile along the length is unaffected by the breaks, in agreement with a recently proposed compressive fragmentation model. Deviations from linearity on a weakest link theorem/Weibull statistics plot are considered to reflect both this strain-relieving mechanism and the efficiency of stress transfer across the interface. The lower residual strain in PTFE coated fibres with respect to the unmodified fibres is explained by this competitive mechanism.

Original language	English
Pages (from-to)	223-229
Number of pages	7
Journal	Composites Science and Technology
Volume	55
Issue number	3
DOIs	https://doi.org/10.1016/0266-3538(95)00082-8
State	Published - 1995

Keywords

compression
fragmentation
microcomposite
Raman spectroscopy
thermal strain

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10.1016/0266-3538(95)00082-8

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title = "Measurement of thermal strains during compressive fragmentation in single-fibre composites by Raman spectroscopy",

abstract = "Raman spectroscopy has been used to evaluate thermal strains before, during and after the manufacture of single-fibre composites. The fragmentation of high-modulus carbon fibres embedded in polycarbonate is found to relieve strains in the fibres although the strain profile along the length is unaffected by the breaks, in agreement with a recently proposed compressive fragmentation model. Deviations from linearity on a weakest link theorem/Weibull statistics plot are considered to reflect both this strain-relieving mechanism and the efficiency of stress transfer across the interface. The lower residual strain in PTFE coated fibres with respect to the unmodified fibres is explained by this competitive mechanism.",

keywords = "compression, fragmentation, microcomposite, Raman spectroscopy, thermal strain",

author = "Wood, {Jonathan R.} and Yanling Huang and Young, {Robert J.} and Gad Marom",

year = "1995",

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AU - Wood, Jonathan R.

AU - Huang, Yanling

AU - Young, Robert J.

AU - Marom, Gad

PY - 1995

Y1 - 1995

N2 - Raman spectroscopy has been used to evaluate thermal strains before, during and after the manufacture of single-fibre composites. The fragmentation of high-modulus carbon fibres embedded in polycarbonate is found to relieve strains in the fibres although the strain profile along the length is unaffected by the breaks, in agreement with a recently proposed compressive fragmentation model. Deviations from linearity on a weakest link theorem/Weibull statistics plot are considered to reflect both this strain-relieving mechanism and the efficiency of stress transfer across the interface. The lower residual strain in PTFE coated fibres with respect to the unmodified fibres is explained by this competitive mechanism.

AB - Raman spectroscopy has been used to evaluate thermal strains before, during and after the manufacture of single-fibre composites. The fragmentation of high-modulus carbon fibres embedded in polycarbonate is found to relieve strains in the fibres although the strain profile along the length is unaffected by the breaks, in agreement with a recently proposed compressive fragmentation model. Deviations from linearity on a weakest link theorem/Weibull statistics plot are considered to reflect both this strain-relieving mechanism and the efficiency of stress transfer across the interface. The lower residual strain in PTFE coated fibres with respect to the unmodified fibres is explained by this competitive mechanism.

KW - compression

KW - fragmentation

KW - microcomposite

KW - Raman spectroscopy

KW - thermal strain

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JO - Composites Science and Technology

JF - Composites Science and Technology

IS - 3

ER -

Measurement of thermal strains during compressive fragmentation in single-fibre composites by Raman spectroscopy

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Keywords

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