Six image phase stepped photoelasticity for the quantification of the stress field around 25μm reinforcing fibres
Source abstract
Abstract
A six image phase stepped photoelastic technique has been applied for the measurement of the interfacial shear stress distribution in the matrix resin along a reinforcing E-glass fibre of ∼25 μm in diameter at its end and at a fibre-break. Contour maps of the isochromatic fringe order and its corresponding isoclinic angle, which are related to the principal stress difference and direction relative to the fibre axis, could be obtained continuously using this photoelastic technique. Thus the actual interfacial shear stress along the fibre can be calculated. Furthermore in the presence of a fibre-break, interfacial debonding and matrix yielding during stress transfer was investigated. The micro-mechanics are shown to differ at a fibre-break compared to a fibre-end.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Mechanical Behavior of Composites · Optical measurement and interference techniques · Advanced Surface Polishing Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (16)
Show source-provided references
1. The mechanical interaction of sapphire whiskers with a birefringent matrix
2. Photo-elastic analysis of fibre-reinforced model composite materials10.1016/S0266-3538(96)00177-7 ↗
3. Measurement of micro stress fields in epoxy matrix around a fibre using phase-stepping automated photoelasticity10.1016/S0266-3538(03)00131-3 ↗
4. Photoelastic analysis of matrix stresses around a high modulus sapphire fibre by means of phase-stepping automated polariscope
5. Photoelastic analysis of matrix stresses around a glass fibre in fragmentation test by means of phase-stepping automated polariscope10.1016/j.compositesa.2004.06.033 ↗
6. Phase-stepping photoelasticity for quantifying the interfacial response in fibre composites at fibre-breaks10.1016/j.msea.2005.08.039 ↗
7. Phase-stepping photoelasticity for the measurement of interfacial shear stress in single fibre composites10.1016/j.compositesa.2005.09.021 ↗
8. Thermal loading of short fibre composites and the induction of residual shear stresses10.1016/j.compositesa.2007.06.012 ↗
9. Towards full field automated photoelastic analysis of complex components10.1111/j.1475-1305.1991.tb00752.x ↗
10. Use of phase stepping with demodulation and fuzzy sets for birefringence measurement10.1016/0143-8166(94)00024-5 ↗
11. Simultaneous observation of phase-stepped images for automated photoelasticity10.1243/0309324981512779 ↗
12. Dally · 1985
13. Two-dimensional strain mapping in model fiber–polymer composites using nanotube Raman sensing10.1016/j.compositesa.2003.07.005 ↗
14. The use of carbon nanotubes to sense matrix stresses around a single glass fiber10.1016/S0266-3538(01)00166-X ↗
15. SWNT composite coatings as a strain sensor on glass fibres in model epoxy composites10.1016/j.compscitech.2008.08.002 ↗
16. Comparing single-walled carbon nanotubes and samarium oxide as strain sensors for model glass-fibre/epoxy composites10.1016/j.compscitech.2009.09.009 ↗