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Journal ArticleDOI

Measurement of surface strains in GRP products

G. D. Scowen
- 01 Aug 1982 - 
- Vol. 18, Iss: 3, pp 99-104
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TLDR
In this paper, a study of anomalous results obtained with electrical resistance strain gauges showed that strains measured at a given load, increased with decreasing gauge length and foil gauge resistance.
Abstract: 
Current work on fibre composite materials required the measurement of surface strains on glass reinforced plastics (GRP) products subjected to static loading. A study undertaken to account for anomalous results obtained with electrical resistance strain gauges showed that strains measured at a given load, increased with decreasing gauge length and foil gauge resistance. Measurement of localised strains using gauges of length up to 25 mm are subject to considerable discrepancy when compared with gauge lengths of less than 13 mm.

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Journal ArticleDOI

Measurement of thermal expansion coefficients of composites using strain gages

F. Lanza di Scalea
- 01 Dec 1998 - 
TL;DR: In this paper, the coefficients of thermal expansion (CTEs) of composite materials using electrical resistance strain gages are derived, accounting for the effects of transverse sensitivity and possible misalignment of the gages.
Journal ArticleDOI

Advances in Strain Gauge Measurement on Composite Materials

Augusto Ajovalasit
- 01 Aug 2011 - 
TL;DR: In this paper, the authors give an overview on the application of strain gauge techniques to the analysis of the strains in composite materials. And they consider the typical topics of the strain gauge technology applied to composites with particular reference to the compensation of thermal output, the measurement of the coefficients of thermal expansion, the determination of strain and stress state, the influence of the misalignment error, the reinforcement effect, determination of the stress intensification factor, analysis of residual stresses by the hole drilling method and the effect of transverse sensitivity on the measurements of strains along the fibres.
Journal ArticleDOI

Strain State Detection in Composite Structures: Review and New Challenges

Maurizio Arena, +1 more
TL;DR: In this article, a state-of-the-art review on strain detection techniques in composite structures is presented, which represented a good opportunity for direct comparison of different novel strain measurement techniques.
Book ChapterDOI

Strain Gauges on Glass Fibre Reinforced Polyester Laminates

S. J. Thompson, +2 more
TL;DR: In this paper, the authors examined the dependence of the measured strain on the following factors: gauge length, gauge resistance, pulsed or constant excitation, and operating power density.