Influence of residual thermal stress in carbon fiber-reinforced thermoplastic composites on interfacial fracture toughness evaluated by cyclic single-fiber push-out tests

Greisel, Michael; Jäger, Jan; Moosburger‐Will, Judith; Sause, Markus G. R.; Mueller, Wolfgang M.; Horn, S.

doi:10.1016/j.compositesa.2014.07.010

Cited by 45 publications

(47 citation statements)

References 25 publications

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“…In recent years, some approaches used fracture mechanics concept as hybrid approaches [50,58] or in their pure form [76] to describe damage progression within laminates. Similar to the strength based failure criteria, there is still room for improvement of the experimental methods to determine microscopic fracture toughness values for various load conditions [15,77,78].…”

Section: Quasi-static Failure Including Growth Of Damage Damage Mechmentioning

confidence: 99%

“…Due to production process at elevated temperatures, most fiber-reinforced polymers are subject to a residual thermal stress between fibers and matrix. Here, the matrix material between two adjacent fibers is exposed to a geometrically induced stress concentration and therefore acts as weakest link when loading the material transverse to the fiber axis [5,[13][14][15].…”

Section: Microscalementioning

confidence: 99%

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Failure of Fiber-Reinforced Composites

Sause

2016

In Situ Monitoring of Fiber-Reinforced Composites

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Section: Quasi-static Failure Including Growth Of Damage Damage Mechmentioning

confidence: 99%

Section: Microscalementioning

confidence: 99%

Failure of Fiber-Reinforced Composites

Sause

2016

In Situ Monitoring of Fiber-Reinforced Composites

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“…The nanoindenter approaches the sample's surface and the indenter tip pushes out the single filaments into the cavity. The force applied for the push-out is measured as a function of displacement of the indenter tip [53]. …”

Section: Single Filament Testsmentioning

confidence: 99%

Essential Properties of Fibres for Composite Applications

Steinmann

Saelhoff

2016

Textile Science and Clothing Technology

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In this chapter, essential properties of fibres required for fabricating good performance composites are presented. Fundamental aspects of these properties and principles of their characterization techniques are discussed. Firstly, the geometrical aspects of fibres (for short and endless fibres) are described. The second part deals with the different types of structures in fibres with respect to molecular orientation mostly responsible for anisotropy of fibres. In the third part, the mechanical properties (especially tensile properties) and failure mechanisms for different types of fibres are discussed and correlated to the structure of the fibres. The following part is concerned with the surface of fibres, which is responsible for the interaction of the fibres with the matrix material in composites and has a large influence on the wetting behavior and adhesion to matrix materials. In the last parts, further physical properties (heat capacity, thermal conductivity, thermomechanical properties and electrical conductivity) and the durability of fibres are described.

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“…For some high-performance polymers, such as polyphenylene sulphide (PPS) and polyether ether ketone (PEEK), the temperature drop is *300°C. This large change in temperature imposes a large thermal expansion mismatch between fibre and thermoplastic matrix, yielding sometimes substantial residual thermal stresses at their interfaces [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Effects of thermal residual stress on interfacial properties of polyphenylene sulphide/carbon fibre (PPS/CF) composite by microbond test

Wang

Xu²,

Liu

et al. 2015

J Mater Sci

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As a result of manufacturing processes, thermal residual stresses often occur in fibre-reinforced polymer composites and affect the fibre/matrix interface properties, e.g. interfacial shear strength (IFSS), which is commonly evaluated by the microbond test. In thermoplastic matrices, thermal residual stresses can be relieved by annealing. In this study, to examine the effect of thermal residual stress on IFSS, microbond tests on both air-quenched (control) and annealed polyphenylene sulphide/carbon fibre samples are conducted. Comparing the pull-out results of the control to the annealed samples subjected to six different annealing temperatures between 80 and 230°C, it is found that the thermal residual stresses in the fibre axial and radial directions are reduced progressively below and can be neglected above 120°C. Thermal residual stresses in the fibre direction can be calculated to explain the microbond test results and construct a master curve for the IFSS. Postdebond frictional shear stresses can also be analysed in terms of the calculated fibre radial thermal residual stresses and debonded fibre morphologies.

show abstract

Influence of residual thermal stress in carbon fiber-reinforced thermoplastic composites on interfacial fracture toughness evaluated by cyclic single-fiber push-out tests

Cited by 45 publications

References 25 publications

Failure of Fiber-Reinforced Composites

Failure of Fiber-Reinforced Composites

Essential Properties of Fibres for Composite Applications

Effects of thermal residual stress on interfacial properties of polyphenylene sulphide/carbon fibre (PPS/CF) composite by microbond test

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