Analysis of Load Transfer Behaviour and Determination of Interfacial Shear Strength in Single-Fibre-Reinforced Titanium Alloys

Matikas, Theodore E.

doi:10.1177/096369350701600504

Cited by 5 publications

(3 citation statements)

References 38 publications

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“…Until recently, measurements of the interfacial strength of pristine fibre/matrix systems have been restricted to indirect measurements via modelling of pushout (Zeng et al 2002), transverse tensioned push-out (Kalton et al 1997) and full-fragmentation (Matikas 2007a(Matikas ,b, 2008 testing. In order to make direct measurements, we developed a modified version of the single fibre fullfragmentation test in which the fragmentation process is examined by synchrotron X-ray diffraction in situ prior to full-fragmentation (Preuss et al 2002).…”

Section: Introductionmentioning

confidence: 99%

Evolution of crack-bridging and crack-tip driving force during the growth of a fatigue crack in a Ti/SiC composite

et al. 2012

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High spatial resolution diffraction and imaging using synchrotron X-rays are combined to monitor the incremental growth of a fatigue crack through the matrix of a Ti-6Al-4V/SCS-6 SiC monofilament metal matrix composite. X-ray tomography is used to quantify the crack opening displacement (COD) and diffraction to measure the crack-tip stress field in each phase, the wear degraded interfacial strengths, as well as the crack face tractions applied by the bridging fibres, at maximum (K max ) and minimum (K min ) loading as a function of crack length. In this way, it has been possible to quantify the crack-tip driving force (the stress intensity range effective at the crack-tip) in three ways: from the COD, the bridging stresses and the crack-tip stress field. The fibre stresses act to prop open the crack at K min and shield the crack at K max such that the change in COD is small over the fatigue cycle. Consequently, the effective stress intensity range at the crack tip remains around 10 MPa √ m as the crack lengthens, as more and more fibres bridge the crack despite the normally applied stress intensity rising to 60 MPa √ m. The implications of the derived fracture mechanics parameters are assessed and the wider potential of X-ray diffraction and imaging for crack-tip microscopy is discussed.

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Section: Introductionmentioning

confidence: 99%

Evolution of crack-bridging and crack-tip driving force during the growth of a fatigue crack in a Ti/SiC composite

et al. 2012

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“…A key parameter that allows prediction of the stress state in the metal inclusion is the pressure exerted by the rollers. In order to validate the model pressure profiles, a pressure measurement system able to record in real-time the contact pressure on the interface between the sandwich sample composite and the rotating cylinders was used (Matikas, 2007). These calendering tests where done setting the nip-gap between rollers at spacing greater than 80% of the original sample thickness to protect the sensors.…”

Section: Experimental Methodsmentioning

confidence: 99%

Calendering of metal/polymer composites: An analytical formulation

Calcagno

Hart

Crone

2016

Mechanics of Materials

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The process of calendering, or cold rolling, is relevant to geologic processes and industrial applications, ranging from food processing to thin film transistor manufacturing. When dissimilar materials are sandwich stacked and then subjected to extrusion-like deformation between rollers, several factors influence the outcome of the product composite. In this work, Newtonian and Power Law models are developed to predict the pressure and stresses experienced by the materials during calendering. Experiments with polymer/metal sandwiched layers inform the parameters used in the models and allow for validation. A parametric analysis is conducted to further explore the influence of material and processing parameters. The pressure profiles predicted by the models are compared to experimental results of the pressure sensor data and the parameters leading to inclusion fracture in the six composite material combinations explored. The Newtonian model is found to have the best correlation with experimental findings.

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“…MPa at 650 o [12] • Timetal-834 + SiC fibers; Shear strength = 500 MPa at RT [13] • Composite system: Al + SiC spherical particles; Normal strength = shear strength = 705 MPa and G IC = G IIC = 0.1234 at RT [14]. Note these values were used in cohesive interface model between material and particles.…”

Section: Debonding Of Ti-wc/co Interfacementioning

confidence: 99%

An ICME Modeling Framework for Titanium/Tungsten-Carbide Metal Matrix Composites

Chen¹,

Barua²,

Hu³

et al. 2023

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This report describes a collaborative project to develop a validated, predictive model for the high temperature mechanical properties of a titanium-matrix, tungsten-carbide/cobaltreinforced metal matrix composite. The modeling approach was to first develop a detailed, microstructural model linking the material structure and the interfacial debonding properties to the effective properties of the material. The project then completed a throughput simulation campaign to generate a large number of simulations for discrete microstructures and different debonding parameters. Finally, the project trained a fast, Gaussian process surrogate model against this simulation database to provide a quick model linking the material compositions, structure, and processing parameters to the resulting material properties. This model was validated against high temperature tensile test data on a few particular composite compositions. The tests validate the model predictions for ultimate tensile strength and uniform elongation/ductility, meaning the final surrogate model can now be used to tune the material composition and processing parameters to identify optimal composite compositions for particular applications.

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Analysis of Load Transfer Behaviour and Determination of Interfacial Shear Strength in Single-Fibre-Reinforced Titanium Alloys

Cited by 5 publications

References 38 publications

Evolution of crack-bridging and crack-tip driving force during the growth of a fatigue crack in a Ti/SiC composite

Evolution of crack-bridging and crack-tip driving force during the growth of a fatigue crack in a Ti/SiC composite

Calendering of metal/polymer composites: An analytical formulation

An ICME Modeling Framework for Titanium/Tungsten-Carbide Metal Matrix Composites

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