Modeling the temperature and test rate dependent fracture strength of zirconia and alumina single crystal fibers

Shao, Jiaxing; Li, Weiguo; Wang, Ruzhuan; Deng, Yong; Ma, Jianzuo; Zhang, Yangyuan; Lai, Yanhao

doi:10.1016/j.compositesb.2017.09.022

Cited by 6 publications

(3 citation statements)

References 36 publications

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“…Therefore, the increased extent of cross‐linking sizing agents benefitted in improving tensile strength of GFs. According to the Griffith theory, stress concentrated at cracks under external loads, and expansion of cracks resulted in fiber damage 53,54 . The improved tensile strength and higher Weibull modulus might be attributed to three factors: (1) Sizing agent could heal GF surface defects and effectively reduced stress concentration through filling and blunting defect tips 51,55 ; (2) According to Table 1, the thickness of sizing agent increased with the achievement of cross‐linking networks.…”

Section: Resultsmentioning

confidence: 99%

“…According to the Griffith theory, stress concentrated at cracks under external loads, and expansion of cracks resulted in fiber damage. 53,54 The improved tensile strength and higher Weibull modulus might be attributed to three factors: (1) Sizing agent could heal GF surface defects and effectively reduced stress concentration through filling and blunting defect tips 51,55 ; (2) According to Table 1, the thickness of sizing agent increased with the achievement of cross-linking networks. The thicker cross-linking modified sizing agent played a role as surface protection, which acts as buffering effect to improve GFs tensile strength 56 ; (3) Sizing agent would create new surface defects due to its non-uniform structure on surface of fibers.…”

Section: Enhanced Tensile Strength Of Gf Monofilamentmentioning

confidence: 99%

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Glass fiber/epoxy composites with improved interfacial adhesion by using cross‐linking sizing agent

Wang,

Zhang,

Han

et al. 2023

Polymer Composites

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Glass fibers (GFs) are frequently employed as reinforcement fibers for polymer resins such as epoxy and polyester. The mechanical behaviors of GFs polymer composites are nevertheless constrained by weak interfacial adhesion between polymer matrix and GFs. Herein, we invented a cross‐linking modified sizing agent using polyethyleneimine and bisphenol A epoxy emulsion, and studied the effect of cross‐linking extent on GF surface characteristics and GF/epoxy interfacial adhesion. The treatment of GFs with cross‐linking modified sizing agent facilitated the formation of interpenetrating polymer networks in composites for strengthening interface interaction. The results show that the modified GFs have a rough surface and improved interfacial adhesion with epoxy matrix. When sizing agents with cross‐linking extent of the 23.0%, the GF/epoxy composites show advanced interfacial shear strength (IFSS) and transverse fiber bundle tension (TFBT) strength. This work demonstrates that the cross‐linking extent of sizing agent could regulate interfacial adhesion, which is a facile and promising strategy in reinforcing glass fiber polymer composites.Highlights Crosslink the sizing agent to enhance GF mechanical properties was reported. GF surface energy was enhanced and thickness of GF/epoxy interphase increased. IFSS and TFBT strength of the GF/resin composites increased by 23.65% and 30.54%, respectively.

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Section: Resultsmentioning

confidence: 99%

Section: Enhanced Tensile Strength Of Gf Monofilamentmentioning

confidence: 99%

Glass fiber/epoxy composites with improved interfacial adhesion by using cross‐linking sizing agent

Wang,

Zhang,

Han

et al. 2023

Polymer Composites

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“…Interfacial residual stress and elastic strain energy are important factors that influence interfacial debonding. [ 14,15 ] Among these, residual radial tensile stress directly contributes to interfacial debonding. Furthermore, the elastic strain energy stored at the interface is proportional to the radial and tangential stress values according to the Lange energy model.…”

Section: Discussionmentioning

confidence: 99%

Influence of New Glass Phase Structure on the Mechanical Properties of Composite Ceramic SiC/Si₃N₄

Wang

Zhou

Liu

2023

Physica Status Solidi (a)

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Though the addition of a second phase is an effective method for toughening silicon nitride (Si3N4) ceramics, certain residual thermal stress is generated at the phase interface. In case of a large value of residual thermal stress, a weak interface forms between the second phase and the matrix material, reducing the strength of the material. Herein, a new type of core–shell structure silicon carbide SiC–glass phase is produced inside the material by adding a presintering process into the traditional SiC–Si3N4 sintering process. The radial and tangential thermal stresses around the core–shell structural SiC–glass phase and SiC particle are compared by using the finite element method. The results indicate that the core–shell structural SiC–glass phase inhibits the interfacial debonding. Compared with the introduction of SiC particle alone, the core–shell structural SiC–glass phase optimizes the mechanical properties of SiC/Si3N4 composite ceramic, with the fracture toughness reduced by 9.6%, the bending strength increased by 12.3%, and the friction coefficient reduced by 8.5% for the SiC/Si3N4 ceramics with SiC content of 5%.

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Temperature dependent fracture toughness of the particulate-reinforced ultra-high-temperature-ceramics considering effects of change in critical flaw size and plastic power

Wang

et al. 2019

Composites Part B: Engineering

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Modeling the temperature and test rate dependent fracture strength of zirconia and alumina single crystal fibers

Cited by 6 publications

References 36 publications

Glass fiber/epoxy composites with improved interfacial adhesion by using cross‐linking sizing agent

Glass fiber/epoxy composites with improved interfacial adhesion by using cross‐linking sizing agent

Influence of New Glass Phase Structure on the Mechanical Properties of Composite Ceramic SiC/Si₃N₄

Temperature dependent fracture toughness of the particulate-reinforced ultra-high-temperature-ceramics considering effects of change in critical flaw size and plastic power

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Modeling the temperature and test rate dependent fracture strength of zirconia and alumina single crystal fibers

Cited by 6 publications

References 36 publications

Glass fiber/epoxy composites with improved interfacial adhesion by using cross‐linking sizing agent

Glass fiber/epoxy composites with improved interfacial adhesion by using cross‐linking sizing agent

Influence of New Glass Phase Structure on the Mechanical Properties of Composite Ceramic SiC/Si3N4

Temperature dependent fracture toughness of the particulate-reinforced ultra-high-temperature-ceramics considering effects of change in critical flaw size and plastic power

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Influence of New Glass Phase Structure on the Mechanical Properties of Composite Ceramic SiC/Si₃N₄