Towards the Estimation of Temperature Dependent Concrete Tensile Strength

2022 ◽  
Author(s):  
Johann Eduard van der Merwe
Keyword(s):  
Tensile Strength ◽  
Temperature Dependent

Theoretical modeling of the temperature dependent tensile strength for particulate-polymer composites

2019 ◽  
Vol 184 ◽  
pp. 107881 ◽  
Author(s):  
Ying Li ◽  
Weiguo Li ◽  
Xi Lin ◽  
Mengqing Yang ◽  
Ziyuan Zhao ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Polymer Composites ◽  
Theoretical Modeling ◽  
Temperature Dependent

scholarly journals The effect of temperature on fatigue strength and damage of FRP composite laminates

2021 ◽  
Author(s):  
Hossein Mivehchi
Keyword(s):  
Tensile Strength ◽  
Fatigue Strength ◽  
Ultimate Tensile Strength ◽  
Fatigue Damage ◽  
Composite Laminates ◽  
Damage Model ◽  
Effect Of Temperature ◽  
Temperature Dependent ◽  
Frp Composites ◽  
Frp Composite

The present study intends to investigate the effect of temperature on cumulative fatigue damage of laminated fibre-reinforced polymer (FRP) composites. The effect of temperature on fatigue damage is formulated based on a previously proposed residual stiffness fatigue damage model. The fatigue strength of FRP composite laminates is also formulated to have temperature dependent parameters. The research work is divided into three main parts; the first part reviews the fatigue damage mechanism is fibre-reinforced composites based on stiffness degradation. The recent residual stiffness of Varvani-Shirazi was used as the backbone structure of damage analysis in this thesis. This model is capable of damage assessment while the effects of maximum stress, stress ratio and fibre orientation of FRP composites were recognized. The Varvani-Shirazi damage model was further developed to assess fatigue damage of FRP composites at various temperatures (T). Inputs of the damage model are temperature dependent parameters including Young's modulus (E), ultimate tensile strength(ðult) and fatigue life (Nf). As the next part of the proposed analysis, the temperature dependency of each parameter is formulated, and the relations of E-T and ðult-T are substituted in the Varvani-Shirazi fatigue model. Finally, all terms and equations are evaluated with the experimental data available in the literature. Six sets fatigue data were used in this thesis to evaluate fatigue of FRP specimens. The predicted results were found to be in good agreement with the experimentally obtained data. The proposed fatigue damage model was found promising to predict the fatigue damage of unidirectional (UD) and women FRP composites at different temperatures. Temperature dependant parameters of Young's modulus, ultimate tensile strength, and S-N diagram were also found to be responsive when used of UD, cross-ply, and quasi-isotropic FRP laminates.

Non-water dyeing process of reactive dyes in two organic solvents with temperature-dependent miscibility

2019 ◽  
Vol 89 (18) ◽  
pp. 3882-3889 ◽  
Author(s):  
Yong Deng ◽  
Man Xu ◽  
Yugao Zhang ◽  
Guofu Zhou ◽  
Nan Li ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Energy Saving ◽  
Organic Solvents ◽  
Room Temperature ◽  
Reactive Dyes ◽  
Physical Property ◽  
Cotton Yarn ◽  
Temperature Dependent ◽  
Dyeing Process ◽  
Unique Physical Property

In this paper, a non-water dyeing process using two organic solvents with temperature-dependent miscibility was developed. Fixation of three conventional reactive dyes on cotton yarn could reach 97% using one dyeing bath consisting of two solvents. Only one washing step at room temperature was needed to get satisfactory fastness after the fixation process. In particular, the two selected organic solvents could interconvert from immiscible to miscible when the temperature interchanged from 30 to 90℃. This unique physical property makes the separation and recycling processes of organic solvents extremely easy and energy saving. A 1 kg yarn package was dyed using this dyeing process: the color deviation (△E) of the inner and outer yarns was less than 1.0 and the tensile strength decreased by 8.5–18.0%. The results show that this dyeing process is extremely promising.

Modeling of the temperature-dependent ideal tensile strength of solids

2014 ◽  
Vol 89 (8) ◽  
pp. 085803 ◽  
Author(s):  
Tianbao Cheng ◽  
Weiguo Li ◽  
Daining Fang
Keyword(s):  
Tensile Strength ◽  
Temperature Dependent

scholarly journals The effect of temperature on fatigue strength and damage of FRP composite laminates

2021 ◽  
Author(s):  
Hossein Mivehchi
Keyword(s):  
Tensile Strength ◽  
Fatigue Strength ◽  
Ultimate Tensile Strength ◽  
Fatigue Damage ◽  
Composite Laminates ◽  
Damage Model ◽  
Effect Of Temperature ◽  
Temperature Dependent ◽  
Frp Composites ◽  
Frp Composite

The present study intends to investigate the effect of temperature on cumulative fatigue damage of laminated fibre-reinforced polymer (FRP) composites. The effect of temperature on fatigue damage is formulated based on a previously proposed residual stiffness fatigue damage model. The fatigue strength of FRP composite laminates is also formulated to have temperature dependent parameters. The research work is divided into three main parts; the first part reviews the fatigue damage mechanism is fibre-reinforced composites based on stiffness degradation. The recent residual stiffness of Varvani-Shirazi was used as the backbone structure of damage analysis in this thesis. This model is capable of damage assessment while the effects of maximum stress, stress ratio and fibre orientation of FRP composites were recognized. The Varvani-Shirazi damage model was further developed to assess fatigue damage of FRP composites at various temperatures (T). Inputs of the damage model are temperature dependent parameters including Young's modulus (E), ultimate tensile strength(ðult) and fatigue life (Nf). As the next part of the proposed analysis, the temperature dependency of each parameter is formulated, and the relations of E-T and ðult-T are substituted in the Varvani-Shirazi fatigue model. Finally, all terms and equations are evaluated with the experimental data available in the literature. Six sets fatigue data were used in this thesis to evaluate fatigue of FRP specimens. The predicted results were found to be in good agreement with the experimentally obtained data. The proposed fatigue damage model was found promising to predict the fatigue damage of unidirectional (UD) and women FRP composites at different temperatures. Temperature dependant parameters of Young's modulus, ultimate tensile strength, and S-N diagram were also found to be responsive when used of UD, cross-ply, and quasi-isotropic FRP laminates.

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