Tensile behavior of thermoplastic composites including temperature, moisture, and hygrothermal effects

Eftekhari, Mohammadreza; Fatemi, Ali

doi:10.1016/j.polymertesting.2016.03.011

Cited by 114 publications

(75 citation statements)

References 27 publications

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“…(a) for R = 0.1 loading condition, with similar behaviour at R = 0.3. The main reason for incorporating talc in polymers is to increase the stiffness . However incorporation of talc reduces fatigue strength because of creation of voids in polymer matrix, which are suitable regions for initiation and growth of fatigue cracks .…”

Section: The Effect Of Talc and Short Glass Fibre Additions On Fatigusupporting

confidence: 84%

“…PA66 specimens were dried for 24 h at 80 °C and PPE/PS specimens were dried for 4 h at 100 °C in a vacuum chamber, prior to testing. As PP‐T and PP‐G are less prone to absorbing moisture compared with PA66 and PPE/PS, they were dried for 4 h at 80 °C in a regular chamber. All the specimens were kept in a desiccator prior to testing.…”

Section: Experimental Programmementioning

confidence: 99%

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Fatigue behaviour and modelling of talc‐filled and short glass fibre reinforced thermoplastics, including temperature and mean stress effects

Eftekhari

Fatemi

2016

Fatigue Fract Eng Mat Struct

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Effects of temperature and mean stress on fatigue behaviour of talc‐filled polypropylene (PP‐T) and short glass fibre reinforced polypropylene (PP‐G), polyamide‐66 (PA66), and a blend of polyphenylene ether and polystyrene (PPE/PS) were investigated. Load‐controlled fatigue tests were conducted under positive stress ratios (R = 0.1 and 0.3) and at several temperatures (T = 23, 85 and 120 °C). Larson–Miller parameter was used and a shift factor of Arrhenius type was developed to correlate fatigue data at various temperatures. Effect of mean stress on fatigue life was significant for some of the studied materials; however, for the PPE/PS blend no effect of mean stress was observed. Modified Goodman and Walker mean stress equations were evaluated for their ability to correlate mean stress data. A general fatigue life prediction model was also used to account for the effects of mean stress, temperature, anisotropy and frequency.

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Section: The Effect Of Talc and Short Glass Fibre Additions On Fatigusupporting

confidence: 84%

Section: Experimental Programmementioning

confidence: 99%

Fatigue behaviour and modelling of talc‐filled and short glass fibre reinforced thermoplastics, including temperature and mean stress effects

Eftekhari

Fatemi

2016

Fatigue Fract Eng Mat Struct

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“…It was noted that two different slopes were identified for variations of strength and stiffness below and above the glass transition point of 30 wt% shorteglass-fibre-reinforced polyamide-6.6 [31]. Near T g , a drastic reduction in tensile strength and elastic modulus was found [32].…”

Section: Uniaxial Tension Testmentioning

confidence: 97%

Temperature-dependent mechanical behaviour of PMMA: Experimental analysis and modelling

2017

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b s t r a c tAn experimental study of temperature-dependent mechanical behaviour of Poly-methyl methacrylate (PMMA) was performed at a range of temperatures (20 C, 40 C, 60 C and 80 C) below its glass transition point (108 C) under uniaxial tension and three-point bending loading conditions. This study was accompanied by simulations aimed at identification of material parameters for two different constitutive material models. Experimental flow curves obtained for PMMA were used in elasto-plastic analysis, while a sim-flow optimization tool was employed for a two-layer viscoplasticity model. The temperature increase significantly affected mechanical behaviour of PMMA, with quasi-brittle fracture at room temperature and super-plastic behaviour (ε>110%) at 80 C. The two-layer viscoplasticity material model was found to agree better with the experimental data obtained for uniaxial tension than the elasto-plastic description.

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“…Values of ε 0 can be estimated using RembergeOsgood equation, which was used in Refs. [13,36,37] to model the tensile stress-strain behavior of the studied materials. In order to find the variation of constant m with stress, the following equation, which was suggested by Hadid et al [28], was used:…”

Section: Creep Strain-time Behavior and Predictionsmentioning

confidence: 99%

Creep behavior and modeling of neat, talc-filled, and short glass fiber reinforced thermoplastics

Eftekhari

Fatemi

2016

Composites Part B: Engineering

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Tensile behavior of thermoplastic composites including temperature, moisture, and hygrothermal effects

Cited by 114 publications

References 27 publications

Fatigue behaviour and modelling of talc‐filled and short glass fibre reinforced thermoplastics, including temperature and mean stress effects

Fatigue behaviour and modelling of talc‐filled and short glass fibre reinforced thermoplastics, including temperature and mean stress effects

Temperature-dependent mechanical behaviour of PMMA: Experimental analysis and modelling

Creep behavior and modeling of neat, talc-filled, and short glass fiber reinforced thermoplastics

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