Application of the time-temperature superposition principle to the mechanical characterization of elastomeric adhesives for crash simulation purposes

Rauh, Andrea; Hinterhölzl, Roland; Drechsler, Klaus

doi:10.1140/epjst/e2012-01582-6

Cited by 8 publications

(2 citation statements)

References 13 publications

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“…The free volume is constant up to T g and then increases linearly with increasing temperature. Equation (2) has been validated with higher strain rates than typical experimental test rates [24,25]. But the strain rates were still much lower than typical MD simulation rates.…”

Section: Effects Of Temperature and Strain Rate On The Young's Modulusmentioning

confidence: 99%

Effects of temperature and strain rate on the deformation of amorphous polyethylene: a comparison between molecular dynamics simulations and experimental results

Sahputra

Echtermeyer

2013

Modelling Simul. Mater. Sci. Eng.

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Molecular dynamics simulations are used to investigate the effects of temperature and strain rate on the deformation of amorphous polyethylene. The simulations predict the effects of temperature and strain rate on the stress-strain responses, Young's modulus and Poisson's ratio similar to those observed in laboratory experiments performed by other researchers. The time-temperature superposition principle is applied to the Young's modulus and Poisson's ratio to form a master curve to address the discrepancies in strain rates between the simulations and the experiments. Differences in the numbers of monomers and chains, the degree of crystallinity and molecular orientation lead to discrepancies in the Young's modulus and Poisson's ratio between simulations and experiments.

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Section: Effects Of Temperature and Strain Rate On The Young's Modulusmentioning

confidence: 99%

Effects of temperature and strain rate on the deformation of amorphous polyethylene: a comparison between molecular dynamics simulations and experimental results

Sahputra

Echtermeyer

2013

Modelling Simul. Mater. Sci. Eng.

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“…For obtaining the shift factors using time‐temperature superposition principle, activation energy is assumed to be constant for the considered temperature range. The activation energy data was substituted in the following expression, called the Arrhenius relationship to get the temperature shift factor

\log a_{T} = \frac{Δ H}{R} ((), \frac{1}{T} - \frac{1}{T_{ref}}) \log e

where T denotes the actual test temperature and T ref is a particular reference temperature for which master creep is to be plotted.…”

Section: Resultsmentioning

confidence: 99%

Effects of carbon nanotube/polymer interfacial bonding on the long‐term creep performance of nanophased glass fiber/epoxy composites

et al. 2019

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This article is focused on prediction of the long‐term creep performance of glass fiber/epoxy (GE) composites reinforced with pristine carbon nanotube (CNT) and functionalized carbon nanotube (FCNT). 0.1 wt% of CNT and FCNT are added to GE composites to fabricate CNT‐GE and FCNT‐GE composite laminates, respectively. Flexural tests were carried out at room temperature (RT) and 120°C to assess the effect of environment temperature on the flexural properties of the aforesaid materials. FCNT‐GE showed highest improvement in flexural properties at RT followed by CNT‐GE composite and control GE composite, due to better stress transfer with strong chemical interfacial bonding. By using accelerated deformation at elevated temperature and time‐temperature superposition principle, long‐term creep behavior of GE, CNT‐GE, and FCNT‐GE composites at various reference temperatures (30°C, 60°C, 90°C, and 110°C) has been anticipated. Positive reinforcement efficiency is noted up to ~1010.5 and ~1012.5 years for CNT‐GE and FCNT‐GE, respectively at reference temperature of 30°C, following which it neutralized and moderately became negative. However, at higher temperature this time period is reduced abruptly due to unfavorable thermal stress generation at the CNT/polymer interface. Evaluation of thermomechanical properties were also carried out using dynamic mechanical analysis. Differential scanning calorimetry was used to investigate the variation in glass transition temperature due to CNT/FCNT addition to GE composite. Fractographic study was also carried out to know the mode of failure for CNT‐GE and FCNT‐GE composite flexural tested at room temperature.

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The effect of marine ageing on the mechanical properties of a structural adhesive

Souto-Silvar,

Álvarez-García,

Díaz-Díaz

et al. 2023

Mech Time-Depend Mater

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Application of the time-temperature superposition principle to the mechanical characterization of elastomeric adhesives for crash simulation purposes

Cited by 8 publications

References 13 publications

Effects of temperature and strain rate on the deformation of amorphous polyethylene: a comparison between molecular dynamics simulations and experimental results

Effects of temperature and strain rate on the deformation of amorphous polyethylene: a comparison between molecular dynamics simulations and experimental results

Effects of carbon nanotube/polymer interfacial bonding on the long‐term creep performance of nanophased glass fiber/epoxy composites

The effect of marine ageing on the mechanical properties of a structural adhesive

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