Effect of temperature and strain rate on the tensile deformation of polyamide 6

Shan, Gui‐Fang; Yang, Jie; Xie, Bin; Feng, Jianmin; Fu, Qiang

doi:10.1016/j.polymer.2007.03.013

Cited by 68 publications

(35 citation statements)

References 31 publications

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“…The result is a decrease in strength for G/PA-6 upon switching to QSI tests. This relates directly to the rate-dependency of 1: the strength of glass fibres [22] and 2: the flow stress and strain to failure of the PA-6 matrix [7,19]. The QSI test clearly cannot represent LVI for G/PA-6, in contrast to C/E, where the difference is small.…”

Section: Comparing Force-displacement Responsementioning

confidence: 99%

Comparing damage from low-velocity impact and quasi-static indentation in automotive carbon/epoxy and glass/polyamide-6 laminates

et al. 2018

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The results of a low-velocity impact programme on both carbon/epoxy and glass/polyamide-6 composite laminates are compared to the results of quasi-static indentation. Cross-ply and quasiisotropic stacking sequences are impacted and quasi-static indentation tests are performed up to the same maximum displacement. The response of the laminates to both test methods is compared in terms of force-displacement behaviour, dissipated energy and resulting damage. Significant differences between low-velocity impact and quasi-static indentation are found for both material systems. It is therefore concluded that the test methods cannot be interchanged for material characterisation.

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Section: Comparing Force-displacement Responsementioning

confidence: 99%

Comparing damage from low-velocity impact and quasi-static indentation in automotive carbon/epoxy and glass/polyamide-6 laminates

et al. 2018

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“…Figure 1 demonstrates the schematic layout of work-piece and tool. In rigid-viscoplastic model, only the plastic region of deformation was considered and the relation of flow stress-plastic strain at different temperatures of 15, 25, 35, 50, 65, and 80°C and strain rates of 0.33 × 10 −3 , 1.67 × 10 −3 , 3.33 × 10 −3 , and 1.67 × 10 −2 s −1 were interpolated in linear space (Shan et al, 2007). The stress-strain diagrams of nylon 6 are illustrated in Figure 2.…”

Section: Materials Model Boundary Conditions and Process Parametersmentioning

confidence: 99%

RETRACTED ARTICLE: Finite element simulation of material flow in friction stir process of nylon 6 and nylon 6/MWCNTs composite

Zinati

2015

Cogent Engineering

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In the current study, a numerical model based on Lagrangian incremental formulation was developed for friction stir process (FSP) of nylon 6 and nylon 6/ multiwalled carbon nanotube (MWCNT) composite to investigate the thermomechanical behavior of them (e.g. temperature, effective plastic strain distribution, material flow, and material velocity). For this purpose, FSP was used to disperse the MWCNTs among the polymer matrix of nylon 6, homogenously. The X-ray diffraction and scanning electron microscopy were used to investigate the properties of fabricated nanocomposite. The obtained results were then used to verify the objectives of numerical model. According to the results, the MWCNTs are separated from each other while passing the tool-pin due to high plastic strain applied on them and greater amount of the material accumulates in the AS of stirred zone after passing the tool-pin. Also, MWCNTs were homogeneously and straightly dispersed throughout the nylon 6. The straight and non-curved dispersion of MWCNTs results in growth of its reinforcement capability.

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“…The maximum stress increased with increasing loading rate. Similar results for the compressive [5] and tensile [5][6][7][8] behavior of the pure polymer under dynamic loading were investigated. Also the tensile strength of short and long glass fiber reinforced polyamide was found to increase with strain rate [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 53%

Characterization of unidirectional carbon fiber reinforced polyamide-6 thermoplastic composite under longitudinal compression loading at high strain rate

Ploeckl¹,

Kühn²,

Koêrber³

2015

EPJ Web of Conferences

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Abstract. In the presented work, an experimental investigation has been performed to characterize the strain rate dependency of unidirectional carbon fiber reinforced polyamide-6 composite for longitudinal compression loading. An end-loaded compression specimen geometry, suitable for contactless optical strain measurement via digital image correlation and dynamic loading in a split-Hopkinson pressure bar, was developed. For the dynamic experiments at a constant strain rate of 100 s −1 a modified version of the Dynamic Compression Fixture, developed by Koerber and Camanho [Koerber and Camanho, Composites Part A, 42, 462-470, 2011] was used. The results were compared with quasi-static test results at a strain rate of 3 · 10 −4 s −1 using the same specimen geometry. It was found that the longitudinal compressive strength increased by 61% compared to the strength value obtained from the quasi-static tests.

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Effect of temperature and strain rate on the tensile deformation of polyamide 6

Cited by 68 publications

References 31 publications

Comparing damage from low-velocity impact and quasi-static indentation in automotive carbon/epoxy and glass/polyamide-6 laminates

Comparing damage from low-velocity impact and quasi-static indentation in automotive carbon/epoxy and glass/polyamide-6 laminates

RETRACTED ARTICLE: Finite element simulation of material flow in friction stir process of nylon 6 and nylon 6/MWCNTs composite

Characterization of unidirectional carbon fiber reinforced polyamide-6 thermoplastic composite under longitudinal compression loading at high strain rate

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