Fracture behaviour of glass fibre reinforced polyamide mouldings

Akay, M.; O'Regan, D.F.

doi:10.1016/0142-9418(95)93194-6

Cited by 20 publications

(8 citation statements)

References 6 publications

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“…Longer fibers generally cause a higher fracture toughness. However, in composites with a preferentially transverse fiber direction, longer fibers can give rise to lower toughness (35).…”

Section: Damage Zone Size and Discussionmentioning

confidence: 99%

Notch sensitivity and damage mechanisms of glass mat reinforced polypropylene

Lindhagen

Berglund

1997

Polymer Composites

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Notch sensitivities of two structurally different glass-mat reinforced polypropylene materials (GMT) were investigated. Center hole notches in tensile specimens were used in the tests. The results show that the short fiber material has higher unnotched strength, but also higher notch sensitivity compared to a swirled mat material. Reasons for this are discussed, focusing on microstructural differences. Predictions from four different failure criteria were compared with the experimental notched strength data. The point stress and damage zone criteria were found to give the best descriptions.

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“…Longer fibers generally cause a higher fracture toughness. However, in composites with a preferentially transverse fiber direction, longer fibers can give rise to lower toughness (35).…”

Section: Damage Zone Size and Discussionmentioning

confidence: 99%

Notch sensitivity and damage mechanisms of glass mat reinforced polypropylene

Lindhagen

Berglund

1997

Polymer Composites

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“…For example, Thomason [13] has studied the influence of fiber strength and diameter on the mechanical properties of GF/PA‐6,6. Akay et al [14, 15] have reported the fracture toughness and impact behavior of GF/PA‐6,6. Lévay et al [16] have investigated the effect of testing conditions on the fracture characteristics of GF/PA 6,6.…”

Section: Introductionmentioning

confidence: 99%

Fatigue performance of injection‐molded short e‐glass fiber reinforced polyamide‐6,6. II. Effects of melt temperature and hold pressure

Zhou

Mallick

2010

Polymer Composites

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Tensile and fatigue properties of an injection molded short E-glass fiber reinforced polyamide-6,6 have been studied as a function of two key injection molding parameters, namely melt temperature and hold pressure. It was observed that tensile and fatigue strengths of specimens normal to the flow direction were lower than that in the flow direction, indicating inherent anisotropy caused by injection molding. Tensile and fatigue strengths of specimens with weld line were significantly lower than that without weld lines. For specimens in the flow direction, normal to the flow direction and with weld line, tensile strength and fatigue strength increased with increasing melt temperature as well as increasing hold pressure. The effect of specimen orientation on the tensile and fatigue strengths is explained in terms of the difference in fiber orientation and skin-core morphology of the specimens. POLYM. COMPOS., 32:268-276, 2011. ª

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“…The structural characterization of neat and reinforced PA66 at 7%, 15%, 30% and 50% by mass with GF, respectively, has been investigated by wide angle X-ray scattering (WAXS). Thus, the different diffractograms obtained (Figure 3) confirmed the presence of two diffraction peaks (100) and the doublet (010/110), corresponding to the a triclinic crystal phase of PA66 14,[36][37][38][39] at scattering angles 2y & 20 and 2y & 23 , respectively. These diffractograms were collected for 2y ¼ [5 -40 ].…”

Section: Microstructural Characterizationmentioning

confidence: 58%

Structural study and thermal behavior of composites: Polyamide 66/glass fibers: The reinforcement ratio effect on the kinetics of crystallization

Makhlouf¹,

Layachi

Kouadri³

et al. 2019

Journal of Composite Materials

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The present research aims at studying the kinetics of non-isothermal crystallization of the polyamide 66 matrix and its composites with the presence of a glass fiber load. To achieve that goal, the non-isothermal crystallization of polyamide 66 has been studied by means of DSC. The ratio of tested reinforcement varies from 7% to 50% of glass fiber in mass. The modeling, by the theories of Jeziorny and those of Mo, has allowed us to study the influence of adding this reinforcement, as well as the variation of the rate of cooling, on the kinetics of crystallization of the composites in question, which has been manifested by a remarkable change in the nucleation mechanism of the polyamide 66 matrix. Regarding the reinforcement effect, the incorporation of the glass fibers load into the polyamide 66 matrix has caused the appearance of exothermic peaks in a higher temperature range and that for all the working materials. Finally, the results showed that the Mo model is the most suitable for the study of polyamide 66/glass fiber crystallization kinetics.

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Fracture behaviour of glass fibre reinforced polyamide mouldings

Cited by 20 publications

References 6 publications

Notch sensitivity and damage mechanisms of glass mat reinforced polypropylene

Notch sensitivity and damage mechanisms of glass mat reinforced polypropylene

Fatigue performance of injection‐molded short e‐glass fiber reinforced polyamide‐6,6. II. Effects of melt temperature and hold pressure

Structural study and thermal behavior of composites: Polyamide 66/glass fibers: The reinforcement ratio effect on the kinetics of crystallization

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