Scaling effect on the tensile properties of [±45/0/±45/0/±45] Polypropylene/Twaron laminates

Mena-Tun, J. L.; Martin-Barrera, C.; González-Chi, P. I.

doi:10.1016/j.polymertesting.2015.02.008

Cited by 4 publications

(3 citation statements)

References 12 publications

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“…In recent years, many experimental studies have been conducted on the mechanical scaling behavior of composites. Most studies have used two main approaches for scaling composites [9,10,11,12,13,14]. The first is ply-level scaling, which involves simply increasing the number of layers for each angular ply orientation.…”

Section: Introductionmentioning

confidence: 99%

Scale Effect on Impact Performance of Unidirectional Glass Fiber Reinforced Epoxy Composite Laminates

Shen

Jiang

2019

Materials

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As a result of the increasing use of glass fiber reinforced plastic (GFRP) composites in engineering fields, the investigation of scale effect on impact performance for this kind of composite is essential for large scale structure design. The effects of scaling on the impact response of simply supported unidirectional GFRP were investigated through drop weight impact (DWI) tests in this study. Impact tests were undertaken over a wide range of energies to generate damages between barely visible and initiated penetration on four scale size GFRP laminates. The main impact responses including impact force, contact duration, displacement, energy absorption and damage area of scaled specimens were normalized to compare with the full-size specimen. It was found that the impact response of large sample with elastic deformation and small area of delamination can be predicted accurately according to a geometrical similar scaling law. Scale effect was found in the damage threshold force and absorbed energy of the laminates when significant internal damage occurs due to the microstructural effect becoming important in resisting impact force and absorbing impact energy. Moreover, the energy partition and effective stiffness were calculated according to the energy balance model to reveal the contribution of different modes of deformations on energy absorption for the GFRP laminates.

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Section: Introductionmentioning

confidence: 99%

Scale Effect on Impact Performance of Unidirectional Glass Fiber Reinforced Epoxy Composite Laminates

Shen

Jiang

2019

Materials

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“…They found that a non-linear spline joint was more effective at resisting fatigue than a straight butt joint that is the most common. Mena-Tun et al [14] studied the scaling effect of changing specimen dimensions on tensile properties. They found that there was no effect on strength or stiffness of the specimens compared to classical lamination theory when the geometric scale of the specimen was changed, but that the fracture process by which they failed was affected.…”

Section: Introductionmentioning

confidence: 99%

Scale and manufacturing effects on tensile strength of marine grade sandwich composite panel joints

Tomlinson

Lopez-Anido

2018

Jnl of Sandwich Structures & Materials

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In this article, scale and manufacturing effects on the tensile strength of marine grade sandwich composite panels and joints are investigated to aid in the fabrication of large modular ship hulls. This is done by researching transverse sandwich composite joint design, experimental tension methods, and scale and manufacturing effects on tensile strength. Three scales are utilized in this investigation of tension characteristics: coupon scale, table-top single panel fabrication scale, and in position mock-up full-size fabrication scale. First, material properties are gathered through industry standard coupon scale fabrication and testing. Next, a single-infusion baseline panel along with two ship hull transverse joint designs are chosen, fabricated, tested, and compared at single panel scale. These tests include individually fabricated hull panels, as well as secondary structural stiffener sandwich composite web panels, and stiffener flange components. The highest performing joint design is then utilized in a mock-up full-size fabrication scale structure. This structure includes both a transverse hull joint, as well as joints in the secondary structural stiffener web and flange. This mock-up fabrication scale component was then cut apart and tested in tension. The novel sandwich composite panel joint tension experimentation methods used indicate the methods studied are reliable for determination of characteristic tensile properties, and that the joints selected are effective. Investigations concerning scale effects comparing baseline fiber failure mode tension results from the coupon scale to the single panel scale, and manufacturing effects comparing joint interlaminar shear failure mode from the single panel scale to the mock-up fabrication scale, show decreased ultimate tensile strength with increased overall part size and manufacturing complexity. These factors, applied to a reference strength to achieve a nominal strength, were found to range from 0.796 to 0.846.

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“…Indeed, small-scale models have the advantages of saving both time and expense. However, it has been found that for some time that a 'size effect' may exist for some composites when performing a mechanical test, which is usually detrimental with increasing size [2]. A number of studies have been undertaken to investigate size effects in the fiber reinforced epoxy composite applied in aerospace and mainly using simple Weibull theory to explain any size effects which requires a large number of specimens [3,4].…”

Section: Introductionmentioning

confidence: 99%

Size Effects in the Impact of Carbon Fiber Reinforced Composite Structures

Shen

2018

KEM

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In this study, target size effects in the low energy impact response of plain CFRP plateswere investigated. It was found that increase the target size leads to a reduction in the maximumimpact force recorded during the test. This is due to the reduction on flexural rigidity of the largerpanels. The experimental results indicated that at energies above the first failure threshold, themaximum impact force does not coincidence with the predicting value. Two mathematical modelswere used to predict the maximum impact force including single degree of freedom (SDOF)spring-mass model and Energy-Balance (E-B) model. The predicting results were then comparedwith the experimental results, and both of the two models show good agreement with theexperimental results in elastic deformation region. In addition, the level of agreement between thepredictions and the experimental results indicate that both models are capable of modelling theimpact response of these CFRP panels at elastic regime.

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Scaling effect on the tensile properties of [±45/0/±45/0/±45] Polypropylene/Twaron laminates

Cited by 4 publications

References 12 publications

Scale Effect on Impact Performance of Unidirectional Glass Fiber Reinforced Epoxy Composite Laminates

Scale Effect on Impact Performance of Unidirectional Glass Fiber Reinforced Epoxy Composite Laminates

Scale and manufacturing effects on tensile strength of marine grade sandwich composite panel joints

Size Effects in the Impact of Carbon Fiber Reinforced Composite Structures

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