Size and scale effects in composites: III. Woven-roving laminates

Sutherland, L.S.; Shenoi, R.A.; Lewis, S. M.

doi:10.1016/s0266-3538(98)00106-7

Cited by 27 publications

(17 citation statements)

References 2 publications

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“…Judging from the role of fiber at 90°di-rection in woven system [9,11], it is obvious that the group which exhibit less 90°f ibers subsequently result in better mechanical properties. However, the study by Sutherland [13] on the flexural properties of woven fabric laminates shows that the presence of greater number of warp or 0°leads to a reduction in strength. This is because in the fabric system, the distortions in the orthogonal structure during the action of laminating by hand is commonly occurred.…”

Section: Woven Propertiesmentioning

confidence: 99%

Effect of Prepreg Geometry on the Prepreg and Plain Weave Composite Properties

Mariatti

Nasir

Ismail

2002

Journal of Reinforced Plastics and Composites

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Studies on the physical and mechanical properties of the different continuous fiber impregnated thermoplastic composite (COFIT) prepreg geometry such as width and thickness were carried out. The effect of using these different types of prepreg geometries in the making of a woven composite system were examined too. As a result of the pultrusion type prepregging system which is a prototype machine, three types of prepregs based on width and thickness can be classified. The correlation of the prepreg geometry with the end properties of these three prepreg systems was analyzed. It was found that the properties of the prepreg are governed by the geometry of the prepreg, which further influences the properties of the woven composite system.

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Section: Woven Propertiesmentioning

confidence: 99%

Effect of Prepreg Geometry on the Prepreg and Plain Weave Composite Properties

Mariatti

Nasir

Ismail

2002

Journal of Reinforced Plastics and Composites

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“…Sutherland et al [7] conducted a literature review of scale and size effects on composites, and found that, while theories were prevalent in literature concerning the size effects, little was found in literature concerning size effects due to manufacturing scale and size changes. In part III of Sutherland et al [8], they conclude that for marine grade woven roving composites, the scale effect moving from coupon to ship scale is much more important than the size effect of the specimen being tested. They recommend that the coupons tested should be manufactured using a method as close as possible to that used in an actual ship scale due to the strong relationship between scale of manufacture and ultimate tensile values.…”

Section: Introductionmentioning

confidence: 99%

“…In part III of Sutherland et al. [8], they conclude that for marine grade woven roving composites, the scale effect moving from coupon to ship scale is much more important than the size effect of the specimen being tested. They recommend that the coupons tested should be manufactured using a method as close as possible to that used in an actual ship scale due to the strong relationship between scale of manufacture and ultimate tensile values.…”

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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“…Sutherland et al. (1999a, 1999b, 1999c) summarized size and scale effect on FRP composites through scaling laws and the application of the Buckingham-Pi theorem. Salviato et al.…”

Section: Introductionmentioning

confidence: 99%

Effects of yarn defects and specimen size on impact compressive damages of 3-D angle interlock woven composites

Liu

Sun

2017

International Journal of Damage Mechanics

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The objective of this work is to investigate yarn defects and specimen size on the impact compressive properties of 3-D angle interlock woven composites (AIWCs). The size effects on impact compressive properties were tested along in plane and out of plane directions. A new finite element model, with inherent defects in the geometrical model of yarns, was established to simulate impact compressive properties of the 3-D AIWCs. The model was further used to analyze size effects on impact compressive properties of 3-D AIWCs. We found the size effect on the 3-D AIWCs was not apparent both in experimental and numerical results; however, the random defects in yarns had a great effect on the compressive properties of 3-D AIWCs along different directions. The yarns effects will weaken the compressive stiffness and strength significantly.

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Size and scale effects in composites: III. Woven-roving laminates

Cited by 27 publications

References 2 publications

Effect of Prepreg Geometry on the Prepreg and Plain Weave Composite Properties

Effect of Prepreg Geometry on the Prepreg and Plain Weave Composite Properties

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

Effects of yarn defects and specimen size on impact compressive damages of 3-D angle interlock woven composites

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