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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Fern, Natalie
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article
Fatigue life predictions of porous composite paper coatings
Abstract
<p>Low-cycle strain-controlled fatigue tests were carried outto determine the influence of porosity, binder volume and binder typeused within a calcium carbonate based composite. Fatigue lifetime,degree of plastic strain, maximum cyclic stress and hysteresis loopswere analysed.</p><p>Porosity influenced by binder volume wasidentified as the main factor to effect a change in fatigue lifetime.Increasing polymer content by ten times led to a similar lifetime at 30times the amplitude. Lower <em>T</em><sub>g</sub> polymer binderimproved lifetime for high percentage volume binder by 2–5 times, butits effects were not noticeable in lower amounts. There was littledegradation in compressive strength as a function of number of cyclesbut tensile load bearing resistance depreciated noticeably throughouttesting due to areas of low binder leading to widespread areas of crackpropagation. Hysteresis loops show that for lower polymer concentrationslittle plastic damage occurs within the compressive portion of thefatigue cycles. This was due to the hard pigment particles dominatingcompressive behaviour.</p>