Role of weak particle-matrix interfacial adhesion in deformation and fracture mechanisms of rigid particulate-filled poly(methyl methacrylate)

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• 作者：Erich D. Bain ; ^{erich.d.bain.civ@mail.mil} ; Randy A. Mrozek ; Joseph L. Lenhart ; ^{joseph.l.lenhart.civ@mail.mil}
• 关键词：Particulate filled composite ; Thermoplastic ; PMMA ; Fracture toughness ; Interfacial adhesion ; Crack tip craze
• 刊名：Mechanics of Materials
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：104
• 期：Complete
• 页码：1-12
• 全文大小：4671 K
• 卷排序：104

文摘

Rigid fillers improve thermomechanical stability of PMMA, maintain processability. Weak filler adhesion improves PMMA toughness, strong interface degrades toughness. Debonding facilitates plastic void growth, shear banding in bulk and at crack tip. Interparticle spacing ≤ equilibrium crack-tip craze width decreases toughness. Fracture toughness quantitatively modeled to account for crack-tip craze shortening.