期刊
COMPOSITES PART B-ENGINEERING
卷 99, 期 -, 页码 305-311出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2016.05.055
关键词
Fibres; Fibre/matrix bond; Fracture toughness; Surface analysis; Additive manufacturing
We analyze the flexural reinforcement of a high-strength cement mortar using metallic fibers obtained via additive manufacturing of a powder of the titanium alloy Ti-6Al-4V. The analyzed fibers feature either macroscopic or microscopic surface roughness. Their surface morphology is characterized via optical and scanning electron microscopy. The results highlight that the flexural strength and fracture toughness of the examined mortar depend on the scale of the surface roughness of the reinforcing fibers. Specimens reinforced with fibers exhibiting microscopic surface roughness exhibit a pull through bonding mechanism between fiber and matrix, which causes limited matrix damage and a diffuse friction contribution to energy dissipation. Specimens reinforced with fibers exhibiting microscopic surface roughness, however, feature a pull through bonding mechanism that causes remarkable matrix damage. Comparisons with previous results relative to the reinforcement of a different cement mortar by the same fibers are established. (C) 2016 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据