Interfacial Aspects of Electrodeposited Conductive Fibers/Epoxy Composites using Electro-Micromechanical Technique and Nondestructive Evaluation.
Interfacial Aspects of Electrodeposited Conductive Fibers/Epoxy Composites using Electro-Micromechanical Technique and Nondestructive Evaluation.
复制标题
使用机电微机械技术和无损评估的电沉积导电纤维/环氧树脂复合材料的界面方面。
DOI：
10.1006/jcis.2001.7426
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发表时间：
2001
影响因子：
9.9
通讯作者：
D. Yoon
中科院分区：
文献类型：
--
作者：
Joung;Sang;Ki;D. Yoon
采用微机电技术和声发射（AE）技术研究了电沉积（艾德）碳纤维增强复合材料的界面结合性能和无损性能。艾德碳纤维/环氧复合材料的界面剪切强度（IFSS）高于未处理的情况。这可能是预期的，因为基于电吸附的聚合物中间层的可能的化学键和氢键。未处理的单碳纤维复合材料的对数电阻率突然增加到无穷大时，纤维断裂发生，而艾德复合材料的增加相对广泛，直到无穷大。这可能是由于IFSS增强导致断裂时间延迟。在单根和10根碳纤维复合材料中，来自艾德碳纤维复合材料层间破坏的AE信号的数量远大于未处理的复合材料。随着10碳纤维复合材料中每根第一纤维断裂数的增加，电阻率逐步增加，对数电阻率的斜率增加。在3根石墨丝复合材料中，1倍丝间距较窄的情况下，纤维断裂总数和IFSS小于5倍丝间距较宽的情况。这可能是因为由细丝断裂引起的相互作用的断裂能会影响相邻的细丝。版权所有2001学术出版社。
Interfacial adhesion and nondestructive behavior of the electrodeposited (ED) carbon fiber reinforced composites were evaluated using the electro-micromechanical technique and acoustic emission (AE). Interfacial shear strength (IFSS) of the ED carbon fiber/epoxy composites was higher than that of the untreated case. This might be expected because of the possible chemical and hydrogen bonding based on an electrically adsorbed polymeric interlayer. Logarithmic electrical resistivity of the untreated single-carbon fiber composite increased suddenly to infinity when the fiber fracture occurred, whereas that of the ED composite increased relatively broadly up to infinity. This may be due to the retarded fracture time as a result of the enhanced IFSS. In single- and 10-carbon fiber composites, the number of AE signals coming from the interlayer failure of the ED carbon fiber composite was much larger than that of the untreated composite. As the number of each first fiber fracture increased in the 10-carbon fiber composite, the electrical resistivity increased stepwise, and the slope of logarithmic electrical resistance increased. In the three-graphite filament composite with a narrow 1 time inter-filament distance, the total numbers of the filament fracture and the IFSS were smaller than those of the wider 5 times case. This might be because the interacting fracture energy caused by a filament break could affect the adjacent filaments. Copyright 2001 Academic Press.