Carbon fiber reinforced concrete as an intrinsically smart concrete for damage assessment during static and dynamic loading

淡江大學機構典藏 > 工學院 > 航空太空工程學系暨研究所 > 期刊論文 > Item 987654321/62357

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题名:	Carbon fiber reinforced concrete as an intrinsically smart concrete for damage assessment during static and dynamic loading
作者:	Chen, Pu-woei;Chung, D. D. L.
贡献者:	淡江大學航空太空工程學系
关键词:	carbon;concretes;damage;dynamic loads;electrical resis-tance;fibers
日期:	1996-07
上传时间:	2013-05-30 15:26:47 (UTC+8)
出版者:	Farmington Hills: American Concrete Institute
摘要:	Concrete containing short carbon fibers (in amounts as small as 0.2 volume- percent) was found to be an intrinsically smart concrete that can sense elastic deformation, inelastic deformation, and fracture. The signal provided is the change in electrical resistance, which is reversible for elastic deformation and irreversible for inelastic deformation and fracture. The presence of electrically conducting short fibers is necessary for the concrete to sense elastic or inelastic deformation, but the sensing of fracture does not require fibers. The fibers serve to bridge the cracks and provide a conduction path. The resistance increase is due to conducting fiber pullout in the elastic regime, conducting fiber breakage in the inelastic regime, and crack propagation at fracture. Applications include real-time damage assessment and dynamic load monitoring.
關聯:	ACI Materials Journal 93(4), pp.341-350
显示于类别:	[航空太空工程學系暨研究所] 期刊論文

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