Non destructive observation of defects in composite materials using time domain THz imaging

被引：0

作者：

Fukunaga, K. ^{[1
]}

Mizuno, M. ^{[1
]}

Destic, F. ^{[2
]}

Massenot, S. ^{[2
]}

Mollier, J. -C. ^{[3
]}

机构：

[1] Natl Inst Informat & Commun Technol, Koganei, Tokyo 1848795, Japan

[2] Inst Super Aeronaut & Espace, F-31055 Toulouse, France

[3] Off Natl Etud & Rech Aerosp, F-31055 Toulouse, France

来源：

2011 ANNUAL REPORT CONFERENCE ON ELECTRICAL INSULATION AND DIELECTRIC PHENOMENA, VOLS 1 AND 2 | 2011年

关键词：

terahertz; composite materials;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Terahertz waves can penetrate opaque materials and fingerprint spectra appear as those in infrared bands. The technique is expected to be used as a new non-invasive analysis method for various materials. The authors have applied terahertz time domain spectroscopy (THz-TDS) to observe cracks of two types of fibre-reinforced polymers (FRPs) which were Kevlarand Carbon-FRPs in reflection mode. Internal defects, cracks or a void of Kevlar-FRP were clearly observed, which cannot be detected non-invasively by existing methods, such as ultrasound imaging. Although CFRP is highly reflective and the internal structure was hardly recognised observed, surface defects under the paint can be easily observed.

引用

页码：239 / 242

页数：4

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