Rotative polarization system of millimetric wave for detecting fiber orientation in CFRP

Journal Article · Sat Feb 01 00:00:00 EST 1992 · Journal of Reinforced Plastics and Composites; (United States)

DOI:https://doi.org/10.1177/073168449201100205· OSTI ID:5522489

Urabe, K ^[1]

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1. Industrial Products Research Institute, Tsukuba, (Japan)

A new system for nondestructive and contact-free detection of fiber orientation in fiber reinforced composites such as CFRP was devised using 35 GHz millimetric wave. In this system, by rotating the polarization of the wave and compensating it after passing through the sample, changes of anisotropy caused by changes in fiber orientation of unidirectional CFRP or carbon fiber prepreg can be easily and efficiently checked. Scanning detection of fiber direction and of fiber misorientation are also possible with high sensitivity. Results of measurements with successful sensitivity are shown for several kinds of unidirectional samples with artificial fiber misorientations. 5 refs.

• OSTI ID: 5522489
• Journal Information: Journal of Reinforced Plastics and Composites; (United States), Vol. 11; ISSN 0731-6844
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
CARBON FIBERS
ORIENTATION
REINFORCED PLASTICS
NONDESTRUCTIVE TESTING
ANISOTROPY
POLARIZATION
WAVE PROPAGATION
WAVEGUIDES
FIBERS
MATERIALS
MATERIALS TESTING
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
REINFORCED MATERIALS
SYNTHETIC MATERIALS
TESTING
420500* - Engineering- Materials Testing