Journal Published Online: 03 May 2019
Volume 48, Issue 6

Feasibility of Noncontact Chemical Identification and Mapping for Steel Corrosion Using Portable Raman Spectroscopy

CODEN: JTEVAB

Abstract

This article presents the portable Raman spectroscopy as a novel noncontact chemical sensing technique for steel corrosion analysis that can be used in field bridge inspection. To validate its feasibility, the portable system was tested with four steel specimen sets by gradually increasing the complexity of corrosion products in atmospheric corrosion. A software algorithm was developed to process a large set of Raman spectra for automated chemical identification and two-dimensional chemical mapping. The portable Raman spectroscopy has advantages over conventional nondestructive evaluation techniques because (i) absolute chemical identification of corrosion products is possible without involving field calibration, (ii) no surface preparation is necessary, (iii) it allows for field inspection for periodic or in situ corrosion analysis, (iv) and because, being a noncontact portable sensing technique, it can be combined with a drone or robot for automated bridge inspection.

Author Information

Zhou, Zijie
Shanghai Research Institute of Building Sceiences (SRIBS), Shanghai, China
Park, Jeong Hoon
Korea Marine Equipment Research Institute, Ulsan, Korea
Kang, Gyu-Hong
Korea Marine Equipment Research Institute, Ulsan, Korea
Yun, Hae-Bum
Civil, Environmental and Construction Engineering, University of Central Florida, Orlando, FL, USA
Pages: 19
Price: $25.00
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Details
Stock #: JTE20180634
ISSN: 0090-3973
DOI: 10.1520/JTE20180634