Paper Title:
Ultrasonic Characterization of Degradation of Aging Epoxy Coating
  Abstract

Acoustic impedance of aging epoxy coating in nuclear plant is measured for evaluation of the degradation of the epoxy coating using a new ultrasonic measurement technique that uses a specially designed conical acoustic lens to determine the reflection coefficient (reflectance) of the epoxy coating. Reflection waves measured at two different vertical positions slightly apart from each other are subtracted and used to calculate the acoustic impedance of the epoxy coating. Epoxy coated concrete specimens are fabricated and degraded artificially under accelerated aging conditions to determine the acoustic impedance of the films. Experimental results show that the acoustic impedance is very sensitive to the degradation of coating and can be applied to evaluate the quality of the epoxy coating quantitatively.

  Info
Periodical
Materials Science Forum (Volumes 449-452)
Edited by
S.-G. Kang and T. Kobayashi
Pages
1209-1212
DOI
10.4028/www.scientific.net/MSF.449-452.1209
Citation
N. Y. Kim, H. S. Nah, "Ultrasonic Characterization of Degradation of Aging Epoxy Coating", Materials Science Forum, Vols. 449-452, pp. 1209-1212, 2004
Online since
March 2004
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Ho Dong Yang, Yool Kwon Oh
Abstract:The present study is investigated the causes of enhanced heat transfer during the melting process of solid-liquid PCM (Phase Change...
1145
Authors: Li Li Guo, Mi Mi Li, Min Sun, Dong Yu Xu, Shi Feng Huang
Chapter 3: Optical and Electronic Materials
Abstract:A piezoelectric ceramic(lead niobium lithium zirconate titanate, P(LN)ZT), sulphoaluminate cement and polymer were used to fabricate polymer...
305
Authors: Hyun Se Kim, Yang Lae Lee, Eui Su Lim, Menachem Elimelech
Chapter 6: Chemical Mechanical Cleaning: Megasonic Cleaning
Abstract:When fabricating flat panel displays (FPDs), cleaning process is important in the preparation of next steps. A megasonic system for cleaning...
181
Authors: Hak Bin Kim, Earl Han, Sung Woon Cha
Chapter 2: Materials Science and Engineering
Abstract:The microcellular foamed plastics (MCPs) have high material strength, a relatively small cell size, and a high cell density in comparison...
936
Authors: Yan Bing Zhang, Chun Yu Ren, Xi Zhu
Chapter 1: Composites
Abstract:In this paper, we designed a FGM which can be used as the cover of underwater target and research its mid-low frequency acoustic...
132