Ultrasonic creep damage detection by frequency analysis for boiler piping

被引：7

作者：

Hatanaka, Hiroaki

Ido, Nobukazu

Ito, Takuya

Uernichi, Ryota

Tagami, Minoru

Nakagawa, Hirokatsu

机构：

[1] IHI Corp, Prod Engn Ctr, Isogo Ku, Yokohama, Kanagawa 2358501, Japan

[2] IHI Corp, Power Plant Div, Koto Ku, Tokyo 1358710, Japan

[3] IHI Corp, Power Plant Div, Aioi, Hyogo 6780041, Japan

来源：

JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME | 2007年 / 129卷 / 04期

关键词：

nondestructive testing; frequency analysis; creep damage; maintenance; fossil-fuel combustion power generation plants; boiler piping; frequency spectral intensity; life consumption; ultrasonic testing;

D O I：

10.1115/1.2767364

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Boiler piping of fossil-fuel combustion power generation plants are exposed to high-temperature and high-pressure environments, and failure of high-energy piping due to creep damage has been a concern. Therefore, a precise creep damage assessment method is needed. This paper proposes a nondestructive method for creep damage detection of piping in fossil-fuel combustion power generation plants by ultrasonic testing. Ultrasonic signals are transformed to signals in a frequency domain by Fourier transform, and a specific frequency band is chosen. To determine the creep damage, the spectrum intensities are calculated. Calculated intensities have a good correlation to life consumption of the weld joints, and this method is able to predict the remaining life of high-temperature piping, which has been already installed.

引用

页码：713 / 718

页数：6

共 5 条

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[2]

Cane B. J., 1983, P SEM FLOW FRACT EL, P279

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