Ultrasonic Creep Damage Detection by Frequency Analysis for Boiler Piping

Autor:	Hirokatsu Nakagawa, Nobukazu Ido, Ryota Uemichi, Takuya Ito, Hiroaki Hatanaka, Minoru Tagami
Rok vydání:	2006
Předmět:	Engineering Piping business.industry Frequency band Mechanical Engineering Ultrasonic testing Boiler (power generation) Structural engineering Creep Mechanics of Materials Frequency domain Nondestructive testing Ultrasonic sensor Safety Risk Reliability and Quality business
Zdroj:	Journal of Pressure Vessel Technology. 129:713-718
ISSN:	1528-8978 0094-9930
DOI:	10.1115/1.2767364
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7a41ce629470dd2e51ebf73abfc5eeeb https://doi.org/10.1115/1.2767364 Zobrazit plný text záznamu