This paper aims to detect the structure damage in KT type jacket offshore platforms using acoustic
emission analysis. Experimental investigation has been implemented to analyze the transmission
characteristics, attenuation law, and source localization of the acoustic emission signals. The range of
energy attenuation coefficient and the signal amplitude attenuation law were obtained from experimental
data. Hence, the layout of acoustic emission sensors was optimized based on the energy
attenuation to achieve online damage monitoring for KT-jacket platforms. In order to validate the
performance of the optimized sensor layout, another experimental test was conducted on the designed
KT-jacket offshore platform to locate the acoustic emission sources. The test results demonstrate that
a positioning error of 8 mm or below can be obtained using the optimized sensor layout, and the
number of sensors can be reduced by 80% compared with that of the theoretical layout. As a result,
the optimized sensor layout enables efficient and effective damage detection for KT-jacket offshore
Grove, Carina Louise(University of Pretoria, 2017)
The clinical value of oto-acoustic emissions (OAEs) for the identification of the integrity of outer hair cell function has been proven numerous times in research studies, and OAEs are commonly included in the audiological ...
Omoregbee, Henry Ogbemudia; Heyns, P.S. (Philippus Stephanus)(Springer, 2018-09)
This paper uses Bayesian robust new hidden Markov modeling (BRNHMM) for bearing fault detection and diagnosis based on its acoustic emission signal. A variational Bayesian approach is used that simultaneously approximates ...
The objective of the current study was to evaluate the predictive role of the olivocochlear efferent reflex strength in
temporary hearing deterioration in young adults exposed to music. This was based on the fact that a ...