...Abstract Abstract Interest in damage detection and damage pattern recognition of engineering structures by non-destructive techniques has been increasingly growing. As a non-destructive technique, acoustic emission (AE) has developed rapidly to detect dynamic defects and their evolution...

... were conducted on the un-broken PITCH-based CFRP up to 1,000,000 cycles with acoustic emission measurements. The Kaiser effect was not satisfied for the specimen with lower residual strength at the stress level of the fatigue test. In addition, gradual acoustic emissions with longer duration and rise...

... Tensile process of carbon fiber composite laminate was monitored by acoustic emission technique. And the acoustic emission signals by tensile specimens of different winding angles were analyzed. The results show that carbon fiber released signals of different characteristics in different stages...

... In order to study acoustic emission (AE) signals waveform characteristics of pitting corrosion on 304 stainless steel under higher temperature than lower one, Pitting corrosion process on 304 stainless steel in 6% ferric chloride solution at 70°C was monitored by AE technology. Wavelet transform...

... In order to study acoustic emission (AE) signals characteristics of pressure vessel leakage, several cases of common in-service pressure vessel with leakage failure such as seal leakage, pitting corrosion perforation and safety valve leakage were tested by AE technology. Through statistical...

... To study acoustic emission (AE) signals characteristics of stress corrosion crack (SCC) on in-service pressure vessels. The small pressure vessel with a pre-crack, filled 6% ferric chloride solution was monitored by AE technique. Conventional parameter-based approach and signal-based analysis...

... Safety evaluation of urea reactors containing defects was studied based on acoustic emission examination and subsequent dissection. First, acoustic emission examination was conducted in the process of pressure testing during the hydro test and the existed defects of the urea reactor were...

... Copyright © 2011 by ASME STUDY OF TANK ACOUSTIC EMISSION TESTING SIGNALS ANALYSIS METHOD BASED ON WAVELET NEURAL NETWORK Li Wei Northeast Petroleum University Daqing,Heilongjiang Province, 163318 China Dai Guang Northeast Petroleum University Daqing,Heilongjiang Province, 163318 China Long Feifei...

... 12 07 2010 Acoustic emission (AE) technique has been widely applied to pressure vessel and piping inspection, such as local abrasion or corrosion, growing fatigue cracks. Sound source location analysis plays an important role in the whole AE inspection and evaluation process, how...

... 04 08 2008 An Acoustic Emission Test (AET) was performed on a hydrocarbon processing reactor to inspect for environmental cracking in 2000. The thick-wall reactor was built in 1965, fabricated from 2.25Cr-1Mo steel with Type 347 stainless steel weld overlay. Past internal inspections...