Acoustic Emission Testing of High Strength Steel LPG Spherical Tanks

2013 ◽  
Author(s):  
Jun Jiang ◽  
Rong Yi ◽  
Lili Que
Keyword(s):  
Acoustic Emission ◽  
High Strength Steel ◽  
High Strength ◽  
Threshold Value ◽  
Detection Sensitivity ◽  
Emission Sources ◽  
Acoustic Emission Technique ◽  
Emission Testing ◽  
Spherical Tank ◽  
Acoustic Emission Testing

We use acoustic emission technique for the detecting of 1000m3 LPG spherical tank. The overall moitoring and local monitoring, as well as a combination of the two methods are applied. By lowering the threshold value, detection sensitivity is improved. 23 effective acoustic emission sources are discovered, in which 21 crack defects are retest.

scholarly journals Evaluation of hydrogen-induced cracking in high-strength steel welded joints by acoustic emission technique

2020 ◽  
Vol 190 ◽  
pp. 108573 ◽  
Author(s):  
Takayuki Shiraiwa ◽  
Miki Kawate ◽  
Fabien Briffod ◽  
Tadashi Kasuya ◽  
Manabu Enoki
Keyword(s):  
Acoustic Emission ◽  
Welded Joints ◽  
High Strength Steel ◽  
High Strength ◽  
Acoustic Emission Technique ◽  
Hydrogen Induced Cracking

Monitoring of Elastoplastic Fracture Behavior of HSLA Steel Using Acoustic Emission Testing

2021 ◽  
Vol 79 (4) ◽  
pp. 383-390
Author(s):  
Jalaj Kumar ◽  
C K Mukhopadhyay ◽  
Vikas Kumar
Keyword(s):  
Fracture Toughness ◽  
Acoustic Emission ◽  
Crack Initiation ◽  
Fracture Behavior ◽  
Hsla Steel ◽  
High Strength ◽  
Emission Testing ◽  
Acoustic Emission Testing ◽  
Unloading Compliance ◽  
Compliance Tests

The present study explores using acoustic emission testing (AE) to monitor the elastoplastic fracture toughness (JIC) of high-strength, low-alloy (HSLA) steel in two different orientations. Acoustic emission signals generated during the tests were found to be higher during bulk yielding upon initial loading, after which they decreased during intermediate loading before increasing again. The acoustic emission signals generated were used to correlate with the JIC values determined from unloading compliance tests. The point of crack initiation estimated by AE is lower than that determined by the unloading compliance tests. Beyond the point of crack initiation determined by AE, the acoustic emission signals generated increased rapidly, which is attributed to crack growth. The results of AE during crack initiation are supported by the peak amplitude of the acoustic emission signals. The possibility of using AE data to estimate fracture toughness values has also been explored for HSLA steel.

scholarly journals Acoustic Emission Testing and Ib-Value Analysis of Ultraviolet Light-Irradiated Fiber Composites

2021 ◽  
Vol 11 (14) ◽  
pp. 6550
Author(s):  
Doyun Jung ◽  
Wonjin Na
Keyword(s):  
Acoustic Emission ◽  
Irradiation Time ◽  
Tensile Load ◽  
Failure Behavior ◽  
Value Analysis ◽  
Emission Testing ◽  
Final Failure ◽  
Acoustic Emission Testing ◽  
Woven Glass Fiber ◽  
Ae Signals

The failure behavior of composites under ultraviolet (UV) irradiation was investigated by acoustic emission (AE) testing and Ib-value analysis. AE signals were acquired from woven glass fiber/epoxy specimens tested under tensile load. Cracks initiated earlier in UV-irradiated specimens, with a higher crack growth rate in comparison to the pristine specimen. In the UV-degraded specimen, a serrated fracture surface appeared due to surface hardening and damaged interfaces. All specimens displayed a linearly decreasing trend in Ib-values with an increasing irradiation time, reaching the same value at final failure even when the starting values were different.

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