An Acoustic-Emission Technique of Forced Vibrations Used for Flaw Detection in Thin-Walled Pressure Vessels

2005 ◽  
Vol 41 (3) ◽  
pp. 154-157 ◽  
Author(s):  
A. V. Popov
Keyword(s):  
Acoustic Emission ◽  
Flaw Detection ◽  
Forced Vibrations ◽  
Pressure Vessels ◽  
Acoustic Emission Technique ◽  
Thin Walled

Theoretical Analysis and Experimental Study on Acoustic Emission Wave Propagation in Perforated Thin-Walled Plate

2013 ◽  
Vol 330 ◽  
pp. 985-990
Author(s):  
Guang Ping Zou ◽  
Meng Chai ◽  
Fang Ren
Keyword(s):  
Experimental Study ◽  
Acoustic Emission ◽  
Wave Propagation ◽  
Stress Concentration ◽  
Nondestructive Test ◽  
Complex Variables ◽  
Acoustic Emission Technique ◽  
Concentration Parameter ◽  
Thin Walled ◽  
Dynamical Stress

Through complex variables function, wave propagation of perforated thin-walled plates is deduced. And it is found out that the dynamical stress concentrates where the concentration parameter vertical to incident orientation is about 1.5, and with the increase of incident wave frequency, holes have less influence on the dynamical stress concentration during wave propagation. With the help of acoustic emission technique, holes do not have much effect on nondestructive test of acoustic emission.

Screening for Welding Defects Using Acoustic Emission Technique

2014 ◽  
Vol 1025-1026 ◽  
pp. 7-12 ◽  
Author(s):  
Abdalla Aboali ◽  
Mohamed El-Shaib ◽  
Ashraf Sharara ◽  
Mohamed Shehadeh
Keyword(s):  
Acoustic Emission ◽  
Pressure Vessels ◽  
Steel Plates ◽  
Great Role ◽  
Acoustic Emission Technique ◽  
Nondestructive Technique ◽  
Large Structures ◽  
Service Testing ◽  
Welding Defects ◽  
Series Of Experiments

– Welding defects can create a major threat in industrial equipments and pressure vessels can during operation. Detecting and identifying of existing welding defects has a great role in the assessment of the probability of failure in different situations. Acoustic emission (AE) is only a nondestructive technique that can be used as in-service testing and used on large structures. This paper examines the changes in the properties of AE source generated from Pencil Lead Break (PLB). AE is recorded across different seam welds with pre-identified welding defects. Series of experiments are carried out on three certified standard Carbon Steel plates. Each plate has different pre-identified defect such as lack of fusion, porosity and slag. Different AE parameters such Energy, Amplitude and number of counts have been used to identify quantitatively the type of defects. The results are showing that AE technique is capable to identifying the different defects types which can be upgraded for higher productivity and accuracy for welding inspection.

PETROBRAS Criteria for Acoustic Emission and Fracture Mechanics Relationship

2006 ◽  
Author(s):  
Sergio Damasceno Soares ◽  
Joa˜o Marcos A. Rebello
Keyword(s):  
Acoustic Emission ◽  
Fracture Mechanics ◽  
Pressure Vessels ◽  
Clear Relationship ◽  
Acoustic Emission Technique ◽  
Environment Analysis ◽  
Nondestructive Tests ◽  
Made In

During the last years, PETROBRAS has used acoustic emission technique as an inspection tool. In this period, the acoustic emission concept has changed from a revolutionary technique to a global inspection technique with the aim of indicating areas to complementary inspection. In the last years more than 600 acoustic emission tests were done in equipments like pressure vessels, reactors, tanks, spheres, and etc. In 2002, the results of acoustic emission tests and nondestructive tests done on these equipment were collected to build a database in the PETROBRAS environment. Analysis made in this database has shown that exists a clear relationship between acoustic emission and the severity of flaws.

Optimizing the Acoustic-Emission Technique for Examining the Strength of Welded Joints

Vestnik MEI ◽  
2017 ◽  
pp. 96-101
Author(s):  
Viktor V. Nosov ◽  
◽  
Alsu R. Yamilova ◽  
Nikolay A. Zelenskiy ◽  
Ilya V. Matviyan ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Welded Joints ◽  
Acoustic Emission Technique

Evaluation of Severely Damaged Reinforced Concrete Beam Repaired with Epoxy Injection using Acoustic Emission Technique

2021 ◽  
pp. 102890
Author(s):  
Soffian Noor Mat Saliah ◽  
Noorsuhada Md Nor ◽  
Noorhazlinda Abd Rahman ◽  
Shahrum Abdullah ◽  
Mohd Subri Tahir
Keyword(s):  
Acoustic Emission ◽  
Reinforced Concrete ◽  
Concrete Beam ◽  
Reinforced Concrete Beam ◽  
Acoustic Emission Technique
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