Test Method for Acoustic Emission Testing of Insulated and Non-Insulated Digger Derricks

2018 ◽  
Author(s):  
Keyword(s):  
Acoustic Emission ◽  
Test Method ◽  
Emission Testing ◽  
Acoustic Emission Testing

More than a Quarterly Century of Acoustic Emission Testing (AT) at TÜV Austria

2006 ◽  
Vol 13-14 ◽  
pp. 365-376
Author(s):  
Peter Tscheliesnig
Keyword(s):  
Acoustic Emission ◽  
Data Acquisition ◽  
Rapid Development ◽  
Test Method ◽  
Electronic Data ◽  
Emission Testing ◽  
Acoustic Emission Testing

The TÜV Austria (formerly TÜV Vienna) has been testing different structures, mainly pressure equipment, since 1977 with Acoustic Emission. I will not enumerate all the different tests, which are more than 20.000 till today, but I will point out, how the test method has changed on some typical tests over the years. I will also remind you on the different possibilities, which have been offered by the rapid development of the electronic data acquisition and treatment, especially during the last 10 – 15 years.

Acoustic Emission Testing and Structural Evaluation of Seamless, Steel Tubes in Compressed Gas Service

1986 ◽  
Vol 108 (2) ◽  
pp. 234-240 ◽  
Author(s):  
P. R. Blackburn ◽  
M. D. Rana
Keyword(s):  
Acoustic Emission ◽  
Test Method ◽  
Department Of Transportation ◽  
Structural Evaluation ◽  
Emission Testing ◽  
Industrial Gases ◽  
Acoustic Emission Testing ◽  
Acoustic Emission Test ◽  
Seamless Steel Tubes ◽  
Seamless Steel

Tube trailers are used in the distribution of industrial gases. The tubes, which are seamless steel, measure 22-in. diameter, about 1/2-in. wall, and 34 ft long. The U. S. Department of Transportation mandates periodic re-tests of tubes every 5 yr. Acoustic emission re-tests have been substituted for hydrostatic re-tests. This paper presents an analysis of flaws using fracture mechanics methods and establishes a maximum allowable flaw depth. It describes the acoustic emission test method and presents some typical results. Also, some discussion of the hydrostatic re-test is included.

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