Picture Scrapbook 
  Acoustic Emission Consulting, Inc. 


Search
Go


 COMPANY



Acoustic Emission Consulting, Inc. Homepage


Contact Information


Links


Picture Gallery


 More Information



About Us


Services


Frequent Questions


 COMMUNICATIONS



Calendar of Events


Download Files


 E-Mail



Message Center

John Rodgers  
Acoustic Emission Consulting, Inc.  
5000 San Juan Ave, Suite D  
Fair Oaks, CA 95628  

jr_aec@msn.com  


Sitemap






Picture Gallery
Include Pictures for your web site visitors to see

View all items


Service_.jpg

AED 2000

AEC Logo



The AED-2000 is the first of our field-portable acoustic emission instruments. See more information at our instrumentation website at www.aeconsulting.com


Acoustic Emission Consulting Logo



AET 5500 system

Acoustic Emission Waveguide

Sensor and waveguide .JPG
AET 5500 8-channel computerized acoustic emission data acquisition system used by AEC for online testing of high energy fossil piping.


Stud-welded AE waveguide. Typically 1-ft long 1/4" 304 SS shank. Provides sound coupling and temperature isolation for the AE sensor.


Field test engineer installing AE sensor in welded waveguide. An inert couplant, typically Dow high vacuum grease, is used to couple the sensor to the waveguide.



Studwelding AE waveguides

Brown 3 SH SEM Creep damage inů

Early stage creep
Studgun arrangement with special side-mount chuck fixture for studwelding of AE waveguides to high energy piping. Waveguides have been studwelded during offline and online conditions with good success.


Acoustic Emission found activity during online conditions in SH link piping segments at Kentucky Utilities Brown #3 unit in 1997-98. One section was removed and investigated by EPRI. Sensitive phased array ultrasonics located indications in the area detected by AE monitoring. A 3" plug was sent to M&M Engineering (Austin, TX)for cryocracking analysis. This SEM photo at 5000x shows isolated early stage creep cavitation found in the weld centerline.


Early stage creep damage in seam welds involves decohesion of inclusions and the growth of cavities around the decohered particles. Eventual linkage of these cavities leads to microcracking and eventual macrocracking.(After Henry, CE, unpublished, 1997)



Creep microcracking, seam weld

GRDA Coal Fired Complex

Mohave 1985 HRH failure
Micrograph of advanced creep microcracking in the fusion zone of a failed section of Sabine long seam bend


Grand River Dam Authority Coal Fired Complex, Chouteau, OK. Power plants as art?!


Mohave HRH piping failure, 1985



Monroe 1986 HRH failure

Mt. Storm 1996 SH pipe failure

Hawthorne 5 failure (1).jpg
Monroe HRH piping failure, 1986


Mt. Storm SH link piping failure, 1996. A worker in the parking lot captured the steam expulsion through the roof of the plant.


KCP&L Hawthorne 5 SH link piping failure, Aug 19 '98. Additional info under "Breaking News" file folder


Sign In for Upload





Acoustic Emission Consulting, Inc. Homepage  |  Contact Information  |  Links  |  Picture Gallery  |  About Us  |  Services  |  Frequent Questions  |  Calendar of Events  |  Download Files  |  Message Center

Acoustic Emission Consulting, Inc.
"We Listen"

Sign In

 Sign In