|
 983 views |
 Technical Discussions | | Pauzi
 | Pauzi
|  02:05 Sep-03-1998
Corrosion Inspection by UT Is there any standard/specification regarding UT of corrosion?. I mean, calibration, sensivity setting, and acceptance/rejection criteria.
| |
| | | |  Yosi Bar-Cohen
R & D,
Jet Propulsion Lab (JPL), USA, Joined Nov 1998,  26  | | 06:33 Sep-03-1998
Re: Corrosion Inspection by UT : Is there any standard/specification regarding UT of corrosion?. I mean, calibration, sensivity setting, and acceptance/rejection criteria.---------- Dear Mr. Pauzi, There are many standards and specifications for NDE of corrosion
Most of the ones, with which I am familiar, are addressing specific
structures and they are manufacturer proprietary documents. There are
few generic documents that cover standard inspection procedures. As an
example, ASTM has a limited information in its E1004 Standards on Eddy current. Yosi
| |
| | | |  Rolf Diederichs
Director, Editor
NDT.net, Germany, Joined Nov 1998, 603   | | 07:31 Sep-03-1998
Re: Corrosion Inspection by UT : Is there any standard/specification regarding UT of corrosion?. I mean, calibration, sensivity setting, and acceptance/rejection criteria.---- Yosi Bar-Cohen mentioned already in his message that you can find standards
addressing certain components.
Here in Germany we have a guideline called US1
'Thickness Measurement with Ultrasound' published by the German Society for NDT,
however so far only in German available,
but I heard that an English version is on the way. See:
New German guidelines to wall thickness measurement - will be available in English
http://www.ndt.net/news/wt_guid.htm The handbook contains information on ultrasonic testing of corroded components.
For instance, it is recommended to use an echo display for corrosion gaging since
a blind test is often not reliable enough (digital numbers only).
Also a proper probe characteristic is needed accordingly to the specific geometry
of corrosion. Nowadays are guided waves (lamb waves) used for corrosion testing of
specific structures and depicting the area as an c-scan image without the need to
move the probe (e.g. aircraft structures, pipes).
Examples are aircraft structures and pipes. But since it is a new method I think
there exist no standard yet (Maybe Ahmad Chahbaz knows more about it). You may also find information browsing/searching NDT.net issue 1997 No. 10 which
focuses on "Ultrasonic Thickness Measurement" http://www.ndt.net/ut1097.htm. Rolf Diederichs
| |
| | | | Cheryl Simplot
| Cheryl Simplot
| 05:27 Mar-23-1999
Re: Corrosion Inspection by UT : : Is there any standard/specification regarding UT of corrosion?. I mean, calibration, sensivity setting, and acceptance/rejection criteria.: ---- : Yosi Bar-Cohen mentioned already in his message that you can find standards
: addressing certain components.
: Here in Germany we have a guideline called US1
: 'Thickness Measurement with Ultrasound' published by the German Society for NDT,
: however so far only in German available,
: but I heard that an English version is on the way. : See:
: New German guidelines to wall thickness measurement - will be available in English
: http://www.ndt.net/news/wt_guid.htm : The handbook contains information on ultrasonic testing of corroded components.
: For instance, it is recommended to use an echo display for corrosion gaging since
: a blind test is often not reliable enough (digital numbers only).
: Also a proper probe characteristic is needed accordingly to the specific geometry
: of corrosion. Nowadays are guided waves (lamb waves) used for corrosion testing of
: specific structures and depicting the area as an c-scan image without the need to
: move the probe (e.g. aircraft structures, pipes).
: Examples are aircraft structures and pipes. But since it is a new method I think
: there exist no standard yet (Maybe Ahmad Chahbaz knows more about it). : You may also find information browsing/searching NDT.net issue 1997 No. 10 which
: focuses on "Ultrasonic Thickness Measurement" http://www.ndt.net/ut1097.htm. : Rolf Diederichs
| |
| | |  Magnetic X-Ray Pipeline Crawler Zhong Yi brand pipeline crawler is magnetic/micro-video controlled
crawler with DC X ray unit inst ... alled for checking welding of pipeline.
Move steadily inside the pipeline 6''-60''diameter with speed of up to
18m/min, Max. moving diatance 5 kilometers and provide the efficient
inspection of the pipeline. >  TVC awarded UKAS accreditationTVC are delighted to finally announce we have been awarded UKAS
accreditation for our calibration ... laboratory.
Laboratory accreditation to ISO/IEC 17025:2005 enables us to
conduct the Electrical Verification of Ultrasonic Flaw Detection
Equipment to BS EN 12668-1:2010. It has taken many months of hard
work and we want to thank our staff for all their efforts during
this massive undertaking. >  Exertus Dual 120The Exertus Dual 120 Projector has the ability to accept Iridium 192
sources or Selenium 75 source ... s. This projector incorporates design
and
safety features that make it flexible, compact and lightweight.
The Projector is lighter than most of its competitors. It
incorporates an improved source channel, based on a new helicoidal
design, which makes maintenance easier. The helicoidal design also
allows smoother movement of the source assembly inside the device,
making it easier for the operator and improving safety. The
Projector also has a unique safety feature not found in competitive
products.
The source assembly locking mechanism is triggered by the source
holder capsule at the front of the source assembly, thereby always
assuring the operator that the source has returned to the
safe position. The Exertus Dual 120 is ISO3999:2004 compliant. > |
|
We use technical and analytics cookies to ensure that we will give you the best experience of our website - More Info
|
|
New German guidelines to wall thickness measurement .....
