where expertise comes together - since 1996 -

The Largest Open Access Portal of Nondestructive Testing (NDT)

Conference Proceedings, Articles, News, Exhibition, Forum, Network and more

where expertise comes together
- since 1996 -

TecScan Systems
We offer a complete line of NDT scanners, Immersion Tanks & Gantry systems which incorporate Ultrasonic, Phased Array & Eddy Current technologies.
350 views
Technical Discussions
Anonymous
Anonymous
03:55 Sep-08-2004
MT Field Strength Equation

Where does the 45,000 constant come from in the equation to determine longtitudinal field strength using the length/diameter ratio when using Magnetic Particle testing?


 
 Reply 
 
DJ Kallhof
DJ Kallhof
03:02 Sep-09-2004
Re: MT Field Strength Equation
----------- Start Original Message -----------
: Where does the 45,000 constant come from in the equation to determine longtitudinal field strength using the length/diameter ratio when using Magnetic Particle testing?
------------ End Original Message ------------
It is considered a rule of thumb. By using 45,000 while in contact with the coil and 43,000 centered the resultant flux density will be 70,000 lines per square inch (110 lines per square mm). To quote BETZ;"Extensive experimental work has shown that a field of 70,000 lines per square inch is a satisfactory field strength for almost all cases of coil magnetization.



 
 Reply 
 

Product Spotlight

Aerospace Systems - Automated Ultrasonic Inspection

USL are specialists in the design and manufacture of turnkey ultrasonic inspection systems for aer
...
ospace applications. From monolithic composites to complex honeycomb structures. This video shows just a few examples of what is possible, find out more at: www.ultrasonic-sciences.co.uk
>

Silverwing RMS PA - Phased-array corrosion mapping

Eddyfi Technologies integrated two market leading solutions, Silverwing’s RMS and M2M’s instru
...
ments to provide a high-speed, remote access ultrasonic phased-array inspection system with live total focusing method (TFM).
>

NEW! The PragmaPro Instrument Platform

The PragmaPro is based on a modular cartridge technology and supports various NDT instrument modal
...
ities such as UT, PAUT, ECT and many more. This new platform is based on a machined, powder-coated aluminum frame for shock-proofness, best sealing qualities and maximum heat dissipation. This is practical to extend the outdoor temperature range and/or to extend the power injected in the transducers. The PragmaPro is aiming at a very wide range of applications, such as weld scanning, corrosion mapping and composite testing.
>

Research Center IDEKO develops an ultrasonic train wheel inspection system for CAF

The Basque Research centre IK4-IDEKO has developed a state-of-the-art ultrasonic inspection system f
...
or the train wheel. This system secures a sound condition of train wheels and is thus a significant contribution to rail transport safety. The device was delivered to CAF recently and its use allows the manufacturer to become an approved supplier of rolling stock in Italy, as it meets the demanding homologation standards of this country. \\\\r\\\\n
>

Share...
We use technical and analytics cookies to ensure that we will give you the best experience of our website - More Info
Accept
top
this is debug window