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 -
672 views
Technical Discussions
AxlZ W AekZ
R & D
King mongkut's university of technology Thonburi, Thailand, Joined Jun 2001, 16

AxlZ W AekZ

R & D
King mongkut's university of technology Thonburi,
Thailand,
Joined Jun 2001
16
08:21 Apr-13-2002
I have problem with MFL TOOL for wire rope inspection.

I build a MFL tool for wire rope inspecton with coil sensors inside and use electromagnet for magnetizing. A problem is heat when I apply current from battery about 100 A to magnetizing coil. Can I reduce the heat ? Becase of, it destroy my casing and sensors.


 
 Reply 
 
Michael Trinidad
Consultant,
LMATS Pty Ltd , Australia, Joined Jan 2003, 138

Michael Trinidad

Consultant,
LMATS Pty Ltd ,
Australia,
Joined Jan 2003
138
04:52 Apr-16-2002
Re: I have problem with MFL TOOL for wire rope inspection.
You could try laminating the magnetic cores of your coils similar to transformers.

But what may be of interest to you was initially MFL rope testers were AC magnetic field operated but to my knowledge could only detect LF (Local Faults) such as broken wires. However after the advent and utilization of powerful rare earth magnets MFL rope testers can detect LF and LMA (Loss of Magnetic Area) faults such as corrosion, wear, thinning etc using a combination of coil and hall effect sensors.


Kindest Regards


Michael Trinidad

: I build a MFL tool for wire rope inspecton with coil sensors inside and use electromagnet for magnetizing. A problem is heat when I apply current from battery about 100 A to magnetizing coil. Can I reduce the heat ? Becase of, it destroy my casing and sensors.
.



 
 Reply 
 
AxlZ W AekZ
R & D
King mongkut's university of technology Thonburi, Thailand, Joined Jun 2001, 16

AxlZ W AekZ

R & D
King mongkut's university of technology Thonburi,
Thailand,
Joined Jun 2001
16
07:31 Apr-17-2002
Re: I have problem with MFL TOOL for wire rope inspection.
: I build a MFL tool for wire rope inspecton with coil sensors inside and use electromagnet for magnetizing. A problem is heat when I apply current from battery about 100 A to magnetizing coil. Can I reduce the heat ? Becase of, it destroy my casing and sensors.
.
Dear Sir.
Thank you, for your suggest. I used DC supply(100A. 12V.)not AC supply. Because of,rare magnet in my country is expensive and hard to find. Can I detect LMA fault with coil sensors only? I think tested signal can intigral with sigal conditioning unit. Right?

THank you.

AxlZ W. AekZ




 
 Reply 
 
Michael Trinidad
Consultant,
LMATS Pty Ltd , Australia, Joined Jan 2003, 138

Michael Trinidad

Consultant,
LMATS Pty Ltd ,
Australia,
Joined Jan 2003
138
02:00 Apr-18-2002
Re: I have problem with MFL TOOL for wire rope inspection.
Sawadee,

I guess with new computing technology you may be able to differentiate between the signals. I have done a lot of rope testing on mineshafts in Australia and found it to be a very interesting field.

If I can help in anyway please ask.

Kindest Regards


Michael Trinidad
Business Development Manager




 
 Reply 
 

Product Spotlight

GEKKO - Portable Phased Array Testing with TFM in Real-Time

The portable phased array testing system GEKKO provides 64 parallel test channels. On creating testi
...
ng parameters the operator is assisted by the CIVA software. Due to its modular set-up the GEKKO instrument is suitable for operators of all skill levels.
>

Echomac® Small

Available with up to eight channels of electronics to detect and evaluate thickness, flaws and eccen
...
tricity, this UT tester is housed in a convenient, smaller cabinet. This instrument can be used in conjunction with bubbler or immersion tank systems, or with a test bench or in laboratory applications. The Echomac® Small is available in the FD4, FD6 or FD6A versions.
>

A1525 SOLO

A1525 Solo – the most compact and affordable TMF unit with two phased array transducers and 3D v
...
isualization and analysis software in standard delivery set. A compact, ergonomic and easy to handheld Phased Array unit based on Total Focusing Method for easy-going imaging of inspection objects with two-dimensional and three-dimensional visualization and evaluation of inspection results.
>

FAAST-PA! OEM Patented phased Array for high speed UT inspection

Multiangle, Multifocus, Multifrequency, Multibeam. Instead of stacking UT electronics and having m
...
any PA probes, FAAST-PA is able to transmit all delay laws within ONE single shot in Real time.
>

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