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 -

567 views
Technical Discussions
Diba Abinama
, Joined ,
06:07 Jan-19-2002
anyone can help me?

Dear members,
I need a answer for the followings:
What are the differences between multifrequency eddycurrent with single frequency one?
Does the MFEC use of many single frequencies (i.e. 8 frequencies) , or use of a spectrum of frequencies?

Thank you for your help.



 
 Reply 
 
Joe Buckley
Consultant, ASNT L-III, Honorary Secretary of BINDT
Level X NDT, BINDT, United Kingdom, Joined Oct 1999, 528

Joe Buckley

Consultant, ASNT L-III, Honorary Secretary of BINDT
Level X NDT, BINDT,
United Kingdom,
Joined Oct 1999
528
01:43 Jan-19-2002
Re: anyone can help me?
: Dear members,
: I need a answer for the followings:
: What are the differences between multifrequency eddycurrent with single frequency one?
: Does the MFEC use of many single frequencies (i.e. 8 frequencies) , or use of a spectrum of frequencies?
.
: Thank you for your help.
.

Difference is that you use multiple frequencies to reduce or eliminate interfering effects (e.g Tube support plate signals in the most basic application)

Normally two or more (about 4 is the most common) discrete frequencies are used.) Either simultaneous or multiplexed.

Alternatively (e.g for material property assessment) a succession of tests may be done at different freqencies (effectively a 'sweep') to give a complete picture of the reponse. This is normally only done with 'semi-static' tests




 
 Reply 
 

Product Spotlight

Micro CT

nanoVoxel series has nano-scale resolution upto 500nm by using high voltage X-ray source (from 80-
...
300 kV) with micro/nano focal spot and highly sensitive flat panel detectors and unique Optical coupling detector.
>

IRIS 9000Plus - Introducing the next generation of heat exchanger inspection.

Representing the seventh generation of the IRIS system, the IRIS 9000 Plus has nearly 200 years of c
...
ombined field inspection experience incorporated in its design. This experience combined with a strong commitment to quality and a history of innovation has made Iris Inspection Services® the undisputed leader in IRIS technology.
>

NOVO Armor 15 & NOVO Armor 22

The Armor Kit Contains the NOVO Armor, which provides additional mechanical protection to the NOVO 1
...
5WN & NOVO 22WN Detectors, the Armor Stand and a traveling soft cover. - Newest shock absorbent technology case - Water resistant design - Supports wired & wireless communication - Multiple positioning options - Tripod connection using the Built-in 1/4” threads - Simple Detector battery replacement
>

IntraPhase Athena Phased Array System

The Athena Phased Array system, manufactured by WesDyne NDE Products & Technology, consists of a pha
...
sed array acquisition system and PC running IntraSpect software. A PC is used to perform acquisition, analysis and storage of the data. System hardware is capable of operating up to four data sets with any combination of phased array or conventional UT probes. NOW AVAILABLE IN 64-64 CONFIGURATION.
>

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