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 -

Canadian Institute for NDE
We are specialized in training for Radiography, Ultrasonics, Magnetic Particle, Liquid Penetrant, Eddy Current and emerging NDT technologies.

1096 views
Technical Discussions
Ch.Y.Xiao
Ch.Y.Xiao
04:11 Jun-22-2002
About metal hardness testing by eddy-current

Who can give me some suggestions about metal hardness testing by eddy-current?
Thanks.


    
 
 
S.V.Swamy
Engineering, - Material Testing Inspection & Quality Control
Retired from Nuclear Fuel Complex , India, Joined Feb 2001, 785

S.V.Swamy

Engineering, - Material Testing Inspection & Quality Control
Retired from Nuclear Fuel Complex ,
India,
Joined Feb 2001
785
03:47 Jun-23-2002
Re: About metal hardness testing by eddy-current
: Who can give me some suggestions about metal hardness testing by eddy-current?
: Thanks.

Pl. describe clearly what you are looking for. If you prefer, you can contact me directly at .

Swamy



    
 
 
Sean Franklin
Sean Franklin
06:52 Jun-24-2002
Re: About metal hardness testing by eddy-current
:In addition to eddy-current, Resistivity – a basic principle of electricity - is a proven and widely used method of ndt to help determine the case depth and hardness of metal. The Physical Acoustics M100A Metal Inspector uses resistivity as it pulses a rapidly reversing direct current into the metal through a 4-point probe, and measures the metal’s resistance to the current flow.

Metal in a hardened state will always exhibit a higher resistivity to the flow of electricity than an unhardened metal because its grain structure has become more tightly packed through heat treatment. The greater the case depth of any given parts, the higher the resistivity reading on the M100A display screen. Likewise, annealing will bring the resistivity back down.

For further information, please contact Sean Franklin at Physical Acoustics Corporation, via Sfranklin@PACNDT.com or (609) 716-4088

: Who can give me some suggestions about metal hardness testing by eddy-current?
: : Thanks.
.
: Pl. describe clearly what you are looking for. If you prefer, you can contact me directly at .
.
: Swamy
.



    
 
 
David Forsyth
R & D
TRI/Austin, USA, Joined Nov 2001, 41

David Forsyth

R & D
TRI/Austin,
USA,
Joined Nov 2001
41
06:09 Jul-04-2002
Re: About metal hardness testing by eddy-current
Conductivity/resistivity measurements are not able to determine hardness in 7000 series aluminiums, see
http://www.ndt.net/article/aero1197/forsyth/forsyth.htm Figure 1, which should have an x axis label of conductivity. I do not know about other materials.

Dave.

: :In addition to eddy-current, Resistivity – a basic principle of electricity - is a proven and widely used method of ndt to help determine the case depth and hardness of metal.


    
 
 
SADIK SAYYED
SADIK SAYYED
08:55 Oct-12-2002
Re: About metal hardness testing by eddy-current and experimental set up for the same
: Conductivity/resistivity measurements are not able to determine hardness in 7000 series aluminiums, see
: http://www.ndt.net/article/aero1197/forsyth/forsyth.htm Figure 1, which should have an x axis label of conductivity. I do not know about other materials.
.
: Dave.
.
: : :In addition to eddy-current, Resistivity – a basic principle of electricity - is a proven and widely used method of ndt to help determine the case depth and hardness of metal. also tell me about experimental setup to determine the hardness by this method .

.



    
 
 

Product Spotlight

Lyft™: Pulsed Eddy Current Reinvented

PEC Reinvented—CUI Programs Redefined Corrosion under insulation (CUI) is possibly the greatest u
...
nresolved asset integrity problem in the industry. Current methods for measuring wall thickness with liftoff, without removing insulation, all have severe limitations. Eddyfi introduces Lyft — a reinvented, high-performance pulsed eddy current (PEC) solution. The patent- pending system features a state-of-the-art portable instrument, real- time C-scan imaging, fast data acquisition with grid-mapping and dynamic scanning modes, and flexibility with long cables. It can also scan through thick metal and insulation, as well as aluminum, stainless steel, and galvanized steel weather jackets. Who else but Eddyfi to reinvent an eddy current technique and redefine CUI programs. Got Lyft?
>

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
>

I&T Nardoni

NDT, RESEARCH AND DEVELOPMENT OF NEW METHODOLOGY, TRAINING CENTER I&T NARDON INSTITUTE was idiated
...
in 1988 by Giuseppe Nardoni, now president and owner of the company, based on his multi-annual and international experience in the field of NDT.
>

Teletest Focus+

Teletest Focus+ electronics have superior capabilities than rivals on the market. Beyond the usual
...
test features, Focus+ has 24 transmit channels and 24 receive channels, with an additional on-board switching capabilities. The instrument's frequency range is 10–300 kHz.
>

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