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 -

1410 views
Technical Discussions
S.Sathik Basha
Teacher
Crescent Engineering College, India, Joined Sep 2004, 3

S.Sathik Basha

Teacher
Crescent Engineering College,
India,
Joined Sep 2004
3
12:35 Jul-07-2009
reg- Lcr Probe construction -reg.

Please sir, tell me how to get the Lcr probe for residual stress measurement in carbon steel.
Give the company details or other wise how to prepare the Lcr probe.

 
 Reply 
 
bob sudharmin
Engineering, Reliability and Integrity Eng
Shell Malaysia Trading, Malaysia, Joined Jan 2008, 54

bob sudharmin

Engineering, Reliability and Integrity Eng
Shell Malaysia Trading,
Malaysia,
Joined Jan 2008
54
13:33 Jul-07-2009
Re: reg- Lcr Probe construction -reg.
In Reply to S.Sathik Basha at 12:35 Jul-07-2009 (Opening).

By residual stress measurement, do you mean hardness testing?

 
 Reply 
 
sathik basha
Teacher
Crescent Engineering College, India, Joined Sep 2004, 3

sathik basha

Teacher
Crescent Engineering College,
India,
Joined Sep 2004
3
12:37 Jul-09-2009
Re: reg- Lcr Probe construction -reg.
In Reply to bob sudharmin at 13:33 Jul-07-2009 .

Lcr probe is used to find the residual stress in weldment. it consists of Ultrasonic probe of one transmitter and one receiver assembly that create critically refracted waves to analysis the residual stressess in weldment.
please give your siggestion

 
 Reply 
 
Ed Ginzel
R & D, -
Materials Research Institute, Canada, Joined Nov 1998, 1304

Ed Ginzel

R & D, -
Materials Research Institute,
Canada,
Joined Nov 1998
1304
14:44 Jul-09-2009
Re: reg- Lcr Probe construction -reg.
In Reply to sathik basha at 12:37 Jul-09-2009 .

There is an ASTM Standard Practice for measuring ultrasonic velocity in polyethelene tank walls (E-2479). This too uses the Lcr probe in a transmit-receive setup. The concept of applying this to residual stress measurement would be very similar in that you are associating stress changes with velocity changes. The setup is effectively that used for a TOFD inspection. To reduce thermal effects that could hinder absolute time measurement, you could use 2 receivers in tandem with their separation precisely measured. This would give a relative arrival time difference. A baseline measurement would be requried to rate the unstressed state then you could make measurements during applied and then residual stress states (e.g. before, during and after measurents). This said, the probe angles you require could probably be satisfied by standard TOFD probes.

 
 Reply 
 

Product Spotlight

Immersion systems

ScanMaster ultrasonic immersion systems are designed for high throughput, multi shift operation in a
...
n industrial or lab environment. These fully integrated systems provide various scanning configurations and incorporate conventional and phased arrays technologies to support diverse applications, such as inspection of disks, bars, shafts, billets and plates. All of ScanMaster immersion systems are built from high accuracy scanning frames allowing for scanning of complex parts and include a multi-channel ultrasonic instrument with exceptional performance. The systems are approved by all major manufacturers for C-scan inspection of jet engine forged discs. Together with a comprehensive set of software modules these flexible series of systems provide the customer with the best price performance solutions.
>

FD800 Bench Top Flaw Detectors

The bench-top FD800 flaw detector range combines state-of-the-art flaw detection with advanced mater
...
ial thickness capabilities. Designed for use in the laboratory these gauges are the tool you need for all your flaw detecting needs.
>

MUSE Mobile Ultrasonic Equipment

The MUSE, a portable ultrasonic imaging system, was developed for in-field inspections of light-weig
...
ht structures. The MUSE consists of a motor-driven manipulator, a water circulation system for the acoustic coupling and a portable ultrasonic flaw detector (USPC 3010). The MUSE provides images of internal defects (A-, B-,C- and D-scan).
>

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