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 -

1243 views
Technical Discussions
Azhar
Azhar
02:48 Feb-04-2007
Ask

How to carried out Ultrasonic Inspection on two layers material


 
 Reply 
 
Nigel
Engineering, - Specialist services
United Kingdom, Joined Oct 2000, 1096

Nigel

Engineering, - Specialist services
United Kingdom,
Joined Oct 2000
1096
05:56 Feb-04-2007
Re: Ask
Azhar

Your question is too vague to allow a reasonable response. Which materials, relative thicknesses, bonding or joining method, what type and size of indications are you looking for? More details and you will probably get a response.


----------- Start Original Message -----------
: How to carried out Ultrasonic Inspection on two layers material
------------ End Original Message ------------




 
 Reply 
 
AZHAR
AZHAR
02:30 Feb-07-2007
Re: Ask
thanks for you respons nigel,


actually i just need to know,how we can carried out UT on two material with different properties.can you give the idea?,i means that what technique we have to used


 
 Reply 
 
Ed D.
Ed D.
06:06 Feb-07-2007
Re: Ask
----------- Start Original Message -----------
: thanks for you respons nigel,
:
: actually i just need to know,how we can carried out UT on two material with different properties.can you give the idea?,i means that what technique we have to used
------------ End Original Message ------------

WHat kind of differences are you taking about? Yu are being very vague.
If you mean velocity differences then you need to use a different calibraiton block for each material.



 
 Reply 
 
Nigel
Engineering, - Specialist services
United Kingdom, Joined Oct 2000, 1096

Nigel

Engineering, - Specialist services
United Kingdom,
Joined Oct 2000
1096
08:17 Feb-07-2007
Re: Ask
If its a bonded joint then I suggest you have a test block made of the two materials with an intentional disbond area equivalent in size to the smallest area you wish to detect. Then, using a suitable compression wave probe, you can compare the response from the actual disbond with the reflection occasioned by the different acoustic impedances of the two materials according to the formula given on this page:

http://www.ndt.net/article/az/ut/reflc.htm

Very general I know but you are not giving any details of the test item. Use the excellent UT encyclopaedia on here.





 
 Reply 
 
Ed Ginzel
R & D, -
Materials Research Institute, Canada, Joined Nov 1998, 1303

Ed Ginzel

R & D, -
Materials Research Institute,
Canada,
Joined Nov 1998
1303
02:37 Feb-07-2007
Re: Ask
Azhar:
You have still not provided any details of your problem.
Might I suggest that as a starter you could simply use Nigel's list of items as a checklist and provide the details he itemised:
e.g.
Which materials: carbon steel to stainless

relative thicknesses: 3mm stainless to 25mm carbon steel

bonding or joining method: explosive welding

and so on....

Without information on the details no response is possible....There are some situations where ultrasonic testing may not be appropriate or perhaps even there are no NDT options available!
Ed

----------- Start Original Message -----------
: Azhar
: Your question is too vague to allow a reasonable response. Which materials, relative thicknesses, bonding or joining method, what type and size of indications are you looking for? More details and you will probably get a response.
:
: : How to carried out Ultrasonic Inspection on two layers material
------------ End Original Message ------------




 
 Reply 
 
Ed D.
Ed D.
05:49 Feb-08-2007
Re: Ask
----------- Start Original Message -----------
: Azhar:
: You have still not provided any details of your problem.
: Might I suggest that as a starter you could simply use Nigel's list of items as a checklist and provide the details he itemised:
: e.g.
: Which materials: carbon steel to stainless
: relative thicknesses: 3mm stainless to 25mm carbon steel
: bonding or joining method: explosive welding
: and so on....
: Without information on the details no response is possible....There are some situations where ultrasonic testing may not be appropriate or perhaps even there are no NDT options available!
: Ed
:
: : Azhar
: : Your question is too vague to allow a reasonable response. Which materials, relative thicknesses, bonding or joining method, what type and size of indications are you looking for? More details and you will probably get a response.
: :
: : : How to carried out Ultrasonic Inspection on two layers material
------------ End Original Message ------------

I agree with Ed G. The bottom line however, is you will probabl;y need a calibraiton block for each material or as Ed stated a mock up


 
 Reply 
 

Product Spotlight

VeeScan AirCraft Wheel Inspection

The VEESCAN offers maximum flexibility, has a proven mechanical design and records of breakdown-fr
...
ee operation of over 365 days. Appealing to companies in the Aerospace industry, the VEESCAN is ideal for all wheel-testing environments. With a wide selection of probes, the VeeScan allows your wheel testing facility the flexibility to select the most compatible configurations with their workload.
>

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.
>

High-performance Linear Phased Array Probes

Available to order from stock in a range of 5MHz – 7.5MHz and from 16 to 64 elements. Designed w
...
ith piezo-composite elements, Phoenix phased array probes provide high-resolution imaging to maximise sensitivity; accurate ultrasonic detection and sizing of defects in welds; and effective corrosion mapping. Housed in a rugged stainless steel case for on-site industrial NDT applications.
>

OPBOX with standard software is able to do all types of inspections and measurements: flaw detection in welds and materials, scanning of objects, testing composite materials, forged and moulded pieces, many UT inspections, measurements of properties of ma

Typical applications: UT measurements with pulse technique, Measurement of thicknesses also at hig
...
h temperatures, Measurements of properties of materials, including fluids and gases We are delivering a standard version of the software (for any Microsoft Windows up to 10 x64 with Microsoft Hardware certification report Approved) and for special needs: SDK with ready to use examples for LabView, MATLAB x64, C++ wrapper for dll, Python and Linux., and also low-level description of how to control our devices directly from any USB tools
>

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