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 -
722 views
Technical Discussions
Paul Fischer
Consultant
Milwaukee School of Engineering, United Arab Emirates (UAE), Joined Sep 2004, 1

Paul Fischer

Consultant
Milwaukee School of Engineering,
United Arab Emirates (UAE),
Joined Sep 2004
1
07:16 Sep-12-2004
detectable flaw size in aluminum

I have an interesting problem that I need help with. I need to be able to detect a flaw size of .05 inches around a bolt hole on a helicopter rotor blade. I am limited to using ultrasonics. We think we should be able to accomplish this but we are unsure what frequency would be necessary and what tranducer angles to use. Any help would be appreciate.


 
 Reply 
 
S.G.
Consultant
Enrico Enterprises, India, Joined Jul 2004, 20

S.G.

Consultant
Enrico Enterprises,
India,
Joined Jul 2004
20
06:44 Sep-13-2004
Re: detectable flaw size in aluminum
----------- Start Original Message -----------
: I have an interesting problem that I need help with. I need to be able to detect a flaw size of .05 inches around a bolt hole on a helicopter rotor blade. I am limited to using ultrasonics. We think we should be able to accomplish this but we are unsure what frequency would be necessary and what tranducer angles to use. Any help would be appreciate.
------------ End Original Message ------------

Hi, Dear sir

Basic UT said the smallest defect can possible to detect by half wavelength and it is possible by high frequency. The angle selection is depend on the thickness of material. So mention the approx. dimentions.

Warm regard
S.G.



 
 Reply 
 
S.V.Swamy
Engineering, - Material Testing Inspection & Quality Control
Retired from Nuclear Fuel Complex , India, Joined Feb 2001, 787

S.V.Swamy

Engineering, - Material Testing Inspection & Quality Control
Retired from Nuclear Fuel Complex ,
India,
Joined Feb 2001
787
09:08 Sep-17-2004
Re: detectable flaw size in aluminum
----------- Start Original Message -----------
: I have an interesting problem that I need help with. I need to be able to detect a flaw size of .05 inches around a bolt hole on a helicopter rotor blade. I am limited to using ultrasonics. We think we should be able to accomplish this but we are unsure what frequency would be necessary and what tranducer angles to use. Any help would be appreciate.
------------ End Original Message ------------
Dear Paul,

Greetings. First make a defect stadard. Then try to see how the defect can be approached. The wavelength needed will be twice the defect size, that is about 0.1 inch. So, you will be able to work out the frequency, since you would know which velocity to use, longitudinal or shear. If you can send a sketch of the setup, I would probably be able to help you better.

Best wishes.

Swamy




 
 Reply 
 

Product Spotlight

Ultrasonic tomograph for imaging of concrete structures А1040 MIRA

Applicable for concrete inspection allowing imaging of the internal structure of objects from conc
...
rete, reinforced concrete, different stones. The operation applies pulse-echo technique at one-side access to the object. The instrument is feasible for concrete inspection for searching conduct ducts, conduits, detection of foreign inclusions, holes, honeycombing, cracks and other concrete defects.
>

Ultrasonic Squirter/Gantry System

TecScan’s NDT Ultrasonic Gantry Systems are industrial Squirter scanners designed for non-destru
...
ctive quality testing and raster scanning of large structures and parts. The Gantry Systems are usually composed of an Industrial Mechanical Scanner and a Control Room with System Workstation.
>

Wireless TOFD scanner

Quick, accurate and highly reproducible welds testing. The System operates wirelessly and is compat
...
ible with any type of Windows based Laptop, Desktop or Tablet.
>

NDTkit RT

NDTkit RT, TESTIA's Digital Radiography software The NDTkit product line software for X-ray analysi
...
s. NDTkit RT is a software benefiting from the Ultis kernel which is dedicated to radiographic image analysis. It offers a set of tools and filtering processes to assist RT operators in finding relevant flaws.
>

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