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Technical Discussions
John Quiroga
John Quiroga
23:18 Sep-10-2017
which are the most reliable NDT methods for detecting cracks

Hi,

I want to built a testing bench for detecting and quantifying cracks in carbon steel pipes between 2 and 3 inches. For doing so, I need to select the suitable NDT technique and sensor.
Which NDT methods are more suitables? and where should I look for information to go deeper in the subject

Thanks

 
 Reply 
 
Anmol Birring
Consultant,
Birring NDE Center, Inc., USA, Joined Aug 2011, 832

Anmol Birring

Consultant,
Birring NDE Center, Inc.,
USA,
Joined Aug 2011
832
03:13 Sep-11-2017
Re: which are the most reliable NDT methods for detecting cracks
In Reply to John Quiroga at 23:18 Sep-10-2017 (Opening).

ID, OD, axial, circ - what are you looking for ?

 
 Reply 
 
John Quiroga
John Quiroga
04:21 Sep-11-2017
Re: which are the most reliable NDT methods for detecting cracks
In Reply to Anmol Birring at 03:13 Sep-11-2017 .

It is OD, and its for detecting wahtever type of cracks

 
 Reply 
 
Godfrey Hands
Consultant,
PRI Nadcap, United Kingdom, Joined Nov 1998, 307

Godfrey Hands

Consultant,
PRI Nadcap,
United Kingdom,
Joined Nov 1998
307
16:58 Sep-11-2017
Re: which are the most reliable NDT methods for detecting cracks
In Reply to John Quiroga at 23:18 Sep-10-2017 (Opening).

How much product do you need to inspect? Over what period of time?
What is the condition of the product?
How fast do you need to inspect?
Do you need automation?
What size of crack must you detect?
What budget do you have available?

These are just some more questions.

Godfrey

 
 Reply 
 
Anmol Birring
Consultant,
Birring NDE Center, Inc., USA, Joined Aug 2011, 832

Anmol Birring

Consultant,
Birring NDE Center, Inc.,
USA,
Joined Aug 2011
832
03:17 Sep-12-2017
Re: which are the most reliable NDT methods for detecting cracks
In Reply to John Quiroga at 04:21 Sep-11-2017 .

MT- longitudinal + circular

 
 Reply 
 
Rakesh Parmar
NDT Inspector,
India, Joined Dec 2014, 59

Rakesh Parmar

NDT Inspector,
India,
Joined Dec 2014
59
11:30 Sep-14-2017
Re: which are the most reliable NDT methods for detecting cracks
In Reply to John Quiroga at 23:18 Sep-10-2017 (Opening).

Cracks which are open to the surface , will easily detected by PT or MT , MT or PT which method shall be use it is up the material , weather it is carbon steel, stainless steel.

In short Every NDT method has its own limitations and advantages over detecting cracks.
so different method will give u different results.

greetings.

 
 Reply 
 

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