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Akmal
University of Kuala Lumpur, Malaysia, Joined May 2019, 1

Akmal

University of Kuala Lumpur,
Malaysia,
Joined May 2019
1
06:30 May-19-2019
Phased Array for Flat Composite Laminates

Greetings everyone... i am doing a research related with flat composite laminates inspection using phased array... Can any expert suggest some astm or asme code that can be used for the standard procedure... it would be great if i can hv the reference... thank you

    
 
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Anmol Birring
Consultant,
Birring NDE Center, Inc., USA, Joined Aug 2011, 746

Anmol Birring

Consultant,
Birring NDE Center, Inc.,
USA,
Joined Aug 2011
746
14:10 May-19-2019
Re: Phased Array for Flat Composite Laminates
In Reply to Akmal at 06:30 May-19-2019 (Opening).

There are some in E3.03 See ASTM E2533

    
 
 Reply 
 
J.B.
J.B.
00:21 May-21-2019
Re: Phased Array for Flat Composite Laminates
In Reply to Anmol Birring at 14:10 May-19-2019 .

From my experience I would not refer to any ASTM or ISO or… references.
Why?
This is mostly 2nd hand information. The most experience with CFRP production and maintenance you will find in aerospace industry directly, there you will find much better documents, the airframer’s experience is much advanced to all other industry. Additionally the certification needs are much higher than anywhere else. So the best documents are from Airbus or Boeing (and maybe Lockheed Martin), latest since Boeing 787 and Airbus A350, but already with the Airbus A310, where the VTP and HTP were the first flying real large CFRP structures in commercial aircraft production (first flight A310: April 3rd, 1982) the experience with full scale NDT has been accumulated at Airbus over more than 35 years.
I have found a list of relevant production documents: (refer to https://www.ndt.net/article/saint-2018/papers/The-qualification-process-for-an-Ultrasonic-facility-for-the-inspection-of-composite-parts.pdf - see the references at the end of the paper)
AITM6-0011: Non-Destructive Inspection of Composite Parts
AITM6-0012: Reference standards for non-destructive inspection methods on fibre composites.
AITM6-4005: Ultrasonic pulse-echo inspection of carbon fibre plastics.
AITM 6-4010: Inspection of fibre composites by ultrasonic phased array technique.
AITM6-0014: Probability of detection POD.
There are also some General Procedures published in the Airbus NTM general Part 51, (refer to http://airlines.org/wp-content/uploads/2014/10/231600-Cedric-C.pdf) in case of A350 the chapter 51-94-01 treats PAUT inspection of solid CFRP parts.
For Boeing I know that the B787 NTM chapter 51 also offers a lot of procedures, here the procedures are not so general, for my feeling things are somehow confusing, as there are separate procedures for Omniscan, for Toshiba MatrixEye, for Boeing MAUS, and so on. More or less the content is “Copy and Paste”, but it seemed that different authors described same things different.
Also for production the Boeing documents are interesting, but finally the methods are comparable to Airbus.
It is difficult to get access to Boeing and Airbus documents (you may ask the OEMs NDT people directly or contact their risk sharing partners or subcontractors or sometimes even universities and research groups collaborating with the airframe OEMs, often you can find such procedures referenced/annexed in their papers…). As an alternative there are some other resources which are directly following the airframer’s technology: That is of course the FAA (more than the EASA, as the policy of the US authorities is to publish a lot in the net). AANC/Sandia (Albuquerque, NM) works on behalf of the FAA so valuable information is also published by them. The 3rd group is the SAE (https://www.sae.org/search/?qt=cacrc) which has published the design guides for CFRP and also some valuable papers about NDT of CFRP, those papers are e.g. the result of the ITG (inspection task group) of the CACRC (commercial aircraft composite repair group). CACRC members are all Airframe OEMs and the major airlines with own maintenance facilities.
Some links to papers:
http://www.tc.faa.gov/its/worldpac/techrpt/tc15-4.pdf
http://www.tc.faa.gov/its/worldpac/techrpt/tc16-8.pdf
http://www.tc.faa.gov/its/worldpac/techrpt/tc14-27.pdf
http://www.tc.faa.gov/its/worldpac/techrpt/tc15-63.pdf
http://www.tc.faa.gov/its/worldpac/techrpt/tc15-6.pdf
http://www.tc.faa.gov/its/worldpac/techrpt/tc17-63.pdf
http://www.tc.faa.gov/its/worldpac/techrpt/ar0854.pdf
http://www.tc.faa.gov/its/worldpac/techrpt/ar0625.pdf
http://www.tc.faa.gov/its/worldpac/techrpt/ar02-109.pdf
https://www.osti.gov/servlets/purl/1120394

    
 
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john
Other, PLANT INSPECTOR
SABIC , Singapore, Joined Apr 2016, 10

john

Other, PLANT INSPECTOR
SABIC ,
Singapore,
Joined Apr 2016
10
09:41 May-21-2019
Re: Phased Array for Flat Composite Laminates
In Reply to Akmal at 06:30 May-19-2019 (Opening).

Hi

I have a doubt, if long bead welding defects, does LRUT can possibly find out defects??

    
 
 Reply 
 
J.B.
J.B.
13:34 May-21-2019
Re: Phased Array for Flat Composite Laminates
In Reply to john at 09:41 May-21-2019 .

John,
are you sure that your question fits the topic "Phased Array for Flat Composite Laminates"??
Of course welding might became in future interesting for composite laminates if thermoplastics (TCP) replace termoset on a wide scale, but I had the impression Aklmal addressed the question to traditional fiber reinforced plastics.
LRUT usually copes with pipe inspection, but is rarely used for flat composites

1    
 
 Reply 
 
john
Other, PLANT INSPECTOR
SABIC , Singapore, Joined Apr 2016, 10

john

Other, PLANT INSPECTOR
SABIC ,
Singapore,
Joined Apr 2016
10
13:18 Jun-12-2019
Re: Phased Array for Flat Composite Laminates
In Reply to Akmal at 06:30 May-19-2019 (Opening).

Hi

I have a doubt, if long bead welding defects, does LRUT can possibly find out defects??

    
 
 Reply 
 

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