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 -

442 views
Technical Discussions
shawn
shawn
09:16 Jul-28-2005
Delaminations in Fibreglass Composites

Does anyone out there have anny good techniques for checking for delam lines in fibreglass composites? Also would like to know the tech numbers as well. i.e. x-ducer, standoff, freq, velocity, db, etc., Thank you in advance.
Shawn


    
 
 
Neil Burleigh
Sales
Krautkramer Australia Pty Ltd, Australia, Joined Dec 2002, 153

Neil Burleigh

Sales
Krautkramer Australia Pty Ltd,
Australia,
Joined Dec 2002
153
01:04 Jul-29-2005
Re: Delaminations in Fibreglass Composites
Hello Shawn,
Before getting into this application we should first determine what types of Fiberglass composites you wish to test and for what industry application the composite will be used for. For example if it is for the aerospace industry there are reams of documentation available, ie test procedures for the UT examination of composites for delamination.
Could it be for 'cherry picker' booms (Lifting Cranes)? Acoustic Emission is used wifely in this application.
Alternatively could it be in the ship building industry?
In every case the manufacturing process needs to be well documented before you could perform an UT examination with a high level of confidence. To try and carry out an examination of a fiberglass composite not knowing whether it has been hand laid, what weight of fiber was used, what was the ratio of fiber to resin in the mix. Was the fiber suitably 'wetted' before being covered in resin to reduce the incidence of air bubbles. Was the hardening process sufficently slow enough to allow the resin to suffuse into the fiber matrix to maximise the strength of the component.
All the above variables will have an effect on how sound travels through this material and thereby impact on the UT examination.

Hoping I haven't scared you off but you can still get some very meaningful data as long as you are aware.

Regards
Neil Burleigh

----------- Start Original Message -----------
: Does anyone out there have anny good techniques for checking for delam lines in fibreglass composites? Also would like to know the tech numbers as well. i.e. x-ducer, standoff, freq, velocity, db, etc., Thank you in advance.
: Shawn
------------ End Original Message ------------




    
 
 
Joerg Collrep
Joerg Collrep
09:10 Jul-29-2005
Re: Delaminations in Fibreglass Composites
Dear Shawn,
we have successfully done tests with Shearography on fiberglass composites. The technique provides only the information about any potential delaminations inside the object but doesn't tell you more.
If you would like to have further information about the technique please feel free to contact me.

----------- Start Original Message -----------
: Does anyone out there have anny good techniques for checking for delam lines in fibreglass composites? Also would like to know the tech numbers as well. i.e. x-ducer, standoff, freq, velocity, db, etc., Thank you in advance.
: Shawn
------------ End Original Message ------------




    
 
 

Product Spotlight

NEW - TD Focus-ScanRX

The NEW Next Generation Advanced UT platform, TD Focus ScanRX - Also available as a card stack solut
...
ion. Key Improvements 1. Data acquisition is significantly faster than current design 2. Better aesthetic – closely aligns with HandyScan RX 3. Improved IP rating (Target IP66) 4. Ruggedized housing 5. Connectors are protected from impact and ingress 6. Integrated stand and separate retractable handle easy to keep clean) 7. Touchscreen with ruggedized display glass 8. 3-Axis encoder input
>

Compact NDT inspection-heads for measurements with active thermography

The compact inspection head is suitable for thermographic ndt tasks. The uncooled infrared camera
...
is specially developed for NDI-tasks and offers a thermal sensitivity until now known only from thermal imagers with cooled detector. All required components and functions are integrated into the inspection-head. You will only need an ethernet cable to connect the sensor with the evaluation system.
>

Mentor UT – Ultrasonic Phased Array Flaw Detector

With Mentor UT, you get an accessible and efficient inspection experience. Create user-defined menus
...
and workflows (“apps”) with GE’s desktop software Mentor Create to ensure consistency, even for the most complex inspections, every time. Mentor UT is the first UT device to easily allow wireless connectivity and live streaming, so you get second opinions when you need them most—in real-time.
>

NOVO Armor 15 & NOVO Armor 22

The Armor Kit Contains the NOVO Armor, which provides additional mechanical protection to the NOVO 1
...
5WN & NOVO 22WN Detectors, the Armor Stand and a traveling soft cover. - Newest shock absorbent technology case - Water resistant design - Supports wired & wireless communication - Multiple positioning options - Tripod connection using the Built-in 1/4” threads - Simple Detector battery replacement
>

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