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 -

Materials Research Institute
Consulting to the NDT industry.

850 views
Technical Discussions
Andreas Bugge
Andreas Bugge
01:31 Jul-01-2002
Real time monitoring of aircraft structures

I am a Norwegian student of Mechanical Engineering having a summer internship in Germany.

Doing literature research on the topic; "in-service/real time crack growth monitoring of aircraft aluminum structures", I would like to know where to start.

Do anyone know specific literature on the topic? I have searched the NDT.net database and found several articles, but none specifically addressing this problem.

Another question is which methods that are suitable for this kind of monitoring. Is acoustic emission, eddy current, ultrasonic testing, or vibrothermography more promising?

Hope that somone can help me.

Thanks!
Andreas Bugge



    
 
 
Jens Forker
Jens Forker
02:02 Jul-01-2002
Re: Real time monitoring of aircraft structures
A very good starting point for literature search regarding acoustic emission (AE) is certainly the 'Journal of AE', published by Professor Kanji Ono, UCLA (ono@seas.ucla.edu).

Further AE is a very promising technique, as it allows one to monitor a quite large volume with only 1 sensor without the need for scanning. We helped a company doing health monitoring of a re-entry vehicle.

For more details on AE see our website and contact us directly.

Regards
Jens Forker

: I am a Norwegian student of Mechanical Engineering having a summer internship in Germany.
.
: Doing literature research on the topic; "in-service/real time crack growth monitoring of aircraft aluminum structures", I would like to know where to start.
.
: Do anyone know specific literature on the topic? I have searched the NDT.net database and found several articles, but none specifically addressing this problem.
.
: Another question is which methods that are suitable for this kind of monitoring. Is acoustic emission,eddy current, ultrasonic testing, or vibrothermography more promising?
.
: Hope that somone can help me.
.
: Thanks!
: Andreas Bugge
.



    
 
 
Jeff Kott
Jeff Kott
02:42 Jul-30-2002
Re: Real time monitoring of aircraft structures
: I am a Norwegian student of Mechanical Engineering having a summer internship in Germany.
.
: Doing literature research on the topic; "in-service/real time crack growth monitoring of aircraft aluminum structures", I would like to know where to start.
.
: Do anyone know specific literature on the topic? I have searched the NDT.net database and found several articles, but none specifically addressing this problem.
.
: Another question is which methods that are suitable for this kind of monitoring. Is acoustic emission, eddy current, ultrasonic testing, or vibrothermography more promising?
.
: Hope that somone can help me.
.
: Thanks!
: Andreas Bugge
.
Andreas,

Acoustic emmision is great for detecting real-time crack growth. AE will only detect the fact that it is actually cracking but will be unable to measure the length or depth of the cracks. Eddy current and Ultrasonic techniques are utilized for this. Feel free to contact me if you have any further questions.


    
 
 
Robert Paynter
Robert Paynter
00:41 Jul-30-2002
Re: Real time monitoring of aircraft structures
: I am a Norwegian student of Mechanical Engineering having a summer internship in Germany.
.
: Doing literature research on the topic; "in-service/real time crack growth monitoring of aircraft aluminum structures", I would like to know where to start.
.
: Do anyone know specific literature on the topic? I have searched the NDT.net database and found several articles, but none specifically addressing this problem.
.
: Another question is which methods that are suitable for this kind of monitoring. Is acoustic emission, eddy current, ultrasonic testing, or vibrothermography more promising?
.
: Hope that somone can help me.
.
: Thanks!
: Andreas Bugge

A UK source: I suggest you look out for the "Structural Integrity and Damage Assessment Network". Which was an alliance of researchers in the UK. One of the meetings I attended was hosted by DERA at Farnborough and a focus was aircraft applications.
The Website (www.sidanet.org) - minutes of that meeting: http://www.shef.ac.uk/mecheng/sida/html/min_8.htm
maybe Gareth Pierce's Lamb Wave Technique is one to try.

Robert


    
 
 
John O'Brien
Consultant, -
Chevron ETC , USA, Joined Jan 2000, 278

John O'Brien

Consultant, -
Chevron ETC ,
USA,
Joined Jan 2000
278
07:35 Jul-30-2002
Re: Real time monitoring of aircraft structures
You may find something useful in the aerospace journals or possibly look up references including NASA, SAAB, Airbus etc.

Acoustic Emission has been used for real time localised crack monitoring in flight on some of the high performance fighter aircraft.

The technique is used extensively during design certification, qualification on aircraft and components. AE has also been utilised extensively by some Military Operators for operational re-certification of old aircraft by pressurising the fuselage and monitoring for AE activity.

AE works particular well on detecting damage in carbon fibre composite materials now common in aircraft and space vehicle systems.


    
 
 

Product Spotlight

SITEX CPSERIES

Teledyne ICM’s CPSERIES has been designed with a view to revolutionizing the handling and perfor
...
mances of portable X-Ray sets. Despite having managed to halve the weight of similar portable X-Ray generators available on the market (while continuing to provide the same power output), the SITEX CPSERIES generators feature a shutter, a laser pointer, a beryllium window, an aluminum filter and two integrated diaphragms (customized sizes are available upon request). Without compromising the robustness and reliability for which ICM products are renowned, the small size and light weight of the SITEX CPSERIES will radically change the way that you perform your RT inspections. And you will see a positive impact in terms of both quality and return on investment (ROI).
>

NEW! The PragmaPro Instrument Platform

The PragmaPro is based on a modular cartridge technology and supports various NDT instrument modal
...
ities such as UT, PAUT, ECT and many more. This new platform is based on a machined, powder-coated aluminum frame for shock-proofness, best sealing qualities and maximum heat dissipation. This is practical to extend the outdoor temperature range and/or to extend the power injected in the transducers. The PragmaPro is aiming at a very wide range of applications, such as weld scanning, corrosion mapping and composite testing.
>

Ultrasonic Flaw Detector & Thickness Gauge: Smartor

SIUI’s newly launched Smartor is a combination of ultrasonic testing and ultrasonic thickness me
...
asurement. ●IP 66 ●Compact size: 198 (W)* 128 (H) *520 (D) mm ●0.9kg only with battery ●5.7" LCD with high resolution 640×480 pixels ●One-hand operation ●Multiple conventional UT functions ●Smart Test Wizard ●Weld Simulation
>

NovaScope 6000

The all-digital Novascope 6000 is a portable, ultra-high precision thickness gauge for high-speed
...
thickness measurement. Novascope 6000 has unmatched capabilities and unique features including: •Superior Resolution with high contrast, high-speed color RF display •High pulser voltage •Real-time video output •Increased internal/external data storage •Programmable SetUp features •Battery & AC Powered
>

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