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 -

Vidisco Ltd.
Vidisco Ltd. is the leading designer and manufacturer of state-of-the-art Digital Radiography systems.

784 views
Technical Discussions
Velu Perumal
Consultant, Research
National University of Singapore ,Singapore, Singapore, Joined Jun 2003, 1

Velu Perumal

Consultant, Research
National University of Singapore ,Singapore,
Singapore,
Joined Jun 2003
1
05:39 Aug-26-2003
Detecting thermal crack by NDT methods

Dear All,
I am working on thermal cracks on concrete.I would like to measure thermal stress and strains,crack precisely.Ofcourse surface cracks we can measure any methods. But thermal cracks are haapened internally.Can i measure thermal cracks using any one of current NDT methods.We already conducted thermal shock experiment (Circular Ring Specimen) using AE. Currently we have Acoustic Emmission(AE),UPV & Impact echo.please give your valuable suggestions


    
 
 
Bastiaan Janssen
NDT Inspector, Managing Xray micro-Tomography
NRG, Netherlands, Joined Jul 2003, 4

Bastiaan Janssen

NDT Inspector, Managing Xray micro-Tomography
NRG,
Netherlands,
Joined Jul 2003
4
03:13 Aug-27-2003
Re: Detecting thermal crack by NDT methods
Dear Velu Perumal,

Depending on size of test samples, erg. drilled core cylinders, I would suggest micro tomography,.Using x-ray or gamma ray's and a focal spot for the radiation source, this results in magnified projections wich can be reconstructed, using using many pictures form differend angeles, into a 3D-dataset. We have obtained internal crack visualisations of concrete cylinders diameter 5 cm, with a resolution of 1/10 m; Depending on x-ray energy, source spotsize and sample diameter...

Best regards.
(On holliday until october)
http://www.nrg-nl.com/product/ppt/tomo/index.html

----------- Start Original Message -----------
: Dear All,
: I am working on thermal cracks on concrete.I would like to measure thermal stress and strains,crack precisely.Ofcourse surface cracks we can measure any methods. But thermal cracks are haapened internally.Can i measure thermal cracks using any one of current NDT methods.We already conducted thermal shock experiment (Circular Ring Specimen) using AE. Currently we have Acoustic Emmission(AE),UPV & Impact echo.please give your valuable suggestions
------------ End Original Message ------------




    
 
 
R.Malathy, Senior Lecturer in Civil Engineering, Kongu Engineering college, Peru
R.Malathy, Senior Lecturer in Civil Engineering, Kongu Engineering college, Peru
09:32 Feb-26-2004
Re: Detecting thermal crack by NDT methods
Dear Sir,

We have TICO ultrasonic Pulse velocity tester. How to measure the thermal cracks.


    
 
 
zuhudruba
zuhudruba
03:17 Apr-08-2005
Re: Detecting thermal crack by NDT methods
----------- Start Original Message -----------
: Dear All,
: I am working on thermal cracks on concrete.I would like to measure thermal stress and strains,crack precisely.Ofcourse surface cracks we can measure any methods. But thermal cracks are haapened internally.Can i measure thermal cracks using any one of current NDT methods.We already conducted thermal shock experiment (Circular Ring Specimen) using AE. Currently we have Acoustic Emmission(AE),UPV & Impact echo.please give your valuable suggestions
------------ End Original Message ------------




    
 
 
TERD
TERD
08:21 Jul-03-2005
Re: Detecting thermal crack by NDT methods
----------- Start Original Message -----------
: Dear Velu Perumal,
: Depending on size of test samples, erg. drilled core cylinders, I would suggest micro tomography,.Using x-ray or gamma ray's and a focal spot for the radiation source, this results in magnified projections wich can be reconstructed, using using many pictures form differend angeles, into a 3D-dataset. We have obtained internal crack visualisations of concrete cylinders diameter 5 cm, with a resolution of 1/10 m; Depending on x-ray energy, source spotsize and sample diameter...
: Best regards.
: (On holliday until october)
: http://www.nrg-nl.com/product/ppt/tomo/index.html
: : Dear All,
: : I am working on thermal cracks on concrete.I would like to measure thermal stress and strains,crack precisely.Ofcourse surface cracks we can measure any methods. But thermal cracks are haapened internally.Can i measure thermal cracks using any one of current NDT methods.We already conducted thermal shock experiment (Circular Ring Specimen) using AE. Currently we have Acoustic Emmission(AE),UPV & Impact echo.please give your valuable suggestions
------------ End Original Message ------------




    
 
 

Product Spotlight

Swift & Scorpion2 - a state-of-the-art remote-control ultrasonic crawler

The Swift and Scorpion2 dry-coupled, remote-access ultrasonic crawler bring major efficiency and d
...
ata improvements to tank shell inspections and other structures such as vessels and offshore installations.
>

SONOAIR - air-coupled Phased Array Ultrasonic Inspection System

For highly attenuating materials, the performance of the system is critical. The ultrasonic sensors,
...
the scanning area and the system settings should be flexibly adapted to the test task and the material. These high expectations are met with the new and modular testing system SONOAIR. With the world’s first air-coupled phased-array UT inspection system SONOAIR we developed a technology that works with up to 4 transmitter and receiver channels with freely configurable square wave burst transmitters as wells as low noise receiving amplifiers.
>

Lyft™: Pulsed Eddy Current Reinvented

PEC Reinvented—CUI Programs Redefined Corrosion under insulation (CUI) is possibly the greatest u
...
nresolved asset integrity problem in the industry. Current methods for measuring wall thickness with liftoff, without removing insulation, all have severe limitations. Eddyfi introduces Lyft — a reinvented, high-performance pulsed eddy current (PEC) solution. The patent- pending system features a state-of-the-art portable instrument, real- time C-scan imaging, fast data acquisition with grid-mapping and dynamic scanning modes, and flexibility with long cables. It can also scan through thick metal and insulation, as well as aluminum, stainless steel, and galvanized steel weather jackets. Who else but Eddyfi to reinvent an eddy current technique and redefine CUI programs. Got Lyft?
>

Semi-Automated Phased Array Immersion System for Small Composite Parts

Turn-key semi-automated system as an improved and affordable solution for inspection of small comp
...
osite parts. Includes support table, immersion tank, scanner, PA instrument, PC, Analysis software, database, wedge management and other options.
>

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