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- since 1996 -

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Technical Discussions
Daphnee Chouchena
Daphnee Chouchena
00:21 Mar-02-1999
Determining isolation houses

I'm looking for different NDT methods to determine the isolation value of houses (mainly brick and concrete walls).

When using Thermografy, does anyone know about the application and modelling the results to determine the isolation value?

Would it be possible to use Ultrasonic measurements, radar, laser or X-ray to determine:
- has isolation material been applied (gap characterisation?
- what is the thickness of the applied material?

I'd be very gratefull if someone could help me out.
Thanks very much.

I anybode


 
 Reply 
 
Rolf Diederichs
Director,
NDT.net, Germany, Joined Nov 1998, 618

Rolf Diederichs

Director,
NDT.net,
Germany,
Joined Nov 1998
618
09:50 Mar-02-1999
Re: Determining isolation houses
: I'm looking for different NDT methods to determine the isolation value of houses (mainly brick and concrete walls).

: When using Thermografy, does anyone know about the application and modelling the results to determine the isolation value?

: Would it be possible to use Ultrasonic measurements, radar, laser or X-ray to determine:
: - has isolation material been applied (gap characterisation?
: - what is the thickness of the applied material?

: I'd be very gratefull if someone could help me out.
: Thanks very much.

:

: I anybode
----------------------

Daphnee,

It may be difficult to get results for your application with use of ultrasonics. If at all it can be compared with ultrasonic testing of composites which offer similar difficult conditions. The wall with its isolation gape can be seen as a complex composite material. Characterization of composites can be done with ultrasonics and in particularly for your application low frequency airborne/air-coupled ultrasound may giveresults. On NDTnet we have literature and instruments in the exhibition of this field, e.g. QMI or NDTSystems offering air-coupled equipment. Through transmission technique is commonly used but may not be suitable for this application.

We have some experts of NDT in infrastructure on this forum - they may have an opinion?

Rolf
the requirements of your application are similiar to those of testing of composites with ultr



 
 Reply 
 
Rolf Diederichs
Director,
NDT.net, Germany, Joined Nov 1998, 618

Rolf Diederichs

Director,
NDT.net,
Germany,
Joined Nov 1998
618
00:09 Mar-02-1999
Re: Determining isolation houses
: I'm looking for different NDT methods to determine the isolation value of houses (mainly brick and concrete walls).

: When using Thermografy, does anyone know about the application and modelling the results to determine the isolation value?

: Would it be possible to use Ultrasonic measurements, radar, laser or X-ray to determine:
: - has isolation material been applied (gap characterisation?
: - what is the thickness of the applied material?

: I'd be very gratefull if someone could help me out.
: Thanks very much.

:

: I anybode
-----------------------

Daphnee,
It may be difficult to get results for your application with use of ultrasonics. If at all it can be compared with ultrasonic testing of composites which offer similar difficult conditions. The wall with its isolation gape can be seen as a complex composite material. Characterization of composites can be done with ultrasonics and in particularly for your application low frequency airborne/air-coupled ultrasound may give results. On NDTnet we have literature and instruments in the exhibition of this field, e.g. QMI or NDTSystems offering air-coupled equipment. Through transmission technique is commonly used but may not be suitable for this application.

We have some experts of NDT in infrastructure on this forum - they may have an opinion?

Rolf



 
 Reply 
 
PEDRO MARTIN DELGADO
PEDRO MARTIN DELGADO
00:44 Sep-20-2000
Re: Determining isolation houses
: I'm looking for different NDT methods to determine the isolation value of houses (mainly brick and concrete walls).

: When using Thermografy, does anyone know about the application and modelling the results to determine the isolation value?

: Would it be possible to use Ultrasonic measurements, radar, laser or X-ray to determine:
: - has isolation material been applied (gap characterisation?
: - what is the thickness of the applied material?

: I'd be very gratefull if someone could help me out.
: Thanks very much.

:

: I anybode





 
 Reply 
 
PEDRO MARTIN DELGADO
PEDRO MARTIN DELGADO
00:52 Sep-20-2000
Re: Determining isolation houses
: : I'm looking for different NDT methods to determine the isolation value of houses (mainly brick and concrete walls).

: : When using Thermografy, does anyone know about the application and modelling the results to determine the isolation value?

: : Would it be possible to use Ultrasonic measurements, radar, laser or X-ray to determine:
: : - has isolation material been applied (gap characterisation?
: : - what is the thickness of the applied material?

: : I'd be very gratefull if someone could help me out.
: : Thanks very much.

: :

: : I anybode


I,m looking for the same information, if some body knows something about it i´ll be please to talk with





 
 Reply 
 

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