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 -

417 views
Technical Discussions
Jose Capmany
Jose Capmany
05:30 Feb-23-2001
LASER ULTRASONICS

Dear Colleagues,

I am working of a laser ultrasonic system for the detection of porosity and cracks in the tile industry. Tiles are manufactured by cooking green ceramics, but before the pieces are introduced into the oven (i.e when they are still "fresh)it is convenient to exam them. In this case, laser ultrasonics appears to be a good alternative.
Most of the laser ultrasonics NDT material that I have read is related to metals, and I would like to know if there is any source where I can find information rgerading the testing of ceramics

Thanks in advance.


    
 
 
Wieslaw Bicz
Wieslaw Bicz
04:01 Feb-23-2001
Re: LASER ULTRASONICS
: Dear Colleagues,
.
: I am working of a laser ultrasonic system for the detection of porosity and cracks in the tile industry. Tiles are manufactured by cooking green ceramics, but before the pieces are introduced into the oven (i.e when they are still "fresh)it is convenient to exam them. In this case, laser ultrasonics appears to be a good alternative.
: Most of the laser ultrasonics NDT material that I have read is related to metals, and I would like to know if there is any source where I can find information rgerading the testing of ceramics
.
: Thanks in advance.
.
Have you considered the possibility to use air ultrasound for this purpose. It seems for me, that this could be cheaper and may be even better for your purpose.
We have some experience with testing wooden products with air ultrasound (have made electronics and transducers for this purpose) and I think, that this would be an alternative.
I can imagine, that it would be possible to make a kind of scanner that would test each pile automatically. Cracks and changes in material properties could be detected easily.
Resolution could be enough for this purpose.


    
 
 
Mahesh C. Bhardwaj
Mahesh C. Bhardwaj
07:18 Feb-23-2001
Re: LASER ULTRASONICS
Relative to non-contact ultrasonic evaluation of green tiles or other ceramics, see: www.secondwavesystems.com

You can very easily characterize velocity, thickness, attenuation, defects, etc. in green materials with our non-contact transducers and the NCA 1000 analyzer.

Green materials analysis by non-contact ultrasound is now state of the art.

Mahesh C. Bhardwaj, Director R&D
SecondWave Systems
1020 E. Boal Avenue
Boalsburg, PA 16827 USA

phone: 814.466.6200
fax: 814.466.6847
email: Mcbhardwaj@aol.com


    
 
 

Product Spotlight

Robotic laser shearography enables 100% inspection of complex, flight-critical composite structures

An article in “Composites World Magazine” showcases Non Destructive Testing of aero-structures
...
with Laser Shearography. Over the years Dantec Dynamics has supplied many solutions for the aerospace industry. Referring to specific customer projects several of these cases are examined to outline the advantages of using Laser Shearography for automated defect detection.
>

FD800 Bench Top Flaw Detectors

The bench-top FD800 flaw detector range combines state-of-the-art flaw detection with advanced mater
...
ial thickness capabilities. Designed for use in the laboratory these gauges are the tool you need for all your flaw detecting needs.
>

TOPAZ® 64: Fully Integrated Portable 64 Channel PAUT Instrument with FMC & TFM

Introducing TOPAZ64, the industry’s most intelligent fully integrated, portable 64-channel phased
...
array ultrasound (UT) instrument. TOPAZ64 combines code-compliant phased array UT with the industry’s most advanced full matrix capture (FMC) and total focusing method (TFM) capabilities. Featuring the highest acquisition frequency in its class, high resolution FMC and a 12” multi-touchscreen, users can easily visualize even the smallest flaws. TOPAZ64 can generate a bipolar pulse that provides more acoustic energy versus previous models for punching through thick components. The result is a portable tool that delivers increased inspection coverage, more accurate signals, and the ability to handle all UT inspections in one package. TOPAZ64 is ideal for challenging applications in transportation, oil and gas, manufacturing and power generation.
>

YXLON Cougar EVO

Scalable small footprint X-ray inspection systems for assembly and laboratory applications. The
...
YXLON Cougar EVO series was designed to provide the "best-in- class" inspection solutions for SMT, semiconductor, and laboratory assembly applications, while maintaining a small system footprint for maximum convenience. With optimized software and hardware, these systems produce higher quality and more consistent results than other electronics inspection systems currently on the market.
>

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