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 -

Hillger Ing. Büro
was founded in 1984 and develops special ultrasonic imaging systems for high-tech materials.

640 views
Technical Discussions
Riichi Murayama
Teacher, Professor
Fukuoka institute of technology, Japan, Joined May 2000, 1

Riichi Murayama

Teacher, Professor
Fukuoka institute of technology,
Japan,
Joined May 2000
1
03:52 Dec-17-2000
Velocity equation of cylindrical wave

Dear colleags,
Does anyone have any information on the velocity equations of
a cylindrical wave? I'm planning to research a cylyndrical wave using EMAT technique. If you would teach me any information about it, I would appreciate it.
Regards,
Riichi Murayama





    
 
 
Jim Barshinger
Engineering
General Electric Global Research Center, USA, Joined Aug 2000, 8

Jim Barshinger

Engineering
General Electric Global Research Center,
USA,
Joined Aug 2000
8
00:33 Dec-18-2000
Re: Velocity equation of cylindrical wave
The velocity equation can be developed from Navier's equation of motion performing the vector operations in cylindrical coordinates. You can reduce the equation into four uncoupled wave equations that are forms of Bessel's equation. Then you have to apply the appropriate boundary conditions. There are a number of references that address this. I would recommend the book "Wave motion in elastic solids" by Karl F. Graff as a starting point. It is currently published as a paperback by Dover books and is very inexpensive. Amazon.com should have it. You should also be able to find papers that address this type of problem, check the Journal of the Acoustical Society of America, and also IEEE transactions on ultrasonics ferroelectrics and frequency control.

Best Regards,
Jim



    
 
 

Product Spotlight

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.
>

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
>

AMIGO2

TSC Amigo2 - ACFM technology has developed a solid reputation for accurately detecting and sizing
...
surface-breaking cracks through paint and coatings. As the industry demands increased performance in speed, signal quality, and portability, it’s time for an evolution. It’s time for Amigo2.
>

Teletest Focus+

Teletest Focus+ electronics have superior capabilities than rivals on the market. Beyond the usual
...
test features, Focus+ has 24 transmit channels and 24 receive channels, with an additional on-board switching capabilities. The instrument's frequency range is 10–300 kHz.
>

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