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 -

Airstar Inc.
Application of the newest technologies, such as air-coupled ultrasound, digital instrumentation, signal processing, and transducer technology.

607 views
Technical Discussions
Mirham Abdallah Barakat
Mirham Abdallah Barakat
02:02 Sep-16-2000
relation between the gain of the pulser-receiver and the echo amplitude

I had made experiment showing the echo amplitude from a cylidrical
hole against the distance of the hole from the transducer
for various gain and the results showed that the echo amplitude
is inversely proportion to the gain but i haven't explanation
for this phenomena. Please if you have explanation
send it to me.

Thank you
Mirham



    
 
 
Dipl.-Ing. Martin Heinz
Dipl.-Ing. Martin Heinz
09:10 Sep-18-2000
Re: relation between the gain of the pulser-receiver and the echo amplitude
: I had made experiment showing the echo amplitude from a cylidrical
: hole against the distance of the hole from the transducer
: for various gain and the results showed that the echo amplitude
: is inversely proportion to the gain but i haven't explanation
: for this phenomena. Please if you have explanation
: send it to me.

: Thank you
: Mirham

Dear Mirham,

if you work with very high gain and the signal amplitude of the echo is very large it is possible that the receiver amplifier goes into saturation. In This case the echo seembs to be smaller.
Try reducing gain and look what happens.

Best regards,

Martin.



    
 
 
Udo Schlengermann
Consultant, -
Standards Consulting, Germany, Joined Nov 1998, 174

Udo Schlengermann

Consultant, -
Standards Consulting,
Germany,
Joined Nov 1998
174
09:17 Sep-18-2000
Re: relation between the gain of the pulser-receiver and the echo amplitude
s gain and the results showed that the echo amplitude
: is inversely proportion to the gain but i haven't explanation
: for this phenomena. Please if you have explanation
: send it to me.

: Thank you
: Mirham




    
 
 

Product Spotlight

High Resolution Industrial CT System for Small/Medium Size Parts Inspection

The YXLON FF35 CT computed tomography system is designed to achieve extremely precise inspection res
...
ults for a wide range of applications. Available in a single or dual tube configuration, it is perfect for very small to medium size parts inspection in the automotive, electronics, aviation, and material science industries.
>

Exertus Dual 120

The Exertus Dual 120 Projector has the ability to accept Iridium 192 sources or Selenium 75 source
...
s. This projector incorporates design and safety features that make it flexible, compact and lightweight. The Projector is lighter than most of its competitors. It incorporates an improved source channel, based on a new helicoidal design, which makes maintenance easier. The helicoidal design also allows smoother movement of the source assembly inside the device, making it easier for the operator and improving safety. The Projector also has a unique safety feature not found in competitive products. The source assembly locking mechanism is triggered by the source holder capsule at the front of the source assembly, thereby always assuring the operator that the source has returned to the safe position. The Exertus Dual 120 is ISO3999:2004 compliant.
>

Conformable wedge transducer

The conformability is obtained with a flexible membrane filled with water between the transducer and
...
the inspected component. The coupling between the membrane and the component requires a small quantity of water or couplant. The conformable wedge combines the acoustic performance of immersion technique with good coupling and low attenuation.
>

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
s