How Sonoscan C-SAM® Technology Works


Time Domain Imaging (TDI)™
Utilizes an echo (amplitude & polarity) arrival ‘time’ as a reference, such as standard A-Scan, B-Scan and C-Mode type images.

How Sonoscan C-SAM® Technology Works

How Sonoscan C-SAM® Technology Works

Trusted by Top Multinational Companies

Sonoscan first pioneered the use of AMI for non-destructive testing and analysis, and continues to lead the industry today. The C-SAM® class of acoustic microscopes, under continuous improvement since 1984, embodies Sonoscan’s advanced expertise and proprietary technology.

Reflection Mode

C-SAM® has the ability to create images by generating a pulse of ultrasound, which is focused to a pinpoint spot. The pulse is sent into a sample and reflected off of interfaces. The frequency of the pulse and design of the lens are chosen to optimize spot size resolution and depth penetration for each application. In the reflection mode of operation the same transducer is used to send and receive the ultrasonic pulse. Return echoes arrive at different times based upon the depth of the reflecting feature and the velocity of sound in the materials. The operator positions an electronic gate to capture the depth of interest. The amount of ultrasound reflected at the interface is based on the differences in the materials at the interface. The more different the materials the more ultrasound reflected.

Transmission Mode

CSAM® also has the ability to create images based on how the ultrasound transmits through the entire sample thickness. Since air space defects such as voids, delaminations, cracks and porosity cannot transmit the ultrasound, the loss of transmitted signal indicates the presence of these types of defects. In addition, changes in the transmitted signal can provide evidence of changes in material properties. This data is often the key to determining variations in manufacturing processes.

Detailed Analysis. Optimum Display.

The echoes from each scan position are typically displayed as a brightness (echo amplitude) and as a color (echo polarity) in the image. An acoustic image can have more than 256 MegaPixels, depending on the size of the scan and the pixel density (resolution). Once the image is generated, the pixel values can be analyzed to determine conditions such as bond quality and material changes.