NM01SMA470

The Sonatest SMA4-70 is a small, single element angle beam shear wave contact transducer designed for effective ultrasonic inspection at a refracted angle of 70 degrees in steel. Featuring a secure Lemo 00 connector for reliable connection to your Sonatest or compatible instrument, this transducer operates at a nominal frequency of 4 MHz.  

The "small" designation in the SMA series indicates a compact 8mm x 9mm rectangular crystal. This smaller crystal size allows for inspection in tighter geometries and offers a more focused beam for detecting smaller reflectors. The 70-degree refracted angle is commonly used for detecting critical weld flaws, particularly those oriented near-vertical to the inspection surface, and for other specialized angled beam techniques.  

Key Features:

• Single Element, Angle Beam (Shear Wave): Designed to introduce a shear wave into the test material at a specific refracted angle.  

• Refracted Angle in Steel: 70 degrees - Ideal for detecting near-vertical flaws in welds and other applications.  

• Frequency: 4 MHz - Offers higher resolution for detecting smaller defects.  

• Small Crystal Size: 8mm x 9mm rectangular crystal allows for inspection in confined areas and provides a more focused beam.  

• Connector: Lemo 00 - Ensures a secure and reliable connection to compatible ultrasonic instruments.

• Manufacturer: Sonatest - A reputable manufacturer of high-quality ultrasonic testing equipment and transducers.

• Medium Damped: Typically medium damped for a good balance of sensitivity and bandwidth suitable for general-purpose flaw detection.  

Benefits:

• Excellent for Near-Vertical Flaw Detection: The 70-degree angle is highly effective for detecting critical weld flaws oriented close to the vertical plane.

• Good Resolution: The 4 MHz frequency allows for the detection of smaller discontinuities.

• Compact Size: The small crystal dimensions enable inspection in areas with limited access.

• Reliable Signal Coupling: Designed for direct contact testing with appropriate couplant.

• Secure Connection: The Lemo 00 connector ensures a stable and noise-free signal transmission.  

• Versatile Applications: Suitable for a range of angled beam inspections on various materials and components where access is restricted or high resolution for near-vertical flaws is needed.

Applications:

• Weld inspection, particularly for detecting lack of side wall fusion and vertical cracks.

• Inspection of castings and forgings for angled defects in confined areas.  

• Examination of pipes and tubes where access is limited.

• Flaw detection in a variety of materials requiring a high angle beam approach with good resolution.