
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.