Dayu Shear Wave Transducer DYZ-50-01E: Accurately Detecting Concrete Crack Depth and Internal Voids

In the field of non-destructive testing of concrete structures, promptly detecting internal defects such as cracks, voids, and honeycombing is key to ensuring project quality and safety. The Dayu Electronics Shear Wave Transducer DYZ-50-01E, based on ultrasonic shear wave testing principles, provides a reliable and efficient internal quality assessment solution for concrete structures.

Testing Principle

The DYZ-50-01E employs ultrasonic testing methods. When ultrasonic waves propagate through concrete, parameters such as wave velocity, amplitude, and dominant frequency undergo significant changes upon encountering cracks, voids, or loose media. The transducer emits shear wave pulses and receives the signals after they pass through the concrete. By analyzing anomalies in these parameters, the location, type, and severity of defects can be inferred.

Detectable Defect Types

This transducer is suitable for various concrete defect detection scenarios, including:

Crack Depth: Quantitatively assess the depth of surface-opening cracks

Internal Voids: Detect honeycombing, holes, and other internal cavity defects

Honeycombing Zones: Identify loose areas caused by insufficient vibration or segregation

Interface Quality: Evaluate bond conditions at new-to-old concrete interfaces or construction joints

The working frequency range of the DYZ-50-01E is 20 kHz to 100 kHz. An appropriate frequency can be selected based on the concrete aggregate size and testing distance (low frequencies offer strong penetration, while high frequencies provide high resolution). During use, a coupling agent (ultrasonic coupling gel) must be applied to eliminate air between the transducer and the concrete surface, ensuring effective transmission of acoustic energy into the member.

To fully cover the test area, it is recommended to combine three testing methods:

Direct Transmission: Two transducers are placed on opposite sides of the member, suitable for through-thickness testing

Angled Transmission: Transducers are arranged at an angle to locate inclined defects

Surface Transmission: Transducers are placed on the same side, suitable for crack depth and shallow surface defects

The Dayu Electronics DYZ-50-01E shear wave transducer features robust construction and stable signals, and is compatible with mainstream ultrasonic testing instruments. Whether in bridges, tunnels, building structures, or hydraulic engineering, it helps you quickly and accurately identify “invisible problems” within concrete. Choose Dayu to safeguard project quality.