The MIRA 3D Tomographer is a state-of-the-art instrument for creating a 3D representation of internal defects that may be present in a concrete element.
The MIRA 3D is the advanced version of the well-known, state-of-the-art, MIRA Ultrasound Tomographer for depth measurements and flaws detection in elements of concrete structures. It incorporates the Full-Matrix-Capture (FMC) data collection technique and Total Focusing Method (TFM) processing algorithm to compute the data acquired and directly reconstruct 3D images of the reflecting interfaces within the volume of the object below the antenna at each test position. This “true 3D tomography” system provides greater imaging resolution and precision.
For better and faster scan coverage, the instrument can be extended with a second antenna array. This enlarged version is the MIRA 3D PRO.
Features:
- Independent Pulser-Receiver channel in each probe.
- Real-time 3D-image in each instrument position.
- Open-Crack depth Sizing Functionality (Detecting and measuring the crack tip location).
- Modular design (Flexible combination of 2 and more array units).
- Single version with 32 transducers.
- Double (PRO) version with 64 transducers.
Applications:
- Thickness measurement
- Detection of voids and honeycombing in concrete elements
- Detection of voids in grouted tendon ducts
- Detection of poor-quality bond in overlays and repairs
- Detection of delaminations
- Detection of lack of support behind tunnel linings and below slabs on grade.
- Ultrasonic pulse echo tomographer.
Specifications:
- Active dry point contact (A-DPC), shear-wave transducers with wear-resistant ceramic tips and integrated pulser-receiver electronics
- Spring loaded, 32 transducers, wireless, light and compact antenna array. Extendable to 64 transducers (MIRA 3D PRO)
- The spring-loaded transducers conform to irregular surfaces, and they do not require a coupling medium, that is, testing is done in the dry
- Positioning laser beams in the antenna to facilitate its centering during scanning
- 10 to 100 kHz working frequency range
- Nominal frequency = 50 kHz
- Ultrasound speed range: 1,000 to 4,000 m/s (shear wave)
- Dimensions without handles and weight: 200 × 125 × 100 mm, 3.5 kg
- (400 x 125 x 100 mm, 5.6 kg for MIRA 3D PRO)
- Testing depth: 20 to 3,000 mm, depending on the concrete quality, member’s lateral dimensions and amount of steel reinforcement
- (20 to 4,000 mm for MIRA 3D PRO)
- Rechargeable battery, 10 h operating life
- USB interface
- 3-D tomographic display in a PC with IntroView software
- Operating conditions: -10 °C to 50 °C, < 95% RH
- Error of the depth of a defect, mm, where H is the measured depth = ± (0.05 ∙ H + 10)
- Ultrasonic pulse echo tomographer