GEKKO APPLICATIONS CH


 
Intended for industries such as aerospace, metallurgy, oil & gas, power generation and automotive, GEKKO covers a wide range of applications from corrosion mapping to crack detection and characterization in welded pipes and plates. Thanks to its advanced features, GEKKO can handle thick components, detect and characterize misoriented defects. Superimposition of CAD files to ultrasonic data helps the operators interpret measurements and lowers the rate of false alarms.

WELD INSPECTION

GEKKO FOR WELD INSPECTION

 

With multiple skip weld overlay and 64 elements, GEKKO can inspect from very thin to very thick samples while maintaining superior resolution and greater SNR. With up to 2 048 delay laws and 8 groups, GEKKO can combine TOFD and PA in a single pass to achieve significant reduction in inspection time.

NOZZLE INSPECTION

Uniquely compatible with up to 3-axis commercial scanners and with the possibility to define nozzle on-board, GEKKO is to be used for encoded nozzle inspections. The true-distance mapping of indications helps locating and sizing indications.

HIGH TEMPERATURE HYDROGEN ATTACK (HTHA)

GEKKO for HIGH TEMPERATURE HYDROGEN ATTACK (HTHA)

 

Hydrogen blistering characterization; HTHA High temperature hydrogen attack inspection.

HYDROGEN INDUCED CRACKING (HIC)

GEKKO for HYDROGEN INDUCED CRACKING (HIC)

 

Hydrogen blistering characterization; HIC Small defect detection for carbon steel specimen inspection.
©Comex

ACRYLIC GLASS INSPECTION

This video shows an electronic scanning of a PMMA (polymethyl methacrylate also called acrylic glass) plate using the flaw detector GEKKO, a 5 Mhz probe by Imasonic and the Bras Matryx scanner from Ekoscan.
©M2M China

CORROSION INSPECTION

Mapping improvement with TFM. The dead zone is reduced: corrosion detection till 1mm under the surface, and the full description of the corroded profile for more accurate measurements.
©Institut de Soudure

 

SCREW THREAD INSPECTION

GEKKO tfm

 

27-mm long screw thread inspection with TFM technique. Optimal resolution is obtained along the thread.
Probe: PA, 5 MHz, 64 elements and a Pitch of 1.8mm.
©Karl Deutsch

INCONEL WELD-INSPECTION

GEKKO FOR INCONEL WELD-INSPECTION

Using Total Focusing Method (TFM) for the inspection of inconel weld, a extended vizualisation area is obtained. Defects are detected close to the top and bottom surfaces.
©Karl Deutsch

CHARACTERIZATION OF MISORIENTED DEFECT

GEKKO FOR CHARACTERIZATION OF MISORIENTED DEFECT

Tilted defect reconstruction with TFM technique and mode conversion with a probe of 5 Mhz, 64 elements, and a S wedge.

AICRAFT COMPONENT INSPECTION

GEKKO FOR AICRAFT COMPONENT INSPECTION

 

Effect of the aperture on the SNR

Let's look at the detection of a fatigue crack (roughly a triangular shape 2-mm side) initiated at the borehole of a titanium beta component. The grain size is between 0.5 and 1.5 mm.

We compare apertures of 64, 32 and 16 elements all focused along the borehole at 65 mm. The probe is a 5 MHz, 64 elements, pitch 0.6 m. We use a multi-group configuration on the Gekko (64 elements on the left, 32 in the middle and 16 on the right).

Read more

FIELD INSPECTION OF A NOZZLE

GEKKO FOR FIELD INSPECTION OF A NOZZLE

 

The Gekko offers the possibility to define on-board a nozzle component by simply entering the characteristics of the vessel and the nozzle (thickness, radius, angles).

Scan plans can be defined on the equipment to describe the motion of the transducer around the nozzle for either an encoded inspection with a scanner (using up to three axis: rotation, translation and skew) or a manual one.

Read more

COMPOSITES INSPECTION

Composite inspection using 3-axis encoded scanner.
The Gekko is the only portable unit compatible with 3-axis scanners making it possible to use with mouse type scanner for very fast scanning of large plates.

Watch the video on Youtube

SMALL DIAMETER PIPE INSPECTION

GEKKO for PIPES INSPECTION

 

In this case, a cylindrical reconstruction is being done for small diameter pipe inspection using sizing with corner effect mode (TTT) for better defect sizing. Both TFM technique and sectorial scan are illustrated.
For outside diameter defects, both modes account for the rebound off the inner curved-surface to display a scaled image.

SKEWED DEFECT DETECTION

GEKKO for SKEWED DEFECT DETECTION

Use of matrix probe with sectorial scanning along various planes perfect for the detection of skewed defects.

ELLIPTICAL FATIGUE CRACK INSPECTION

GEKKO FOR FATIGUE CRACK INSPECTION

True imaging of 2-MM ELLIPTICAL FATIGUE CRACK
- Sizing of defects possible even without a diffraction signal
- True-shape imaging of defects

BLADE INSPECTION WITH HALF-SKIP TFM

GEKKO FOR BLADE INSPECTION WITH HALF-SKIP TFM

TFM and superimposition of a CAD file to ease the inspection diagnostic. The inspection has been carried using a 5 MHz probe of 64 elements, a pitch of 0.6mm and a wedge of 55° shear waves.

FRICTION STEEL WELD (FSW) INSPECTION USING TFM

GEKKO FOR FRICTION STEEL WELD (FSW) INSPECTION USING TFM

 

A T-joint is welded using a FSW process. The sample contains a 0.2 mm side-drilled located between the two welds for calibration and a 3-mm high, 1-mm long EDM notch.

We use a 10-MHz array from flange opposite web and compare a linear scanning using an aperture of 8 elements focused along the backwall (on the left) to a TFM inspection (on the right). For both cases we set the gain to have a 80% screen height for the side-drilled hole and we superimpose a dxf overlay of the component in the Gekko (white lines in the following images).

Read more