AEROSPACE PT


METALS INSPECTION

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).

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STIFFENER INSPECTION

AICRAFT COMPONENT INSPECTION

 

Crack detection in T-section stiffeners is a recurrent problem for aircraft manufacturers. In many cases, access to the stiffener is not easy and the complete top surface is not necessarily accessible. In the most common T-section configuration, there is a corner piece that cannot be removed for the inspection that restricts access and prevents the NDT inspector from using a simple procedure with a conventional probe.

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POROSITY DETECTION IN COARSE TITANIUM COMPONENT

Using large aperture and TFM method allows to detect small porosities (0.5 mm) in electron beam welded titanium components with grain size of 0.5 -1.5 mm with very little sensitivity to positioning.

 

FASTENER-HOLE INSPECTION

NDT AICRAFT COMPONENT INSPECTION

 

In the aerospace industry, detecting the cracks that sometimes develop around fastener holes is a major issue for aircraft maintenance and life extension. Parts undergoing inspection are usually made of an aluminum alloy and typically have a complex geometry. Their thickness varies from 0.5 to 2 inches.

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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).

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THICK PLATE INSPECTION

The inspection of thick plates of large dimensions is a productivity challenge. While satisfying high-resolution requirements for defect detection and sizing (AA class, aerospace grade), the inspection speed must also satisfy production requirements.

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COMPOSITES INSPECTION

INDUSTRIAL SYSTEM FOR COMPOSITES INSPECTION USING SAUL (SURFACE ADAPTIVE ULTRASOUND)

saul composite inspection_logo stelia

The SAUL technique enables the transmission of an incident wave-front parallel to any complex surface. One specimen presenting variable geometries (flat, concave or convex surfaces) can be entirely controlled using a unique probe (such as a matrix array with a flat active aperture). The real-time adaptive processing is illustrated through measurements obtained with typical aircraft composite structures (e.g., CFRP stringers, stiffeners).

SAUL technique

COMPOSITES INSPECTION

GEKKO for COMPOSITES INSPECTION

 

Composite inspection using 3-axis encoded scanner.
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.
This video shows how to perform a large cartography of composite components without the need to do raster scan; the acquisition is like painting the part with the probe.

GEKKO data files can be up to 10 Gb.

Watch the video on Youtube

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ROBOTIC INSPECTION OF COMPOSITES SECTIONS

robotic inspection  of composites section

USA

 

APPLICATIONS CASES USING PORTABLE FLAW DETECTOR GEKKO

 

GEKKO_v1.4_TRL

 

APPLICATION CASES USING INDUSTRIAL INSTRUMENTATION MULTIX++

 

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