High Frequency and Mobile Testing without Component Immersion

Speaker:
Szewieczek, A.; Ingenieurbüro Dr. Hillger Ultrasonic-Techniques; Germany

Authors:
Szewieczek, A.; Ingenieurbüro Dr. Hillger Ultrasonic-Techniques; Germany
Bühling, L.; Ingenieurbüro Dr. Hillger Ultrasonic-Techniques; Germany
Hillger, W.; Ingenieurbüro Dr. Hillger Ultrasonic-Techniques; Germany
Ilse, D.; Ingenieurbüro Dr. Hillger Ultrasonic-Techniques; Germany

ID: ECNDT-0103-2018
Download: PDF
Session: Aerospace 1
Room: G1
Date: 2018-06-12
Time: 11:10 - 11:30

Modern ultrasonic testing methods use frequencies up to 10 MHz. This proven and tested technique is used amongst others for CFRP components for aerospace structures. Although it enables the detection of small impacts and pore areas, a detailed examination of single pores and their distribution is hardly possible. For such applications a high frequency ultrasonic technique of 50 MHz and more is necessary.

High – frequency ultrasound testing is usually carried out in immersion technique in order to detect small defects such as pores or thin layers. The detection of a defect size starting at 50 μm (25 μm) is possible.

For the mobile high-resolution test, the coupling of the ultrasound at high frequencies was realized by means of a new local immersion technique. The new test adapter LIUS (Local Immersion for Ultrasonic) for the mobile scanning mechanics MUSE Z400 enables the application of immersion transducers with frequencies of more than 50 MHz.

The manipulation system reliably sucks to the component even on relatively rough surfaces. The immersion transducer guided over fast and precise linear axes has direct contact with the component via the water delay line, which prevents disturbing reflections and damping effects of a housing wall.