Application Testing for concealed cracks in an aluminum rivet structure The MDK probe is a low-frequency probe in a multi-differential circuit. It is designed to recognize cracks extending outward from rivet bores without having to remove the rivet itself. The frequency range lies between 100 Hz and 100 kHz and its penetration depth in aluminum is 5 mm. Test pieces with defined cracks are required in order to adjust the settings. Changes in distance arising from bulges and deviations in lacquer coats are suppressed. The adjustable guide block enables the probe to be moved over the edges of the sheet. Cracks starting from 2 mm in length can be recognized in the 2nd and 3rd level of depth. MDK 1-23 multi-differential probe Application: Testing of multi-layered aluminum rivet joints in aircraft structures for concealed cracks, preferably by hand, without removing the rivet. Suppression of bulges, deviations in the coats of lacquer and changes in distance of the positions, high crack detection during rapid testing. * equivalent to MBB048-3 or MBB503-2 Can be used with guide block A0M 006 0008 002 05 1. Probe system: Multi-differential ferrite core with a 23 mm base distance, transformer-like Frequency range: 100 Hz - 100 kHz Active range: Approx. 25 mm Penetration depth: Approx. 5 mm in aluminum Technical data Cable: EK-X-HF Housing: Aluminum, anodized, housing #1 Dimensions: 34 x 34 x 43 mm Weight: 100 g Order data: ASP41700 www.rohmann.de • E-Mail: info@