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Sensor measures sub-surface flaws

: Noll, R.; Krauhausen, M.

Opto and Laser Europe : OLE (1993), Nr.5, S.39-41 : Abb.
ISSN: 0966-9809
Fraunhofer ILT ()
deformation; detection; holography; interferometry; polymer; rubber-metal; sensor

It is notoriously difficult to detect and measure faults below the surface of composite materials, such as carbon-fibre reinforced flaps for aircraft, radial tyres for lorries, and even sports shoes. Now a prototype laser-assisted inspection system can find and map hidden defects in vehicle tyres, dashboards and rubber-metal objects such as valves for tubeless tyres. The technology can cut the cost of quality inspections by 90 %.