Innovative Production Machines and Systems Conference

Authors: Prof. Friedrich-Wilhelm Bach, Dr. Wilfried Reimche, Mr. Gregor Mroz

Abstract

During the life cycle of a product's components, attribution problems arise owing to insufficient product
information. Moreover despite regular product maintenance, unforeseen component failure leads to operational
breakdowns and, to some extent, to endangering people and the environment.
An inherent component tagging is implemented by locally changing the microstructural properties using local heat
treatment. By this means, information about the component can be inherently stored in coded form at the component's
edge region.
To detect and store the component's load history subjected to static and dynamic stresses, so-called sensor materials
are suitable which exhibit load dependent microstructural transformations; such materials are austenitic manganese
steels and chrome-nickel steels which form stress or deformation induced martensitic microstructures under loading.
Regarding component identification, the development of a high resolution sensor technology based on eddy-currents
and harmonic analyses is presented for the detection and characterisation of locally introduced microstructural
changes in the component's edge region.
A sensor technology was developed for the acquisition and evaluation of the component's endured loading history,
subject to bending, tortional and multiaxial loads, as a function of the loading and number of load reversals. Using
this technology with a surface scan, a component's integral region and its local condition can be monitored with
regard to the endured stresses and can also be evaluated as a function of the sensor material's properties.

Attachment	Size
Acquisition of Discrete Component....wmv	14.96 MB

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