KALFOS - A Validation Facility for Strain Transfer Characterization of Surface-Applied Strain Sensors

2011-01-2606

10/18/2011

Event
Aerospace Technology Conference and Exposition
Authors Abstract
Content
Strain sensors embedded in or attached to structural components have to measure the real deformation of the structure over the whole period of use. The user must know how reliably installed sensors provide strain measurement results. For this purpose, test facilities or coupon tests are used. In order to characterize the strain transfer quality from the host structure into surface-applied strain sensors, a unique testing facility has been developed. This facility can be used both for fiber optic and resistance strain sensors. Originally developed for fiber Bragg grating based sensors, the KALFOS facility (= \bc\ba\blibration of \bfiber \boptic \bsensors) uses Digital Image Correlation (DIC) and Electronic Speckle Pattern Interferometer (ESPI) as unbiased referencing methods. It is possible to determine experimentally the strain transfer mechanism under combined thermal and mechanical loading conditions. This experimental characterization method will reveal weaknesses in commonly used strain sensors, and the investigation of the material systems used for fiber optic and other strain sensors (particularly the coating/substrate - adhesive combination). The KALFOS facility allows matching of specific measurement requirements with environmental conditions.
Meta TagsDetails
DOI
https://doi.org/10.4271/2011-01-2606
Pages
7
Citation
Habel, W., Kusche, N., Munzenberger, S., and Schukar, V., "KALFOS - A Validation Facility for Strain Transfer Characterization of Surface-Applied Strain Sensors," SAE Technical Paper 2011-01-2606, 2011, https://doi.org/10.4271/2011-01-2606.
Additional Details
Publisher
Published
Oct 18, 2011
Product Code
2011-01-2606
Content Type
Technical Paper
Language
English