Boundary corrected calibration of tactile pressure sensors

A. Tessari, T. Abdoun, I. Sasanakul, E. Wroe

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Assessing the forces generated in soil is an important step in geotechnical engineering and it provides valuable insight into local and global behaviour of foundation systems. Capturing this type of data in a physical model is challenging due to a physical limitations of traditional diaphragm-based pressure sensors. Tactile pressure sensors produce a matrix of force readings and have been used extensively in physical modelling over the last decade. In order to produce accurate results, the sensors must be calibrated using a known applied force through a material with similar compliance to the testing medium. Improperly matched compliance will produce severe under- or over-reading of the applied pressures. Furthermore, since many applications will involve particulate soil, the number of contacts per sensel must be simulated properly. The sensors are statically calibrated using a simple technique that replicates the exact boundary conditions that they will experience in a model. The results are compared to calibrations performed in-situ on a geotechnical centrifuge.

Original languageEnglish (US)
Title of host publicationPhysical Modelling in Geotechnics - Proceedings of the 8th International Conference on Physical Modelling in Geotechnics 2014, ICPMG 2014
PublisherTaylor and Francis - Balkema
Pages331-336
Number of pages6
ISBN (Print)9781138022218
DOIs
StatePublished - 2014
Event8th International Conference on Physical Modelling in Geotechnics, ICPMG 2014 - Perth, WA, Australia
Duration: Jan 14 2014Jan 17 2014

Publication series

NamePhysical Modelling in Geotechnics - Proceedings of the 8th International Conference on Physical Modelling in Geotechnics 2014, ICPMG 2014
Volume1

Other

Other8th International Conference on Physical Modelling in Geotechnics, ICPMG 2014
CountryAustralia
CityPerth, WA
Period1/14/141/17/14

ASJC Scopus subject areas

  • Geochemistry and Petrology

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    Tessari, A., Abdoun, T., Sasanakul, I., & Wroe, E. (2014). Boundary corrected calibration of tactile pressure sensors. In Physical Modelling in Geotechnics - Proceedings of the 8th International Conference on Physical Modelling in Geotechnics 2014, ICPMG 2014 (pp. 331-336). (Physical Modelling in Geotechnics - Proceedings of the 8th International Conference on Physical Modelling in Geotechnics 2014, ICPMG 2014; Vol. 1). Taylor and Francis - Balkema. https://doi.org/10.1201/b16200-41