A Novel Multi-Axial Pressure Sensor Probe for Measuring Triaxial Stress States Inside Soft Materials
This paper presents the concept, design, construction, and validation of a novel probe based on the hexadic disposition of six pressure sensors suitable for measuring triaxial stress states inside bulky soft materials. The measurement of triaxial stress states inside bulk materials such as brain tis...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-05-01
|
| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/21/10/3487 |
| _version_ | 1797533794497986560 |
|---|---|
| author | Giuseppe Zullo Anna Leidy Silvestroni Gianluca Candiotto Andrey Koptyug Nicola Petrone |
| author_facet | Giuseppe Zullo Anna Leidy Silvestroni Gianluca Candiotto Andrey Koptyug Nicola Petrone |
| author_sort | Giuseppe Zullo |
| collection | DOAJ |
| description | This paper presents the concept, design, construction, and validation of a novel probe based on the hexadic disposition of six pressure sensors suitable for measuring triaxial stress states inside bulky soft materials. The measurement of triaxial stress states inside bulk materials such as brain tissue surrogates is a challenging task needed to investigate internal organs’ stress states and validate FE models. The purpose of the work was the development and validation of a 17 × 17 × 17 mm probe containing six pressure sensors. To do so, six piezoresistive pressure sensors of 6 mm diameter were arranged into an hexad at three cartesian axes and bisecting angles, based on the analytical solution of the stress tensor. The resulting probe was embedded in a soft silicone rubber of known characteristics, calibrated under cyclic compression and shear in three orientations, and statically validated with combined loads. A calibration matrix was computed, and validation tests allowed us to estimate Von Mises stress under combined stress with an error below 6%. Hence, the proposed probe design and method can give indications about the complex stress state developing internally to soft materials under triaxial high-strain fields, opening applications in the analysis of biological models or physical surrogates involving parenchyma organs. |
| first_indexed | 2024-03-10T11:19:42Z |
| format | Article |
| id | doaj.art-14ca534033954f8e85f4714375dfccb8 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T11:19:42Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-14ca534033954f8e85f4714375dfccb82023-11-21T20:05:23ZengMDPI AGSensors1424-82202021-05-012110348710.3390/s21103487A Novel Multi-Axial Pressure Sensor Probe for Measuring Triaxial Stress States Inside Soft MaterialsGiuseppe Zullo0Anna Leidy Silvestroni1Gianluca Candiotto2Andrey Koptyug3Nicola Petrone4Department of Industrial Engineering, University of Padua, Via Venezia 1, 35131 Padua, ItalyDepartment of Industrial Engineering, University of Padua, Via Venezia 1, 35131 Padua, ItalyDepartment of Industrial Engineering, University of Padua, Via Venezia 1, 35131 Padua, ItalyDepartment of Quality and Mechanical Engineering, Mid Sweden University, Campus Östersund Kunskapens väg 8, SE-831 25 Östersund, SwedenDepartment of Industrial Engineering, University of Padua, Via Venezia 1, 35131 Padua, ItalyThis paper presents the concept, design, construction, and validation of a novel probe based on the hexadic disposition of six pressure sensors suitable for measuring triaxial stress states inside bulky soft materials. The measurement of triaxial stress states inside bulk materials such as brain tissue surrogates is a challenging task needed to investigate internal organs’ stress states and validate FE models. The purpose of the work was the development and validation of a 17 × 17 × 17 mm probe containing six pressure sensors. To do so, six piezoresistive pressure sensors of 6 mm diameter were arranged into an hexad at three cartesian axes and bisecting angles, based on the analytical solution of the stress tensor. The resulting probe was embedded in a soft silicone rubber of known characteristics, calibrated under cyclic compression and shear in three orientations, and statically validated with combined loads. A calibration matrix was computed, and validation tests allowed us to estimate Von Mises stress under combined stress with an error below 6%. Hence, the proposed probe design and method can give indications about the complex stress state developing internally to soft materials under triaxial high-strain fields, opening applications in the analysis of biological models or physical surrogates involving parenchyma organs.https://www.mdpi.com/1424-8220/21/10/3487pressure sensorstress stateshear stresssoft materialstissue surrogates |
| spellingShingle | Giuseppe Zullo Anna Leidy Silvestroni Gianluca Candiotto Andrey Koptyug Nicola Petrone A Novel Multi-Axial Pressure Sensor Probe for Measuring Triaxial Stress States Inside Soft Materials Sensors pressure sensor stress state shear stress soft materials tissue surrogates |
| title | A Novel Multi-Axial Pressure Sensor Probe for Measuring Triaxial Stress States Inside Soft Materials |
| title_full | A Novel Multi-Axial Pressure Sensor Probe for Measuring Triaxial Stress States Inside Soft Materials |
| title_fullStr | A Novel Multi-Axial Pressure Sensor Probe for Measuring Triaxial Stress States Inside Soft Materials |
| title_full_unstemmed | A Novel Multi-Axial Pressure Sensor Probe for Measuring Triaxial Stress States Inside Soft Materials |
| title_short | A Novel Multi-Axial Pressure Sensor Probe for Measuring Triaxial Stress States Inside Soft Materials |
| title_sort | novel multi axial pressure sensor probe for measuring triaxial stress states inside soft materials |
| topic | pressure sensor stress state shear stress soft materials tissue surrogates |
| url | https://www.mdpi.com/1424-8220/21/10/3487 |
| work_keys_str_mv | AT giuseppezullo anovelmultiaxialpressuresensorprobeformeasuringtriaxialstressstatesinsidesoftmaterials AT annaleidysilvestroni anovelmultiaxialpressuresensorprobeformeasuringtriaxialstressstatesinsidesoftmaterials AT gianlucacandiotto anovelmultiaxialpressuresensorprobeformeasuringtriaxialstressstatesinsidesoftmaterials AT andreykoptyug anovelmultiaxialpressuresensorprobeformeasuringtriaxialstressstatesinsidesoftmaterials AT nicolapetrone anovelmultiaxialpressuresensorprobeformeasuringtriaxialstressstatesinsidesoftmaterials AT giuseppezullo novelmultiaxialpressuresensorprobeformeasuringtriaxialstressstatesinsidesoftmaterials AT annaleidysilvestroni novelmultiaxialpressuresensorprobeformeasuringtriaxialstressstatesinsidesoftmaterials AT gianlucacandiotto novelmultiaxialpressuresensorprobeformeasuringtriaxialstressstatesinsidesoftmaterials AT andreykoptyug novelmultiaxialpressuresensorprobeformeasuringtriaxialstressstatesinsidesoftmaterials AT nicolapetrone novelmultiaxialpressuresensorprobeformeasuringtriaxialstressstatesinsidesoftmaterials |