Anoush Sepehri; Hamed Helisaz; Mu Chiao
Sensors and Actuators A: Physical 349 (2023), 114079; online 7 December 2022, not a newly published 2023 day. Official author research page links the final publisher PDF, distinct from the 2022 SSRN preprint. Original complete abstract copied from final PDF p.1. Section 2.1 p.3 specifies a polyurethane rod and unconfined axial compression; section 2.3 p.5 and Figure 2 establish Mach-1 force calibration. Prostate-phantom tests used a separate Actuonix L12 actuator. Thus no phantom, native prostate, stress-relaxation, shear or torsion categories are assigned to Mach-1 from the general capability description.
https://doi.org/10.1016/j.sna.2022.114079
9 citations · 4 en 2025–2026
Les titres, résumés et légendes des publications sont présentés en anglais.
The mechanical properties of tissues are highly correlated to the progression of various cancers. As a result, a reliable and robust method of characterizing soft material properties may be important for early cancer diagnosis in the future. Previous tactile sensors use conventional linear models to estimate the elastic properties of the tissue, thus overlooking the viscous component. We present a tactile sensor using fiber Bragg grating technology that is 15 mm in diameter for tissue palpation to characterize both the elastic and viscous properties of soft materials. We present a quasi-linear viscoelastic model that can be used in junction with the sensor to evaluate the viscoelastic properties of soft materials from ramp and hold compressions. To evaluate the proposed sensor and tissue model, we conducted palpation experiments on prostate phantoms with embedded cancerous nodules of various sizes. The results demonstrate that the sensor, equipped with the QLV model, can confidently identify the elastic and viscous properties of soft materials and can be an effective approach to distinguishing between cancerous and healthy tissue in the future.
Utilisation des équipements
Un Mach-1 V500CS équipé d’une cellule MA234 calibrait le capteur tactile par chargement axial de sa tige sensible en polyuréthane, suspendue pour permettre une compression non confinée. La palpation des fantômes de prostate utilisait ensuite un actionneur Actuonix L12 distinct du Mach-1.
Matériaux (1)
Caoutchouc et élastomère
Configurations de test (1)
