Design and experimental testing of a tactile sensor for self-compensation of contact error in soft tissue stiffness measurement

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dc.contributor.authorErukainure, Frank Efeen
dc.contributor.authorParque, Victoren
dc.contributor.authorHassan, Mohsen A.en
dc.contributor.authorFathEl-Bab, Ahmed M. R.en
dc.date.accessioned2023-11-27T16:01:00Zen
dc.date.available2023-11-27T16:01:00Zen
dc.date.issued2022-10en
dc.date.updated2023-11-27T11:47:28Zen
dc.description.abstractThe measurement of viscoelastic properties of soft tissues has become a research interest with applications in the stiffness estimation of soft tissues, sorting and quality control of postharvest fruit, and fruit ripeness estimation. This paper presents a tactile sensor configuration to estimate the stiffness properties of soft tissues, using fruit as case study. Previous stiffness-measuring tactile sensor models suffer from unstable and infinite sensor outputs due to irregularities and inclination angles of soft tissue surfaces. The proposed configuration introduces two low stiffness springs at the extreme ends of the sensor with one high stiffness spring in-between. This study also presents a closed form mathematical model that considers the maximum inclination angle of the tissue’s (fruit) surface, and a finite element analysis to verify the mathematical model, which yielded stable sensor outputs. A prototype of the proposed configuration was fabricated and tested on kiwifruit samples. The experimental tests revealed that the sensor’s output remained stable, finite, and independent on both the inclination angle of the fruit surface and applied displacement of the sensor. The sensor distinguished between kiwifruit at various stiffness and ripeness levels with an output error ranging between 0.18 % and 3.50 %, and a maximum accuracy of 99.81 %, which is reasonable and competitive compared to previous design concepts.en
dc.description.versionAccepted versionen
dc.format.extentPages 5309-5324en
dc.format.extent16 page(s)en
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1007/s12206-022-0943-7en
dc.identifier.eissn1976-3824en
dc.identifier.issn1738-494Xen
dc.identifier.issue10en
dc.identifier.orcidErukainure, Frank [0000-0002-7640-391X]en
dc.identifier.urihttp://hdl.handle.net/10919/116694en
dc.identifier.volume36en
dc.language.isoenen
dc.publisherKorean Society for Mechanical Engineersen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectANSYS Mechanical APDLen
dc.subjectFruit quality and sortingen
dc.subjectKiwifruit elastic modulusen
dc.subjectKiwifruit tissue stiffnessen
dc.subjectSurface roughnessen
dc.subjectTactile sensingen
dc.subjectINDENTATION TESTSen
dc.subject40 Engineeringen
dc.subject4009 Electronics, Sensors and Digital Hardwareen
dc.subjectBioengineeringen
dc.subject4017 Mechanical engineeringen
dc.titleDesign and experimental testing of a tactile sensor for self-compensation of contact error in soft tissue stiffness measurementen
dc.title.serialJournal of Mechanical Science and Technologyen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.otherArticleen
dc.type.otherJournalen
pubs.organisational-group/Virginia Techen
pubs.organisational-group/Virginia Tech/Agriculture & Life Sciencesen
pubs.organisational-group/Virginia Tech/Agriculture & Life Sciences/Biological Systems Engineeringen
pubs.organisational-group/Virginia Tech/Graduate studentsen
pubs.organisational-group/Virginia Tech/Graduate students/Doctoral studentsen

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