New Perspectives on Self-Monitoring of Internal Rubber Failure Using Piezoresistivity
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28610%2F24%3A63589238" target="_blank" >RIV/70883521:28610/24:63589238 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
New Perspectives on Self-Monitoring of Internal Rubber Failure Using Piezoresistivity
Original language description
Carbon black (CB) fillers are widely used to enhance the ultimate strength and durability of rubber products. Interestingly, CBs are also electrically conductive, and at low filler concentrations, this property has been successfully exploited by researchers to monitor changes in the mechanical properties of rubber through piezoresistance evaluation.In this work, I investigated the piezoresistive response of deformed natural rubber (NR) filled with higher concentrations of CB, which are commonly encountered in rubber products subjected to dynamic loading conditions such as tires, conveyor belts, and vibration dampers. Our findings revealed that high CB content significantly decreases the piezoresistive signal, severely limiting the material's self-monitoring capability. Moreover, we observed unexpected and undesirable electromechanical phenomena, namely the precursor of shoulder peak phenomenon (PSPP) and shoulder peak phenomenon (SPP), which adversely affect electromechanical applications.However, these otherwise undesirable phenomena were ingeniously utilized for self-monitoring the rubber integrity during cyclic deformation. The gradual increase in residual strain, indicative of rubber matrix fatigue, was clearly correlated with changes in the experimentally detectable electrical resistance as a function of the precursor of shoulder peak phenomenon (PSPP) and the shoulder peak phenomenon (SPP).
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
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OECD FORD branch
20301 - Mechanical engineering
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů