Pressure-Dependent Mechanical Behavior and Surface Degradation of Fluorocarbon Elastomer (FKM): Insights into Structure–Property Relationships Under Hydrogen Exposure.
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| Title: | Pressure-Dependent Mechanical Behavior and Surface Degradation of Fluorocarbon Elastomer (FKM): Insights into Structure–Property Relationships Under Hydrogen Exposure. |
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| Authors: | Subedi, Nitesh1 (AUTHOR) nitesh.subedi@ou.edu, Corral, Alfredo Becerril1 (AUTHOR), Bhuiyan, Md Monjur Hossain1 (AUTHOR), Islam, Md Ariful1 (AUTHOR), Siddique, Zahed1 (AUTHOR) |
| Source: | Polymers (20734360). May2026, Vol. 18 Issue 10, p1253. 22p. |
| Subjects: | Mechanical behavior of materials, Fluoroelastomers, Strains & stresses (Mechanics), Microcracks, Polymer networks, Microstructure, Surface defects |
| Abstract: | This study investigates the pressure-dependent mechanical behavior and surface degradation of fluorocarbon elastomer (FKM, Viton®) O-ring seals following prolonged high-pressure hydrogen exposure. Specimens were aged at up to 7000 psi for 192 h and evaluated using tensile testing and optical image analysis. The results show a non-monotonic evolution of peak force, stiffness, and energy absorption, with increased load-bearing response at higher pressures accompanied by reduced displacement capacity. Normalized force–displacement behavior shows broadly similar loading profiles across pressure conditions; however, this representation is used for comparative visualization and does not establish preservation of the deformation mechanism. Image-based analysis reveals a significant increase in micro-defect density and surface heterogeneity with pressure, suggesting increased formation of surface micro-defects. These findings highlight pressure-dependent changes in polymer network response and surface morphology under hydrogen exposure. The study provides insights into structure–property relationships governing elastomer performance in hydrogen environments. [ABSTRACT FROM AUTHOR] |
| Copyright of Polymers (20734360) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 194117854 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Pressure-Dependent Mechanical Behavior and Surface Degradation of Fluorocarbon Elastomer (FKM): Insights into Structure–Property Relationships Under Hydrogen Exposure. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Subedi%2C+Nitesh%22">Subedi, Nitesh</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> nitesh.subedi@ou.edu</i><br /><searchLink fieldCode="AR" term="%22Corral%2C+Alfredo+Becerril%22">Corral, Alfredo Becerril</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bhuiyan%2C+Md+Monjur+Hossain%22">Bhuiyan, Md Monjur Hossain</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Islam%2C+Md+Ariful%22">Islam, Md Ariful</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Siddique%2C+Zahed%22">Siddique, Zahed</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Polymers+%2820734360%29%22">Polymers (20734360)</searchLink>. May2026, Vol. 18 Issue 10, p1253. 22p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Mechanical+behavior+of+materials%22">Mechanical behavior of materials</searchLink><br /><searchLink fieldCode="DE" term="%22Fluoroelastomers%22">Fluoroelastomers</searchLink><br /><searchLink fieldCode="DE" term="%22Strains+%26+stresses+%28Mechanics%29%22">Strains & stresses (Mechanics)</searchLink><br /><searchLink fieldCode="DE" term="%22Microcracks%22">Microcracks</searchLink><br /><searchLink fieldCode="DE" term="%22Polymer+networks%22">Polymer networks</searchLink><br /><searchLink fieldCode="DE" term="%22Microstructure%22">Microstructure</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+defects%22">Surface defects</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: This study investigates the pressure-dependent mechanical behavior and surface degradation of fluorocarbon elastomer (FKM, Viton®) O-ring seals following prolonged high-pressure hydrogen exposure. Specimens were aged at up to 7000 psi for 192 h and evaluated using tensile testing and optical image analysis. The results show a non-monotonic evolution of peak force, stiffness, and energy absorption, with increased load-bearing response at higher pressures accompanied by reduced displacement capacity. Normalized force–displacement behavior shows broadly similar loading profiles across pressure conditions; however, this representation is used for comparative visualization and does not establish preservation of the deformation mechanism. Image-based analysis reveals a significant increase in micro-defect density and surface heterogeneity with pressure, suggesting increased formation of surface micro-defects. These findings highlight pressure-dependent changes in polymer network response and surface morphology under hydrogen exposure. The study provides insights into structure–property relationships governing elastomer performance in hydrogen environments. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Polymers (20734360) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=194117854 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/polym18101253 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 22 StartPage: 1253 Subjects: – SubjectFull: Mechanical behavior of materials Type: general – SubjectFull: Fluoroelastomers Type: general – SubjectFull: Strains & stresses (Mechanics) Type: general – SubjectFull: Microcracks Type: general – SubjectFull: Polymer networks Type: general – SubjectFull: Microstructure Type: general – SubjectFull: Surface defects Type: general Titles: – TitleFull: Pressure-Dependent Mechanical Behavior and Surface Degradation of Fluorocarbon Elastomer (FKM): Insights into Structure–Property Relationships Under Hydrogen Exposure. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Subedi, Nitesh – PersonEntity: Name: NameFull: Corral, Alfredo Becerril – PersonEntity: Name: NameFull: Bhuiyan, Md Monjur Hossain – PersonEntity: Name: NameFull: Islam, Md Ariful – PersonEntity: Name: NameFull: Siddique, Zahed IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 05 Text: May2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 20734360 Numbering: – Type: volume Value: 18 – Type: issue Value: 10 Titles: – TitleFull: Polymers (20734360) Type: main |
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