A time-domain reflectometry method for automated measurement of crack propagation in composites during mode I DCB testing under cold, hot, and hot/wet conditions.
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| Title: | A time-domain reflectometry method for automated measurement of crack propagation in composites during mode I DCB testing under cold, hot, and hot/wet conditions. |
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| Authors: | Abuobaid, A1 (AUTHOR) a.abuobaid@gmail.com, Heider, D2,3 (AUTHOR), Yarlagadda, S2 (AUTHOR) |
| Source: | Journal of Thermoplastic Composite Materials. Apr2019, Vol. 32 Issue 4, p558-573. 16p. |
| Subjects: | Time-domain reflectometry, Fracture toughness, Testing, Composite materials, Dielectric properties, Vinyl ester resins |
| Abstract: | This article describes an automated method for the measurement of crack initiation and propagation in composite materials during modeI double cantilever beam (DCB) testing under different environmental conditions. The method uses the time-domain reflectometry (TDR)-DCB system, which transmits a high-frequency pulse through a transmission line integrated within the composite test coupon and measures impedance discontinuities generated due to the presence of a crack. Using this system, real-time crack propagation in the specimen can be monitored, and the critical fracture toughness parameters (G IC) can be calculated in a variety of environmental conditions. TDR-DCB test method was used for the measurement of G IC for dry and wet (water-saturated) DCB samples made from E-glass fiber/vinyl ester composites under dry conditions (room temperature (RT) at 94°C) and wet conditions (RT at 60°C). For all test conditions, TDR signals showed that crack initiation and propagation was the dominant mechanism in identifying impedance changes in the material. Changes in dielectric properties of the specimen due to the test conditions, whether from water uptake, temperature, or a combination of the two, did not significantly affect signal quality. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Thermoplastic Composite Materials is the property of Sage Publications Inc. 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 |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 135822453 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: A time-domain reflectometry method for automated measurement of crack propagation in composites during mode I DCB testing under cold, hot, and hot/wet conditions. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Abuobaid%2C+A%22">Abuobaid, A</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> a.abuobaid@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Heider%2C+D%22">Heider, D</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yarlagadda%2C+S%22">Yarlagadda, S</searchLink><relatesTo>2</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Thermoplastic+Composite+Materials%22">Journal of Thermoplastic Composite Materials</searchLink>. Apr2019, Vol. 32 Issue 4, p558-573. 16p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Time-domain+reflectometry%22">Time-domain reflectometry</searchLink><br /><searchLink fieldCode="DE" term="%22Fracture+toughness%22">Fracture toughness</searchLink><br /><searchLink fieldCode="DE" term="%22Testing%22">Testing</searchLink><br /><searchLink fieldCode="DE" term="%22Composite+materials%22">Composite materials</searchLink><br /><searchLink fieldCode="DE" term="%22Dielectric+properties%22">Dielectric properties</searchLink><br /><searchLink fieldCode="DE" term="%22Vinyl+ester+resins%22">Vinyl ester resins</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: This article describes an automated method for the measurement of crack initiation and propagation in composite materials during modeI double cantilever beam (DCB) testing under different environmental conditions. The method uses the time-domain reflectometry (TDR)-DCB system, which transmits a high-frequency pulse through a transmission line integrated within the composite test coupon and measures impedance discontinuities generated due to the presence of a crack. Using this system, real-time crack propagation in the specimen can be monitored, and the critical fracture toughness parameters (G IC) can be calculated in a variety of environmental conditions. TDR-DCB test method was used for the measurement of G IC for dry and wet (water-saturated) DCB samples made from E-glass fiber/vinyl ester composites under dry conditions (room temperature (RT) at 94°C) and wet conditions (RT at 60°C). For all test conditions, TDR signals showed that crack initiation and propagation was the dominant mechanism in identifying impedance changes in the material. Changes in dielectric properties of the specimen due to the test conditions, whether from water uptake, temperature, or a combination of the two, did not significantly affect signal quality. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Thermoplastic Composite Materials is the property of Sage Publications Inc. 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.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1177/0892705718772873 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 16 StartPage: 558 Subjects: – SubjectFull: Time-domain reflectometry Type: general – SubjectFull: Fracture toughness Type: general – SubjectFull: Testing Type: general – SubjectFull: Composite materials Type: general – SubjectFull: Dielectric properties Type: general – SubjectFull: Vinyl ester resins Type: general Titles: – TitleFull: A time-domain reflectometry method for automated measurement of crack propagation in composites during mode I DCB testing under cold, hot, and hot/wet conditions. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Abuobaid, A – PersonEntity: Name: NameFull: Heider, D – PersonEntity: Name: NameFull: Yarlagadda, S IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 04 Text: Apr2019 Type: published Y: 2019 Identifiers: – Type: issn-print Value: 08927057 Numbering: – Type: volume Value: 32 – Type: issue Value: 4 Titles: – TitleFull: Journal of Thermoplastic Composite Materials Type: main |
| ResultId | 1 |
