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Validation of two different analysis techniques to obtain dynamic mechanical properties of concrete using a modified Hopkinson Bar.

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Title: Validation of two different analysis techniques to obtain dynamic mechanical properties of concrete using a modified Hopkinson Bar.
Authors: Rey-de-Pedraza, V.1 (AUTHOR) v.rey@upm.es, Ruiz-Ripoll, M.L.2 (AUTHOR), Roller, C.2 (AUTHOR), Cendón, D.A.1 (AUTHOR), Gálvez, F.1 (AUTHOR)
Source: International Journal of Impact Engineering. Mar2022, Vol. 161, pN.PAG-N.PAG. 1p.
Subjects: Fracture strength, Tensile strength, Concrete, Strain rate, Concrete fractures
Abstract: • The interest in the Hopkinson Bar technique can be appreciated in the variety of test configurations developed. • The firing system used, length and geometry of the bars, instrumentation and recorded data, opens a broadband of results and interpretations. • A compared study over tensile and fracture energy tests is carried confronting two methodologies to check the validity of the results predicted. • The influence of the projectile shape in the procedure and results is also critical and must be analysed. In the present work, two different approaches for obtaining dynamic fracture properties of concrete are analyzed. Spalling tests over cylindrical samples using a modified Hopkinson Bar were carried to measure the tensile strength and the fracture energy of conventional concrete. Results for strain rates ranging from 60 to 130 s − 1 are presented for both techniques and compared to the respective quasi-static values. Moreover, two different projectile shapes (cylindrical and conical) have also been evaluated. In this sense, a deep qualitative and quantitative analysis is also performed, regarding the variations in tensile stress evolution of the pulses. Validation of both methodologies is achieved by comparing the obtained results. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Impact Engineering is the property of Pergamon Press - An Imprint of Elsevier Science 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: 154505606
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Label: Title
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  Data: Validation of two different analysis techniques to obtain dynamic mechanical properties of concrete using a modified Hopkinson Bar.
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  Data: <searchLink fieldCode="AR" term="%22Rey-de-Pedraza%2C+V%2E%22">Rey-de-Pedraza, V.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> v.rey@upm.es</i><br /><searchLink fieldCode="AR" term="%22Ruiz-Ripoll%2C+M%2EL%2E%22">Ruiz-Ripoll, M.L.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Roller%2C+C%2E%22">Roller, C.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cendón%2C+D%2EA%2E%22">Cendón, D.A.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gálvez%2C+F%2E%22">Gálvez, F.</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Impact+Engineering%22">International Journal of Impact Engineering</searchLink>. Mar2022, Vol. 161, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Fracture+strength%22">Fracture strength</searchLink><br /><searchLink fieldCode="DE" term="%22Tensile+strength%22">Tensile strength</searchLink><br /><searchLink fieldCode="DE" term="%22Concrete%22">Concrete</searchLink><br /><searchLink fieldCode="DE" term="%22Strain+rate%22">Strain rate</searchLink><br /><searchLink fieldCode="DE" term="%22Concrete+fractures%22">Concrete fractures</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: • The interest in the Hopkinson Bar technique can be appreciated in the variety of test configurations developed. • The firing system used, length and geometry of the bars, instrumentation and recorded data, opens a broadband of results and interpretations. • A compared study over tensile and fracture energy tests is carried confronting two methodologies to check the validity of the results predicted. • The influence of the projectile shape in the procedure and results is also critical and must be analysed. In the present work, two different approaches for obtaining dynamic fracture properties of concrete are analyzed. Spalling tests over cylindrical samples using a modified Hopkinson Bar were carried to measure the tensile strength and the fracture energy of conventional concrete. Results for strain rates ranging from 60 to 130 s − 1 are presented for both techniques and compared to the respective quasi-static values. Moreover, two different projectile shapes (cylindrical and conical) have also been evaluated. In this sense, a deep qualitative and quantitative analysis is also performed, regarding the variations in tensile stress evolution of the pulses. Validation of both methodologies is achieved by comparing the obtained results. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Impact Engineering is the property of Pergamon Press - An Imprint of Elsevier Science 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:
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      – Type: doi
        Value: 10.1016/j.ijimpeng.2021.104107
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      – Code: eng
        Text: English
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        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Fracture strength
        Type: general
      – SubjectFull: Tensile strength
        Type: general
      – SubjectFull: Concrete
        Type: general
      – SubjectFull: Strain rate
        Type: general
      – SubjectFull: Concrete fractures
        Type: general
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      – TitleFull: Validation of two different analysis techniques to obtain dynamic mechanical properties of concrete using a modified Hopkinson Bar.
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              Text: Mar2022
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              Y: 2022
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