The use of a coherent gradient sensor in dynamic mixed-mode fracture mechanics experiments

J. J. Mason; J. Lambros; A. J. Rosakis

doi:10.1016/0022-5096(92)80007-D

The use of a coherent gradient sensor in dynamic mixed-mode fracture mechanics experiments

J. J. Mason, J. Lambros, A. J. Rosakis

Research output: Contribution to journal › Article › peer-review

Abstract

The use of a coherent gradient sensing (CGS) apparatus is explored in dynamic fracture mechanics investigations. The ability of the method to quantify mixed-mode crack tip deformation fields accurately is tested under dynamic loading conditions. The specimen geometry and loading follow that of Lee and Freund who gave the theoretical and numerical mixed-mode K values as a function of lime for the testing conditions. The CGS system's measurements of K_I and K_II are compared with the predicted results, and good agreement is found. The method is used to measure K beyond the time domain of the known solution; it is seen that a shift from primarily mode II deformation to primarily mode I deformation occurs.

Original language	English (US)
Pages (from-to)	641-661
Number of pages	21
Journal	Journal of the Mechanics and Physics of Solids
Volume	40
Issue number	3
DOIs	https://doi.org/10.1016/0022-5096(92)80007-D
State	Published - 1992
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Online availability

10.1016/0022-5096(92)80007-D

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title = "The use of a coherent gradient sensor in dynamic mixed-mode fracture mechanics experiments",

abstract = "The use of a coherent gradient sensing (CGS) apparatus is explored in dynamic fracture mechanics investigations. The ability of the method to quantify mixed-mode crack tip deformation fields accurately is tested under dynamic loading conditions. The specimen geometry and loading follow that of Lee and Freund who gave the theoretical and numerical mixed-mode K values as a function of lime for the testing conditions. The CGS system's measurements of KI and KII are compared with the predicted results, and good agreement is found. The method is used to measure K beyond the time domain of the known solution; it is seen that a shift from primarily mode II deformation to primarily mode I deformation occurs.",

author = "Mason, {J. J.} and J. Lambros and Rosakis, {A. J.}",

note = "Funding Information: We would like to thank Prof. L. B. Freunda nd Dr Y. J. Lee for their many helpful discussions and for making their numericald ata available to us prior to publication. We would also like to thank Dr H. Tippur for his help and advice given in the early stageso f this study. Finally, the support of ONR through Contract NOOO14-90-J-134is0 g ratefully acknowledged.",

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doi = "10.1016/0022-5096(92)80007-D",

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AU - Mason, J. J.

AU - Lambros, J.

AU - Rosakis, A. J.

N1 - Funding Information: We would like to thank Prof. L. B. Freunda nd Dr Y. J. Lee for their many helpful discussions and for making their numericald ata available to us prior to publication. We would also like to thank Dr H. Tippur for his help and advice given in the early stageso f this study. Finally, the support of ONR through Contract NOOO14-90-J-134is0 g ratefully acknowledged.

PY - 1992

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N2 - The use of a coherent gradient sensing (CGS) apparatus is explored in dynamic fracture mechanics investigations. The ability of the method to quantify mixed-mode crack tip deformation fields accurately is tested under dynamic loading conditions. The specimen geometry and loading follow that of Lee and Freund who gave the theoretical and numerical mixed-mode K values as a function of lime for the testing conditions. The CGS system's measurements of KI and KII are compared with the predicted results, and good agreement is found. The method is used to measure K beyond the time domain of the known solution; it is seen that a shift from primarily mode II deformation to primarily mode I deformation occurs.

AB - The use of a coherent gradient sensing (CGS) apparatus is explored in dynamic fracture mechanics investigations. The ability of the method to quantify mixed-mode crack tip deformation fields accurately is tested under dynamic loading conditions. The specimen geometry and loading follow that of Lee and Freund who gave the theoretical and numerical mixed-mode K values as a function of lime for the testing conditions. The CGS system's measurements of KI and KII are compared with the predicted results, and good agreement is found. The method is used to measure K beyond the time domain of the known solution; it is seen that a shift from primarily mode II deformation to primarily mode I deformation occurs.

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The use of a coherent gradient sensor in dynamic mixed-mode fracture mechanics experiments

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