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Friday, August 7, 2020 | History

3 edition of Detection of non-symmetrical damage in smart plate-like structures found in the catalog.

Detection of non-symmetrical damage in smart plate-like structures

H. T. Banks

Detection of non-symmetrical damage in smart plate-like structures

by H. T. Banks

  • 244 Want to read
  • 2 Currently reading

Published by Institute for Computer Applications in Science and Engineering, NASA Langley Research Center, National Technical Information Service, distributor in Hampton, VA, Springfield, VA .
Written in English

    Subjects:
  • Two dimensional models.,
  • Smart materials.,
  • Damage.,
  • Dynamic response.,
  • Resonant frequencies.,
  • Vibration.,
  • Defects.,
  • Actuators.,
  • Algorithms.

  • Edition Notes

    StatementH.T. Blanks and P.R. Emeric.
    SeriesICASE report -- no. 98-15, [NASA contractor report] -- NASA/CR-1998-206931, NASA contractor report -- NASA CR-206931.
    ContributionsEmeric, P. R., Institute for Computer Applications in Science and Engineering.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL17129891M

    Mode shape curvature-based method was originally developed to identify the damage in one-dimensional beam structures. In this paper, the method is generalized to fit for identification of damages in plate structures, using two-dimensional mode shape curvatures. Damage indication in smart structures using modal effective electromechanical coupling coefficients Banks H T and Emerec P R Detection of non-symmetrical damage in smart plate-like structures J. Intell. Mater. Benjeddou A First use of the shear piezoceramics and effective electromechanical coupling coefficient for damage.

    You can write a book review and share your experiences. Other readers will always be interested in your opinion of the books you've read. Whether you've loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them.,,,, Free ebooks since For impedance-based damage detection practices, the sensing range of piezoelectric devices is an important parameter that should be determined before real implementations. This study presents numerical and experimental analyses for characterizing the sensing region of a smart PZT (lead–zirconate–titanate) interface for damage monitoring in plate-like by: 7.

      AbstractAn algorithm to detect damage size and shape using a lead zirconate titanate (PZT) transducer array for a plate structure is developed in this paper. During the process of detection, the pr. Guided wave-based structural health monitoring (SHM) has been well studied in plate-like structures due to the ability of guided waves to propagate long distances with less energy loss and sensitivity to small defects in the structure.


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Detection of non-symmetrical damage in smart plate-like structures by H. T. Banks Download PDF EPUB FB2

An unperturbed middle surface as the reference surface. The presence of non-symmetrical damage introduces a coupling of the motions in the (x, y) plane which is not taken into account by these models.

We model this coupled motion assuming a state of plane strain in the structure; that is, away from the edges, no. CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): A two-dimensional model for in-plane vibrations of a cantilever plate with a non-symmetrical damage is used in the context of defect identification in materials with piezoelectric ceramic patches bonded to their surface.

the host structure with smart material capabilities. The premise of the detection method is that damage to a structure will induce changes in the natural frequencies which can be obtained by measurement of the vibration response.

A damage corresponds to a local loss of sti ness, which lowers the natural frequencies of the structure. Modal methods are typically. The fo cus of this rep ort is the detection and c haracterization of non-symmetrical damage in smart cantilev er plate-lik e structures.

Smart materials are used in a. Title: Detection on non-symmetrical damage in smart plate-like structures: Author: Banks, Harvey Thomas; Emeric, Pierre R.: Publisher: North Carolina State by: CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): A two-dimensional model for in-plane vibrations of a cantilever plate with a non-symmetrical damage is used in the context of defect identification in materials with piezoelectric ceramic patches bonded to their surface.

These patches can act both as actuators and sensors in a self-analyzing. A two-dimensional model for in-plane vibrations of a cantilever plate with a non-symmetrical damage is used in the context of defect identification in materials with piezoelectric ceramic patches bonded to their surface.

These patches can act both as actuators and sensors in a self-analyzing fashion, which is a characteristic of smart materials. When an electric field is applied, piezoceramic patches induce strains in the material to which they are bonded and, conversely, they produce a voltage when a deformation occurs in the material [7, 8].

As a consequence, these patches can act both as actuators and sensors, providing the host structure with smart material : H. Banks, P. Emeric. Characterization of Non-Symmetrical Damage in Smart Plate-Like Structures. La Jolla, CA. Smart material technology is an active area of research, with promising applications that include, for instance, control systems [2, 8] and nondestructive evaluation [3, 8].

Among the different types of smart material structures currently studied Author: H. Banks, P. Emeric. A two-dimensional model for in-plane vibrations of a cantilever plate with a non-symmetrical damage is used in the context of defect identification in materials with piezoelectric ceramic patches bonded to their surface.

These patches can act both as actuators and sensors in a self-analyzing fashion, which is a characteristic of smart : P. Emeric and H. Blanks. To validate the proposed compensation method and discover the relative applications in damage detection in plate-like structures, a series of simulations and experiments have been conducted.

Firstly, a finite element model of × × 3 mm (length × width × thickness) aluminum plate is generated in Abaqus/ by: 3. A two-dimensional model for in-plane vibrations of a damped linear elastic Hookean partially clamped plate-like structure with a nonsymmetrical damage is proposed.

The model includes both active and passive contributions of piezoelectric ceramic patches bonded to the surface of the by: 4. Detection of Non-Symmetrical Damage in Smart Plate-Like Structures A Galerkin method is used to approximate the dynamic response of these structures.

The natural frequency shifts due to the damage are estimated numerically and compared to experimental data obtained from tests on cantilever aluminum plate-like structures damaged at di#erent.

Results show that the presence and location of the damage can be effectively identified even with noisy features and missing data. The performance and applicability of the proposed localized damage detection strategy for plate-like structures using discrete time-delayed binary data from a novel wireless sensor network is thus : Hadi Salehi, Rigoberto Burgueño, Saptarshi Das, Subir Biswas, Shantanu Chakrabartty.

Banks, H.T. and Emeric, P.R. () Detection of non‐symmetrical damage in smart plate‐like structures, J Intell Mater Syst Struct 9, – Google Scholar Banks‐Sills, L., Motola, Y., and Shemesh, L.

() The M ‐integral for calculating intensity factors of an impermeable crack in a piezoelectric material, Eng Fracture. Get this from a library. Detection of non-symmetrical damage in smart plate-like structures.

[H T Banks; P R Emeric; Institute for Computer Applications in Science and Engineering.]. Create a new account. Are you an ASCE Member. We recommend that you register using the same email address you use to maintain your ASCE Member account. Detection of non-symmetrical damage in smart plate-like structures NASA Langley Research Center, Hampton Virginia.

NASA/C– and ICASE Report No. 98– NASA/C– and ICASE Report No. 98–Author: Georgios E. Stavroulakis. The main purpose of the current research is to pilot study the impact damage detection in a beam structure using infrared thermography.

In this study, a beam structure, made of polyvinyl alcohol fiber reinforced engineering cementitious composite (PVA-ECC) was subjected to multiple low-velocity impacts at a constant energy level.

In this paper, a mode shape curvature-based method for detection and localization of damage in plate-like struc-tures is described.

The proposed algorithm requires only the mode shape curvature data of the damaged structure. The damage index is defined as the absolute difference between the measured curvature of the damaged structure.

Damage localization in plate-like structure using built-in PZT sensor network Xinglong Liu, Chengxu Zhou and Zhongwei Jiang Abstract; Full Text (K) Abstract In this study, a Lamb-wave based damage detection approach is proposed for damage localization in plate.H.T.

Banks, P.R. EmericDetection of non-symmetrical damage in smart plate-like structures Journal of Intelligent Material Systems and Structures, 9 (), pp. Google Scholar.Towards better research on better regulation.

Detection of Non-Symmetrical Damage in Smart Plate-Like Structures obtained from tests on cantilever aluminum plate-like structures .