Study on fatigue and energy-dissipation properties of nanolayered Cu/Nb thin films

Y. C. Wang, T. Hoechbauer, J. G. Swadener, T. Darling, A. Misra, R. Hoagland, M. Nastasi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Energy dissipation and fatigue properties of nano-layered thin films are less well studied than bulk properties. Existing experimental methods for studying energy dissipation properties, typically using magnetic interaction as a driving force at different frequencies and a laser-based deformation measurement system, are difficult to apply to two-dimensional materials. We propose a novel experimental method to perform dynamic testing on thin-film materials by driving a cantilever specimen at its fixed end with a bimorph piezoelectric actuator and monitoring the displacements of the specimen and the actuator with a fibre-optic system. Upon vibration, the specimen is greatly affected by its inertia, and behaves as a cantilever beam under base excitation in translation. At resonance, this method resembles the vibrating reed method conventionally used in the viscoelasticity community. The loss tangent is obtained from both the width of a resonance peak and a free-decay process. As for fatigue measurement, we implement a control algorithm into LabView to maintain maximum displacement of the specimen during the course of the experiment. The fatigue S-N curves are obtained.

Original languageEnglish
Title of host publicationHigh Performance Structures and Materials III
Pages323-330
Number of pages8
DOIs
Publication statusPublished - 2006 Dec 1
Event3rd International Conference on High Performance Structures and Materials 2006, HPSM06 - Ostend, Belgium
Duration: 2006 May 32006 May 5

Publication series

NameWIT Transactions on the Built Environment
Volume85
ISSN (Print)1743-3509

Other

Other3rd International Conference on High Performance Structures and Materials 2006, HPSM06
CountryBelgium
CityOstend
Period06-05-0306-05-05

All Science Journal Classification (ASJC) codes

  • Architecture
  • Civil and Structural Engineering
  • Building and Construction
  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Arts and Humanities (miscellaneous)
  • Transportation
  • Safety Research
  • Computer Science Applications

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  • Cite this

    Wang, Y. C., Hoechbauer, T., Swadener, J. G., Darling, T., Misra, A., Hoagland, R., & Nastasi, M. (2006). Study on fatigue and energy-dissipation properties of nanolayered Cu/Nb thin films. In High Performance Structures and Materials III (pp. 323-330). (WIT Transactions on the Built Environment; Vol. 85). https://doi.org/10.2495/HPSM06031