Analysis of variable strain amplitude response caused by impact loading of carbon nanotube reinforced magnesium alloy AZ31B

M. F. Abdullah, Shahrum Abdullah, Mohd. Zaidi Omar, Zainuddin Sajuri, M. S. Risby

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

Abstract

This paper presents the effects of carbon nanotubes (CNT) in the AZ31B magnesium alloy when loaded by impact tests associated to transient-based variable amplitude (VA) loadings. The failure behaviors of this alloy, as well as the effects of varying percentages of added carbon nanotubes (CNTs) on the absorption energy of the alloys under transient variable amplitude load impact signal were investigated thoroughly via both experiment and simulation. The CNT composition of 0.1, 0.2, and 0.5 by percentage weight of CNT in AZ31B were chosen as the specimen preparation. The Charpy testing was then used to record the impact behavior of the specimens. In addition, a strain gauges was attached on each specimen during the test in order to record the affected variable amplitude strain signals for both specimen and also the Charpy striker. Using the signal processing analysis for VA strain loading, the power spectrum density approach was used for determining the energy-based distribution. To obtain this type of energy, the VA strain signals were converted from the time domain to a frequency domain using the Fast Fourier Transform method. Significantly, the signal analysis showed that the AZ31B magnesium alloy with 0.2% CNT absorbed the highest amount of energy among the tested specimens. Therefore, addition of an optimal amount of CNTs improves the strength of alloys.

Original languageEnglish
Title of host publicationProcedia Engineering
PublisherElsevier Ltd
Pages10-17
Number of pages8
Volume101
EditionC
DOIs
Publication statusPublished - 2015
EventInternational Conference on Material and Component Performance under Variable Amplitude Loading, VAL 2015 - Prague 4, Czech Republic
Duration: 23 Mar 201526 Mar 2015

Other

OtherInternational Conference on Material and Component Performance under Variable Amplitude Loading, VAL 2015
CountryCzech Republic
CityPrague 4
Period23/3/1526/3/15

Fingerprint

Magnesium alloys
Carbon nanotubes
Specimen preparation
Signal analysis
Strain gages
Power spectrum
Fast Fourier transforms
Signal processing
Testing
Chemical analysis
Experiments

Keywords

  • Carbon nanotube
  • Impact
  • Magnesium alloy
  • Power spectrum density
  • Transient load

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Analysis of variable strain amplitude response caused by impact loading of carbon nanotube reinforced magnesium alloy AZ31B. / Abdullah, M. F.; Abdullah, Shahrum; Omar, Mohd. Zaidi; Sajuri, Zainuddin; Risby, M. S.

Procedia Engineering. Vol. 101 C. ed. Elsevier Ltd, 2015. p. 10-17.

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

Abdullah, MF, Abdullah, S, Omar, MZ, Sajuri, Z & Risby, MS 2015, Analysis of variable strain amplitude response caused by impact loading of carbon nanotube reinforced magnesium alloy AZ31B. in Procedia Engineering. C edn, vol. 101, Elsevier Ltd, pp. 10-17, International Conference on Material and Component Performance under Variable Amplitude Loading, VAL 2015, Prague 4, Czech Republic, 23/3/15. https://doi.org/10.1016/j.proeng.2015.02.003
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AB - This paper presents the effects of carbon nanotubes (CNT) in the AZ31B magnesium alloy when loaded by impact tests associated to transient-based variable amplitude (VA) loadings. The failure behaviors of this alloy, as well as the effects of varying percentages of added carbon nanotubes (CNTs) on the absorption energy of the alloys under transient variable amplitude load impact signal were investigated thoroughly via both experiment and simulation. The CNT composition of 0.1, 0.2, and 0.5 by percentage weight of CNT in AZ31B were chosen as the specimen preparation. The Charpy testing was then used to record the impact behavior of the specimens. In addition, a strain gauges was attached on each specimen during the test in order to record the affected variable amplitude strain signals for both specimen and also the Charpy striker. Using the signal processing analysis for VA strain loading, the power spectrum density approach was used for determining the energy-based distribution. To obtain this type of energy, the VA strain signals were converted from the time domain to a frequency domain using the Fast Fourier Transform method. Significantly, the signal analysis showed that the AZ31B magnesium alloy with 0.2% CNT absorbed the highest amount of energy among the tested specimens. Therefore, addition of an optimal amount of CNTs improves the strength of alloys.

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