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Title: Off-axis properties of cross-ply metal matrix composites at quasi-static and high strain rates
Authors: Hall, Ian W.
Taşdemirci, Alper
Kara, Ali
Keywords: Strain rate
Off-axis properties
Metal matrix composite
Publisher: Elsevier Ltd.
Source: Hall, I. W., Taşdemirci, A., and Kara, A. (2011, June 5-9). Off-axis properties of cross-ply metal matrix composites at quasi-static and high strain rates. Procedia Engineering, 10, 1532-1537. doi:10.1016/j.proeng.2011.04.256
Abstract: Cylindrical samples of a 0/90° cross-ply Nextel 610™/A1-6061 (∼55Vf%) metal matrix composite have been subjected to compression testing at quasi-static and high strain rates over a range of angles between 0° and ±45° with respect to the principal fiber directions. The results, combined with testing in the longitudinal, transverse and through thickness directions, provide a detailed description of the response of such composites over a wide range of orientations. In addition, metallographic and fractographic studies along with high-speed camera records provide detailed information about the sequence of deformation events leading to fracture. Results confirm not only the strong dependence of mechanical properties upon orientation but also the critical importance of precise fiber alignment and processing in obtaining the desired theoretical properties. A misalignment of 10° was sufficient to cause an -40% decrease in maximum stress and the properties were found to vary by >70% over the orientations investigated. The high strain rate properties were generally significantly greater than those measured quasi-statically. A numerical model based on the commercial explicit finite element code LS-DYNA was used to investigate the compressive deformation and fracture of the composite. Experimental results are compared with those of the numerical model. © 2011 Published by Elsevier Ltd.
Description: 11th International Conference on the Mechanical Behavior of Materials, ICM11; Como; Italy; 5 June 2011 through 9 June 2011
ISSN: 1877-7058
Appears in Collections:Mechanical Engineering / Makina Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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