Progressive damage and failure strength of notched woven fabric composites under axial loading with varying strain rates
MetadataShow full item record
This study investigated the failure of notched and un-notched plain weave composite specimens subjected to varying strain rate loading. Different strain rate axial loads were applied to observe the rate effect on the failure. Both uniform and non-uniform strain rate loads were applied to the notched and un-notched composite specimens, respectively. Notched specimens showed initial cracks at the edge of the hole before final fracture. The initial crack under tensile loading became smaller as the strain rate increased. The initial crack length was predicted using the finite element analysis of the non-homogeneous, micromechanicsbased model. The predicted length agreed well with the experimental measurement. Application of the initial crack size for the characteristic distance of the Average Stress failure criterion yielded acceptable tensile notch strengths. The compressive notch strength was less sensitive to the tensile notch strength. The non-constant, varying strain rate loading showed that the failure strength and stiffness depend on the history of the applied loading rates. The effects of the varying strain rates on both notched and un-notched specimens were different qualitatively. However, the strength ratios of the notched to un-notched specimens under varying rates were greater than those under constant rates regardless of tensile or compressive loading.
The article of record as published may be found at http://dx.doi.org/10.1016/j.compstruct.2012.09.035
Showing items related by title, author, creator and subject.
Boey, Yew Khuan (Monterey, California. Naval Postgraduate School, 2011-12);This study investigated the progressive damage/failure of composite panels with open circular holes under progressive axial loading. A series of experiments was carried out to determine the failure in laminated specimens ...
The role of particle cracking in dilatation during tensile straining of a cast and thermomechanically processed 6061 Al - 20 volume percent Al2O3 metal matrix composite Boyle, Kevin P. (Monterey, California. Naval Postgraduate School, 1996-09);In this work, the dilatation during tensile straining of a cast and thermomechanically processed 6061 Al - Al2O3 metal matrix composite (MMC) containing 20 volume percent of Al2O3 particles was examined. Standard tensile ...
Tan, Kian Sing. (Monterey, California. Naval Postgraduate School, 2009-12);This study investigates the mechanical characteriztics of aluminum alloy AA3003-H14 when it is subjected to dynamical axial loads at low strain rates of less than 1s-1. The tensile experiments show that both the ultimate ...