Abstract Shape memory alloys (SMA in short) exhibit a series of properties which are very different compared to regular metallic materials. One their main characteristic is the ability change geometric shape when subjected an increase from low high temperature. In certain conditions, this can be reversible, such that material “memorize” two shapes: temperature (the “warm” shape) and “cold” shap...

In the present work, Na+-montmorillonite nanoclay (Na-MMT) was functionalized using 3-aminopropyltrimethoxysilane (3-APTMS) as a coupling agent. The covalent functionalization of MMT was confirmed by Fourier-transform infrared spectroscopy (FT-IR). In the specimen fabrication stage, 5 wt% of pristine MMT or silane-functionalized MMT (f-MMT) were incorporated into an epoxy system and the resulta...

In the present work, an investigation on surface topography and geometry variation of bagasse fibers was correlated with their mechanical properties via image analysis. The were tested under a universal tensile testing machine diameter calculated using images obtained in digital microscope. Furthermore, characterization quantification also performed SEM. results showed that roughness alkali-tre...

in this research the effect of randomly reinforced soil and soil cement with different percent of cement and fiber and different length of fiber was investigated. samples were prepared according to the maximum dry unit weight and optimum water content due to the corresponding compaction curves. compressive and tensile strength were conducted on samples for different curing times. regression equ...

a parametrik investigation was conducted to study the non-linear behavior of precast and cast-in-place reinforced concrete beam-column connections subjected to tabas seismic forces (1979). the behavior of these types of connections in a four stories structure with respect to strength, ductility , stiffness, and bond deterioration at the joint core are presented and discussed. calculation result...