Notching sensitivity of flexible warp knitting metal mesh

In order to research notch sensitivity of flexible warp knitting metal mesh,its unilateral and bilateral notch are preset,and then,the warp direction tensile is tested at a speed of 20 mm / min. The destruction process and tensile load-elongation curve of notched samples are analyzed. The notch tensile force( Fnotch),the threshold force( Fthreshold) and the notch strength ratio( RNS) under the notch size ratio( a / W) are compared. Experimental results show that the introduction of preset notch significantly degrade the tensile and mechanical properties of the metal mesh material. Fnotchand Fthresholdare both greater in bilateral notched specimens than in single-sided ones in the case of the same notch length. Relative to bilateral notch,flexible warp knitting metal mesh is more sensitive to unilateral notch.