Punch testing Machine For Double Twisted Hexagonal Mesh Gabions. IS 16014
Punch testing Machine For Double Twisted Hexagonal Mesh Gabions, Standard Specification ASTM A975.
IS 16014: Mechanically woven, double -twisted, hexagonal Wire Mesh Gabions .
Deformability to the concentrated load (PUNCHING TEST) by Precision Robotics & Automation (Gwalior)
ASTM A975 Standard Specification for Double–Twisted Hexagonal Mesh Gabions and Revet Mattresses (Metallic-Coated Steel Wire or Metallic-Coated Steel Wire With Pol (Vinyl Chloride) (PVC) Coating)
Pre-Tensioned Punch Test
• An uncut section of1.82 m (6 ft) in length) and not less than 0.91 m(3 ft)
• clamps shall be centered along the width and the excess width will be allowed to fall free on each side of the clamped section.
• tension sufficient to cause 10 % elongation of the sample section between the clamps.
• Punch device 960 cm2(1 ft2) applied to the approximate center of the sample.
Secured Punch Test—
• An uncut section of 1.24 m(4.1 ft) in length and not less than 0.9 m (3 ft) in width including all selvedge
• sides and the ends securely clamped at every mesh opening to a rigid frame
• load of 960 cm2(1 ft2) applied to the approximate center of the sample section between the clamps and in a direction perpendicular to the direction of the tension force.
• The sample shall withstand, without rupture of any strand or opening of any mesh fastening, an actual load applied by means of a circular ram at a rate as indicated in equaling or exceeding the values.
• The ram head used in the test shall be circular with a 350- mm (13.8-in.) diameter and have its edges beveled or rounded to prevent cutting of the wire strands.
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