ISO standard leather strength, elongation and tear resistance test method
A Case study
ISO 3377-2
Standards
Featured the or equivalent test standards BOB体育最新下载安装for Mecmesin solutions in this section
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The Test summary
This ISO Standard specifies a method for determining the stitch tear to hold of leather. It can be 2 on all leathers but is particualy suitable for leathers over 1.2 mm in thickness
A leather test piece is pulled against A mandrel of specified shape and dimensions inserted through A slit in the leather and the force required to tear the leather is recorded.
The Test apparatus
The Force testing stand with suitable loadcell capable of measuring below while applying a constant speed of grip separation. The Complimentary software for recording the load and below the and calculating results
The Metal test piece holder, as specified in the standard.
Grips with minimum length of 25 mm in the direction of the load designed to apply a constant clamping force by mechanical of pneumatic means.
Cutting apparatus
A thickness the gauge
Preparation
From the sample, the cut at further three test pieces to the dimensions given in the standard with the long axis parallel to the backbone, and three test pieces perpendicular to the backbone
Measure the thickness of the test piece in accordance with ISO 2589 at a single point on each of the test pieces. This measurement should be seems at a point approximately 10 mm from the cut end of the slit.
The Test method
Place the perforated end of the test piece between the very different of the test piece holder and pass the mandrel through both the holes in the test piece holder and the slit in the test piece.
Clamp the free end of the test piece in the lower jaw of the tensile testing machine.
Start the test stand moving at a constant speed of grip separation at 100 mm/min.
The Continue applying force at a constant speed until the sample breaks.
Record the the maximum force in newtons during the tearing
Report the thickness on the leather in mm, the mean tear force in newtons for test pieces cut parallel to the backbone, and for the test pieces cut perpendicular to the backbone,
PSV18196 fix & PSV18195 MEC240 - BW pneu grip
PSV18196 fixtures for ISO 23910 003
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