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 International Standard specifies a method for determining the tensile strength, elongation at a specified load and elongation at break. It is applicable to all types of leather.
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.
Grips with minimum length of 45 mm in the direction of the load designed to apply a constant clamping force by mechanical of pneumatic means.
Cutting apparatus
A thickness guage
Preparation
From the sample, the cut at further six test pieces to the dimensions given in the standard with the long axis parallel to the backbone, and the six test pieces perpendicular to the backbone.
Measure the width and thickness of each test piece as instructed in the standard and calculate mean values for the width and the thickness of the sample.
The Test method
Set the jaws of the grips to 50 mm separation for standard size test pieces, or 100 mm separation for large size test pieces, and clamp the test piece by.
Record the initial grip separation, and 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
Determine the tensile length (Tn) as calculated from:
Tn = F/w.t
The Where
F = highest force is recorded
W = mean width in mm
T = mean thickness in mm
Percentage elongation at a specified load (El)
El = (L1 - L0 / L0) x 100
The Where
L1 is the separation of the jaws at the specified load
L0 is the initial separation of the jaws
Percentage elongation at break (Eb)
El = (L2 - L0 / L0) x 100
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