Standards

Featured or equivalent test standards for Mecmesin solutions in this section

Term Video

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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.



Test apparatus


Force testing stand with suitable loadcell capable of measuring displacement while applying a constant speed of grip separation.  Complimentary software for recording load and displacement 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, cut at least six test pieces to the dimensions given in the standard with the long axis parallel to the backbone, and 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.


 



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 securely.


Record the initial grip separation, and start the test stand moving at a constant speed of grip separation at 100 mm/min.


Continue applying force at a constant speed until the sample breaks


Determine the tensile length (Tn) as calculated from:


Tn = F/w.t


  Where


    F = highest force recorded


    w = mean width in mm


    t = mean thickness in mm


Percentage elongation at a specified load (El)


El = (L1-L0/L0) x 100


  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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