ISO 20344 Test Fixture

Description

ISO 20344 Personal Protective Equipment — Test Methods for Footwear

 

ISO 20344 specifies methods for testing footwear designed as personal protective equipment

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Apparatus

Tensile machine, with a means of continuously recording load, with a jaw separation rate of (100 ± 20) mm/min and a force range of 0 N to 600 N.

The machine shall be fitted with either pincers or flat jaws (depending on the construction of the test sample), (27,5 ± 2,5) mm wide, capable of firmly

gripping the test pieces.

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Measurement of Bond Strength

Before carrying out the test, measure the width of the test piece to the nearest mm at several points using a calibrated steel rule and calculate the average value

to the nearest mm.

Then measure the bond strength on a minimum length of 30 mm in one of the following ways.

— For sole/upper bond strength (construction type a): Clamp the test piece into the jaws of the tensile machine, using a pincer jaw to grip the short edge of the sole,

and record the load/deformation graph at a jaw separation speed of (100 ± 20) mm/min.

— For sole/upper bond strength (construction types b, c, d and e) and sole interlayer bond strength (construction types f and g): Clamp the separated ends of the

test piece in the flat jaws and record the load/deformation graph at a jaw separation speed of (100 ± 20) mm/min.

*** Before conducting ISO 20344 , it is important to read the entire specification. Standards can be obtained from appropriate standard authorities.

 

***PARSROS  offers several types of grips and fixtures which will enable you to perform a variety of tests

  that are accurate and repeatable.