BS ISO 27727:2008 - Rubber, vulcanized. Measurement of fatigue crack growth rate – BSI British Standards
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BS ISO 27727:2008

Rubber, vulcanized. Measurement of fatigue crack growth rate

Status : Current, Under review   Published : April 2010



BS ISO 27727:2008 Rubber, vulcanized. Measurement of fatigue crack growth rate

BS ISO 27727 specifies a method for the determination of the fatigue crack growth rate of vulcanized rubber under repeated loading over an extended period of time. The crack starts from the tip of a cut made in the test piece before the test, and grows progressively until it finally becomes large enough for complete fracture to occur.

Using a pure-shear test piece, measurements are made to monitor the crack growth under the cyclic loading in order to obtain the crack growth rate, i.e. the increase in crack length per cycle. Tests are carried out at various tearing energies by varying the strain energy density in the test piece.

This is done by changing the strain amplitude.

Contents of BS ISO 27727:

1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
5.1 Fatigue crack growth rate test machine
5.2 Image-processing device
5.3 Temperature-controlled chamber
5.4 Thickness- and width-measurement instruments
6 Test pieces
6.1 Dimensions
6.2 Number of test pieces
6.3 Time interval between moulding and testing
6.4 Conditioning
6.5 Preparation of test pieces for testing
7 Test conditions
7.1 Temperature
7.2 Cycle frequency
7.3 Strain amplitude
7.4 Testing under non-relaxed conditions
8 Procedure
8.1 Determination of strain energy density
8.2 Determination of tearing energy
8.3 Measurement of crack growth
9 Expression of results
10 Precision
11 Test report


Standard NumberBS ISO 27727:2008
TitleRubber, vulcanized. Measurement of fatigue crack growth rate
StatusCurrent, Under review
Publication Date30 April 2010
Confirm Date24 June 2016
Normative References(Required to achieve compliance to this standard)ISO 23529
Informative References(Provided for Information)No other standards are informatively referenced
International RelationshipsISO 27727:2008
Draft Superseded By07/30161584 DC
DescriptorsTest specimens, Tensile splitting tests, Splitting tests, Fatigue testing, Test equipment, Mechanical testing, Vulcanized rubber, Rubber, Cracking, Loading
Title in FrenchCaoutchouc vulcanisé. Mesurage du taux de croissance des craquelures de fatigue
ISBN978 0 580 58324 7
File Size382 KB

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