1 Scope
This part of GB/T 7742 describes the pneumatic method for the determination of bursting strength and bursting distension of textile fabrics, including the procedures for determining the bursting properties of test specimens in conditioned and wet state.
Note: the Part 1 of GB/T 7742 describes a method using hydraulic pressure.
This part is applicable to knitted, woven, nonwoven and laminated fabrics. It may be suitable for fabrics produced by other techniques.
From the available data, there appears to be no significant difference in the bursting strength results achieved using hydraulic or pneumatic burst testers, for pressures up to 800kPa. This pressure range covers the majority of performance levels expected of general apparel. For special textiles requiring high bursting pressures, the hydraulic method is more suitable.
2 Normative references
The following referenced documents are indispensable for the application of this part. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 6529 Textiles - Standard atmospheres for conditioning and testing
GB/T 6682 Water for analytical laboratory use - Specification and test methods
GB/T 19022 Measurement management systems - Requirements for measurement processes and measuring equipment
Foreword I
1 Scope
2 Normative references
3 Definitions
4 Principle
5 Sampling
6 Apparatus
7 Atmospheres for conditioning and testing
8 Test procedure
9 Calculation and expression of results
10 Test report
Annex A (Informative) Selection of position of test specimens
