Fabric Testing ISO 13938.2

Core Test Methodology

1. Principle

2. Sample Preparation

• Specimen size: A circular or rectangular sample with a minimum test area of 50 cm² (diameter: ~79.8 mm). Smaller areas (e.g., 10 cm²) may be used if the full size is impractical 26.

• Orientation: Test specimens are typically taken from both the warp (lengthwise) and weft (crosswise) directions of the fabric.

• Preconditioning: Samples must be conditioned in standard atmospheric conditions (20±2°C, 65±4% RH) for at least 24 hours 6.

3. Test Setup

• Apparatus: A pneumatic burst tester with a clamping ring to secure the specimen and a flexible membrane beneath it.

• Pressure application: Compressed air is gradually introduced beneath the membrane, deforming both the membrane and the fabric until rupture occurs. The pressure and deformation data are recorded in real-time 210.

4. Key Parameters

• Bursting strength: The maximum pressure (in kPa) sustained by the fabric before rupture.

• Bursting distension: The maximum vertical deformation (in mm) of the fabric at rupture.

• Energy absorption: Calculated from the force-displacement curve, reflecting the fabric’s toughness under dynamic loading 68.

Technical Requirements

• Test precision: The apparatus must have an accuracy of ±1% for pressure measurements and ±0.1 mm for deformation measurements.

• Pressure range: Most fabrics are tested up to 800 kPa, but higher pressures may be used for specialized textiles (e.g., industrial fabrics) 610.

• Environmental control: Testing should be conducted in standard atmospheric conditions to ensure reproducibilit

  
  
  

Applications

1. Product Development:

• Optimizing fabric structures (e.g., increasing yarn density) to enhance resistance to bursting forces.

• Evaluating the impact of coatings or laminations on fabric integrity.

2. Quality Assurance:

• Ensuring compliance with industry standards (e.g., EN 13534 for protective clothing) and customer specifications.

• Detecting manufacturing defects (e.g., weak spots) in mass-produced textiles.

3. Regulatory Compliance:

• Meeting REACH requirements for durable textile products sold in the EU.

• Certifying fabrics for use in medical devices or aerospace applications