Norm

ASTM D2970/D2970M-04(2014)

Standard Test Methods for Testing Tire Cords, Tire Cord Fabrics, and Industrial Yarns Made From Glass Filaments

54,27

Over deze norm

Status Definitief
Aantal pagina's 10
Commissie D13.19
Gepubliceerd op 15-05-2014
Taal Engels

1.1 These test methods cover the testing of industrial yarns made of glass filaments, cords twisted from such yarns, and fabric woven from such cords—products that are made specifically for use in the manufacture of pneumatic tires. By agreement, these test methods may be applied to similar glass yarns and cords used for reinforcing other rubber goods and for other industrial applications. The yarn or cord may be wound on cones, tubes, bobbins, spools, or beams, woven into fabric, or in other forms. These test methods include testing procedures only. These test methods do not include specifications or tolerances.

1.2 No procedure is included for the determination of fatigue resistance of cords, but several articles relating to the measurement of fatigue resistance of cords made from man-made filaments and cured in rubber were published in the bibliography of Test Methods D885.

1.3 The following sections are included:

 

Section

Adhesion of Cords to Elastomers

24

Breaking Strength (Force) of Conditioned Yarns and Cords

13

Breaking Tenacity of Conditioned Yarns and Cords

14

Catenary Length of Cords

Appendix X1

Conditioning

8

Construction of Yarns and Cords

18

Count of Tire Cord Fabric

22

Dip Pick-Up (DPU) on Yarns and Cords

23

Elongation at Break of Conditioned Yarns and Cords

15

Initial Modulus of Conditioned Yarns and Cords

16

Keywords

28

Mass of Tire Cord Fabric

22

Precision and Bias

25 – 27

Sampling of Yarn and Cord

6

Sampling of Tire Cord Fabric

7

Tensile Properties of Yarns and Cords

9 – 17

Terminology

3

Thickness of Cords

21

Twist in Yarns and Cords

20

Width of Tire Cord Fabric

22

Yarn Number of Dipped Yarns and Cords

19


1.4 These test methods show the values in both SI units and in inch-pound units. “SI units” is the technically correct name for the system of metric units known as the International System of Units. “Inch-pound units” is the technically correct name for the customary units used in the United States. The values stated in either acceptable metric units or other units shall be regarded separately as standard. The values expressed in each system may not be exact equivalents; therefore, each system must be used independently of each other without combining values in any way.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Details

ICS-code 83.160.01
Nederlandse titel Standard Test Methods for Testing Tire Cords, Tire Cord Fabrics, and Industrial Yarns Made From Glass Filaments
Engelse titel Standard Test Methods for Testing Tire Cords, Tire Cord Fabrics, and Industrial Yarns Made From Glass Filaments

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