Originally Posted by sganesh

Dear Experts ,

Is there any relation between warp and weft tensile strengths?

Warp tensile strength test is must to confirm the belt rating.

Are you getting the weft tensile strength in your belt test certificate?

Request to reply for both fabric and steel cord belts.

Thanks & regards,

Sir -

None really. Warp is the tensile member where Weft is a means to provide transverse support, resistance to impingment damage, rip /tear resistance & impact resistance. There is not "real" relationship between warp & weft in regard to tension.

Further, steel cord belting does not have a "weft" component as it is only a series of horizontally laid cords to provide high strength & low stretch. Only if the steel cord belt has a breaker or rip-stop is there any sort of weft/or transverse support.

Buddy Wilson

Fenner Dunlop Americas

Applications Engineer / TSM- Southeast ■

While the warp tensile member soley contributes to the belt nominated strength rating, the weft can enhance the splice dynamic fatigue strength by 5-10% depending on the details.

Fabric belt warp and weft interlocking obviously contributes to the overall strength as well as impact energy dissipation and rip rejection.

In steel cord belts, the weft reinforcement aids in impact, rip and also dynamic strength (fatigue) splice improvements by laboratory testing, as measured by fatigue cycles to failure. The splice strength can be enhances by 6% or more. The fabric aids in transfering or balancing tensile load between cords, while reducing maximum shear stress/strain between opposing cords in high shear. ■