Achieving Optimum
Achieving Optimum Scientific Standards for
Producing Fabrics Suitable for Car Safety Seat Belts”
ABSTACT
This research is an attempt to produce fabrics suitable for being used as car safety seat belts .All samples in this research were produced with textured polyester filament yarns using three woven structures ,three warp sets were also used , with three weft sets using two different yarns counts. Most samples have achieved the expected results .
safety seat belts , safety seat belt is an energy absorbing device is designed to keep the load imposed on a victim's body during a crash down to survivable limits . Seat belts are an easy to use ,effective and inexpensive means of protection in an accident .There are various types of seat belts depending on the vehicle. In passenger cars ,the seat belt fits across the lap and diagonally across the chest which is the most widely used type in the world .In passenger airplanes , the simple lap strap is used that does not restrain the upper part of the body .Racing drivers wear a full harness which consists of a strap over each shoulder and a lap belt .
Seat belts are woven narrow fabrics in twill or satin construction .Nylon was used in some early seat belts . but because of its superb mechanical performance ,polyester is now exclusively used worldwide. Polyester also provides high dimensional stability ,good abrasion resistance ,excellent resistance to photo-oxidative degradation ,and high light fastness, which are considered the major requirements in a good seat belt .
The experimental Work
This research concerns with producing fabrics suitable for Car safety seat belts. All samples in the research were produced with textured polyester yarns using three woven structures (regular hopsack 2/2 ,twill 2/2 and satin 4) .Three warp sets were also used (90,110 and 130 end /cm) .
Results and Discussion
Tensile strength
It is clear from the diagrams and tables that regular hopsack2/2 has scored the highest rates of tensile strength , whereas satin 4 has scored the lowest rates.
Elongation
It is obvious from the diagrams that satin has recorded the highest rates of elongation , whereas regular hopsack 2/2 has recorded the lowest rates .
abrasion resistance
It is obvious from the results that regular hopsack 2/2 has recorded the highest rates of abrasion resistance (lost weight and thickness ratio), followed by twill 2/2 whereas satin 4 has recorded the lowest rates, but the differences were insignificant.
Thickness
It is clear from the diagrams, that regular hopsack 2/2 has recorded the highest rates of thickness, followed by twill 2/2 and then satin 4 , which achieved the lowest rates , and it was found that the difference between both of them was insignificant.
Weight
It is clear from the diagrams that, the used structures did not give a significant effect on fabric weight as the differences between them were insignificant.
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