Abstract
Properties of woven fabrics used to make airbag cushions are influenced by a lot of factors: the nature of raw materials, woven fabric geometry and density, technological parameters of the weaving operation and finishing. The main purpose of this research paper is to find the values of three mechanical parameters – tensile strain, tensile stress and specific modulus – according to the type of samples and test direction on the testing stand. To obtain woven fabric samples were used polyamide 6-6 polyfilament yarns (nylon), silicone coated and uncoated fabric. Testing procedure and samples preparation were done following the standard EN ISO 13934-1:1999. Test results and graphs show that, we have a good uniformity of the geometry for the analyzed fabrics.
Highlights
Every time a new product is being designed, specialists are interested in producing components with appropriate shapes and properties to leverage the functional role throughout the planned lifetime at a convenient price
We show the results of specific modulus for uncoated and coated samples
Five specimens for each type of woven fabric were tested, the average calculation related to the four parameters: E-Modulus, Tensile strain, Tensile stress, Specific Modulus
Summary
Every time a new product is being designed, specialists are interested in producing components with appropriate shapes and properties to leverage the functional role throughout the planned lifetime at a convenient price. The general term „properties” has a different meaning for each engineer or specialist working with engineering materials. Mechanical properties illustrate how the material responds to applied mechanical stresses. In specific cases, impact resistance, fatigue strength by long-term alternating stress and wear resistance are determined. Determining the mechanical characteristics allows estimating the in-service behavior of the products by quantifying the opposite resistance to their testing and processing [4,5, 29-30]. To determine the behavior of composite materials based on macroscopic fabrics (given the need to input material data into numerical simulation programs), there are several types of mechanical tests such as the uniaxial stretch test, the equiaxial stretch test, Bias test and shear test [2, 8,9, 31-32]. The applied force is measured with a force cap and the deformation by an extensometer
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