This paper presents an experimental research program for selected strength properties of composite materials, developed in accordance with procedures defined for aircraft structural components. The concept of using ablative polymer composites for flight recorder casings is presented.Composite samples were made with a matrix based on Epidian 52 epoxy resin cured at room temperature with hardeners: polyaminoamide (PAC) or triethylenetetramine (Z-1). The ablative properties of the resin were modified with layered aluminosilicate, Bentonit Specjal Extra with a 75% content of calcium montmorillonite (MMT). The hybrid reinforcement of the composites consisted of fabrics: aramid with a basis weight of
470 g/m and glass with a basis weight of 300 g/m. The phase compositions of the samples and the number of experiments performed were determined based on the adopted experimental research plan, i.e., an orthogonal full-factorial matrix of the 1st order of type 23 with repetitions. The components of the response function were the mechanical characteristics of the composites: tensile strength, flexural strength.
THE STRENGTH PROPERTIES OF THE FDR’S WITH THE ABLATIVE POLYMER COMPOSITE’S LAYER
This chapter provides guidelines for the experimental characterization according to the aviation requirements. Ablative composite materials have been employed. Material specimens have been prepared. Hardeners: PAC and Z-1 have cured the epoxy resin
Epidian 52. Properties of composite shave been modified by layered silicates filler –
Bentonit Specjal Ekstra with 75% content of calcium montmoryllonite (MMT). Hybrid reinforcement: aramid fabric (470 g/m2) – glass fabric (300 g/m2) has been used.
Researches have been realized with the use of static methods of experimental design.
Experimental plan of 1st category of type 23. Research has been done, quantitative and qualitative influence of phase type-matter on. The properties were characterized by the static tensile test: tensile strength and flexural strength. (…)
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Source: Logistyka Magazine 6/2010