Abstract
The development of modern shipbuilding requires using new structural materials, superior to traditional ones. Polymeric composite materials are among the most promising. The article studies the mechanical properties of multilayer polymer composite materials made of glass fabrics under tension and the effect of the number of layers of glass mat on the tensile strength of the material. The technology of manufacturing samples from polymer composites reinforced with fiberglass plastic is being considered. The size and shape of the samples, the technological parameters of the manufacturing process, which depend on standard requirements, and the technological features of the testing machine are substantiated. It has been stated that fiberglass is the cheapest and most common type of composite materials, which does not require special maintenance, the cost of maintenance of fiberglass structures being significantly lower than that of steel structures. The method of testing the tensile strength of the samples has been studied. For conducting experiments, samples of glass mat brand EMC-600-1250-E were used. According to the study results, the mathematical dependence of tensile strength on the number of layers was established, and the most important stages of statistical processing of test results were laid out using the Minitab 18.1 software package. A graph of the relationship between the number of layers and tensile strength is presented. For all the examined samples the ultimate strength will depend on the number of layers. The results of mechanical properties can be used in solving problems associated with the application of polymer composite materials in shipbuilding, for example, in manufacturing superstructures of dry cargo vessels.
Highlights
A graph of the relationship between the number of layers and tensile strength is presented
The technology of manufacturing samples from polymer composites reinforced with fiberglass plastic is being considered
It has been stated that fiberglass is the cheapest and most common type of composite materials, which does not require special maintenance, the cost of maintenance of fiberglass structures being significantly lower than that of steel structures
Summary
Астраханский государственный технический университет, Астрахань, Российская Федерация. Представлены исследования механических свойств многослойных полимерных композиционных материалов, изготовленных на основе стеклянных тканей, при растяжении, а также влияние количества слоёв стекломата на предел прочности изучаемого материала при растяжении. Рассматривается технология изготовления образцов из полимерных композиционных материалов, армированных стекломатом со стеклянными волокнами (стеклопластик). Что стеклопластик является наиболее дешёвым и распространённым типом композиционных материалов, который не требует специального обслуживания при применении, стоимость технического обслуживания конструкций из стеклопластика существенно ниже обслуживания конструкций из стали. Исследована методика проведения испытания образцов на прочность при растяжении. На основании результатов исследования установлена математическая зависимость предела прочности при растяжении от количества слоёв. Для всех исследованных образцов предел прочности будет пропорционально зависеть от количества слоёв. В мировом судостроении развивается интенсивный процесс разработки отдельных конструкций из полимерных композиционных материалов (ПКМ) для использования на судах. Целью исследования настоящей работы является изучение влияния количества слоёв ткани на предел прочности при растяжении ПКМ на основании проведённых экспериментов
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