COMPARISON OF QUALIMETRIC INDEXES OF WINDING AND LAYING-UP AT PROFILED COMPOSITE PARTS MANUFACTURING

Abstract

An analysis of the qualimetric indicators of the winding and laying processes used for the manufacture of profiled long parts of aircraft from composites was carried out. A single curvature panel was selected as a typical part that can be manufactured using manual laying or automated winding processes.

The assessment of the duration of typical technological processes for the manufacture of a representative part includes considering both the main and auxiliary technological processes of preparation and direct production. A profiled long part of a square cross-section was selected to include the pultrusion process in the comparison. Using the analysis of modern literary sources, the influence of such a characteristic of technological processes as the complexity of a part on the characteristics of its quality was separately investigated. A method for numerically evaluating the quality indicators of technological processes for the production of composite profiles was proposed. Also, the material utilization factor is used when comparing manufacturing processes. This method involves the use of the method of expert assessments that use the weighting factors of the influence of each technological process.

The goal of research is to develop an engineering methodology for comparing complex quality indicators of technological processes with the subsequent selection of the most effective process with the development of relevant recommendations.

The subject of research is the quality indicators of the technological processes of automated winding, manual laying and pultrusion.

Methods used in the research. The study used the method of qualimetric analysis of the indicators of the technological processes of manufacturing panels of single curvature and profiled products from composites.

Recommendations have been developed for taking into account such most significant properties of production processes and parts that are manufactured as the complexity and strength of the product, the cost of production equipment, process productivity and qualification of workers, which should be taken into account when analyzing quality indicators.