The article analyzes proprietary systems, such as Lectra systems (France), Gerber Garment Technology (USA), Investronika (Spain), Assyst GmbH (Germany), Wild Ginger Software (USA) and open PatternViewer (USA), Valentina (Ukraine) automated design systems for sewing production. An analytical review of the information for testing the open parametric system of automated projection and design «Valentina» was performed. It was determined that the theoretical foundations of automated testing of automated design systems are currently an incompletely resolved problem. The minimum list of data for qualitative testing is presented, which contains 10 items, the main of which are: listings of source texts of software products, external specification, test plan and methods, test options and obtained results. The article provides a list of Internet sources of the «Valentina» software product distribution, a list of communication methods, as well as a list of external specification items required for testing the «Valentina» software product. Various versions of the «Valentina» were considered, as well as the changes made in the test version v0.7.52 compared to the previous version v0.7.51. Various types of errors that occur during the development of new functions of software products are analyzed, including the inability to perform one of the functions; inability to complete a function; the appearance on the screen of symbols or program primitives that do not correspond to the action; involuntary closing of the program window; closing the program window without warnings about saving data; other errors. The information obtained for testing the open parametric system of automated projection «Valentina» can be used in the future for the analysis of methods of testing software products and their improvement, as well as for the development of automated tests that can be implemented in the processes of creating and operating software products.

The article considers an improved method of comprehensive assessment of the impact of washing at home on the physical and mechanical properties of textile materials intended for the manufacture of children’s casual wear. In developing the methodological basis for assessing the change in the properties of fabrics from washing, we used the results of our own observations, which allowed us to analyze the operating conditions of preschool children’s clothing, activities and characteristic movements of children on playgrounds, identify key factors of destruction of products. features, topography of wear, frequency of cleaning from dirt, method of drying, etc. Thus, it can be argued that the shrinkage of fibrous systems depends on a sufficient number of factors that can affect simultaneously and comprehensively, and therefore this process should be classified as multifactorial and difficult to study, as the evaluation method used today is insufficient informative. The maximum allowable norms of such indicators as breaking characteristics up to (-15%) have been established; air permeability coefficient up to (-15%); abrasion resistance on the plane up to (-30%); thickness up to (+20%). The recommended method has been tested experimentally. Evaluation of changes in physical and mechanical characteristics of samples from the impact of repeated processing in the washing bath of a new recipe, close to home, was performed after each wash cycle using informative indicators such as breaking force based on Po, (N) air permeability coefficients Kp (dm3/m2·s) resistance of samples to abrasion in the plane Cs (cycles) and its thickness L (mm). The obtained results show the dependence of all indicators without exception on the number of washing cycles in soap and soda solution, with such as bursting loads of samples, their resistance to abrasion on the plane and air permeability decreases, and thickness increases compared to initial characteristics. The textile material should be considered resistant to the number of washing cycles in the soap and soda solution, which led to a change in at least one of the four criteria to the specified maximum allowable values.

The article is devoted to the development of a special protective suit for amateur motorcyclists. As a result of the analysis of the operating conditions of motorcyclists’ sportswear, the most negative environmental factors affecting the driver’s body are identified – wind speeds from 0 to 60 km/h, possible precipitation in the form of rain, blunt objects in case of fall. Clothing for amateur motorcyclists should protect the body from the effects of these negative factors, ease of use, comfort at rest and during intense movements. A characteristic feature of the operating conditions of sportswear for motorcyclists is that a person is almost always in a sitting position on a motorcycle. The method of non-contact optical determination of the main poses and characteristic movements of amateur motorcyclists is used in the work. To ensure a given level of ergonomic fit of the motorcyclist’s suit, it is proposed to use the following characteristics: the range of arms of the dressed person; resistance to accuracy and speed of movements; moving areas of clothing relative to the body when moving; tensile deformation of materials in parts, lack of free folds; horizontality of the bottom of the product, the correct position of the sleeve. The “thread method” was chosen to assess the ergonomic conformity of the clothing design. Using this method allows you to measure the amount of movement of individual parts of clothing and stretch material in garments and assess the dynamic compliance of clothing. To determine the air permeability of materials, it is proposed to use the calculation method, which involves determining the coefficient of air permeability by the nature of the weave, the number of threads on the warp and weft and the raw material composition. The areas of location of windproof and shockproof pads are determined. By setting the frequency of occurrence of structural elements and articulations of costumes of professional motorcyclists, the suit model is finally determined: jacket with a stand-up collar, a central zipper and a sewn-on strap, with reliefs; pants on a belt and with a relief. The design of the suit of amateur motorcyclists (sports jacket and pants) was built according to the method of “Mueller and Son”. Further modeling of reliefs, yokes, cuffs and other structural elements was performed.