Bulletin of
Vitebsk State
Technological
University

Abstract

Relevance. This article presents a comparative analysis of methods for assessing the strength of thread joints in shoe upper components according to the current GOST 9290-76 and the new GOST ISO 17697-2023. This approach is relevant due to the need to ensure high product quality in a competitive market. Experimental studies were conducted on genuine leather samples using two methods of the new standard: Method A (determination of material cut resistance with needles) and Method B (determination of thread seam tensile strength).

The analysis revealed methodological differences between the approaches, as well as their advantages and disadvantages. It was determined that the new standard offers a more comprehensive assessment, including analysis of the material's resistance to damage, while it has limitations such as the static nature of testing, the difficulty of preparing samples from finished products, and the lack of an integrated quality indicator.

The practical significance of this work lies in the potential use of the results to improve quality control in footwear factories, optimize technological processes, and support the transition to new standardized methods. Based on the analysis, recommendations are provided for addressing the identified deficiencies of the standardized method. The scientific novelty of this work lies in conducting one of the first comparative studies of these standards in domestic research field.

The objective of this work is to identify methodological limitations in approaches to assessing the strength of thread connections to establish quality control of shoe upper blanks.

The research methods are standard test methods for assessing the strength of seams in shoe upper.

The results of this work include recommendations for addressing the deficiencies of the standardized method for assessing the strength of thread joints in shoe upper components.

A study of methods for assessing the strength of thread joints in shoe uppers