Proceedings of the International scientific and practical conference ―Science and Global Development‖ (February 20-22, 2026) / Publisher website: www.naukainfo.com. – Barcelona, Spain, 2026. - 229 p.

78 aligning them with real loading conditions acting on structural elements during operation. The purpose of the article is to substantiate the role of standardized testing methods as a universal tool for confirming the strength and reliability of mechanical systems, as well as to develop an approach to their comprehensive evaluation based on an efficiency matrix. The methodological framework of the study is grounded in a systems approach to the analysis of mechanical systems, the provisions of strength, reliability, and durability theories, principles of standardization and technical regulation, and methods of comparative analysis of experimental procedures. Elements of structural and functional analysis, expert evaluation, and multicriteria optimization were employed. In the course of the study, the main standardized testing methods were classified (static tensile, compressive, and bending tests; hardness determination; biaxial and tribological tests), and their informativeness, reproducibility, cost, and implementation complexity were analyzed. A comparative assessment of each method’s capability to reflect real mechanisms of material failure and degradation of structural elements was carried out. It is demonstrated that the effectiveness of confirming the reliability of mechanical systems depends not only on the accuracy of individual tests but also on their integrated combination, taking into account operating conditions, loading characteristics, and critical performance parameters. It is substantiated that one- dimensional evaluation criteria do not provide sufficient completeness of information for durability prediction. The main scientific result of the article is the development of conceptual foundations for constructing an integrated system for evaluating standardized testing methods as a tool for confirming the strength and reliability of mechanical systems based on a multicriteria approach. The proposed efficiency matrix of standardized testing methods enables their comparative analysis according to indicators of informativeness, accuracy,