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.

87 These methodologies are applied not only in manufacturing but also in testing centers for product certification in accordance with international and national requirements, which are of particular importance in the context of harmonization with European standards. Therefore, standardized testing methodologies for mechanical systems represent a fundamental instrument for confirming their reliability, strength, and operational safety. Testing conducted in accordance with standardized protocols ensures objective and comparable results, which is critically important for product certification under technical regulations. The implementation and strict adherence to such methodologies enhance the competitiveness of products in both domestic and international markets. Prospects for further scientific research in this field include: - the development of new standardized methodologies for complex multiaxial loading states; - the application of computational modeling to improve the correlation between experimental results and real service conditions; - the expansion of testing methodologies for composite and additively manufactured materials. REFERENCES: 1. Rockwell hardness test. (n.d.). In Wikipedia: The Free Encyclopedia. Available at: https://en.wikipedia.org/wiki/Rockwell_hardness_test 2. Ball-on-ring test. (n.d.). In Wikipedia: The Free Encyclopedia. Available at: https://en.wikipedia.org/wiki/Ball-on-ring_test 3. Ball-on-three-balls test. (n.d.). In Wikipedia: The Free Encyclopedia. Available at: https://en.wikipedia.org/wiki/Ball-on-three-balls_test 4. Structural and mechanical testing. International Automotive Federation (IAF). Available at: https://www.iaf.com/uk/tests/structural-mechanical/ 5. Scientific and Production Center ―Nadiinist‖ (Reliability). List of material