Core Viewpoint - The newly approved national standard for carbon fiber composite materials will enhance testing methods and promote applications in various industries, including aerospace and automotive [1] Group 1: Standard Details - The national standard titled "Testing Method for Plane Biaxial Tensile Test of Carbon Fiber Composite Laminates" will be implemented on January 1, 2026 [1] - The standard specifies technical requirements for conducting plane biaxial static tensile load tests on carbon fiber composite laminates [1] - It addresses the limitations of existing strength testing standards by providing a comprehensive evaluation of material mechanical properties under biaxial stress conditions [1] Group 2: Industry Impact - The implementation of this standard is expected to significantly promote the application of carbon fiber composites in industries such as aerospace, new energy, rail transportation, automotive, and shipbuilding [1] - It will contribute to the development of existing strength criteria and propose new strength theories, ensuring the safety of composite structures in engineering applications [1] - The standard also aims to explore the failure mechanisms of composites under biaxial stress from a damage perspective, providing important engineering value and theoretical guidance [1] Group 3: Additional Standards - This is the second national standard approved in the year by the Lianyungang Fiber New Materials Research Institute, following the standard for "Recycled Carbon Fiber for Cement Concrete," which will be implemented on October 1, 2025 [1] - Both standards provide crucial support for the technical specifications and application promotion in the field of carbon fiber composites [1]