Home / Standards / GB/T 46221-2025 GB/T 46221-2025 Active Test method for mode III interlaminar fracture toughness of fiber-reinforced plastic composites 纤维增强塑料复合材料III型层间断裂韧性的测定 Standard Type GBT ICS 83.120 CCS Q23 Status 现行 Issue Date 2025-08-29 Implementation 2026-03-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A