梯温型宽板拉伸止裂试验中的参量相关性分析

基金项目:

工信部高技术船舶项目(工信部联装[2014]508号)

详细信息

Relationship Analysis on Description Parameter of Temperature-gradient Double Tension Crack Arrest Test

摘要: 对梯温型宽板拉伸止裂试验中的止裂韧性K_ca、止裂温度T_K、止裂应力σ_ca的相关性规律进行了理论分析, 结果表明, 相同温度下的止裂韧性和止裂应力呈线性关系, 其线性系数由试板宽度W_s、温度场参数 (T₁₅₀、G_T) 和温度T_K确定;对21组试验数据的统计分析结果验证了该相关性规律。
- 宽板拉伸试验 /
- 止裂韧性 /
- 止裂温度 /
- 止裂应力
Abstract: Theoretical analysis is carried out on relationship between crack arrest toughness K_ca, crack arrest temperature T_K and crack arrest stress σ_ca in temperature-gradient double tension crack arrest test.Results indicate that there is a linear relation between crack arrest toughness K_ca and crack arrest stress σ_ca, while the linear coefficient is determined by specimen width W_s, temperature field parameters (T₁₅₀ and G_T) and crack arrest temperature T_K. Statistical analysis of 21 groups of test data confirms the validation of this relationship.
- wide plate tension test /
- crack arrest toughness /
- crack arrest temperature /
- crack arrest stress