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Issue:
Analysis of Validity of Dynamic Fracture Toughness Measurement
Author(s):
JIANG Fengchun
,
LIU Ruitang
Pages:
97
-
101
Year:
1999
Issue:
3
Journal:
JOURNAL OF HARBIN ENGINEERING UNIVERSITY
Keyword:
动态断裂韧性测试
;
示波冲击
;
有效性
;
平面应变
;
Abstract:
借助于船用945钢的动态断裂试验,对利用示波冲击测定材料动态断裂韧性方法的有效性进行了分析.结果表明,在加载速率K≈105MPa√m/s的条件下,中低强度钢仍发生弹塑性断裂,预裂纹夏比冲击试样的振动周期ι和断裂时间tf之间满足t>3ι条件,但冲击试样并不满足平面应变的条件.
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