CAJ | 학술논문

在所发明的一种基于一级气体炮的高速冲击拉伸试验装置（HSTF）上，于多根纯铜杆件上安装特制夹具，控制试件不同的局部延伸，得到试件不同阶段的实验结果，取得冲击拉伸杆颈缩与断裂“凝固化”了的过程信息，揭示了纯铜试件在冲击拉伸下动态断裂过程的不同阶段．对于回收的纯铜试件，进行了扫描电镜分析．将．Ragab提出的在轴对称颈缩区域中心放置特征空穴的简化模型从准静态推广到动态，旨在预测纯铜杆件在冲击拉伸下的局部化颈缩与断裂．
재소발명적일충기우일급기체포적고속충격랍신시험장치（HSTF）상，우다근순동간건상안장특제협구，공제시건불동적국부연신，득도시건불동계단적실험결과，취득충격랍신간경축여단렬“응고화”료적과정신식，게시료순동시건재충격랍신하동태단렬과정적불동계단．대우회수적순동시건，진행료소묘전경분석．장．Ragab제출적재축대칭경축구역중심방치특정공혈적간화모형종준정태추엄도동태，지재예측순동간건재충격랍신하적국부화경축여단렬．
A high-speed tensile facility （HSTF） invented by us was applied to interrupt tests for pure copper bars controlled locally at different levels of elongation. It was realized to isolate and identify the various stages of the dynamic fracture process of pure copper bars under impact tension. The results of scanning electron microscopical （SEM） investigation of recovered pure copper specimens were shown. The axisymmetric necking rod model with a central void under static tension presented by Ragab was extended to predicting localized necking and fracture of pure copper bars under impact tension.