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首页> 外文期刊>Journal of Materials Engineering and Performance >Stress Wave Attenuation in Aluminum Alloy and Mild Steel Specimens Under SHPB Tensile Testing
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Stress Wave Attenuation in Aluminum Alloy and Mild Steel Specimens Under SHPB Tensile Testing

机译：SHPB拉伸试验下铝合金和温和钢标本中的应力波衰减

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摘要

Investigations on the effect of intensity of incident pressure wave applied through the striker bar on the specimen force histories and stress wave attenuation during split Hopkinson pressure bar (SHPB) tensile testing are presented. Details of the tensile SHPB along with Lagrangian x-t diagram of the setup are included. Studies were carried out on aluminum alloy 7075 T651 and IS 2062 mild steel. While testing specimens using the tensile SHPB setup, it was observed that the force calculated from the transmitter bar strain gauge was smaller than the force obtained from the incident bar strain gauge. This mismatch between the forces in the incident bar and the transmitter bar is explained on the basis of stress wave attenuation in the specimens. A methodology to obtain force histories using the strain gauges on the specimen during SHPB tensile testing is also presented. Further, scanning electron microscope images and photomicrographs are given. Correlation between the microstructure and mechanical properties is explained. Further, uncertainty analysis was conducted to ascertain the accuracy of the results.
机译：提出了对通过撞针杆施加在分裂霍普金森压力棒（SHPB）拉伸检测期间通过撞针杆施加的入射压力波强度的影响。包括拉伸SHPB的细节以及设置的拉格朗日X-T图。在铝合金7075T651上进行研究，是2062个温和的钢。在使用拉伸SHPB设置的测试试样的同时，观察到从发射器杆应变仪计算的力小于入射杆应变仪所获得的力。在图案中的应力波衰减的基础上解释入射杆和发射器条之间的力之间的不匹配。还介绍了在SHPB拉伸试验期间使用试样上的应变计获得力历史的方法。此外，给出了扫描电子显微镜图像和显微照片。解释微观结构和机械性能之间的相关性。此外，进行了不确定性分析以确定结果的准确性。

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