Rapid heating device for high-temperature Hopkinson pressure bar experiment

用于高温霍普金森压杆实验的快速加热装置

Abstract

一种用于高温霍普金森压杆实验的快速加热装置,它包括在屏蔽罩外设支承小车,屏蔽罩内设高频感应加热器,该加热器中心设陶瓷套管,套管的中央装置试件,试件两端分别与两陶瓷短杆的内端相连,两陶瓷短杆的外端分别与入射杆和透射杆的一端相连,应变片分别贴于入射杆和透射杆上并实现计算机同步数据处理的技术方案;它克服了现有霍普金森压杆实验用加热装置存在试件单独加热,加热和冲击不在同一位置进行,系统的准静态对接与同步精度难达要求,且结构复杂、操作烦锁,工作效率低,数据处理难度大,严重影响了霍普金森压杆实验的质量水平和精确度等缺陷;适合各种试验室的霍普金森压杆实验用,特别适合霍普金森压杆实验装置中金属试件的加热与应变片信息的即时数据处理。
The utility model discloses a rapid heating device for high-temperature Hopkinson pressure bar experiment. The rapid heating device adopts the following technical scheme: a bearing trolley is arranged outside of a shielding cover; a high-frequency induction heater is arranged in the shielding cover; a ceramic sleeve is arranged at the centre of the heater; a test piece is arranged at the centre of the sleeve; the both ends of the test piece are connected with the inner ends of two short ceramic rods respectively; the outer ends of the two short ceramic rods are connected with one end of each of an incidence rod and a transmission rod respectively; and strain gauges are bonded on the incidence rod and the transmission rod respectively and used for realizing computer synchronous data processing. With the adoption of the rapid heating device, the defect of serious influence on the quality level, accuracy and the like of the Hopkinson pressure bar experiment due to that the test piece is independently heated, heating and impacting are performed in different positions, the quasi-static butt-joint and synchronization accuracy of the system are difficult to achieve requirements, and the device is complex in structure, cockamamie to operate, low in working efficiency and high in data processing difficulty are overcome; and the rapid heating device is suitable for the Hopkinson pressure bar experiments of various test rooms, and especially suitable for heating for a metal test piece in a Hopkinson pressure bar experiment device and instant data processing for the information of the strain gauges.

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    CN-103024955-AApril 03, 2013湖南科技大学用于高温霍普金森压杆实验的快速加热装置
    CN-103024955-BApril 15, 2015湖南科技大学用于高温霍普金森压杆实验的快速加热装置