横梁弯曲衍射法测杨氏模量实验仪的研制  

Development of bending crossbeam diffraction apparatus for Young modulus test

作　　者：梁霄[1] 田源[2] 铁位金[3] 谢瑛珂[1] 

机构地区：[1]重庆理工大学光电信息学院,重庆400054 [2]重庆理工大学设备处,重庆400054 [3]重庆理工大学后勤处,重庆400054

出　　处：《物理实验》2011年第8期31-33,共3页Physics Experimentation

摘　　要：弯曲法测杨氏模量实验中,对测试对象施加稳定的拉力及对横梁挠度变化进行精确的测量是实验能否取得成功的关键.横梁弯曲衍射法测杨氏模量实验仪通过螺旋加力装置配合拉力传感器实现了对拉力的连续、稳定控制并利用单缝衍射原理精确测量横梁挠度的变化,经过反复实验证明具有较高的测量精度.In Young modulus test with bending method,the steady force imposed on the test object and the accurate measurement of crossbeam deflection changes were the key factors.The instrument achieved continuous and steady control of force through helical servo brake and pull transducer and accurate measurement of the fluctuation of crossbeam deflection changes by single slit diffraction.The instrument had been granted a national patent and better measurement precision had been confirmed by repeated test.

关 键 词：杨氏模量 挠度 单缝衍射 

分 类 号：O343[理学—固体力学]