CAJ | 학술논문

拉伸法测定金属的杨氏模量实验中，一般采用光杠杆测量出细丝因受拉力而产生的微小伸长量，测出的金属丝微小形变量是否精准决定了这个实验精确度。光杠杆测量出细丝因受拉力而产生的微小伸长量理应该包括了横梁弯曲的形变量。为减小横梁形变带来的影响，提高拉伸法测杨氏模量的实验精度，可从对金属丝的形变量进行修正和改变横梁结构两方面着手。
랍신법측정금속적양씨모량실험중，일반채용광강간측량출세사인수랍력이산생적미소신장량，측출적금속사미소형변량시부정준결정료저개실험정학도。광강간측량출세사인수랍력이산생적미소신장량리응해포괄료횡량만곡적형변량。위감소횡량형변대래적영향，제고랍신법측양씨모량적실험정도，가종대금속사적형변량진행수정화개변횡량결구량방면착수。
In the Young’s module experiment, when we test metal through stretching method, we usually test the tiny elongation of the metal filament through optical lever, and thus the accuracy of the experiment is decided by the accuracy of the filament ’s deformation quantity which must be considered in this experiment. To reduce the negative influence of bean deformation and improve the accuracy of the experiment, we can start with correcting the deformation of the metal filament and changing the structure for bean.