| 拱形三点弯曲试样应力强度因子K_I的光弹性测定 |
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| 引用本文： | 管大椿,甘平,邵永丽,张德懿,段迺琴,王煜.拱形三点弯曲试样应力强度因子K_I的光弹性测定[J].北京工业大学学报,1982(3). |
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| 作者姓名： | 管大椿 甘平 邵永丽 张德懿 段迺琴 王煜 |
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| 作者单位： | 北京工业大学材料力学教研室
(管大椿，甘平，邵永丽，张德懿，段迺琴)，北京工业大学材料力学教研室(王煜) |
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| 摘 要： | 我们用光弹性法对拱弯试样的K_1作了测定,采用TSCM法和S—S法进行数据处理。文中推出了用三次曲线拟合实验数据的回归系数公式。光弹实验结果与柔度标定结果符合情况良好。
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The Photoelastic Determination of Stress-Intensity Factors K_I for Arch Three Point Bending Specimens |
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| Abstract: | The arch three point bending specimen was first suggested as the one of fracture toughness specimens by comrade Cheng Chi of our country. In order to perfect the mechanical calibration of this specimen, we determine the stress-intensity factors KI with photoelastic technique. Data management are conducted by application of Taylor Series Correction Method (TSCM) and Schroedl-Smith Method. In fitting the exper- imental data with cubic curve, the formulae of regression coefficient are derived in this paper. The photoelastic results are in good agreement with the results of compliance calibration method. |
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