在核压力容器钢的中子辐照脆化评价中，断口剪切面积百分比是一个重要的参数。
Percent shear fracture appearance is an important factor to evaluate neutron irradiation embrittlement of nuclear pressure vessel steel.
结果表明：X70管线钢焊接接头热影响区冲击试样的冲击功与断口剪切面积基本成线性比例关系，冲击功越高，剪切面积越大。
The results indicated that impact absorbed energy of heat-affected zone in welded joint of X70 pipeline steel were proportional with shearing area on the whole.
该系统可实现疲劳断口条纹尺寸测定、区域面积积分、裂纹角度测量等功能。
By using this system, a series of functions for measuring the size of the fatigue section, integrating the area of region and determining the Angle of the crack can be completed.
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