摘要
球压试验中传统的压痕测量方法由于难以准确区分压痕的真实边界,很容易导致测量结果出现较大偏差。本文介绍了一种测量压痕尺寸的新方法,通过调整平行光的照射角度得到部分较为清晰的压痕边界,并应用光学投影仪采集清晰的压痕边界点,最后对采样点进行最小二乘法拟合计算得到压痕的直径。通过比对验证该方法的试验结果较为准确。
The traditional method of ball-pressure test indentation size measurement is easily lead to larger deviation, because it is difficult to accurately distinguish the real boundary of indentation. This article introduces a new method, By adjusting the irradiation angle of parallel light to get relatively clear impression boundary, then using the Optical projector sample points from it and square fitting to calculate the diameter of indentation. The result of the method validated by comparing. applying the least- is＇accurate that be
出处
《电子测试》
2013年第10期28-30,共3页
Electronic Test
关键词
球压试验
压痕
最小二乘法
ball-pressure test
indentation
Least-square method
