利用線陣CCD非接觸測量材料變形量的方法

用線陣CCD 作為光電傳感器非接觸測量材料拉伸過程中的變形量，不但比常規(guī)的引伸計
測量的方法更客觀，而且可以測量材料拉伸變形到斷裂的全過程。該方法能在X 和Y 兩個方向上同時測量材料變形量，可以獲得材料在實驗的全過程中兩個方向的"應(yīng)力－應(yīng)變"關(guān)系曲線。采用CCD 拼接技術(shù)，測量精度可達(dá)到1mm，測量范圍80mm。
關(guān)鍵詞：非接觸測量；線陣CCD；應(yīng)力測量；變形測量
Abstract: Measurement of the deformation quantity of a material during stretching process by using linear CCD detectors in non-contact mode, not only is more objective than the common extensometer measurement method, but also can measure the whole process from stretching deformation to breaking .The deformation quantity of a material can be simultaneously measured at both direction of X and Y and the stress-strain curves of the both direction during the whole experimental process of a material can be obtained. With CCD splicing technique, the measuring accuracy can be reached 1mm and measuring range 80mm.
Key words: Non-contact measurement；Liner CCD；Stress measurement；Deformation measurement