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The researsh of an Improved Displacement Smoothing Technique in Digital speckle correlation method

机译:数字散斑相关法中改进的位移平滑技术研究

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Digital speckle correlation method (DSCM) has been widely applied in deformation measurements due to the advantages of non-contact,full-field, large strain measurement and in-site measuring capability.For DSCM,the key problem is how to obtain a more precise displacement field from contaminated data by noise. In this paper, the principle of DSCM is introduced , a smoothing technique using FEM and 2D-GCV algorithm for improving the measuring precision of DSCM is presented, and the comparison of strain field before and after smoothing is offered.
机译:数字散斑相关法(DSCM)由于具有非接触,全场,大应变测量和现场测量能力的优点而被广泛应用于变形测量。对于DSCM来说,关键问题是如何获得更精确的测量结果。被噪声污染数据的位移场。本文介绍了DSCM的原理,提出了一种采用FEM和2D-GCV算法的平滑技术,以提高DSCM的测量精度,并比较了平滑前后的应变场。

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