Experimental Mechanics

, Volume 59, Issue 2, pp 149–162 | Cite as

Self-Adaptive Digital Volume Correlation for Unknown Deformation Fields

  • B. Wang
  • B. PanEmail author


Digital volume correlation (DVC) has evolved into a powerful tool for quantifying full-field internal deformation. In existing subvolume-based local DVC, subvolume size and shape function are two key user-defined parameters closely related to the DVC measurement errors. In routine implementation, the user must define fixed subvolume size and shape function according to prior experience and intuition, which cannot ensure accurate measurements, particularly for unknown complex heterogeneous deformation fields. Self-adaptive selection of optimal subvolume size and the best shape function is therefore highly desirable to realize full-automatic and quality DVC measurements. In this work, we first establish theoretical error models that relate total displacement errors to subvolume sizes and shape functions. By minimizing the V-shaped models of theoretically predicted total errors, optimal subvolume size and the best shape function can be identified as inputs for self-adaptive DVC analysis at each calculation point. The accuracy advantage of the presented self-adaptive DVC approach over classic one using fixed subvolume size and shape function is demonstrated through numerically simulated three-point bending tests.


Digital volume correlation Optimal subvolume size Best shape function Adaptive optimization 



This work is supported by the National Natural Science Foundation of China (NSFC) (11872009, 11632010), the National Key Research and Development Program of China (2018YFB0703500), the Aeronautical Science Foundation of China (ASFC) (2016ZD51034), and State Key Laboratory of Traction Power of Southwest Jiaotong University (Grant No. TPL1607).


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Copyright information

© Society for Experimental Mechanics 2018

Authors and Affiliations

  1. 1.Institute of Solid MechanicsBeihang UniversityBeijingChina

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