ArticleMaterials (Basel, Switzerland)2018
Experimentally Achievable Accuracy Using a Digital Image Correlation Technique in measuring Small-Magnitude (<0.1%) Homogeneous Strain Fields.
Article in Materials (Basel, Switzerland), 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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7 citing papers in PubMed.
- Digital image correlation technique for the kinematic assessment of laser system optomechanical mounts.Scientific reports · 2025Article
- Improved virtual extensometer measurement method in complex multi-fracture situation.Scientific reports · 2022Article
- The impact of stem fixation method on Vancouver Type B1 periprosthetic femoral fracture management.SICOT-J · 2022Article
- Article
- A novel specimen shape for measurement of linear strain fields by means of digital image correlation.Scientific reports · 2021Article
- Coupled Thermomechanical Response Measurement of Deformation of Nickel-Based Superalloys Using Full-Field Digital Image Correlation and Infrared Thermography.Materials (Basel, Switzerland) · 2021Article
- Detection of the Strains Induced in Murine Tibias by Ex Vivo Uniaxial Loading with Different Sensors.Sensors (Basel, Switzerland) · 2019Article
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Abstract
Measuring small-magnitude strain fields using a digital image correlation (DIC) technique is challenging, due to the noise-signal ratio in strain maps. Here, we determined the level of accuracy achievable in measuring small-magnitude (<0.1%) homogeneous strain fields. We investigated different sets of parameters for image processing and imaging pre-selection, based on single-image noise level. The trueness of DIC was assessed by comparison of Young’s modulus (E) and Poisson’s ratio (ν) with values obtained from strain gauge measurements. Repeatability was improved, on average, by 20⁻25% with experimentally-determined optimal parameters and image pre-selection. Despite this, the intra- and inter-specimen repeatability of strain gauge measurements was 5 and 2.5 times better than DIC, respectively. Moreover, although trueness was also improved, on average, by 30⁻45%, DIC consistently overestimated the two material parameters by 1.8% and 3.2% for E and ν, respectively. DIC is a suitable option to measure small-magnitude homogeneous strain fields, bearing in mind the limitations in achievable accuracy.
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