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Title of Journal: Exp Mech

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Abbravation: Experimental Mechanics

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Springer US

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DOI

10.1007/s002570050134

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1741-2765

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Accuracy of the Sampling Moiré Method and its Appl

Authors: S Ri T Muramatsu M Saka K Nanbara D Kobayashi
Publish Date: 2011/04/07
Volume: 52, Issue: 4, Pages: 331-340
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Abstract

Measuring accurate displacement distributions for largescale structures is an important issue and a very challenging task Recently a simple and accurate phase measurement technique called sampling moiré method Exp Mech 50–4501–508 2010 has been developed for smalldisplacement distribution measurements In this method the phase distribution of moiré fringes can be analyzed from a single grating image by simultaneously performing downsampling image processing and intensityinterpolation to generate multiple phaseshifted moiré fringe images In addition the phase of the original grating can also be obtained from the phase of the moiré fringe by adding the phase of the sampling grating In this study the measurement accuracy of the sampling moiré method was analyzed through computer simulations and a displacement measurement experiment Four factors of the sampling moiré method were investigated including the sampling pitch the order of the intensityinterpolation random noise and the form of grating The results show that determining the optimal sampling pitch is an important factor for obtaining better results but it is not critical In addition a practical application of the sampling moiré method is presented that involves a deflection measurement on a 10meterlong crane The experimental results demonstrate that submillimeter deflections of the crane can be successfully detected


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  2. Dynamic Separation of Resistance Spot Welded Joints: Part II—Analysis of Test Results and a Model
  3. Hydrodynamic Interactions at Low Reynolds Number
  4. Impact of Experimental Uncertainties on the Identification of Mechanical Material Properties using DIC
  5. New Developments in Proton Radiography at the Los Alamos Neutron Science Center (LANSCE)
  6. A Tensile Split Hopkinson Bar for Testing Particulate Polymer Composites Under Elevated Rates of Loading
  7. Mechanical Properties of Ti-6Al-4V Selectively Laser Melted Parts with Body-Centred-Cubic Lattices of Varying cell size
  8. Hybrid Thermoelastic Stress Analysis of a Pinned Joint
  9. Experimental Testing of a Moving Force Identification Bridge Weigh-in-Motion Algorithm
  10. Sensitivity to Axial Stress of Electro-Mechanical Impedance Measurements
  11. Modification of the Shear-Compression Specimen for Large Strain Testing
  12. Analysis of Cracks and Deformations in a Full Scale Reinforced Concrete Beam Using a Digital Image Correlation Technique
  13. Slip Damping Mechanism in Welded Structures Using Response Surface Methodology
  14. Effect of Varying Test Parameters on Elastic–plastic Properties Extracted by Nanoindentation Tests
  15. Application of Digital Image Correlation (DIC) in Dynamic Notched Semi-Circular Bend (NSCB) Tests
  16. Experimental Methodology for Studying Strain Heterogeneity with Microstructural Data from High Temperature Deformation
  17. Tailoring Beam Mechanics Towards Enhancing Detection of Hazardous Biological Species
  18. Strain Measurements Through Optimized Particle Tracking in Volumetric Images: Methodology and Error Assessment
  19. Comparison between Digital Fresnel Holography and Digital Image-Plane Holography: The Role of the Imaging Aperture
  20. Principle and Experimental Validation of a new Apparatus Allowing Large Deformation in Pure Bending: Application to thin Wire
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