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XJTUDIC 3D full field deformation and strain measurement system
Application Fields£º
Material testing(Displacement, Strain, Young¡¯s Modulus, Poisson Ratios)
Component testing(Displacement, Strain)
Biomechanics (bone, muscle, blood vessels, etc.)
Microscope surface and strain measurement
Fracture mechanics
FEA validation
High speed measurement & Vibration analysis
Failure investigation
FLC determination
System Features£º
3D surface coordinates, 3D surface displacement & surfaces strain
3D display of measured values
Applicable to any material
Fast, easy and accurate calibration
Flexible measurement range: mm2 to m2
Strain measuring range: 0.01% up to several 100%
Flexible and easy to use trigger function
Frame Rate£º0-12Hz, 24Hz, 480Hz, 960 Hz
Principle of XJTUDIC
XJTUDIC combines stereo vision with digital image correlation. It can measure the 3D coordinates, 3D displacement and surface strain of object by tracking the speckle image of the object surface in the deformation process. XJTUDIC system is portable, fast, high precision and easy to use.
Speckle tracking process
Easy operation
The system calibration base on photogrammetry is fast, accurate and can adapt to different measurement area. With the lifting frame, one can operate the system easily. Different type of light source can provide well illumination condition. Multi-function control box provides variety of A/D acquisition, D/A out, and camera triggering.
Calibration panels for different measuring range
Lifting frame Control box
Friendly software interface
(1) Supports both 2D and 3D measurement
(2) Flexible camera calibration, and external image series also applicable
(3) Different image acquisition mode
(4) Area of interest, facet size, and step length is adjustable.
(5) 18 types of deformation and strain measurement results can be obtained.
(6) 3D display of measured results.
(7) Different kinds of post-processing function, including filter, interpolation and so on.
(8) Coordinates transformation function.
(9) Results analysis tools, including section, stage point, point couple, and curving, etc.
(10) Reporting function
(11) Export movie
Software interface
Material property testing
XJTUDIC system can provide the characterization of material parameters far into the range of plastic deformation. Its powerful data analysis tools allow the determination of the local and amplitude of maximum strain, which are important functions in material testing.
Experiment setup Stain distribution of steel
Isolines of strain FLD
Major strain of aluminum Isolines of strain
Titanium alloy compress test
The titanium alloy sample is 5mm high and its diameter is 3mm. Universal testing machine is used to compress the sample, and XJTUDIC is used to measure the specimen deformation of the whole process.
Application of XJTUDIC in wood mechanics
Experiment content£º
(1) To get the Young¡¯s modulus and Poisson¡¯s ratio of wood by compression test
(2) To get the deformation field information of wood in the three points bending test
Displacement field & Ɛx strain field in compression test
Displacement field in three point bending test
Ɛx strain field in three point bending test
Measured result£º
Young¡¯s modulus£º14.77GPa
Young¡¯s modulus£º0.7817
Fracture mechanics
XJTUDIC system is also an ideal solution for fracture mechanics investigation. The full-field measurement deliver exact information about local and global strain distribution, crack growth, and can be used for the determination of important fracture mechanics parameters.
Fracture growth image
Strain distribution in the fracture process
Large measuring volume application
The measuring area of XJTUDIC can vary from several mm2 to several m2. For large measuring area situation, the spray stencil is used to create the point pattern.
Spray stencil Specimen with created point pattern
Experiment setup Measured result
Application of XJTUDIC in civil engineering
The deformation and flow characteristic of sand is a research focus in civil engineering, however can¡¯t be measured easily using traditional method. XJTUDIC which is a non-contacting optical system is ideal for the investigation of sand characteristics.
Technical data
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System configuration
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XJTUDIC-1M-15-TC
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XJTUDIC-1.4M-15-RS
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XJTUDIC-2M-ET
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Frame Rate
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15 fps
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15 fps
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14 fps
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Camera Resolution
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0.8~1.4M pixel
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1.4M pixels
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2 M pixels
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Measuring Range
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Several mm2 to several m2
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Several mm2 to several m2
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Several mm2 to several m2
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Strain Measuring Range
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0.03% up to >200%
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0.03% up to >200%
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0.03% up to >200%
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Strain Measuring Accuracy
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up to 0.02%
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up to 0.02%
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up to 0.02%
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System configuration
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XJTUDIC-1M-120-BHS
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XJTUDIC-5M-15-HR
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IC-4M-60-HRS
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Frame Rate
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120 fps
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7¡«15 fps
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60 fps
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Camera Resolution
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1M pixel
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5M pixel
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4M pixel
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Measuring Range
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Several mm2 to several m2
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Several mm2 to several m2
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Several mm2 to several m2
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Strain Measuring Range
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0.01% up to >200%
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0.01% up to >200%
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0.01% up to >200%
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Strain Measuring Accuracy
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up to 0.01%
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up to 0.01%
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up to 0.01%
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System configuration
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XJTUDIC-1M-500-HS
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XJTUDIC-1M-5000-SHS
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Frame Rate
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500 fps
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5000 fps
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Camera Resolution
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1M pixel
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1M pixel
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Measuring Range
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500 fps
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5000 fps
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Strain Measuring Range
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0.01% up to >200%
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0.01% up to >200%
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Strain Measuring Accuracy
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up to 0.01%
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up to 0.01%
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Comments
Is your software free?
Is your software free? If no, can you provide a trial version to the Opticist users?