西安交通大学信息机电研究所西安交通大学模具与先进成形技术研究所技术研究特色西安交通大学工业三维摄影测量技术发展路线三维全场变形技术概述面向复杂机械和新型材料运行工况下或现场使用单位简介研究生招生XTDICXTDVCXTRTXTMicroXTDIC 3D控制箱数字散斑全场应变XTDP三维光学测量坐标变换XTDCAL工业近景摄影测量XTSD静态变形XTDA大型飞机风洞大视场高速运动物体动态变形和运动轨迹XTSOXTOMXTOM INSPECTOR三维扫描仪XTFLC板料热成形三维全场应变检测试验机XTSM板料和管材胀形成形试验的三维全场变形检测系统板料成形膜结构双轴双向拉伸试验机双轴四缸电液伺服静态、动态、疲劳试验机双向对称微拉伸试验机(用于光学和电子显微镜)TOMS-汽车模具三维光学快速检测系统专用系统核心技术:复杂工况三维全场动态变形检测技术关键技术产品应用领域系列产品概述三维全尺寸快速检测解决方案:大型复杂工件产品的反求和快速质量检测其他光学体式显微镜测量板料液压胀形试验的三维全场变形检测数据动画演示泡沫铝物体内部变形测量实验板料成形极限FLC快速测定(3D-DIC)飞机风洞模型三维全场应变检测(数字图像相关法)一种基于DIC技术识别焊缝材料参数的新方法高温三维全场应变测量(3000摄氏度以内)高速拉伸变形技术发展路线高速冲击振动模态分析实验---数字散斑应用圆棒试件疲劳实验汽车车桥的静态变形和数字散斑三维全场应变实验木材压缩和弯曲性能试验----全场应变分析型号和配置------XTDIC数字散斑应变测量分析一般测量步骤 XTDIC数字散斑系统计算步骤-----XTDIC数字散斑系统显示和编辑计算结果----XTDIC散斑系统输出功能------XTDIC数字散斑系统大幅面三维全场应变测量视频----XTDIC三维数字散斑动态应变测量分析系统沙土全场变形实验-相似材料钛合金试件压缩变形三维数字散斑试验拉伸试验三维全场应变测量总体功能--XTDIC三维数字散斑动态应变测量分析系统主要功能---XTDIC三维数字散斑动态应变测量分析系统变形分析功能--XTDIC三维数字散斑动态应变测量分析分析曲线功能---XTDIC三维数字散斑动态应变测量报表功能---XTDIC三维数字散斑动态应变测量分析系统截线分析---XTDIC三维数字散斑动态应变测量分析系统等势线分析--XTDIC三维数字散斑动态应变测量分析XTDIC数字散斑系统与电子引申计比对试验XTDIC三维数字散斑动态应变测量分析系统三维全场应变测量分析重型卡车车架和车门全方位静态变形和全场应变检测发动机活塞缸体受力三维静态变形实验相似材料模型变形实验-标志点变形和全场变形两种方法复合材料节点试验---基于XTSD的三维静态变形测量大型结构件大变形三维摄影测量相似材料模型实验-光学三维变形测量变形分析应用大尺寸大变形静态测量某汽车覆盖件冲压全场应变检测步骤和流程汽车覆盖件(长到6米)板料冲压全场应变三维检测板料成形极限FLC试验板料剪切实验装置大型汽车模具制件的实际板料成形三维全场应变检测数字图像相关法(散斑应变)在板料力学性能测试中的应用板料成形网格应变测量实验快速使用说明---XTSM板料成形应变测量分析系统评估模式说明-----XTSM板料成形分析计算模式-XTSM板料成形网格应变分析系统三维点云处理---XTSM板料成形网格应变分析系统网格模式---XTSM板料成形网格应变分析系统XTSM板料成形应变测量分析系统板料成形网格变形分析楼房振动变形实验飞机风洞模型静态变形测量飞机结构件运动特性的动态视觉测量系统动态变形和运动轨迹汽车模具快速质量检测和比对分析路面构造三维扫描及三维坐标获取TOMS汽车模具摄影测量系统实现汽车模具实型数字化检测汽车模具三维光学系统应用于汽车覆盖件回弹的计算三维检测应用比对分析和质量检测焊接过程高温三维全场应变实时检测焊接失稳变形光学非接触三维检测的研究三维全场变形应变系统在焊接学科的研究和应用焊接过程三维全场应变检测实验采用XTSD静态变形系统的焊接过程三维变形检测实验采用XTOM面扫描系统进行焊接变形实验焊接变形试验--光学三维动态变形测量大尺寸无缝焊接管道三维测量和变形分析焊接变形和应变分析船用螺旋桨叶片检测大型飞机三维光学快速测量建模关键技术研究大型水轮机叶片、汽轮机叶片、船舶螺旋桨的快速检测手机零部件三维测量测量实例三维光学测量的应用领域逆向设计应用客车逆向设计快速建模案例轿车、客车、卡车、火车等车辆的组装后产品质量检测大型挖掘机铲斗模型的建模和测量测量实例 测量系统软件界面三维扫描测量实例 逆向和检测汽车模具检测案例 大型泡沫和铸件快速检测其他测量案例行业应用复杂工况三维全场动态变形 检测技术三维全场变形技术概述应变(strain)工业摄影测量光束平差(捆绑调整)自标定方法数字图像相关法(Digital Image Correlatiom,DIC)工业数字近景摄影测量与机器视觉的关系机器视觉(Machine Vision)工业数字近景摄影测量Photogrametry国内外DIC相关研究链接国内外三维检测Strain Measurement by Digital Image Correlation数字散斑全场应变分析工业近景摄影测量静态大尺寸大变形动态变形和运动轨迹三维扫描和建模板料成形网格变形分析焊接变形和应变分析比对分析和质量检测点云处理和三角化相机标定其他综述
XTDIC 3D full field deformation and strain measure


XTDIC 3D full field deformation and strain measurement system











Application Fields

Material testing(Displacement, Strain, Youngs 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

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 XTDIC

XTDIC 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. XTDIC 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

XTDIC 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 XTDIC is used to measure the specimen deformation of the whole process.


Application of XTDIC in wood mechanics
Experiment content


(1) To get the Youngs modulus and Poissons 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:Youngs modulus: 14.77GPa;Youngs modulus: 0.7817


Fracture mechanics

XTDIC 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 XTDIC 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 XTDIC 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. XTDIC which is a non-contacting optical system is ideal for the investigation of sand characteristics.

Technical data

System configuration

XTDIC-1M-15- TC

XTDIC-1.4M-15- RS

XTDIC-2M- ET

Frame Rate

15 fps

15 fps

14 fps

Camera Resolution

0.8~1.4M pixel

1.4M pixels

2 M pixels

Measuring Range

Several mm2 to several m2

Several mm2 to several m2

Several mm2 to several m2

Strain Measuring Range

0.03%   up to   >200%

0.03%   up to   >200%

0.03%   up to   >200%

Strain Measuring   Accuracy

up to 0.02%

up to 0.02%

up to 0.02%

System configuration

XTDIC-1M-120- BHS

XTDIC-5M-15- HR

IC-4M-60- HRS

Frame Rate

120 fps

7¡«15 fps

60 fps

Camera Resolution

1M pixel

5M pixel

4M pixel

Measuring Range

Several mm2 to several m2

Several mm2 to several m2

Several mm2 to several m2

Strain Measuring Range

0.01%   up to   >200%

0.01%   up to   >200%

0.01%   up to   >200%

Strain Measuring   Accuracy

up to 0.01%

up to 0.01%

up to 0.01%

System configuration

XTDIC-1M-500- HS

XTDIC-1M-5000- SHS

Frame Rate

500 fps

5000 fps

Camera Resolution

1M pixel

1M pixel

Measuring Range

500 fps

5000 fps

Strain Measuring Range

0.01%   up to   >200%

0.01%   up to   >200%

Strain Measuring   Accuracy

up to 0.01%

up to 0.01%

地址:西安交通大学曲江校区博源科技广场大厦C座14层1047室
版权所有:西安交通大学 机械工程学院  先进技术制造研究所

联系电话:  0755-86665401

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