高速测量系统
VIC-3D High-Speed System
 

非接触全场动态应变测量系统

Non-Contact Full-Field Dynamic Strain Measurement System

高达500,000帧/秒的图像采样速度 Up to 500,000 frames per second.

 

 

 

系统概述 VIC-3D High-Speed System Overview

 

VIC-3D高速（HS）数字图像相关系统是一种用于全场形状，位移，速度，应变等的高速测量系统。 可提供帧速率从1,000到500,000 Hz的不同级别方案，并且可根据您的应用和预算进行配置定制。 另外还可以参阅VIC-3D Ultra High-Speed system page页面，了解最高达5MHz的帧速率方案。 我们的系统通过采集软件VIC-Snap HS与其支持的高速摄像机进行了精简和集成，使用户可以轻松获取校准和测试图像，无缝地同步控制图像采集并以正确的格式保存，以便在VIC-3D中进行快速数据分析。 此外，VIC-Snap HS可以通过附带的数据采集系统，以模拟信号的形式逐帧同步记录外部的加载或位移数据信息。

The VIC-3D High-Speed (HS) Digital Image Correlation system is a high-speed measurement system for full-field shape, displacements, velocities, strains, and much more.  Systems with frame rates from 1,000 to 500,000 Hz are available, and configurations are customized to your applications and budget.  See the VIC-3D Ultra High-Speed system page for frame rates up to 5MHz. Our systems are streamlined and integrated with supported high-speed cameras with acquisition software VIC-Snap HS, which allows the user to acquire calibration and test images with ease.  Synchronized images are seamlessly acquired and saved in the correct format for fast data analysis in VIC-3D.  Furthermore, VIC-Snap HS enables external analog data to be recorded via an included data acquisition system synchronizing load or displacement data frame-by-frame.

除完全集成控制的高速摄像机外，VIC-3D HS系统还包括标准VIC-3D系统的所有优点，如跟踪并计算视场内每个数据点（像素子集）的形状、运动和应变。 由于该数据是以三维方式计算的，因此可以直接测量平面外位移，从本质上消除偏差影响。 其所有的计算都可以通过VIC软件套件快速自动完成。

The VIC-3D HS system includes all the benefits of the standard VIC-3D system in addition to fully-integrated high-speed cameras. Shape, movement, and strain are tracked and computed for every data point (pixel subset) within the field of view.  Since this data is calculated in three dimensions, out-of-plane displacements are measured directly, essentially eliminating bias. All calculations are done quickly and automatically with the included VIC software suite.

子弹冲击防弹衣的全场变形与位移测量 High Speed Ballistic Impact & Digital Image Correlation

 

 

技术概述 Technology Overview

 

高速摄像机对于高速事件的定性评估非常有用; 然而，当使用不适合的处理软件从图像获取定量数据时可能非常繁琐。 运动跟踪软件某种程度上可以帮助解决这个问题，但也只能跟踪定义点的运动，而且通常不太准确。 由于VIC-3D HS系统分析基于样品表面的散斑图案，其捕获全视场数据并测量局部应变区域就变得更加容易。作为额外的好处，VIC-3D还集成了标志点追踪功能。 如果仅在目标点处需要测量位移，例如碰撞测试假人的头部或四肢，则此功能会非常有用。 包括（但不限于）碰撞测试、安全气囊展开、振动分析、鸟撞试验、弹道试验、爆炸试验、跌落试验、Hopkinsen(Kolsky)杆测试、断裂力学研究等等。

High-Speed cameras are very useful for the qualitative assessment of high speed events; however, it can be very tedious to obtain quantitative data from images without good software.  Motion tracking software helps with this problem, but can only track movement at defined points, and is generally less accurate.  Since the VIC-3D HS system analyzes a speckle pattern which is applied to the surface of the specimen, full-field data is captured and local strains area easily identified and measured.  VIC-3D also includes FREE integrated marker tracking capabilities, as an added benefit.  This can be useful if displacements are only needed at select points, such as the head or limbs on a crash test dummy.  Common dynamic applications for this powerful system included (but not limited to) crash testing, air bag deployment, vibration analysis, bird strike tests, ballistic events, explosive events, drop tests, Kolsky bar test, fracture mechanics, and much more.

 

 

系统特性 System Features

 

以下是VIC-3D HS系统的一般特性; 但是，系统配置根据具体用途会有所差异。 请随时致电我们来讨论您的应用需求，因为我们的目标是提供完全满足您的准确需求的系统。

Below are the general features of the VIC-3D HS system; however, system configurations do vary.  Please call us to discuss your applications as it is our goal to provide you with accurate information about every system that is right fit for you.

  • 3D坐标，位移，速度和完整应变张量的全场测量
  • 帧速率可高达500,000 fps，分辨率可高达4.0 MP
  • 平面内测量分辨率：高达0.01像素
  • 平面外测量分辨率：高达0.02像素
  • 应变精度高达局部0.01％，全局0.005％
  • 应变范围从0.01％到超过2000％
  • 自动校准
  • 使用CSI专有的Vic-Snap HS图像采集软件可以轻松控制高速摄像机，以评估和控制实验全过程的精度
  • 强大的数据可视化工具
    • 数据云图显示可以覆盖在测试样本的图像上
    • 根据用户定义的线条，圆或点从3D图中提取数据
    • 用于统计分析、应力 - 应变曲线等数据的后处理工具
  • 一年的技术支持和软件升级。
    • 7*24小时提供实时技术支持
    • 同时提供现场支持和咨询
  • 标准的两年硬件更换保修。
  • Full-field measurements of 3D coordinates, displacements, velocities, and complete strain tensors
  • Frame rates up to 500,000 fps, resolutions up to 4.0 MP
  • In-plane measurement resolution: up to 0.01 pixels
  • Out-of-plane measurement resolution: up to 0.02 pixels
  • Strain resolution up to 0.01% local, 0.005% global
  • Strain ranges from 0.01% to over 2,000%
  • Automatic calibration
  • High-speed cameras can be easily controlled using our proprietary Vic-Snap HS image acquisition software
  • Powerful tools for visualizing data
    • Contour displays which can be overlaid onto images of the test specimen
    • Data extraction from 3D plots based on user defined lines, circles or points
    • Post-processing tools for statistical analysis, stress-strain curves, and more
  • One year of technical support and software upgrades.
    • Live technical support is available Mon-Fri 9am-5pm EST.
    • On-site support and consulting is also available.
  • Standard two year replacement warranty for defects in materials and/or workmanship on all parts.

 

 

系统参数 System Specifications

 

以下是常见VIC-3D HS系统配置的规格 Below are the specifications for common VIC-3D HS system configurations:

系统型号 VIC-3D HS-T1* VIC-3D HS-T2*
图像采集器满幅分辨率 1MP to 4MP 1MP
帧速率 2,000 to 200,000 fps 10,000 to 500,000 fps
板载内存 Up to 128GB internal Up to 128GB internal
可记录图像数量 Dependent on memory & frame rate Dependent on memory & frame rate
模拟数据记录 +/- 10V, up to 8 input channels +/- 10V, up to 8 input channels
面内位移精度 0.00001 * FOV or better 0.00001 * FOV or better
离面位移精度 0.00002 * FOV 0.00002 * FOV
应变精度 50µε or better 50µε or better
应变范围 from 0.005% to >2,000% from 0.005% to >2,000%
最小测量区域 12mm 12mm

* Specifications may vary depending on camera selection.

 

应用案例 Application Example

 

industrial_1_whitebox由于复杂的测试设置和高数据采集速率的需要，在高速动态压缩试验中研究金属的力学特性一直具有挑战性。 目前，有关变形速度在10?500s-1应变率下的文献很少。 利用高速摄像机，VIC-3D HS系统可以高精度地量化整个区域的三维表面位移和应变。 由于其高精度、高灵活性和易用性，数字图像相关（DIC）近年来在这样的高速应用中已经广泛流行。

Studying the behavior of metals during a high-speed dynamic compression event has always been challenging due to the complex test set up and fast data capture rates required. Currently, very little literature is available regarding deformation behavior at strain rates of  10 to 500s-1. Utilizing high-speed cameras, the VIC-3D HS system can be used to quantify the surface displacements and strains in three dimensions over the entire field with great precision. Digital Image Correlation (DIC) has gained widespread popularity over recent years in such high-speed applications due to its high accuracy, flexibility and ease of use.

 

industrial_2在这个案例中，一个6mm直径的金属圆柱形样品以50s-1的应变速率被压缩。 VIC-3D HS系统用于捕捉实验过程中样品表面的位移和应变。 通过样本制备随机散斑图案，使VIC-3D分析软件能够轻松追踪变形到亚像素精度。 尽管高速摄像机能够使用更高的采集速率，但在此次测试中，它们被设置为14,400fps的适当帧率，以达到实验过程中获取足够数量的图像的同时最大化空间分辨率。 图像采集器在1024 x 400像素的分辨率下进行后触发控制。 碰撞发生后，图像被传输到计算机的硬盘，然后使用VIC-3D分析软件进行后处理。

In this example, a 6mm diameter cylindrical specimen was compressed at a strain rate of 50s-1. The VIC-3D HS system was used to capture the  surface displacements and  strains on  the  specimen during the event. A random speckle pattern is applied to the specimen that allows the analysis software to easily track the deformation to sub-pixel accuracy. Although the high- speed cameras are capable of much higher capture rates, for this test they were set to an appropriate frame rate of 14,400fps to maximize spatial resolution while acquiring an adequate number of images during the event. The cameras were post-trigger at a resolution of 1024 x 400 pixels. After the event, the images are transferred to the computer’s  hard  drive, and  then  post-processed using VIC-3D analysis software.

图片由俄亥俄州立大学的Amos Gilat和Jeremy Seidt提供  Images courtesy of Amos Gilat & Jeremy Seidt at Ohio State University.

 

 

更多信息 More Information

 

Download the VIC-3D HS flyer.

Please contact info@acqtec.com or visit our Contact Us page for your quotation today.