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Correlated Solutions
เข้าร่วมเมื่อ 6 มิ.ย. 2012
Correlated Solutions offers industry-leading, non-contact strain and deformation measurement solutions for materials and product testing. These measurements can be made on length scales ranging from microns to meters and time scales as small as nanoseconds. Our engineers are specialists in non-contact deformation measurements, and are recognized as world leaders and inventors of digital image correlation (DIC). In addition to our powerful standard DIC systems, Correlated Solutions also offers advanced solutions and specialized systems for defect detection and vibration analysis. In addition to product updates, application examples, and DIC lectures, this channel offers a range of detailed tutorials to help anyone who is interested in learning about digital image correlation (DIC). Please subscribe to our channel to receive the most recently released videos.
Detecting micro-displacement phenomenon in viscoelastic materials using 3D digital image correlation
One of the most interesting things about working with digital image correlation is that sometimes unexpected phenomena emerge when you least expect it.
This video, outlining a recent test conducted at a local shooting range, demonstrates persuasively the potential of the VIC-3D 10 DIC system for identifying micro-displacements in viscoelastic materials. While analyzing the data generated when a 9mm round was fired into a 6x6x16 block of ballistic gelatin, Correlated Solutions engineers noticed a clear wave propagating through the gel. What was unusual in this case was that the wave PRECEDED the impact of the bullet.
Our initial speculation, based on the lack of a similar wave when different bullets were tested, is that in a lucky coincidence of target distance, bullet speed, and the extremely precise measurement capability of VIC-3D 10, we were able to capture a displacement phenomenon caused by the pressure wave which emerged from the initial firing of the pistol and isolate it from the impact of the bullet. Have a look at the video and let us know what you think!
Here are a few more details.
The test utilized a conventional stereo DIC setup. After a speckle pattern was applied to the gel and the table was secured, the system was calibrated using a 28mm Correlated Solutions laser-marked calibration target. A pair of Photron Fastcam Nova S16s - equipped with 80-200 F2.8 lenses - were focused and set to trigger in the VIC-Snap software using an external trigger switch. When the appropriate safety procedures were in place, a MAGTECH FMJ, 115g, 9mm round was fired at 1250 ft/s into the gel from approximately 15 feet. The cameras were center-triggered at the sound of the shot, and they both captured images - 768 x 496 pixels in size - at 30,000 frames per second. In total, the cameras captured and stored more than 330,000 image pairs during the test of which 3000 pairs were saved and used for the DIC analysis in VIC-3D 10.
We are confident that this level of precision measurement will be valuable to engineers working with a wide range of cutting-edge materials. To find out more about this test or to explore how industry leading optical measurement systems from Correlated Solutions can impact your research, contact one of our sales engineers today.
www.correlatedsolutions.com/
www.correlatedsolutions.com/vic3d-10
This video, outlining a recent test conducted at a local shooting range, demonstrates persuasively the potential of the VIC-3D 10 DIC system for identifying micro-displacements in viscoelastic materials. While analyzing the data generated when a 9mm round was fired into a 6x6x16 block of ballistic gelatin, Correlated Solutions engineers noticed a clear wave propagating through the gel. What was unusual in this case was that the wave PRECEDED the impact of the bullet.
Our initial speculation, based on the lack of a similar wave when different bullets were tested, is that in a lucky coincidence of target distance, bullet speed, and the extremely precise measurement capability of VIC-3D 10, we were able to capture a displacement phenomenon caused by the pressure wave which emerged from the initial firing of the pistol and isolate it from the impact of the bullet. Have a look at the video and let us know what you think!
Here are a few more details.
The test utilized a conventional stereo DIC setup. After a speckle pattern was applied to the gel and the table was secured, the system was calibrated using a 28mm Correlated Solutions laser-marked calibration target. A pair of Photron Fastcam Nova S16s - equipped with 80-200 F2.8 lenses - were focused and set to trigger in the VIC-Snap software using an external trigger switch. When the appropriate safety procedures were in place, a MAGTECH FMJ, 115g, 9mm round was fired at 1250 ft/s into the gel from approximately 15 feet. The cameras were center-triggered at the sound of the shot, and they both captured images - 768 x 496 pixels in size - at 30,000 frames per second. In total, the cameras captured and stored more than 330,000 image pairs during the test of which 3000 pairs were saved and used for the DIC analysis in VIC-3D 10.
We are confident that this level of precision measurement will be valuable to engineers working with a wide range of cutting-edge materials. To find out more about this test or to explore how industry leading optical measurement systems from Correlated Solutions can impact your research, contact one of our sales engineers today.
www.correlatedsolutions.com/
www.correlatedsolutions.com/vic3d-10
มุมมอง: 297
วีดีโอ
Dr. Michael A. Sutton Keynote 2024 SEM Annual Conference
มุมมอง 334หลายเดือนก่อน
In this video, co-founder of Correlated Solutions, Dr. Michael A. Sutton gives a keynote presentation at the 2024 Society of Experimental Mechanics Annual Conference in Vancouver, WA. His talk entitled “Recent Developments: Direct Pointwise Comparison of FEA and StereoDIC Measurements” covers the background research that led to the implementation of the integrated stress analysis feature in the...
Introducing VIC-3D 10 - Changes to the iris DIC Visualization Workspace
มุมมอง 2452 หลายเดือนก่อน
This is the second of a series of short videos that outline some of the new features in the latest version of VIC-3D 10 - the flagship 3D digital image correlation software from Correlated Solutions. In this video, we’ll go over some significant updates to the capabilities of the iris graphics engine that have now been implemented in VIC-3D 10. Introduced in VIC-3D 9, the iris workspace provide...
Introducing VIC-3D 10 - Changes to the DIC Analysis Workspace
มุมมอง 2162 หลายเดือนก่อน
We are proud to introduce VIC-3D 10 - the latest version of the flagship 3D digital image correlation software from Correlated Solutions. Building on iris, the graphics engine introduced in version 9, the all-new VIC-3D 10 delivers an unparalleled DIC analysis workspace with a range of new features designed specifically to facilitate 3D data analysis and visualization. This series of short vide...
Announcing VIC 3D 10
มุมมอง 3392 หลายเดือนก่อน
Correlated Solutions is proud to announce the release of VIC-3D 10, an unparalleled DIC workspace with features designed specifically to facilitate 3D data analysis and visualization. Building on iris, the data visualization engine introduced in Version 9, the all-new VIC-3D 10 delivers a range of new capabilities that broaden DIC’s scope for FFT projects, FEA validation, and integrated stress ...
Rapidly Discharging Lithium-ion Batteries & 3D Digital Image Correlation
มุมมอง 2374 หลายเดือนก่อน
"Investigating the strain and degradation parameters of rapidly discharging Lithium-ion batteries using 3D digital image correlation" Adaptive Real-Time Systems (ARTS) Lab College of Engineering and Computing University of South Carolina Battery: 18650 2500mAh 20A Battery Test System: NHR 9200 Digital Image Correlation System: VIC-3D from Correlated Solutions Correlated Solutions recently assis...
Engineering Week 2024 - Bridge Test
มุมมอง 1556 หลายเดือนก่อน
For Engineering Week 2024, we honor the iconic Gervais Street Bridge in Columbia, SC (the headquarters of Correlated Solutions for 25 years). Optical measurement technologies like Digital Image Correlation help bridge the gap between modeling and testing in additive manufacturing, and Correlated Solutions is excited to provide the tools for young researchers to push engineering into the future....
Fundamentals of Speckling for DIC
มุมมอง 3.2K8 หลายเดือนก่อน
This video covers the fundamentals of creating an effective speckle pattern for digital image correlation. In digital image correlation, one or more cameras take a series of images as a specimen deforms. Measurements are taken by precisely analyzing the position of unique groups of speckles on the surface of the object as it moves through successive images. Using an optimal speckle pattern is o...
Optical Vibration Measurement with VIC-3D FFT & Phantom T3610 High-Speed Cameras
มุมมอง 4959 หลายเดือนก่อน
This video goes behind-the-scenes to show a vibration measurement test using the latest version of VIC-3D High-Speed FFT with two Phantom T3610 cameras. The VIC-3D HS FFT system - the flagship digital image correlation software from Correlated Solutions - is a powerful measurement tool which combines state-of-the-art DIC software with the latest high-speed cameras from around the world. As we p...
Vibration Analysis with VIC-3D and Phantom High-Speed Cameras
มุมมอง 42210 หลายเดือนก่อน
This short video - produced in 4K entirely with the iris visualization engine that comes standard with the VIC-3D HS FFT digital image correlation software - features the results of a recent test conducted with Phantom High-Speed T3610 cameras to find the operational deflection shapes (ODS) which occur after excitation of a tuning fork. Stay tuned for more examples of how DIC from Correlated So...
Correlated Solutions VIC-3D + Pharsighted Ultra High-Speed Cameras
มุมมอง 48810 หลายเดือนก่อน
The VIC-3D HS system from Correlated Solutions is a powerful measurement tool which combines state-of-the-art digital image correlation software with the latest high-speed cameras from around the world. As we prepare for the release later this year of VIC-3D 10, we are eager to put the best high-speed cameras through their paces to see how they perform. Recently, we welcomed Bill Spinelli from ...
The Rise of the Experimentalist: A Paradigm Shift in Process
มุมมอง 211ปีที่แล้ว
As part of the celebration of our 25th anniversary, we reached back into the Correlated Solutions archives for this video of Dr. Michael A. Sutton delivering the Murray Lecture at the Society for Experimental Mechanics (SEM) Annual Conference in 2013. It's amazing to see how far DIC technology has come and even more exciting to imagine where it's going. Have you registered yet for this year's S...
Timoshenko Lecture 2022 - Dr. Michael A. Sutton
มุมมอง 448ปีที่แล้ว
On November 2, 2022, Dr. Michael A. Sutton, co-founder of Correlated Solutions, accepted the prestigious Timoshenko Medal from the American Society of Mechanical Engineers (ASME) in recognition of distinguished contributions to the field of mechanical engineering. From the ASME press release: "Professor Sutton receives the Timoshenko Medal for contributions in the creation and development of fu...
Welcome to the All-New Correlated Solutions Website
มุมมอง 179ปีที่แล้ว
Welcome to correlatedsolutions.com. For the last few years, we’ve been carefully planning an entirely new website from scratch to better frame the world-class digital image correlation systems from Correlated Solutions and to make sure the information our customers need is easy to find. Let’s have a look at some of the new features. First off, the menu has been completely reconfigured. Mouse ov...
World-Class DIC Training from Correlated Solutions
มุมมอง 783ปีที่แล้ว
Recently, we visited the impressive facilities at Clemson University’s ICAR project for a training session with their brand-new VIC-3D digital image correlation system. At Correlated Solutions, the whole team is committed to providing the most powerful and effective DIC systems in the world, and one of the things that sets us apart from the competition is our comprehensive training program. Aft...
Preview for SAVE 2022: Using DIC to Measure the Shape of Sound & Vibration - Part 2
มุมมอง 203ปีที่แล้ว
Preview for SAVE 2022: Using DIC to Measure the Shape of Sound & Vibration - Part 2
Capturing Test Images in VIC-Snap for DIC
มุมมอง 2.2K2 ปีที่แล้ว
Capturing Test Images in VIC-Snap for DIC
Importing Images and Pre-analysis in VIC-3D for DIC
มุมมอง 3K2 ปีที่แล้ว
Importing Images and Pre-analysis in VIC-3D for DIC
Calibration for DIC using VIC-Snap & VIC-3D
มุมมอง 6K2 ปีที่แล้ว
Calibration for DIC using VIC-Snap & VIC-3D
High Speed Ballistic Impact, Digital Image Correlation, & Data Visualization with Iris
มุมมอง 9982 ปีที่แล้ว
High Speed Ballistic Impact, Digital Image Correlation, & Data Visualization with Iris
Using DIC to measure the Shape of Sound and Vibration - 2022 IMAC-XL
มุมมอง 1.3K2 ปีที่แล้ว
Using DIC to measure the Shape of Sound and Vibration - 2022 IMAC-XL
Preview IMAC-XL 2022: Using DIC to Measure the Shape of Sound & Vibration
มุมมอง 3352 ปีที่แล้ว
Preview IMAC-XL 2022: Using DIC to Measure the Shape of Sound & Vibration
Dual-sided, Laser-marked, Speckle Calibration Targets
มุมมอง 5712 ปีที่แล้ว
Dual-sided, Laser-marked, Speckle Calibration Targets
Real-Time Measurement Demo at Auto Test Expo 2021
มุมมอง 3712 ปีที่แล้ว
Real-Time Measurement Demo at Auto Test Expo 2021
Introducing the VIC-3D Digital Image Correlation System Version 9.4
มุมมอง 1.9K2 ปีที่แล้ว
Introducing the VIC-3D Digital Image Correlation System Version 9.4
Olympic Equipment Meets Digital Image Correlation
มุมมอง 1.2K3 ปีที่แล้ว
Olympic Equipment Meets Digital Image Correlation
Introduction to Digital Image Correlation - Guest lecture at Oregon State University April 22, 2021
มุมมอง 5K3 ปีที่แล้ว
Introduction to Digital Image Correlation - Guest lecture at Oregon State University April 22, 2021
That's the acoustic wave of the shot - you were using ammunition that travels just above the speed of sound - it likely slowed before it hit the gel.
Great talk!
I want to apply in python. Do you have code for this
Awesome guys! This update is going to save me ALOT of time :)
I just noticed the overlaying of the 3D data onto the cleaned-up video of the battery. That is just *chef's kiss*. I"m going to have to have a go at that.
Thanks, this is one of our first attempts to really stretch the legs of the new timeline features in VIC-3D 10. Once it gets widely released (next month at SEM), we’re excited to see what kind of DIC visualizations our clients dream up.
Is DIC method effective measuring vibrations in big machines, like engines or bombs? or is it less effective when the object is too big
Thank you for this question. As a method, DIC scales extremely well to large sizes, and we have significant experience with large scale testing (from engine castings to full scale wind turbine blades and rocket fairings). A special calibration method is used to handle the large field of view, and a different set of techniques are used to apply speckle patterns. There are several large scale application examples on our website (www.correlatedsolutions.com/applications), and our Sales Engineers are always happy to answer more specific questions about your testing requirements (www.correlatedsolutions.com/contact). We look forward to hearing from you soon.
Who's the team at 16:45?
Will u provide add-in for motion amplification?
And double check the complete setup by taking a dozen frames of an undisturbed specimen. The strains should of course be zero, but they will not be. The magnitude of the reported strains will be the noise floor of results. If the values are too high for your satisfaction, move the camera closer for larger apparent speckles, refocus carefully, or increase the f-stop of the camera. DIC has an inherent noise floor of about 50 microstrain compared to strain gages with a 25 microstrain error. Of course, DIC has the enormous advantage of measuring all 3 surface strains over the entire image in each measurement. And generally at a cost of only 20% of strain gages for only a few measurements.
My experience and that of a few papers for speckle size is more like 8 to 10 pixels. The results were more reliable. Easy math for speckle size = dimension as seen in camera divided by the number of pixels of the camera in that direction (2000) times the 8 to 10. For example, the Specimen size visible in the camera is 10 inches. Again using 2000 pixels and 10 pixels per speckle finds: speckle size = 10 inch / 2000 * 10 = 0.05 inch. Double-check by sampling speckles and counting pixels across them. And about half that spacing between them if they are circular. BTW: Correlated Solutions speckle stampers are great.
Thank you for your comment. While larger speckles will generally yield improved confidence in the subset correlation uncertainty, they are not necessarily better. This is because larger speckles require larger subsets, and larger subsets reduce spatial resolution. With an ideal setup (well-positioned cameras, diffuse illumination, good stereo calibration, etc.), 3 to 5 pixel diameter speckles with appropriate density will yield the best correlation confidence at an ideal subset size, which will produce the best spatial resolution and overall results. However, when the ideal pattern / setup is not achievable, larger speckles and subsets may be used to reduce the risk of noisy and/or aliased data.
Nice video, Correlated! I really like the "behind the scenes" aspect. It helped me follow along in a domain I'm not very familiar! I really need to sit down and become more proficient with iris, these captures and presentations are slick!
Congratulations, Dr. Sutton!
The strain "first principal strain" is 2D strain, right?
Thanks for your question. Yes, the 'first principal strain' is 2D in this case and contains information from exx, eyy, and exy. To get a true 3D strain you would need DVC which is a volumetric analysis instead of analysis of image pairs from cameras. Please contact our support team for a more in-depth dive into the equations. www.correlatedsolutions.com/support
Very nice captures!
Thank you!
Can I perform this kind of comparison of FEA and DIC results in vic-2D software? If not, how can I make a proper comparision of those analysis?
Where did you see the value of the differences in the DIC-FE plot? because you say the difference in delta_U is 1.3 mm, but the results in the right side show another number.
Thanks for your question. To clarify, the difference in delta_U is a range of values across the specimen. The total difference between the max (0.65 mm) and min (-0.55 mm) values across the full surface is ~1.3 mm. I hope this helps answer your question. If you have any further inquiries, please reach out to our Support Team for more detailed assistance. www.correlatedsolutions.com/support
Nice presentation
Congratulations, Dr. Sutton!
@ 3:25 When reducing the exposure at this point, what level do we go to?
Hi, thanks for your question. The goal at this point is to reduce the exposure so that it is low enough to focus the cameras. If you need further assistance, please contact our support team. www.correlatedsolutions.com/support
I am using VIC-snap 9 and the calibration toolbar is inactive. I can take calibration images but they do not appear in the calibration toolbar. What could be the reason? I can calibrate in Vic-3D though
@@CorrelatedSolutions VIC-3D integration is already Enabled but the module is inactive. Also the DAQ and Fulcrum are also inactive. I am using a Vic 3D 2010 though. could that be due to a mismatch between Vic-3d and vic snap?
What NI DAQ is it? Model number etc..
Is this camera C-mount or F-mount?
Thanks for your question. This camera has a large format sensor and comes with an F-mount adapter.
Very interesting. I am using a 3D setup from your company. Why I cannot study smaller than 7 mm with VIC 3D. I can see very clear images of my specimen with surface area of 3 * 5 mm. I do not understand the limitations.
can you provide a lesson about fatigue test? about equipment and how to test
Hello, Thank you for the informative video! Do you have a video explaining strain calculation in-depth? If not, could you please explain how strain is computed from the displacements? The explanations in the minute 14 of the video was not enough to help me understand.
very interesting presentation. could you share the ppt? I want to study it for teaching. Thank you very much.
Thank you. We are happy to share a PDF of the presentation. Please reply with the best email to use, and we will get that out to you.
very good tutorial
Been using the software for a few years, the tutorial is very nice and complete! I was wondering, is the overexposure during calibration recommended for black spot on white background as well?
Excellent tutorial!
awesome video, what application did you use to set animating load ?
Hi, thanks for your question. Many of the animations in this video were made using the new graphics engine 'iris' which is now included in the VIC-3D 9 digital image correlation software. Iris allows users to add text boxes with syntax that reads and displays the values from the file created by VIC-Snap, which records the load data via an analog input. For more information, please visit our support portal: correlated.kayako.com/ or contact our sales engineers: www.correlatedsolutions.com/contact-us/
First
Very nice video, great work 👍
Thank you very much!
Thanks. Nice overview.
Wow Great!
Congratulations, Alistair and CSI's team!!! Proud to be at least a small partner of this very competent team. Correlated Solutions is simply amazing.
Great video! Very informative, are there any guidelines for size of the speckles? For example roughly <5% of the image in diameter. How would you go about speckling a very small component?
Is it possible to get Stress-strain curve in tension and compression using this technique at micro-scale in concrete ITZ region (50-70 um size region)?. Or else at least for a 50mm*50mm concrete cube in compression?
I like the narrators name - Bluejay Robinson.... Two birds, one name... jk.. Nice video ..Very helpful
Nice wee demo
Can we do DIC for pressing of sheet metals
Nice work
How the hencky strains are calculated here.Also can you make one video about the output of the DIC testings it is useful for correlation with FEA
We've recently released a video about comparing DIC with FEA data. Check it out here: th-cam.com/video/7tyUZKsDt0A/w-d-xo.html If you have any other questions, please contact one of our sales engineers who will be happy to help find the best solution for your work.
Hi for a drop test of a PET bottle, would you need a sensor, say like a pressure sensor or different sensor at the bottom of the base plate/ bottom plate during impact to calculate deformation/strain. Or is it only the cameras by itself with its triangular positioning which does the job to calculate strain/deformation?
You also spoke about imaging sensor, what kind of sensor do you mean?
Thank you for watching the video. For a drop test you would probably want to use two high-speed cameras to capture the 3D shape and deformation. The DIC method does not require an additional sensor, the deformation/strain is computed from the images. Additional sensors can be used, e.g., the load applied to a specimen is often recorded with the images. For high speed tests, we sometimes use other sensors for triggering the cameras.
The image sensor is the chip inside the camera used for recording the images. Until a few years ago, they used to be mostly CCD sensors, but the industry has almost completely moved to CMOS technology since.
Hi, what if glass layer is in between the camera lens and the speckled object. The object is being dropped from a height to the ground/base plate. Will this set up cause a refraction due to the glass layer present n result in incorrect deformation results.
nice video
Thanks
Nice work!
Beautifully done! Congratulations.
Thank you very much!