Thank you! For more detailed information about creating the ideal speckle pattern, please consult our knowledgebase article here: correlated.kayako.com/article/38-speckle-pattern-fundamentals
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.
Hi Pasha, thank you very much for your comment. Unfortunately, we do not have a video explaining the strain computation. However, you can find more information about how the strain is computed in the following two articles: correlated.kayako.com/article/2-strain-tensors-and-criteria-in-vic correlated.kayako.com/article/43-strain-filter-selection
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?
Hello, and thank you for the question. Our systems allow for integration of analog load data. The user may graph this against the strain output obtained by our software. Obtaining local strains within a 50-70 micron region would require a stereomicroscope VIC-3D system or high magnification zoom lens for VIC-2D. However, a 50mm x 50mm region would require a more traditional setup, with two imaging systems (camera + lens) set up in stereo. We are happy to talk to you more about your application and configure a system to meet your needs. Please contact sales@correlatedsolutions.com or visit www.correlatedsolutions.com/contact-us/ for more information.
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?
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.
Thanks for your question. For more information about Hencky strains, please check here: correlatedsolutions.com/support/index.php?/Knowledgebase/Article/View/2/0/strain-tensors-in-vic
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.
Thank you for your question. Absolutely! While most stamping processes won't allow us to see the specimen during deformation, strains can be obtains by imaging the sample before and after deformation. Please email sales@correlatedsolutions.com and we'll be happy to talk to you more about your application.
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Great video! Very informative, are there any guidelines for size of the speckles? For example roughly
Thank you! For more detailed information about creating the ideal speckle pattern, please consult our knowledgebase article here: correlated.kayako.com/article/38-speckle-pattern-fundamentals
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.
Hi Pasha, thank you very much for your comment. Unfortunately, we do not have a video explaining the strain computation. However, you can find more information about how the strain is computed in the following two articles:
correlated.kayako.com/article/2-strain-tensors-and-criteria-in-vic
correlated.kayako.com/article/43-strain-filter-selection
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?
Hello, and thank you for the question. Our systems allow for integration of analog load data. The user may graph this against the strain output obtained by our software. Obtaining local strains within a 50-70 micron region would require a stereomicroscope VIC-3D system or high magnification zoom lens for VIC-2D. However, a 50mm x 50mm region would require a more traditional setup, with two imaging systems (camera + lens) set up in stereo. We are happy to talk to you more about your application and configure a system to meet your needs. Please contact sales@correlatedsolutions.com or visit www.correlatedsolutions.com/contact-us/ for more information.
Who's the team at 16:45?
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.
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
Thanks for your question. For more information about Hencky strains, please check here: correlatedsolutions.com/support/index.php?/Knowledgebase/Article/View/2/0/strain-tensors-in-vic
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.
Can we do DIC for pressing of sheet metals
Thank you for your question. Absolutely! While most stamping processes won't allow us to see the specimen during deformation, strains can be obtains by imaging the sample before and after deformation. Please email sales@correlatedsolutions.com and we'll be happy to talk to you more about your application.
Why I have an error in the post processing : there are no data points found?