Obtaining B-scan from exported A-scan data Answered

Ally

October 01, 2020 14:36

The MATLAB code for converting the A-scans to a single B-scan in the CFRP Delamination example is not working. I have tried troubleshooting it on my own with little success.

Help troubleshooting would be greatly appreciated!

Here are the error messages a receive:

Error using fread
Invalid file identifier. Use fopen to generate a valid file identifier.

Error in read_history (line 25)
OpenBytes = fread(Fid,1,OCForm);

Error in BscanPP (line 15)
Hist = read_history([folder '\' int2str(i) '\' histname]);

7 comments

Robin James
October 01, 2020 20:00

Hello Allyson,

You may have to run the 20 simulations in parametric sweep yourself by following the instructions given in the link given below:

https://support.onscale.com/hc/en-us/articles/360002625558-CFRP-Laminate-with-Delamination-B-Scan-2D

After this you will have to download the results of all 20 simulations into a directory and put that folder name in the piece of code that says :

folder = 'CFRP_Laminate-20190926-165029';

This line is at the beginning of the MATLAB code where you have to put your own folder name which may have a different date and time depending on when you solved it.

I actually ran this model yesterday by following all the instructions and it worked for me. I think you have to make sure that you have all the folders from "1" to "20" inside the folder "CFRP_Laminate-YYYYMMDD-HHMMSS"

Thanks

Robin James

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Ally
October 01, 2020 21:55

Hello Robin,

I followed those exact steps, however, I'm still getting the error messages shown above. Any idea how to fix the issue I'm having?

Thanks,

Allyson

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Robin James
October 01, 2020 22:04

Hello Allyson,

Let me see if I can send you some screenshots that can clarify your confusion.

Thanks

Robin

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Ally
October 01, 2020 22:06 (Edited November 12, 2020 20:30)

Hi Robin,

Here are my screenshots. I'm familiar with MATLAB and believe I have followed the steps correctly. Please let me know if you find an issue.

Thanks,

Allyson

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Robin James
October 01, 2020 22:11 (Edited October 01, 2020 22:13)

Hello Allyson,

I think I understood your error.

Please put the 2 Matlab files (code and function) outside into the "Project" folder. Right now these 2 Matlab files are inside the "CFRP_Laminate-20200930-212309" folder and therefore are not able to find the folder "CFRP_Laminate-20200930-212309".

Please let me know if this fixes your problem.

Thanks
Robin

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Ally
October 01, 2020 22:13

Hi again,

Thank you so much!! That fixed it! Such a silly issue, I should've caught it myself.

Your help is much appreciated!

Allyson

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Robin James
October 01, 2020 22:16

Hello Allyson,

Your welcome. I am also just learning how to use OnScale. I hope I can learn more advanced stuff.

Glad I could help

Thanks
Robin

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