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Technology applied: Industrial CT scan procedures

2023-02-14

Technology applied: Industrial CT(Computed Tomography) scan procedures

CT, Industrial computed tomography, computed tomography, 工業用CT, 電腦斷層, X光機, 工业用CT, 电脑断层, X光机, 産業用CT, コンピュータ断層撮影, X-ray machine,

In the previous articles, we have introduced how CT scans work. If you have not read the article, click the link below:

The following will explain how CT scans are applied in real life situations.

CT scan applications

In simple words, CT scan is using radiation to penetrate object to construct a 3D image of the object. Doing so, we do not have to break or cut the object open to find out what is inside. So, how is the technology used in different fields?

  • Industrial CT scan applications

    CT Scans are usually used in PD(Product Development), or QC(Quality Control) in the industrial field. CT can be utilized in quality check, defect detection, internal structural and etc. The link below is a video of how the automobile industry uses CT to scan the engine.

  • Medical CT scan applications

    We often see medical CT scans in scanning patients, animal to see bones, organs, and etc. Doctors can use these images to identify patients problems. The link below is RF’s application for dental CT.

    (* RF co.,ltd Youtube channel)

  • Academia CT scan applications

    Asides from industrial and medical CTs, very often CT scans are used by academic research. For example, scanning historical artifacts. Once the object is scanned, it will be easier for us to research, maintain, or repair the object. The following video is Tokyo’s National Museum’s application of how the CT scans are applied.

    (* National Tokyo Museum Youtube Channel)

CT Scan step by step walkthrough

Now that we have some understanding of how CT scan works, let us walk through how CT scan in action.
There are many companies that produce CT scans, but they are pretty much all the same. The differences between the CT scans are methods of scanning, penetration capacity, and accuracy.
In the following content, we will show how industrial CT scans are actually being used.

  • CT Scan and object to be scanned

    For the purpose of the demonstration, the CT scan we will use will be “RF NAOMi-CT 3D Industrial CT Scanner”. The object to be scanned is a mystery black little box. The purpose is to find out what is inside the box without opening or breaking the box.

    Pre-scan is a very important step when it comes to industrial CT scanning. Different materials require different penetration settings. Without the proper settings, the result may not be ideal, meaning you will not be able to see what is inside the object. Let us go through the scanning process step by step.

 

  • Scanning process

    First open the slide door of the NAOMi-CT, then put the object in the scanning area. Noticed that placement of the object is very important. Make sure the object is inside the scanning area. Close the slide door and choose a random setting then press “test scan”.

    After the test scan, we can identify there is a elongated object inside the box. However, the tet imagine is very dark and we cannot tell what it is. If this happen, the penetration capability is not enough. Therefore we have to choose a higher power setting to increase the penetrating force.
    NAOMi-CT, CT電腦斷層掃描, CT, Computed Tomography, コンピュータ断層撮影,

    After adjusting the power, the image now is much clearer than before. We can see easily the object inside and its structure. The test scan is used to find the proper power or penetrating setting. Also it is only a flat image of the object, 3D construction is not done at this point. After we find the ideal setting, then do we proceed to construct the 3D image. Please note, the box outside has now disappeared from the image. Different materials depending on its weight will be displayed with different power settings.
    NAOMi-CT, CT電腦斷層掃描, CT, Computed Tomography, コンピュータ断層撮影,

    Now we precede with the CT scan. The speed of the process is compressed 6X. The actual scanning process for this takes about 90 seconds.
    NAOMi-CT, CT電腦斷層掃描, CT, Computed Tomography, コンピュータ断層撮影,

  • Image process after the scan

    After the CT scan is complete, the system will automatically generate a rough image of the scan, we can then adjust few parameters to make the image easier to see.
    NAOMi-CT, CT電腦斷層掃描, CT, Computed Tomography, コンピュータ断層撮影,

    After adjusting the parameter, we can now clearly identify the object inside the box to be an USB storage, with a keychain on top.
    NAOMi-CT, CT電腦斷層掃描, CT, Computed Tomography, コンピュータ断層撮影,

    Now we open our box to make sure the result from our CT scan is the same. Of course it is, there is no black magic involved, just pure science.

    After confirming the result, we can freely move in 3 different axis of the constructed 3D image. We can even identify the connections on the PCB board to see if it is connected properly or even see detail image of all the parts.
    NAOMi-CT, CT電腦斷層掃描, CT, Computed Tomography, コンピュータ断層撮影,
    NAOMi-CT, CT電腦斷層掃描, CT, Computed Tomography, コンピュータ断層撮影,

At this point, we have achieved our initial objective of not breaking or opening the box to find out what is inside. In real life situations, utilizing CT scan can help us with quality control, identify problems, even reverse engineering.

In the next unit, we will explain how to set CT settings, government regulations, and most importantly how to choose the right CT scan for your purpose.

Until then、 cheers!

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