In our newest video at X-ray University, we tackle a common question about 2D X-ray systems: Can we measure things inside a sample? Join us as we break down the basics of computed tomography and the calibration process, demonstrating the relationship between magnification and distance in the X-ray machine. The video provides a straightforward exploration of measuring both flat and three-dimensional samples, offering essential insights for users looking to grasp the nuances of their X-ray inspection machines.
Having journeyed through the intricacies of computed tomography and calibration in our latest video, you now possess a clearer understanding of measuring objects within your samples using a 2D X-ray system. We hope this insightful exploration empowers you with the knowledge to make the most of your X-ray inspection machine. If you have any questions or crave further clarification, don’t hesitate to reach out to us at (760) 752-1192. Stay tuned for more engaging content from X-ray University as we continue to unravel the mysteries of X-ray technology.
Hello. Welcome to X-ray University today. Another interesting question we get asked all the time. Can we measure things inside my sample in our 2D X-ray system? No, as you know. And we’re going to have another few down here explaining how computed tomography works. DCT We have a process to fully calibrate the sample so we know exactly the size of each walk with to the X-ray.
We don’t have the process intrinsically to the X-ray machine because it’s a function of your sample. Let me explain how that works. And for that explanation, I really have to go back to our good old equation that magnification is equal to one plus D1 over D2. Where do you want Is this between the sample and the X-ray sensor and D?
What is the distance between the X-ray source and the sample? This is the setup we have here, and actually, prime. That’s what we’re going to be using to show you how this relationship works. The sensor is on the top, the resource is on the bottom shooting X-ray photons through the sample vertically upward. All right. So what I did to help explain how this measurement business works on the X-ray, I put rulers inside the X-ray machine.
Those two rulers are exactly the same. Two, one in each, in the exact same position. So as you can see, they perfectly match each other. Right. So if you put a ruler here and you have a sample at the same magnification level, you’ll be able to measure it perfectly, right? You’ll be able to measure how many millimeters somebody micros your sample has.
Now, let’s see what happens if I move one of the rulers up by a couple of inches and how this relationship is going to change. So we’re going to take one of the samples. One of those rulers, Right? Exactly the same. It’s actually the one rule that I split in half. They were both sitting at the same location on the stage before, seeing the one thing true.
What I’m going to do is we’re going to get this one in exactly the same location. And then the other one I’m going to go ahead and place on top of this piece of all the form is transferred to X-ray, so we’re able to see through it. One of the same going the rulers is not going to be sitting higher than the other one.
So let’s go back and see what we get. All right. So now that I place one of the rulers higher than the other one, right? So what I did is the first ruler stayed where he was before, and the next one and placed significantly higher than the other one with a smaller one and a much larger D2, right.
So what does that mean? The smaller D1 and a larger D2. So that second sample got significantly less magnification compared to the first sample. Right. Now, if you look at the image here, you can see the original ruler. It is the second one that it moved up. You see how we decrease the magnification significantly so you can see more of the centimeter takes the ruler.
So what happens? What I’m trying to convey here, if you have a sample that’s really flat and you put a ruler back, should you be able to measure things in your sample? If your sample, on the other hand, is total right. It has any C significance then depending where on that vertical scale where you’re going to be, magnification is going to give you a different relationship between pixels and the size of the image.
I hope this has helped. Again, if you have any questions, give us a call at 76005211 and don’t forget to subscribe to our website for more content like this to help you understand and better use your X-ray inspection machine. Thanks for watching.
Dr. Bill Cardoso – Founder and CEO of Creative Electron.