GDSBESv2025 Video Guide: 2.1 Basic test runthrough скачать в хорошем качестве

GDSBESv2025 Video Guide: 2.1 Basic test runthrough

Hello and welcome to this GDS BES tutorial video 2.1 basic test run through. In this video, the GDS BES V2025 software is used in conjunction to the GDS BES element hardware to perform bender element tests, which determine the shear wave velocity and small strain stiffness of a saw specimen. This is achieved by transmitting a waveform through the saw sample using the transmitter bender element and detecting it on the receiver. This guide will outline the basic steps to configure the voltage settings, select output waveforms, trigger the signal, using the graph to zoom into the response, using the PICS manually, and measuring the time difference and calculating wave velocity. So the first thing we're going to be doing is looking at the output file area. This is this quick little drop down here that opens this little menu. And you'll see you can actually have the name, so you can edit the name as to whatever you want. Then you can have the save directory, wherever that needs to be saved to. And you've got a little tick box to select if each shot will be saved automatically, and also what number of shot that you're doing. So in this scenario, on this example, I'm going to leave it at zero. And then again, it's all example data here. Next, we have our wave and element selection. I'm going to select S wave. You can also select P wave if you want. And then your element selection, you can select out of three pairs. I'm going to select pair one because I only have one pair. So then the next thing we're going to be doing is looking at the receive channel settings. Now, this is where we choose a suitable voltage range based on the expected signal strength received by the bender element. So this is all of the options that we can select from. I'm going to select minus 10 to 10 because that's what I'm expecting in my set results. And then we also have a tick box here. So say if you're expecting minus 10 to 10, but the range does go over for whatever reason, you can select this. It will automatically change if needed. And you also have your analog offset here, which I'm going to set to zero volts. Then moving on to the transmit channel settings, we have the wave type, which we can select from sinusoidal square, triangular custom or none, I even know signal. I'm going to select it for this example on sinusoidal. Then we have our amplitude. So we can select our amplitude anything from zero to 14 and then our period, which being reasonable needs to be anything in the range of zero to a thousand. I'm going to put it to 0.2. And then we've got the rest of the stuff, which I'm going to cover in a later video of receive signal inversion acquisition settings and filter parameters. So we're going to go and trigger the test now and trigger the shot of which all you have to do is go over to this button here and press. And as you can see, it's already triggered for me and it's plotted the data on this top graph or this top area. So now we can decide to zoom in in the area of interest. This graph works exactly like our GDS lab V24 onwards graphing. It's the same controls. So you left click on your mouse and then select the area you want to zoom into and then yet I'm zoomed in. This allows me to see the data a bit better. So as you can see, the system has already tried to move and selected the PIX one and two automatically. You can let the system do this or you can actually move them yourself. You can move them left and right by clicking and holding and then you just drag left and right on either of them. Well, there's another way you can do it manually by actually changing the values up here. For example, if I want this to go to 0.6, then that moves over like that. But then if I move it back, all the values still change automatically up the top. So once you're happy with everything, your PIX are in the correct place and you've got the correct velocity calculation that you're after, then you can actually press add to stack. And what this does is throw everything down to the below graph and this will allow repeatability over averaging multiple trials. That way you can compare as you go. OK, thank you very much for watching. This has been a basic test run through in GDS BES V25.