The past weeks I have worked almost full time in the lab trying to make the equipment ready for low cycle fatigue testing. We have a new videoextensometer! It is a camera used for studying the sample and register the resulting strain during testing. The camera registers the distance between two white markers of aluminum oxide. … Continue reading “Graffiti and research, a possible marriage?”
We are back from Argentina and ready for lab work. The machine is now finally running again after the failure! Professor Jonsson is also doing some lab work. A picosecond laser, which will be used for cutting and processing, is being installed. More to come!
A few weeks ago the testing in our corrosion-fatigue rig did not go well. The machine somehow went into position control instead of load control, which resulted in the stroke moving upwards. This put a lot of load on the test specimen and the chamber, which then both broke. We had to repair the induction coil. … Continue reading “Starting up the rig after failure”
We spent the second day at the testXpo looking at the fatigue testing machines. Vibrophore is a group of machines suitable for high-cycle fatigue testing. Some of them were extreme, like the one on the first photo below – a 1000kN machine. The second one we looked at, 50kN, is maybe more suitable for us. What … Continue reading “Zwick/Roell TestXpo day 2”
I struggled many hours with the stereo microscope to get nice pictures of fracture surfaces but did not succeed. A colleague advised me to use a DSLR instead. With this setup I finally got some good images!