News
Customize list
-
Shocking in the field of pressure metrology
Accurate measurements of time-varying pressure are important to many industrial sectors. The most stringent requirements for accurate high-frequency pressure measurements come from the automotive, aerospace and ballistics industries, where pressure with frequencies up to few hundred kHz must be accurately measured. To provide dynamic calibrations of pressure meters in the required frequency range and therefore enable accurate measurements in the most demanding industries, many national metrology institutes worldwide are developing a primary dynamic measurement standard for pressure based on the shock tube. In the shock tube, the calibrated pressure meter can be excited by an almost ideal pressure step change generated by the reflection of the shock wave from the end wall of the shock tube. Such an extremely rapid reflection of the shock wave, in addition to generating the high-frequency pressure, inevitably also excites unwanted mechanical vibrations, which can produce spurious output signals of the pressure meter being calibrated.
-
Preserving the inflatable Trump baby blimp
Researchers at the Heritage Science Laboratory Ljubljana (HSLL) of the Faculty of Chemistry and Chemical Technology, researchers at University College London (UCL) and conservators at the Museum of London have collaborated in interdisciplinary research in the field of heritage science, studying the stability and risk of displaying the 6-metre high and 3-metre wide polyvinyl chloride (PVC) inflatable. The results of chromatographic analysis of the material, studies of accelerated degradation of model samples and modelling diffusion and evaporation enabled the conservators to assess the environmental risks to the object during storage and exhibitions.
-
Tribological Research on Surfaces and Contacts for Green Mobility
Mobility GT: The largest project at the faculty of mechanical engineering of UL so far – CoFund project of Horizon Europe was awarded the Seal of Excellence, with which Prof. Mitjan Kalin, PhD, who will coordinate a project of 24 postdoctoral research projects worth 7.6 million euros.
