Author:von Bergmann, HM; Forbes, A; Roberts, T; Botha, LRDate:Aug 2008Results are presented on the influence of acoustic waves on the performance of high-repetition-rate TEA CO2 lasers. It is shown that acoustic waves generated inside the laser cavity lead to nonuniform discharges, resulting in a deterioration ...Read more
Author:Mathekga, Mmamolatelo E; Ademi, S; McMahon, RADate:Dec 2019This paper contributes to the characterisation of the brushless doubly fed induction machine (BDFIM), which is attractive as a variable speed generator in applications (off-shore wind turbine) with minimum maintenance requirements. The BDFIM ...Read more
Author:Shatalov, MY; Joubert, SV; Coetzee, CEDate:Jan 2011Standing waves can exist as stable vibrating patterns in perfect structures such as spherical bodies, and inertial rotation of the body causes precession (Bryan’seffect). However, an imperfection such as light mass anisotropy destroys the ...Read more