SURFACE TOPOGRAPHY AND ROUGHNESS PARAMETERS OF ELECTROSPARK COATINGS ON TITANIUM AND NICKEL ALLOYS
G. Kostadinov, P. Danailov, R. Dimitrova, M. Kandeva, T. Penyashki, V. Kamburov, A. Nikolov, B. Elenov
Applied Engineering Letters, Vol. 6, No. 3, pp. 89-98, 2021
https://doi.org/10.18485/aeletters.2021.6.3.1

PREVENTION OF WATER INGRESS IN HYDRAULIC SYSTEMS
S. Goljat, V. Tič, D. Lovrec
Applied Engineering Letters, Vol. 6, No. 3, pp. 99-104, 2021
https://doi.org/10.18485/aeletters.2021.6.3.2

SURFACE OXIDATION OF AL-SI ALLOYS AT ELEVATED TEMPERATURES
A. Miteva, A. Petrova, G. Stefanov
Applied Engineering Letters, Vol. 6, No. 3, pp. 105-110, 2021
https://doi.org/10.18485/aeletters.2021.6.3.3

INFLUENCE OF ALTERNATING TEMPERATURE LEVELS ON THE WEAR BEHAVIOR OF RADIAL LIP SEALS: TEST RIG DESIGN AND WEAR ANALYSIS
L. Merkle, M. Baumann, F. Bauer
Applied Engineering Letters, Vol. 6, No. 3, pp. 111-123, 2021
https://doi.org/10.18485/aeletters.2021.6.3.4

EXPERIMENTAL STUDY REGARDING THE CORROSION BEHAVIOUR OF HEAT EXCHANGER BRASS TUBES IN THE PRESENCE OF DIFFERENT AGGRESSIVE ENVIRONMENTS
I. Ramadan, M. Tănase
Applied Engineering Letters, Vol. 6, No. 3, pp. 124-131, 2021
https://doi.org/10.18485/aeletters.2021.6.3.5