Józef Brzęczek, Jerzy Chodur, Janusz Pietruszka,
Abstract The basis for the computation of the service life of the PZL M28 was the results of the full-scale fatigue tests of the structure [1]. As the PZL M28 is a commuter category airplane according to the 14 CFR Part 23 and CS-23 regulations, the test objects were: (1) wing and wing load carry-through structure, (2) empennage and attached fuselage structure. Additionally, there were fatigue tests carried out for the landing gear and other selected elements including control system elements. The ...
Tópico(s): Mechanical Failure Analysis and Simulation
2014 - De Gruyter | Fatigue of Aircraft Structures
Józef Brzęczek, Jerzy Chodur, Janusz Pietruszka,
Abstract Service life of the PZL M28 is computed based on the results of the full-scale fatigue tests of the structure [1]. As the PZL M28 is a commuter category airplane according to the 14 CFR Part 23 and CS-23 regulations, the test objects are: (1) wing and wing load carry-through structure, (2) empennage and attached fuselage structure. Additionally, there are fatigue tests carried out for the landing gear and other selected elements including control system elements. The aircraft load carry-through ...
Tópico(s): Mechanical Engineering Research and Applications
2014 - De Gruyter | Fatigue of Aircraft Structures
Mariusz Kubryn, Henryk Gruszecki, Leszek Pieróg, Jerzy Chodur, Janusz Pietruszka, Józef Brzęczek,
Abstract The cable flight control systems are commonly used for the control of small airplanes. In these systems, the cables are the only elements transmitting loads from the pilot to the control surfaces. During a flight the cables are moving through pulleys and are subjected to variable loads. A simple analysis of stress in the cable shows that the stress generated by the cyclical bending on the pulleys causes the fatigue of the wires. This phenomenon was noticed on a military aircraft of the ...
Tópico(s): Fatigue and fracture mechanics
2018 - De Gruyter | Fatigue of Aircraft Structures
Dariusz Łukowiec, Magdalena Gwóźdź, Alina Brzęczek‐Szafran, Tomasz Wasiak, Dawid Janas, Jerzy Kubacki, Stanisław Wacławek, Adrian Radoń,
One-dimensional transition metal materials are promising supports for precious metals used in energy production processes. Due to their electrochemical properties, 3d-group metals (such as Ni, Co, and Fe) can actively interact with catalysts by a strong metal–support interaction. This study shows that changing the Ni:Co ratio makes it possible to modulate the structure of the catalyst supports, which, in turn, provides a tool for designing their electrical and electrochemical properties. For example, ...
Tópico(s): Advanced battery technologies research
2024 - American Chemical Society | The Journal of Physical Chemistry Letters