Results 191 to 200 of about 630,138 (258)

Gigacycle Fatigue of the Turbocharger Gear Wheel

Inorganic Materials, 2022
   The goal of the study is to elucidate the reasons for early fracture of the gear wheel teeth of a Cameron TA9000 turbocharger (1820 kW) after an operational load up to 1. 3 x 109 cycles.   The chemical composi­tion and the microstracture of the tooth metal were studied using the methods of metallography, microhardness and optical microscopy.
L. R. Botvina, M. R. Tyutin, A. R. Alexandrov   +2 more
openaire   +2 more sources

Gigacycle Fatigue Properties of Wrought Aluminum Alloys

Materials Performance and Characterization, 2023
ABSTRACT Fatigue data sheets of the National Institute for Materials Science disclose the results of gigacycle fatigue tests conducted on wrought aluminum alloys. The materials tested were hot-rolled plates and extruded round bars of A5083P-O (two heats), A7075-T6 (three heats), and A6061-T6 (three heats).
Yoshiyuki Furuya, Hideaki Nishikawa, Hisashi Hirukawa, Nobuo Nagashima, Etsuo Takeuchi   +4 more
openaire   +2 more sources

TECHNOLOGICAL SUPPORT OF GIGACYCLE FATIGUE OF SHAFT PARTS

Transport engineering, 2023
Anatoliy Totay, Oleg Fedonin, Alexandr Khandozhko, Dmitriy Petreshin   +3 more
openaire   +2 more sources

Gigacycle Fatigue of Metallic Materials Evaluated by Ultrasonic Fatigue Testing

JOURNAL OF THE JAPAN WELDING SOCIETY
Y. Furuya
openaire   +2 more sources

Gigacycle fatigue of ferrous alloys

Fatigue & Fracture of Engineering Materials & Structures, 1999
The objective of this paper is to determine the very long fatigue life of ferrous alloys up to 1 × 1010 cycles at an ultrasonic frequency of 20 kHz. A good agreement is found with the results from conventional tests at a frequency of 25 Hz by Renault between 105 and 107 cycles for a spheroidal graphite cast iron.
null Wang, null Berard, null Dubarre, null Baudry, null Rathery, null Bathias   +5 more
openaire   +2 more sources

Effect of hardened surface layer obtained by frictional treatment on the contact endurance of the AISI 321 stainless steel under contact gigacycle fatigue tests

, 2021
Previous research has shown that the contact endurance (resistance to the fatigue spalling) of the corrosion resistant AISI 321 steel is insufficient under cyclic impact loading.
R. Savrai, A. Osintseva
semanticscholar   +1 more source

Initiation from Low Cycle Fatigue to Gigacycle Fatigue

Advanced Materials Research, 2014
This paper is devoted to the initiation of fatigue crack in Armco iron from low cycle fatigue to gigacycle fatigue. It is shown that the basic mechanisms of initiation are very similar from a physical point of view: PSB and Grain boundary cracking. But the mechanical aspect is specific in LCF and in GCF.
Bathias, Claude, Wang, Chong
openaire   +2 more sources

Gigacycle Fatigue Behavior by Ultrasonic Nanocrystalline Surface Modification

Journal of Nanoscience and Nanotechnology, 2012
Nanocrystalline surface layer up to 84 microm in thick is produced on a specimen made of Al6061-T6 alloy by means of surface treatment called ultrasonic nanocrystalline surface modification (UNSM) technique. The refined grain size is produced in the top-layer and it is increased with increasing depth from the top surface.
D G, Ahn, A, Amanov, I S, Cho, K S, Shin, Y S, Pyoun, C S, Lee, I G, Park   +6 more
openaire   +2 more sources

Investigation of the influence of consecutive dynamic and gigacycle fatigue loads on the lifetime of titanium alloy VT-8

ВЕСТНИК ПЕРМСКОГО УНИВЕРСИТЕТА ФИЗИКА
The paper investigates the cyclic durability of VT-8 titanium alloy in the gigacycle fatigue mode with preliminary dynamic deformation. This has important applications – the assessment of the resource of materials and structural elements of aircraft gas ...
V. Oborin, M. Bannikov, M. Sokovikov, Oleg B. Naimark   +3 more
semanticscholar   +1 more source

The Influence of Laser Shock Peening on the Behavior of Ti6Al4V Titanium Alloy Under Gigacycle Fatigue Conditions

Fatigue & Fracture of Engineering Materials & Structures
This study investigates the gigacycle fatigue behavior of Ti6Al4V titanium alloy—a critical aerospace material—following laser shock peening (LSP). Previous research conducted by the authors has shown that LSP can improve the fatigue life of samples ...
R. Sabirov, A. Vshivkov, I. Kudryashev, D. Shaysultanov, S. Zherebtsov, O. Plekhov   +5 more
semanticscholar   +1 more source