Now showing items 31-40 of 74
Estudo do efeito do processo de shot peening na taxa de propagação de trinca por fadiga na liga aeronáutica 2024 - T3
(Universidade Estadual Paulista (UNESP), 2015-01-20)
This work focuses to evaluate the effect of the shot peening process in the propagation rate of a fatigue crack already existing. The shot peening is a cold working process, which consists of repetitive blasting with steel ...
Residual stress influence on fatigue lifetimes of electroplated AISI 4340 high strength steel
(Blackwell Publishing, 2007-11-01)
Residual stresses play an important role in the fatigue lives of structural engineering components. In the case of near surface tensile residual stresses, the initiation and propagation phases of fatigue process are ...
Fatigue in AISI 4340 steel thermal spray coating by HVOF for aeronautic application
(Elsevier B.V., 2010-01-01)
Currently, high-strength materials, particularly AISI 4340 steel, are used in several landing gear components. Due to the high resistance to wear and corrosion required, the components are usually coating by hard chromium. ...
EVALUATION OF HVOF SPRAYED WC-13Co-4Cr AND HARD CHROMIUM ELECTROPLATED ON STAINLESS STEEL 15-5PH FATIGUE STRENGTH
Fatigue failure is the result of a crack initiation and propagation as a consequence of cyclic loading. In the aeronautical industry, for components like landing gear, fatigue strength is an important parameter to be ...
A influência do shot peening e das anodizações crômica, sulfúrica e dura sobre a resistência à fadiga da liga AL7050-T7451 de uso aeronaútico
(Universidade Estadual Paulista (UNESP), 2007-01-19)
As ligas de alumínio desempenham papel fundamental na indústria aeronáutica. A liga Al 7050 é usada em diversas partes da estrutura dos aviões e, em particular, na fabricação de componentes do trem-de-pouso. As condições ...
Surface Microstructure Modification in Square Extruded Al-Nb Powder Composites by Shot Peening
(IOP Publishing, 2014-10)
75%Al-25%Nb powder composites, fabricated by square shape cold extrusion, were subject to shot peening treatment with full coverage. Shot peening results in a high number of intense local deformations, with a surface ...
Coating residual stress effects on fatigue performance of 7050-T7451 aluminum alloy
(Elsevier B.V., 2007-10-15)
The tendency of the aircraft industry is to enhance customer value by improving performance and reducing environmental impact. In view of availability, aluminum alloys have a historically tendency to faster insertion due ...
Effects of surface treatments on the fatigue strength of AISI 4340 aeronautical steel
(Elsevier B.V., 2001-08-01)
Internal residual stresses significantly influence the fatigue strength of coated materials. It is well known that chromium plating is the most used electrodeposited coating for important industrial applications. However, ...
Influence of shot peening on the fatigue strength of Custom 465 stainless steel for aeronautic application
(Trans Tech Publications Ltd, 2014-01-01)
This project was originated from the national aircraft industry requirements to reduce the use of coated materials with electroplated chromium or cadmium that produce waste, which is harmful to health or the environment. ...
FATIGUE IN CUSTOM 465 STAINLESS STEEL FOR AERONAUTIC APPLICATION
(Inegi-inst Engenharia Mecanica E Gestao Industrial, 2015)