The effects of shot-peen forming on the fatigue properties aluminum alloy samples were measured with a mechanical testing & simulation (MTS) tester in atmospheric and salt-spray environments. After forming, performance sheet was significantly improved both salt spray environment. Compared detail rating (DFR) value environment, DFR original decreased to 110.82 MPa, decreasing by 4.47%. shot-...

Shot peening is a process in which a stream of shot is blasted against an engineering component to generate a high compressive residual stress regime at the surface of the component. This paper describes a 3D finite element dynamic analysis of single shot impacting on a metallic component. The model is first validated against a published numerical study. A parametric study is conducted to inves...

High-speed waterjet peening technology has attracted a lot of interest and is now being widely studied due to its great ability to strengthen metal surfaces. In order to further improve the mechanical properties of metals, self-excited oscillation pulsed waterjets (SOPWs) were used for surface peening with an experimental investigation focused on the surface topography and properties. By imping...

In shot peening process the work piece surface is struck by a large number of balls and compressive residual stress is generated on the surface. So, mechanical properties such as fatigue strength, stress corrosion resistance, smooth shape and ... will improve. In this paper, the balls with a speed of 100 to 200 m/s were struck on the steel samples and fatigue strength compared with specimens wi...

A novel surface texturing technique is introduced based on the bombardment using custom shots originally known as shot peening process describe in article number 2201730 by Sara Bagherifard and co-worker. Different textures are achievable through having distinct superficial designs upon full coverage peening. The concept proved simulations experiments.

Fatigue fracture is the major threat to railway axle, which can be avoided or delayed by surface strengthening. In this study, a low-carbon alloy axle steel with two states was treated induction hardening and shot peening, respectively, reveal mechanism of fatigue property improvement microstructure characterization, microhardness measurement, residual stress analysis, roughness rotary bending ...

Ultrasonic shot peening (USP) studied. Several parameters (arc heights, surface roughness topography and micro hardness) with different parameters were measured. The research proposes curvature of shot peened sheet increases with time decreasing, while increases with pin diameter increasing, and curvature reaches a saturation level after a specific electric current. An empirical model of the re...

The effect of ultrasonic shot peening on the environmental hydrogen embrittlement behavior 7075-T6 aluminum alloy is investigated. tensile specimens were treated by for 50 s. Surface residual stress and depth under surface evaluated using an X-ray diffractometer. Then, tested in humid air dry nitrogen gas slow strain rate technique. results showed that shot-peened specimen has a superior resist...

Shot peening is a surface-strengthening process that widely used in various industries, such as aerospace, automotive, and biomedical engineering. The involves the impact of small, spherical media, called shots, onto surface material, resulting residual compressive stress improved properties. This review aims to provide an overview state art perspectives on strengthening by shot peening. covers...

The surface fibers of the material are yielded in tension by the impact of shots in shot peening process. Below the surface fiber an even thin skin surface layer of material is deformed and this layer is highly stressed in compression. It results in the improvement of surface and mechanical properties of the material. Regression analysis is the statistical modeling technique, and it is suitable...