scispace - formally typeset
Search or ask a question
Topic

Peening

About: Peening is a research topic. Over the lifetime, 5538 publications have been published within this topic receiving 73073 citations.


Papers
More filters
Journal ArticleDOI
TL;DR: In this article, a high energy pulse laser peening (HEPLP) process is proposed to both improve the mechanical strength and introduce a micropattern into the biomedical implant material of a commercially pure Titanium (cpTi).
Abstract: Pure titanium is an ideal material for biomedical implant applications for its superior biocompatibility, but it lacks of the mechanical strength required in these applications compared with titanium alloys. This research is concerned with an innovative laser peening-based material process to improve the mechanical strength and cell attachment property of pure titanium in biomedical applications. Evidence has shown that engineered surface with unsmooth topologies will contribute to the osteoblast differentiation in human mesenchymal pre-osteoblastic cells, which is helpful to avoid long-term peri-abutment inflammation issues for the dental implant therapy with transcutaneous devices. However, surface quality is difficult to control or mechanical strength is not enhanced using conventional approaches. In this paper, a novel high energy pulse laser peening (HEPLP) process is proposed to both improve the mechanical strength and introduce a micropattern into the biomedical implant material of a commercially pure Titanium (cpTi). The strong shock wave generated by HEPLP presses a stainless steel grid, used as a stamp, on cpTi foils to imprint a micropattern. To understand the basic science during the process, the HEPLP induced shock wave pressure profile and history are modeled by a multiphysics hydrodynamic numerical analysis. The micropatterns and strength enhancement are then simulated using a dislocation density-based finite element (FE) framework. Finally, cell culture tests are conducted to investigate the biomedical performance of the patterned surface.

28 citations

Journal ArticleDOI
TL;DR: In this article, a simulation procedure based on the concept of eigenstrains was used for shot peen forming and stress-peen forming of aluminum alloy panels, which revealed a transition from spherical to cylindrical shapes as the panel thickness is decreased for a given treatment.

28 citations

Journal ArticleDOI
TL;DR: In this article, the microstructure and hardness on and below the surface of Cr-Mo steel (SCM435) treated by water jet peening (WJP) were investigated using scanning electron microscopy and micro Vickers hardness measurements.
Abstract: The microstructure and hardness on and below the surface of Cr-Mo steel (SCM435) treated by water jet peening (WJP) were investigated using scanning electron microscopy and micro Vickers hardness measurements. The change of the surface residual stress caused by the WJP treatment influenced the surface microstructure and surface hardness of the SCM435 steel. Cementite in the pearlite phase tended to protrude as the duration of WJP was increased. Voids were formed in the area 0.5 - 1.0 mm below the surface and also at grain boundaries between ferrite and pearlite grains, whereas no voids were formed in the depth range from 2.0 to 3.0 mm below the surface.

28 citations

Journal ArticleDOI
TL;DR: In this article, the interlocked nanolaminated architecture of graphene-reinforced aluminum alloy nanocomposite achieved via multi-step powder metallurgy route and industrial extrusion process followed by laser shock peening.
Abstract: The combination of interlocked lamellae grains is the primary feature of biological material “nacre” to constitute its highest strength. The mimic of this hierarchical assembly of biological material combinations remains the challenge for the future trending bioinspired engineering materials. In this study, the interlocked nanolaminated architecture of graphene-reinforced aluminum alloy nanocomposite achieved via multi-step powder metallurgy route and industrial extrusion process followed by laser shock peening. Interrupted re-nucleation to obtain lamellae grains, controlled laminates sliding through interlock mechanism and inhibited large dislocation loop formation in the nanocomposites during laser shock peening was significantly influenced the mechanical properties of the nanocomposites. Consequently, enhancement in the hardness, tensile strength, wettability characteristic properties and prolonged fatigue life cycles were achieved significantly for nanocomposites.

28 citations

Patent
16 Feb 2001
TL;DR: In this paper, a mask for masking a corner of a metal component during peening is proposed, which includes a plug sized and shaped for insertion in the opening adjacent to the corner to cover the corner during the peening.
Abstract: A mask for masking a corner of a metal component during peening. The component has a first surface defining an opening in the component and a second surface intersecting the first surface of the component at the corner. The mask includes a plug sized and shaped for insertion in the opening adjacent to the corner to cover the corner during peening. Further, the mask includes a rim surrounding at least a portion of the plug sized and shaped for surrounding at least a portion of the opening to cover the corner during peening thereby preventing the corner from being peened.

28 citations


Network Information
Related Topics (5)
Alloy
171.8K papers, 1.7M citations
88% related
Microstructure
148.6K papers, 2.2M citations
87% related
Fracture mechanics
58.3K papers, 1.3M citations
84% related
Ultimate tensile strength
129.2K papers, 2.1M citations
83% related
Grain boundary
70.1K papers, 1.5M citations
81% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023256
2022500
2021282
2020303
2019340
2018305