Results 81 to 90 of about 2,794 (222)

Shock-wave induced compressive stress on alumina ceramics by laser peening [PDF]

, 2019
Laser shock peening (LSP) of Al2O3 advanced ceramics is reported, showing underpinned physical mechanisms and potential benefits. It is known that localised plastic deformation can be induced in ceramics in the presence of a high hydrostatic pressure. It
Acharya, Bhattacharya, Bradt, Chen, Chu, Dancer, Fang, Gujba, Heuer, Koichi, Longy, Louro, Ma, Martínez-Cázares, Peyre, Pfeiffer, Pfeiffer, Qing, Schnick, Shukla, Shukla, Shukla, Shukla, Shukla, Shukla, Shukla, Timoshenko, Wade, Wang, Wang, Wang, Wang, Wu, Wu, Wu, Wu, Wu, Zhang   +37 more
core   +2 more sources

Effect of Surface Mechanical Attrition Treatment on Surface Topography and Dry Sliding Wear Performance of AA7075‐T6

Advanced Engineering Materials, Volume 26, Issue 21, November 2024.
Surface roughness affects material life, especially fatigue and wear. This study examines surface mechanical attrition treatment (SMAT) on AA7075‐T6 aluminum alloy, using low‐speed vibration, varied shot amounts, and sizes. SMAT produces smoother surfaces, lowers friction, and improves wear performance, enhancing tribological properties and engineering
Eser Yarar, Alpay Tamer Erturk, Sedat Karabay   +2 more
wiley   +1 more source

High Spatial Resolution Evaluation of Residual Stresses in Shot Peened Specimens Containing Sharp and Blunt Notches by Micro-hole Drilling, Micro-slot Cutting and Micro-X-ray Diffraction Methods [PDF]

, 2016
The moderately high lateral RS gradients (on the order of tens of MPa/μm) near shot peened notches in conjunction with the shallow treatment depth (some hundreds of microns) limit the application of far-field and/or high resolution synchrotron ...
B. Winiarski, J. C. Hanan, M. Allahkarami, M. Benedetti, P. J. Withers, V. Fontanari   +5 more
core   +1 more source

Understanding the Effects of Manufacturing Attributes on Damage Tolerance of Additively Manufactured Parts and Exploring Synergy Among Process‐Structure‐Properties. A Comprehensive Review

Engineering Reports, Volume 6, Issue 11, November 2024.
ABSTRACT Additive Manufacturing (AM) has revolutionized the production industry by offering design freedom with shorter lead times and reduced material wastage. However, the damage tolerance (DT) of AM parts is a significant concern due to their microstructural and geometric complexities, which affect their mechanical performance.
Zia Uddin, Muhammad Muteeb Butt, Varma Kvvssn, Metin U. Salamci, Hüseyin Kizil   +4 more
wiley   +1 more source

Mechanical field assisted additive manufacturing of ultrahigh strength aluminum alloy

International Journal of Extreme Manufacturing
Additive manufacturing of aluminum (Al) alloys has attracted significant attention in the aerospace industry. However, achieving ultrahigh-strength (>500 MPa) Al alloys remains challenging due to their intrinsic poor printability. Here, we report a novel
Wenjie Liu, Shengnan Shen, Jinlong Meng, Jiafeng Xiao, Hui Li, Hejun Du, Qianxing Yin, Chaolin Tan   +7 more
doaj   +1 more source

Effect of Ultrasonic Surface Rolling Step Size on the Wear and Corrosion Behavior of Shot-Peened Cr8 Steel

Metals
Cr8 steel should be Steel containing ~8 wt.% of chromium is widely used in demanding die applications due to its excellent wear resistance; however, conventional shot peening, while enhancing strength, inevitably increases surface roughness, thereby ...
Chen Liang, Huan Yan, Yujing Yin, Honglei Hu, Lei Li   +4 more
doaj   +1 more source

On the notch sensitivity of as‐built Laser Beam Powder Bed–Fused AlSi10Mg specimens subjected to Very High Cycle Fatigue tests at ultrasonic frequency up to 109 cycles

Fatigue &Fracture of Engineering Materials &Structures, Volume 47, Issue 11, Page 4356-4371, November 2024.
Abstract The notch effect significantly influences the fatigue response of components and is particularly relevant for parts produced with additive manufacturing (AM) processes, characterized by complex geometries and possible geometric discontinuities inducing local and critical peak stresses.
Andrea Tridello, Carlo Boursier Niutta, Alessandro Benelli, Ana Paula Pagnoncelli, Massimo Rossetto, Filippo Berto, Davide Salvatore Paolino   +6 more
wiley   +1 more source

Impact of a single‐side 100Cr6 clad layer on the tensile and fatigue properties of S550MC steel

Fatigue &Fracture of Engineering Materials &Structures, Volume 47, Issue 10, Page 3707-3722, October 2024.
Abstract The production of newly developed hot‐rolled layered metal composites (LMC) leads to the availability of sheet materials with specifically adjustable, graded properties being cost‐effective and suitable for large‐scale production. As many of the envisaged applications of these LMC, e.g., clutch disc carriers, suffer from cyclic loading during ...
M. Krochmal, T. Wegener, T. Niendorf
wiley   +1 more source

Ball-burnishing effect on deep residual stress on AISI 1038 and AA2017-T4 [PDF]

, 2017
Ball-burnishing induces compressive residual stresses on treated materials by the effect of plastic deformation. The result is an increase in the fatigue life of the treated part, retarding the initiation of cracks on the surface.
García Granada, Andrés Amador, Gómez Gras, Giovanni, Jerez Mesa, Ramón, Reyes Pozo, Guillermo, Travieso Rodriguez, Jose Antonio   +4 more
core   +2 more sources

Index to NASA Tech Briefs, January - June 1967 [PDF]

, 1967
Technological innovations for January-June 1967, abstracts and subject ...

core   +1 more source