Results 91 to 100 of about 1,275,740 (271)

Effect of Micro Pits on Workpiece Surface on Friction Behavior in Metal Forming.

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C, 1999
The purpose of this paper is to clarify the mechanism and lubricating effects of the outflow behavior of lubricant trapped in pits. The pits regularly arranged on a workpiece surface were produced by coining a die surface topograghy. The effects of pit size, array and area ratio of pits on the friction behavior were investigated by using a roiling type
WANG, Zhrgang, DOHDA, Kuniaki, HARUYAMA, Yoshio, YOKOI, Nobuyasu   +3 more
openaire   +2 more sources

In Situ X‐Ray Tomography and Acoustic Emission Monitoring of Damage Evolution in C/C‐SiC Composites Fabricated by Liquid Silicon Infiltration

Advanced Science, EarlyView.
This study investigates how the internal structure of fiber‐reinforced ceramic composites affects their resistance to damage. By combining 3D X‐ray imaging with acoustic emission monitoring during mechanical testing, it reveals how silicon distribution influences crack formation.
Yang Chen, Renato S. M. Almeida, Stefan Flauder, Guillaume Couégnat, Kamen Tushtev, Jürgen Horvath, Peter Wriggers, Kurosch Rezwan   +7 more
wiley   +1 more source

INVESTIGATION OF MICRO-PITS FORMATION ON BILLET SURFACES IN PLANE STRAIN EXTRUSION

Jurnal Teknologi, 2016
Extrusion is a process of pushing a material through a die to yield a desired cross-section product. The application of surface texture has become well known for enhancing tribological performance. In this research, the effect of micro-pits embedded on a work piece lubricated with vegetable oil using plain strain extrusion were studied and compared ...
Izhan, I. M., Syahrullail, S., Yong, S. Y., Nurul, M. A.   +3 more
openaire   +1 more source

Flexoelectricity in Photoconversion: Fundamentals, Materials, and Outlooks

Advanced Science, EarlyView.
Mechanical bending of a flexible cantilever induces a strain gradient in the photoactive material. The resulting flexoelectric field couples with photovoltaic and photoconductive effects, modulating charge generation, separation, and collection. A comparative analysis of oxide perovskites, halide perovskites, and two‐dimensional materials is presented,
Xiang Huang, Feng Li, Rongkun Zheng
wiley   +1 more source

Effect of residual stress on localized corrosion behavior of metallic materials

工程科学学报, 2019
It has been generally recognized that the synergistic action of aggressive media and residual stress that arises during metals fabrication, processing, and service can affect the behavior of corrosion electrochemistry.
CHEN Heng, LU Lin
doaj   +1 more source

Nanoscale Optical Inhomogeneities From Compositional Segregation Within Individual GaN‐on‐Si Quantum Wells

Advanced Science, EarlyView.
This work visualizes local variations in luminescence and relates them to nanoscale chemical inhomogeneities in single InxGa1−xN quantum wells. We demonstrate that the elemental segregation is only inherent to quantum wells with high indium content. Density functional theory shows this to be the result of strain‐induced phase stabilization, explaining ...
Jing‐Yang Chung, Tara P. Mishra, Zackaria Mahfoud, Thomas E. Gage, Jianguo Wen, Katherine P. Rice, Isabelle Martin, Li Zhang, Govindo J. Syaranamual, Stephen J. Pennycook, Silvija Gradečak, Pieremanuele Canepa, Michel Bosman   +12 more
wiley   +1 more source

Simulation of Micro–EDM Servomotor for Machining Micro Pits on Hip Implant

Jurnal Teknologi, 2013
Metal–on–metal articulation of hip implant suffers from friction due to the moving metal surface. Thus it would shorten the lifespan of the joint. One of the significant current discussions in biomedical field is to reduce the friction between the articulations surface.
Nor Liyana Safura Hashim, Azli Yahya, Mohammed Rafiq Abdul Kadir, Syahrullail Samion, Nazriah Mahmud   +4 more
openaire   +1 more source

Bioengineered Exosome‐Loaded Immunomodulatory Bioadhesive Spray Reverses Liver Fibrosis and Metabolic Dysfunction That Triggers Beneficial Gut‐Liver Crosstalk in Chronic Fatty Liver Disease

Advanced Science, EarlyView.
Umbilical cord stem cell‐derived exosomes encapsulated in an immunomodulatory bioadhesive hydrogel spray enable localized therapy, sustained vesicle delivery, macrophage polarization, suppress systemic inflammation, and mitigate glucose and insulin homeostasis impairments in MAFLD.
Triya Saha, Ayushi Mairal, Shreya Mehrotra, Shiv K. Sarin, Ashok Kumar   +4 more
wiley   +1 more source

The trade-off between wear and corrosion performance in WC/W2C reinforced laser powder bed fusion duplex stainless steel composites

Materials & Design
The broader application of laser powder bed fusion (LPBF) processed 2205 duplex stainless steel (DSS) is often limited by its wear resistance and pitting corrosion performance. To address this, two types of WC/W2C reinforcing particles—small irregular (1–
Yiqi Zhou, Ke Sang, Peihu Yuan, Lili Li, Yu Yan, Zhigang Yang, Chi Zhang   +6 more
doaj   +1 more source

Remarks on the evolution and performance of the different austenite morphologies at the simulated HAZs of a 2205 duplex stainless steel

Journal of Materials Research and Technology, 2019
Some features of the austenite micro structural evolution have been reviewed at the simulated HAZs (Heat Affected Zones) in a duplex stainless steel. The evolution of the different morphological forms of austenite was quantified in the microstructures ...
E.V. Morales, J.A. Pozo, L. Olaya, E. Kassab, J.A.C. Ponciano, K. Ghavami, I.S. Bott   +6 more
doaj   +1 more source