Results 61 to 70 of about 94,140 (312)

Performance Analysis of Abradable Coating Systems for Aircraft Gas Turbines

Advanced Engineering Materials, EarlyView.
Three CoNiCrAlY/YSZ/MgAl2O4 abradable liner configurations on a nickel‐superalloy are evaluated by thermal‐gradient cycling and incursion tests. Laser ablation of the bondcoat and/or Y2O3‐stabilized ZrO2 (YSZ) intermediate layer increases mechanical interlocking and bonding for thick topcoats.
Hanna Heyl, Daniel Emil Mack, Martin Tandler, Susanne Schrüfer, Robert Vaßen   +4 more
wiley   +1 more source

Solid‐State Diffusion and Intermetallic Phase Formation in Roll‐Bonded Mg–Zn Composites With Kirigami‐Patterned Inlay

Advanced Engineering Materials, EarlyView.
Mg–Zn composites with a thickness of 0.21 mm were fabricated using roll bonding of a kirigami‐patterned Mg alloy inlay within a Zn matrix. Thermal activation following this process led to the formation of tailored intermetallic structures, which provided the composite with enhanced flexural strength.
Yaroslav Frolov, Oleksandr Bobukh, Christian Klose, Florian Nürnberger, Hans Jürgen Maier   +4 more
wiley   +1 more source

Development of Online Technique for International Validation of the AO Spine Subaxial Injury Classification System

Global Spine Journal
Study Design Global cross-sectional survey Objective To develop and refine the techniques for web-based international validation of fracture classification systems.
Mark J. Lambrechts MD, Gregory D. Schroeder MD, Brian A. Karamian MD, Jose A. Canseco MD, PhD, Cumhur Oner MD, Emiliano Vialle MD, Shanmuganathan Rajasekaran PhD, Olesja Hazenbiller MS, Marcel R. Dvorak MD, Lorin M. Benneker MD, Frank Kandziora MD, Klaus Schnake MD, Christopher K. Kepler MD, Alexander R. Vaccaro MD, MBA, PhD,   +14 more
doaj   +1 more source

Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading

Advanced Engineering Materials, EarlyView.
The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley   +1 more source

Nanosecond ablation of alumina with an ytterbium fibre-laser: experimental study, topography and damage evaluation [PDF]

, 2014
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Programa de Pós-Graduação em Ciência e Engenharia de Materiais, Florianópolis, 2014.Abstract : The use of advanced ceramics has been limited by the high machining costs, with grinding and ...
Gomes, Diego Ribas
core  

Crack morphology models for fracture toughness and fatigue strength analysis

, 2019
Planar cracks represent an approximation, largely adopted in fracture mechanics and fatigue problems, of the physical reality, where cracks feature complex geometric morphologies related to material microstructure, residual stresses, material properties ...
Andrea Spagnoli, Spagnoli A., Andrea Carpinteri, Terzano M., Michele Terzano, Carpinteri A.   +5 more
core   +1 more source

Study on the influence of horizontal stress difference coefficient on hydraulic fracturing fracture

Meikuang Anquan
In order to analyze the effect of horizontal stress difference coefficient on hydraulic fracturing fracture formation, PFC2D software was used to simulate hydraulic fracturing.
Zengbao ZHANG, Xianbo MENG, Gun HUANG, Xiaoming ZHU, Yong WANG, YU LU, Yiping YUAN, Jiansheng FENG   +7 more
doaj   +1 more source

MORPHOLOGICAL OBSERVATIONS OF FRACTURE OF POLYSTYRENES

Sen'i Gakkaishi, 1973
General mode of deformation and the morphology of fracture surface in polymers have been studied systematically from the point of view of fluidity of molecular chains.Particularly for polystyrene, the mechanism of the propagation of fracture has been investigated in the light of morphology observed by the scanning type electron microscope.Materials may
Nakano, Nobuhiko, Kishino, Masanobu
openaire   +2 more sources

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Effect of laser power on microstructure and properties of Fe–Mn–Al–Ni–C lightweight steels prepared by laser powder bed fusion

Fenmo yejin jishu
The composition of Fe–30Mn–11Al–12Ni–1C lightweight alloy steels was designed and the effect of laser power on the microstructure and properties of the lightweight steels formed by laser powder bed fusion (LPBF) was studied in this paper.
GU Xiangyu, LIN Yuan, QU Xinglin, GUO Yuxi, ZHANG Li, LI Xiaofeng   +5 more
doaj   +1 more source