Results 81 to 90 of about 682,166 (204)

Fractal Characterization of Permeability Evolution in Fractured Coal Under Mining-Induced Stress Conditions

open access: yesApplied Sciences
Permeability evolution is one of the key parameters influencing the efficient exploitation of deep unconventional energy resources, as it reflects the dynamic development of pore-fracture structures under complex engineering effects.
Yuze Du   +7 more
doaj   +1 more source

Compression strength failure mechanisms in unidirectional composite laminates containing a hole [PDF]

open access: yes
Experiments on graphite-epoxy laminated plates containing unloaded small holes show that these laminates are notch insensitive. That is, the uniaxial strength of these laminates with small holes exceeds the strength predicted by a point stress criterion ...
Johnson, Eric R.
core   +1 more source

Investigating the Effects and Mechanisms of Thermal–Vibration-Coupled Stress Relief Treatment on Residual Stress in SiC/Al Composites

open access: yesMetals
Aluminum matrix composites reinforced with particles (PRAMCs) frequently develop considerable residual stresses post-quenching, which can negatively affect fatigue life and dimensional accuracy.
Bianhong Li, Wu Ouyang, Yushuang Dong
doaj   +1 more source

Stress relief at corner joint and effect of stress relief on fatigue strength.

open access: yesQUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY, 1986
Some series of large-scale fatigue tests have already been conducted on the longitudinal groove weld, which is familiar at the corner welded joint of box sectional members. It was cleared in these tests that the fatigue crack originated from the root blowhole and that the fatigue strength was considerably lower because of the effect of the tensile ...
Shigeo Akashi   +2 more
openaire   +2 more sources

Reconstructions of Ir (110) and (100): an ab initio study

open access: yes, 1996
Prediction criteria for surface reconstructions are discussed, with reference to ab initio calculations of the (110)-$1\times 2$ missing-row and (100)-$5\times 1$ quasi-hexagonal reconstructions of Ir and Rh.Comment: 3 pages RevTeX two-column, to appear ...
Alessio Filippetti   +19 more
core   +1 more source

Early Stages of Fatigue Damage of Steels for Fusion Energetics [PDF]

open access: yes, 2012
Hlavním cílem této práce bylo vysvětlit únavové chování ocelí ODS Eurofer, 14Cr ODS feritické oceli vyráběné v CEA (Commissariat a l’énergie atomique, Saclay, France) a 14Cr ODS feritické oceli vyráběné v EPFL (École Polytechnique Fédérale de Laussane ...
Kuběna, Ivo
core  

The first composite increment: Dependency on placement technique for interaction behavior with maturing dentin-adhesive bond at pulpal floors in deep occlusal cavities – A comprehensive review

open access: yesSaudi Journal of Oral Sciences
Introduction: When the traditional incremental technique is used for direct placement of composite resin in a deep occlusal cavity, each increment (2 mm or thicker) is individually cured where it undergoes hardening and shrinkage.
Khamis A. Hassan, Salwa E. Khier
doaj   +1 more source

The Effect of Heat Treatment and Cold Forging on the Mechanical Properties of SCr420 Low-Alloy Steel

open access: yesMetals
This study developed a new heat treatment method, normalizing and stress relief (NSR), to increase productivity compared to spheroidizing annealing (SA).
Jaehan Lim   +3 more
doaj   +1 more source

Determining stress states using dike swarms: The Lauma Dorsa example [PDF]

open access: yes
Initial examination of the Magellan coverage of Venus has revealed between 150 and 300 large, radially lineated landforms distributed across the planet's surface.
Grosfils, Eric B., Head, James W., III
core   +1 more source

The effect of vibratory stress on the welding microstructure and residual stress distribution [PDF]

open access: yes, 2001
Previous studies have suggested that weld microstructure may be modified by the presence of static stresses. In this investigation, vibratory stress was applied to mild steel specimens while they were being welded to observe its effect on the residual ...
Munsi, A.S.M.Y.   +2 more
core  

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