Results 141 to 150 of about 16,314 (309)

A Piezo‐Mimetic Ionic Hydrogel Harnessing Joint Motion for Cartilage Repair

open access: yesAdvanced Science, EarlyView.
A piezo‐mimetic ionic hydrogel converts mechanical deformation into bioactive ionic currents via stress‐induced asymmetric ion migration. Coupled with sustained Mg2+ release, this mechano‐electrochemical platform bridges mechanical loading and cellular signaling, enabling load‐adaptive stimulation and enhanced cartilage regeneration. ABSTRACT Articular
Chenyuan Gao   +14 more
wiley   +1 more source

Cracking and tension field action in composite beams [PDF]

open access: yes
Two aspects of the behaviour of uncased composite 'T' beams of steel and concrete are considered. Flexural cracking in the reinforced concrete slab was studied by subjecting seven 350-mm deep composite beams to hogging bending moment.
Allison, Robert William
core  

Properties of Normal and High-Strength self-Compacting Fibrous Concrete in Fresh and Hardened state

open access: yesJournal of Engineering and Sustainable Development, 2014
This paper studies the properties of normal and high strength self-compacting concrete in the fresh and hardened states, six self-compacting with normal and high strength concrete mixes were prepared with different percentages of fibers(0, 0.4%, and 0.
Mohammed Mosleh Salman   +2 more
doaj  

Hierarchical Ordering Induced Ultrahigh Cryogenic Strength and Strain Hardening in a Ni2CoFeV Medium‐Entropy Alloy

open access: yesAdvanced Science, EarlyView.
A tri‐phase Ni2CoFeV medium‐entropy alloy with fcc, κ, and L12 phases achieves exceptional cryogenic strength‐ductility synergy at 77 K. It delivers a yield strength of 1.4 GPa, an ultimate tensile strength of 2.07 GPa and a tensile ductility of 28%.
Lei Gu   +4 more
wiley   +1 more source

Elastic-Plastic Analysis of Rolling Contact for Surface Hardened Steel [PDF]

open access: yes
This paper presents the study of the effect of surface hardening treatment on the wear characteristics of the hardened steel for rolling contact problem.
橋本, 宗到   +6 more
core  

Structurally Complex Precipitates Enhance Strength‐Ductility Synergy in a Duplex Medium Entropy Alloy

open access: yesAdvanced Science, EarlyView.
Strong‐yet‐ductile precipitation‐hardening alloys require novel microstructural complexity of precipitates in particularly at cryogenic condition, to constantly impart strain hardening of hard‐and‐brittle precipitates. The present work creates innovative structurally complex precipitates assembled with dispersed nanocores and a chemical‐heterogeneity ...
Shaohua Gao   +9 more
wiley   +1 more source

Hierarchical Twin Networks Enable Exceptional Strength and Fracture Toughness in Titanium

open access: yesAdvanced Science, EarlyView.
A commercial‐purity titanium with hierarchical ultrafine twin structures delivers an exceptional combination of fracture toughness (KJIc) of 187 MPa·m1/2 and specific yield strength of 140 MPa·cm3·g−1, in which pre‐engineered high‐density twin boundaries stimulate massive and dislocations to blunt crack tip.
Xiao‐Wei Zou  
+3 more
wiley   +1 more source

A Millimeter‐Scale Implantable Magneto–Mechano–Electric Transducer Based on BTO Piezoelectric Ceramics for Remote Wireless Electrical Stimulation of Injured Sciatic Nerves

open access: yesAdvanced Science, EarlyView.
We report a fully wireless, circuit‐free neural stimulator built on a millimetric magneto‐mechano‐electric (MME) cantilever transducer (3 × 10 × 5 mm) with a barium titanate (BTO) piezoelectric ceramic core. Under low‐frequency alternating magnetic fields, the MME cantilever mechanically oscillates, inducing stress on the BTO element and thereby ...
Yijing Wang   +7 more
wiley   +1 more source

THE ASSESSMENT OF THE DEGREE OF SOFTENING DURING THE HARDENED STEEL WHEELS TEMPERING

open access: yesNauka ta progres transportu, 2010
The issues re. estimation of changes in hardness and sound vibration propagation velocity after tempering the hardened railway wheel steel are considered.
L. I. Vakulenko, Yu. L. Nadezhdin
doaj  

Home - About - Disclaimer - Privacy