Results 51 to 60 of about 148,804 (260)

Variable Stiffness Flexure Structures Enabled by Phase‐Change Gallium and Adhesive Interfacial Locking for Soft Robotic Applications

Advanced Engineering Materials, EarlyView.
A flexure‐based variable stiffness structure is developed by integrating phase‐change modulation and adhesive interfacial locking of gallium. The design enables a wide stiffness variability, transitioning from soft, flexible behavior to rigid, load‐supporting performance.
Sungjin Kim, Sohee John Yoon, Yong‐Lae Park   +2 more
wiley   +1 more source

Effect of Nb on the Microstructure and High-Cycle Fatigue Properties of the Coarse-Grained Heat-Affected Zone in Low-Carbon Microalloyed Steel

Metals
A comprehensive investigation was conducted into the microstructural evolution, high-cycle fatigue properties, and corresponding fatigue fracture mechanism of the simulated coarse-grained heat-affected zone (CGHAZ) in low-carbon microalloyed steel with ...
Guodong Zhang, Jiangli He, Liyuan Zhu, Yisen Kong, Qingfeng Wang, Zhongzhu Liu   +5 more
doaj   +1 more source

Microstructural Study of IF-WS2 Failure Modes

Inorganics, 2014
This manuscript summarizes the failure mechanisms found in inorganic fullerene-type tungsten disulfide (IF-WS2) nanoparticles treated with diverse pressure loading methods. The approaches utilized to induce failure included: the use of an ultrasonic horn,
Jamie Cook, Steven Rhyans, Lou Roncase, Garth Hobson, Claudia C. Luhrs   +4 more
doaj   +1 more source

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

Advanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar, Dhanadeep Dutta, G. Bharat Reddy   +2 more
wiley   +1 more source

Mechanical properties and microstructure of 2.5D (shallow bend-joint) quartzf/silica composites by silicasol-infiltration-sintering

Science and Engineering of Composite Materials, 2012
Silica composites (2.5D quartz fibers-reinforced) were prepared by the silicasol-infiltration-sintering method. The fiber volume fraction was 50.5%. The composites were sintered in a temperature range of 400∼450°C. Mechanical properties of the composites
Liu Yong, Zhu Jianxun, Chen Zhaofeng, Jiang Yun, Li Binbin, Chen Zhaohai, Lin Long, Guan Tianru, Li Chengdong   +8 more
doaj   +1 more source

Fatigue behavior in A6061/AZ31 dissimilar friction stir spot weld made by a scroll grooved tool

Nihon Kikai Gakkai ronbunshu, 2014
Aluminum and magnesium alloys dissimilar friction stir spot welds had been fabricated using a tool without probe whose shoulder surface had a scroll groove with the depth of 0.5mm.
Yoshihiko UEMATSU, Toshifumi KAKIUCHI, Yasunari TOZAKI, Takeshi ASAJI   +3 more
doaj   +1 more source

A Numerical–Experimental Approach for Multi‐Matrix Fiber‐Reinforced Plastics Characterization Using Finite Element Model Updating

Advanced Engineering Materials, EarlyView.
A numerical–experimental framework is developed for characterizing multi‐matrix fiber‐reinforced polymers (MM‐FRPs) combining epoxy and polyurethane matrices. Harmonic bending tests are integrated with finite element model updating (FEMU) to simultaneously identify elastic and viscoelastic material parameters.
Rodrigo M. Dartora, Tales V. Lisbôa, Axel Spickenheuer, Rogério J. Marczak, Jakson M. Vassoler   +4 more
wiley   +1 more source

Overtopping-Induced Breach Mechanisms of the Asphalt Concrete Core Dam

Engineered Science
This study conducts flume model tests on the overtopping failure of asphalt concrete core dams (ACCDs), considering varying asphalt contents of core walls, environmental temperatures, dam heights to explore breach mechanisms for the first time.
Meng Yang, Qiming Zhong, Liang Hu, Lucheng Zhang, Rafael Morán, Ignacio González, Miguel Á. Toledo   +6 more
doaj   +1 more source

Enhancing Strength and Electrical Conductivity in Al–Zr–Sc Conductor Alloys Through Sn and Sr Microalloying and Two‐Step Aging Treatment

Advanced Engineering Materials, EarlyView.
Trace additions of Sn and Sr combined with a two‐step aging treatment are shown to enhance the microstructure and performance of Al–Zr–Sc conductor alloys. Strength and electrical conductivity increase concurrently through accelerated precipitation of fine Al3(Sc, Zr) precipitates and improved dislocation resistance, offering a cost‐effective pathway ...
Quan Shao, Emad M. Elgallad, Alexandre Maltais, X.‐Grant Chen   +3 more
wiley   +1 more source

Fractal characteristics and fracture mechanisms of flying gangue in longwall workings of the steeply dipping seam

Meitan kexue jishu
The flying-gangue hazard has long threatened the safety of personnel and mining equipment in steeply dipping/inclined coal seams. A flying gangue maybe produces a large number of “subgangues” after impacting on the longwall floor, it’s damage is sharply ...
Bosheng HU, Yongping WU, Hu WEN, Panshi XIE, Hongwei WANG   +4 more
doaj   +1 more source