Results 31 to 40 of about 3,706 (215)

Wireless, non-invasive, high-resolution thrill sensor for continuous vascular access monitoring of hemodialysis patients

Nature Communications
Hemodialysis is the primary life-sustaining therapy for patients with end-stage renal disease (ESRD). Diagnosing and monitoring the health condition of vascular access (VA) for hemodialysis involves the use of ultrasonic imaging and angiography.
Yicong Wang, Jie Wang, Yuqi Tian, Zhiheng Xu, Mengyao Liu, Lin Zhou, Renhua Lv, Yujun Deng, Jinyun Tan, Linfa Peng, Zhongqin Lin   +10 more
doaj   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

Advanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios, Anthony Gonzalez, Aleksander Aleman, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal   +5 more
wiley   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

On the theory and practice of thin-walled structures [PDF]

Georgian Mathematical Journal, 2021
Abstract The basic problem of satisfaction of boundary conditions is considered when the generalized stress vector is given on the surfaces of elastic plates and shells. This problem has so far remained open for both refined theories in a wide sense and hierarchic type models. In the linear case, it was formulated by I. N.
openaire   +3 more sources

Combined Process‐ and Phase‐Field‐Simulation to Predict the Microstructure of Single‐Crystal Ni‐Based Superalloys

Advanced Engineering Materials, EarlyView.
A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm, André B. Baldissera, Rainer Völkl, Uwe Glatzel   +3 more
wiley   +1 more source

Influence of die morphology on microstructure and mechanical performance of friction forge riveted aluminum alloy sheets

Materials & Design
To address the issues of excessive riveting force, high noise and insufficient strength of aluminum alloy interference fit riveting, this study applies the friction forge riveting (FFR) process to join AA2A12-T4 sheets using AA7075-T651 rivets ...
Weilun Zheng, Zixuan Chen, Xuerui Wang, Bowen Zhang, Hailang Wan, Peng Li, Xiaojie Wang, Yunwu Ma, Yongbing Li, Zhongqin Lin   +9 more
doaj   +1 more source

Creating Ti–Fe α/β Alloys by Diffusion‐Driven Solid‐State Processing

Advanced Engineering Materials, EarlyView.
This study proposes making alloys containing fast diffusing elements that are difficult to produce by ingot metallurgy, by diffusion‐driven solid‐state HIP processing of elemental powders and low‐temperature homogenisation. Here, novel Fe‐Ti α–β alloys are formed having fine α–β lamellae, a small β prior grain size without significant intermetallics ...
Jiaqi Xu, Xun Zhang, Jack M. Donoghue, Albert D. Smith, Rahul Unnikrishnan, Rhys Thomas, Vahid Nekouie, Jie Luo, Dongchen Hu, Michael Preuss, Philip J. Withers   +10 more
wiley   +1 more source

Self-adaptive epidermal blood flow sensor for high-flux vascular access monitoring of hemodialysis patients

npj Flexible Electronics
Well-functioning vascular access (VA) is essential for hemodialysis treatment in patients with end-stage renal disease (ESRD). However, continuous and accurate monitoring of blood flow to assess high-flux VA during hospitalization or at home is not ...
Yuqi Tian, Kai Yang, Yicong Wang, Jie Wang, Andrea S. Carlini, Zhinan Zhang, Yujun Deng, Jinyun Tan, Linfa Peng, Bo Yu, Zhongqin Lin   +10 more
doaj   +1 more source

Electromechanical Coupling Dynamic and Vibration Control of Robotic Grinding System for Thin-Walled Workpiece

Actuators, 2023
The robotic grinding system for a thin-walled workpiece is a multi-dimensional coupling system composed of a robot, a grinding spindle and the thin-walled workpiece.
Yufei Liu, Dong Tang, Jinyong Ju
doaj   +1 more source