Results 51 to 60 of about 1,032 (217)

Adaptive 4D‐Printed Vascular Stents With Low‐Temperature‐Activated and Intelligent Deployment

Advanced Functional Materials, EarlyView.
Microarchitected coronary artery stents were fabricated using a polycaprolactone (PCL)‐based shape memory polymer (SMP) composite via projection micro‐stereolithography (PµSL) 4D printing. By incorporating diethyl phthalate (DEP) as a plasticizer, the thermal transition temperature (Ttran) was modulated to about 37°C, enabling rapid and autonomous ...
Yannan Li, Yifan Pan, Chikahiro Imashiro, Chaolun Xu, Jianxian He, Jingao Xu, Kewei Song, Ze Zhang, Chen Gao, Junbo Jiang, Runhuai Yang, Kayo Hirose, Shinjiro Umezu   +12 more
wiley   +1 more source

Improving Rotational Stability of Radial Permanent Magnetic Bearings for Compact Rotors via Axial Offset and Optimal Sizing

IEEE Access
Permanent magnetic bearings (PMBs) provide a passive, contactless alternative to mechanical bearings, yet their inherent instability complicates their adoption in small-scale rotating machinery.
Mante Baekeland, Konstantinos Gryllias, Dirk Vandepitte   +2 more
doaj   +1 more source

Influence of Joint Flexibility on Vibration Analysis of Free-Free Beams

Nonlinear Engineering, 2014
In present work, joint flexibility (or looseness) of the free-free beam is investigated by using a two noded beam finite element formulation with transverse displacement and joint rotations as the degrees of freedom per node at joint location ...
Gunda Jagadish Babu, Krishna Y.
doaj   +1 more source

Geometry‐Dependent Adhesion in Transparent Monodomain Liquid Crystal Elastomers

Advanced Functional Materials, EarlyView.
Liquid Crystal Elastomers (LCEs) are emerging as exciting pressure‐sensitive adhesives. We examine adhesion in chemically identical elastomer films, exploring the influence of geometry (director orientation) and phase (nematic or isotropic). We demonstrate the potential of these aligned films as transparent, tunable, broad‐temperature‐range smart ...
Aidan Street, Devesh Mistry, Johan Mattsson, Helen F. Gleeson   +3 more
wiley   +1 more source

Rotational Stiffness of Rectangular Hollow Sections Composite Joints [PDF]

Journal of Structural Engineering, 2003
Joints in steel rectangular hollow sections filled with concrete present the added difficulty of involving the deformability of the connected faces in bending. This implies that, unless a good estimate of the moment-rotation curve can be obtained, complex and expensive detailing is required to ensure a fairly rigid response of the joint.
Silva, L. A. P., Neves, L. F. N., Gomes, F. C. T.   +2 more
openaire   +2 more sources

Spatially Tailorable Liquid Crystalline Elastomer Alignment During Digital Light Process 3D Printing

Advanced Functional Materials, EarlyView.
Here, we report the fabrication of 3D printable liquid crystalline elastomer (LCE) structures with spatially tailorable alignment domains within the same layer. This work addresses the long‐standing challenge of preparing complex 3D LCE architectures with patterned functional domains to achieve nonlinear deformations. Fabrication of multi‐domains in 3D
Adam Bischoff, Saman Jamshididana, Zach Miller, Kassandra Hernandez, Nicolas Gonsalves, Andre Olarra, Elliot Yoo, Jeremy A. Herman, Devin J. Roach   +8 more
wiley   +1 more source

Numerical Study on the Flexural Performance of Fully Bolted Joint for Panelized Steel Modular Structure

Buildings
To investigate the initial rotational stiffness and ultimate moment of fully bolted connections in panelized steel modular structures, a finite element analysis was carried out on 20 joint models.
Hao Wang, Xuetong Li, Conghe Tian, Jintao Cui, Xuyue Wang, Chuan Zhao, Yanlai Li   +6 more
doaj   +1 more source

Stiffness Analysis and Optimization of a Co-axial Spherical Parallel Manipulator [PDF]

Modeling, Identification and Control, 2014
This paper investigates the stiffness characteristics of spherical parallel manipulators. By virtue of singular value decomposition, the 6x6 dimensionally inhomogeneous Cartesian stiffness matrix is transformed into two homogeneous ones, i.e., the ...
Guanglei Wu
doaj   +1 more source

Control of Polarization and Polar Helicity in BiFeO3 by Epitaxial Strain and Interfacial Chemistry

Advanced Functional Materials, EarlyView.
In BiFeO3 thin films, the interplay of interfacial chemistry, electrostatics, and epitaxial strain is engineered to stabilize homohelicity in polarization textures at the domain scale. The synergistic use of a Bi2O2‐terminated Aurivillius buffer layer and a highly anisotropic compressive epitaxial strain offers new routes to control the polar‐texture ...
Elzbieta Gradauskaite, Lilia Huynh, Natascha Gray, Quintin N. Meier, Marta D. Rossell, Morgan Trassin   +5 more
wiley   +1 more source

Surgical Results in Rotator Cuff Tears with Shoulder Stiffness

Journal of the Formosan Medical Association, 2007
Little has been mentioned about the treatment of rotator cuff tears and associated shoulder stiffness. We prospectively treated a series of patients with rotator cuff tears associated with shoulder stiffness concomitantly and reported the outcomes.A combined procedure of manipulation, lysis of adhesions, anterior acromioplasty and repair of rotator ...
Shan-Lin Hsu, Jih-Yang Ko, Sung-Hsiung Chen, Re-Wen Wu, Wen-Yi Chou, Ching-Jen Wang   +5 more
openaire   +3 more sources