Results 11 to 20 of about 906 (170)

Thermally Drawn Polymeric Catheters for MR-Guided Cardiovascular Intervention. [PDF]

Adv Sci (Weinh)
This research presents an adapted thermal drawing platform for cost‐effective and rapid prototyping of catheters for MR‐guided endovascular interventions. The benefits of the proposed platform are demonstrated in the development of advanced catheter systems, exhibiting excellent mechanical properties and MR visibility.
Abdelaziz MEMK, Tian L, Lottner T, Reiss S, Heidt T, Maier A, Düring K, Mühlen CVZ, Bock M, Yeatman E, Yang GZ, Temelkuran B.   +11 more
europepmc   +2 more sources

Design and analysis of extensible differential‐speed helical drive pipe dredging robot

The Journal of Engineering, Volume 2023, Issue 12, December 2023., 2023
The running state of the robot is simulated through virtual prototype technology. The results show that the robot has reasonable structure, comprehensive functions of cutting, stirring and transporting silt, so that the robot is basically in the ‘slurry flow’ condition in the sewer pipe.
Fei Lou, Jing Guan, Wensai Lu
wiley   +1 more source

SELECTED GEARS CUTTING METHODS DEVELOPMENT [PDF]

Scientific Journal of Silesian University of Technology. Series Transport, 2015
The paper presents a somewhat extended approach to the cutting tools classification. After that authors present results of the research concerning the form – grinding of spur gears with helical teeth.
Stanisław PŁONKA, Jan SZADKOWSKI, Józef MATUSZEK, Paweł KOBIELA   +3 more
doaj  

Parameterized High-Precision Finite Element Modelling Method of 3D Helical Gears with Contact Zone Refinement

Shock and Vibration, 2019
In order to perform a tooth contact analysis of helical gears with satisfactory accuracy and computational time consuming, a parameterized approach to establish a high-precision three-dimension (3D) finite element model (FEM) of involute helical gears is
Yanping Liu, Yongqiang Zhao, Ming Liu, Xiaoyu Sun   +3 more
doaj   +1 more source

Hobbing the Bevel Non-Involute Pinion of Helical-Bevel Gear оf Internal Meshing

Bulletin of Kalashnikov ISTU, 2017
Рассматривается передача с конической шестерней и цилиндрическим колесом внутреннего зацепления, которое изготовляется зубодолблением по обычной технологии. При формировании рабочих профилей зубьев шестерни цилиндроконической передачи внутреннего зацепления возникает технологическая проблема получения рабочего профиля зубьев.
E A Poluektov, T R Khaziev
openaire   +2 more sources

Wavelet application research on tooth surface of spherical involute spiral bevel gear [PDF]

Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2018
In order to improve the machining accuracy of spiral bevel gears, a scheme based on the cubic B-spline wavelet was proposed. Based on the principle of spherical involute formation, a program was made in MATLAB to obtain the coordinate data of discrete points of the tooth surface.
Zhuo Zeng, Xieeryazidan Aday
openaire   +1 more source

Efficient Harvesting of Irregular and Low‐Frequency Mechanical Energy via Hybridized Electromagnetic‐Triboelectric Systems

Small, EarlyView.
ABSTRACT The rapid expansion of the Internet of Things (IoT) and wearable electronics necessitates sustainable power sources to replace the limited electrochemical battery. While mechanical energy harvesting offers a promising solution, traditional harvesters face challenges of irregular and low−frequency environmental sources. This review presents the
Yongbin Han, Ju‐Hyuck Lee, Hong‐Joon Yoon   +2 more
wiley   +1 more source

Design of Gearings from Involute-Bevel Gears

Vestnik IzhGTU imeni M.T. Kalashnikova
The article presents formulas for determining the dimensions of involute-bevel gears and the gearings composed of them. It examines the most general cases of gearings formation, consisting of two involute-bevel gears with crossing axes (hyperboloid gearings), with intersecting axes (bevel gearings), and with parallel axes (cylindrical gearings ...
B.A. Lopatin, S.V. Plotnikova, D.B. Lopatin   +2 more
openaire   +1 more source

A basis for the analysis of surface geometry of spiral bevel gears [PDF]

, 1983
Geometrical procedures helpful in the fundamental studies of the surface geometry of spiral bevel gears are summarized. These procedures are based upon: (1) fundamental gear geometry and kinematics as exposited by Buckingham, et al; (2) formulas ...
Coy, J. J., Huston, R. L.
core   +1 more source

Policy Spandrels: How Design Decisions Can Open Up Spaces for Unintended Policy Change

European Policy Analysis, Volume 12, Issue 2, Spring 2026.
ABSTRACT This article introduces the concept of policy spandrels to make sense of public policies producing second‐order effects that are unintentional from the perspective of policy design and yet are fraught with consequences. By analogy with architectural spandrels—leftover spaces that can be used for unforeseen purposes—policy change can be enabled
Martino Maggetti
wiley   +1 more source