Results 91 to 100 of about 38,920 (290)

Electron beam absorption in 3D-printed polymer samples with different infill densities

Journal of Physics: Conference Series, 2019
Abstract In this work, we study the efficiency of electron absorption by the plastic samples produced using 3D printing with different infill densities. We investigate the influence of the print layer orientation relative to the electron beam axis on the radiation dose distribution.
Bulavskaya, Angelina Aleksandrovna, Danilova, Irina Borisovna, Dontsov (Doncov), Yuriy Vladimirovich, Cherepennikov, Yuriy Mihaylovich, Miloichikova, Irina Alekseevna, Stuchebrov, Sergey Gennadevich   +5 more
openaire   +2 more sources

3D‐Printed Dynamic Heart Model With Left‐Side Anatomy and Integrated Sensor for Edge‐to‐Edge Repair and Regurgitation Reduction

Advanced Materials Technologies, EarlyView.
This work presents a fully synthetic, 3D‐printed dynamic heart model with left‐side anatomy featuring sutured mitral valve chordae tendineae analogs, embedded actuators for physiologic wall contraction, and customized flexible pressure sensors for the left ventricle.
Alejandro Guillen Obando, Hongyi Shen, Myles McGovern, Yusen Zhang, Vivien Lin, Darryl Fu, Ryan Baumwart, Kaiyan Qiu   +7 more
wiley   +1 more source

Tribo-mechanical performance and microstructural characterization of FDM printed PLA and ABS components

Journal of Materials Research and Technology
Fused Deposition Modelling (FDM) has emerged as a transformative additive manufacturing technology enabling rapid fabrication of complex thermoplastic components, yet systematic understanding of how infill density simultaneously influences mechanical ...
K.G. Sagar, S.S. Naveen, K. Hemanth, P.C. Sharath, C. Shravankumar, P. Sampathkumaran, Ananda Hegde   +6 more
doaj   +1 more source

Densely distributed and real-time scour hole monitoring using piezoelectric rod sensors [PDF]

, 2019
This study aims to validate a piezoelectric driven-rod scour monitoring system that can sense changes in scour depth along the entire rod at its instrumented location.
Funderburk, Morgan L, Huang, Shieh-Kung, Loh, Chin-Hsiung, Loh, Kenneth J   +3 more
core  

Fully 3D‐Printed Wave‐Wound Electromagnetic Motors

Advanced Materials Technologies, EarlyView.
This work presents the first fully 3D‐printed wave‐wound electromagnetic motors, which are created using conductive nanoparticle inks, carbon‐filled nylon polymers, and surface mount components. These motors can achieve a stall torque of 7.62N·mmA−1$7.62 \nobreakspace N{\cdot }mm A^{-1}$ and efficiency of 28.2 %, which approaches the performance of ...
Joseph Schwalbe, Sebastian Mettes, Eduardo Francke, Kenneth W. Allen, Yi Chen Mazumdar   +4 more
wiley   +1 more source

Soft Robotic Snake with Tunable Undulatory Gait for Efficient Underwater Locomotion

Advanced Robotics Research, EarlyView.
This study designs an underwater soft snake robot using 3D‐printed soft actuators, controlled by specific signals to generate sinusoidal undulation. Results show a positive correlation between speed and swing amplitude, with optimal performance at 2/3π phase offset, PLA tail, 1.2 voltage growth rate, and 6s undulation period achieving a maximum speed ...
Huichen Ma, Junjie Zhou, Raye Yeow
wiley   +1 more source

Revisiting topology optimization with buckling constraints

, 2018
We review some features of topology optimization with a lower bound on the critical load factor, as computed by linearized buckling analysis. The change of the optimized design, the competition between stiffness and stability requirements and the ...
Ferrari, Federico, Sigmund, Ole
core   +1 more source

Measurements and tests of hadronic interactions at ultra-high energies with the Pierre Auger Observatory [PDF]

, 2019
Extensive air showers are complex objects, resulting of billions of particle reactions initiated by single cosmic ray at ultra-high-energy. Their characteristics are sensitive both to the mass of the primary cosmic ray and to the details of hadronic ...
Cazon, Lorenzo
core   +2 more sources

Grip and Grasp: Lizard Claw Inspired Robotic Manipulators

Advanced Robotics Research, EarlyView.
Our study identifies the most effective lizard claw shape for use as an end effector in a bioinspired robotic manipulator. By examining key geometric features and combining them into comparative indices, the Crotaphytus collaris claw is found to be the best fit.
Hyeon Lee, Kate Douglas, Asyiah Bray, Andrea Rummel, Parvez Alam   +4 more
wiley   +1 more source

Anisotropic Tensile Properties of Polylactic Acid Material at Different 3D Printing Conditions

Journal of Engineering
Additive manufacturing (AM) utilizes anisotropic materials with mechanical properties varying by printing variables. Polylactic acid (PLA), common in three-dimensional (3D) printing, provides strength and ductility variations regarding printing ...
Najmuldeen Yousif Mahmood
doaj   +1 more source