Results 91 to 100 of about 2,217 (308)
Macro-microscopic study on the damage threshold strain of particle-filled polymer composites
Polymer TestingDuring the loading process, particle-filled polymer composites will soften due to damage to their internal microstructure, resulting in a decrease in stiffness, toughness, and strength.
Wang Jiaxiang +4 more
doaj +1 more source
Characterization of butacene based composite propellants by loss factor curves determined with DMA
, 2022 S.411-423Butacene® binder, ferrocenyl groups chemically bonded to HTPB backbone, leads to high burn rates BR for Al-AP based composite propellants (BR > 20 mm/s at 7 MPa ), and low pressure exponents (n < 0.5) which gives more flexibility to the rocket ...
Bohn, Manfred A., Seyidoglu, Tijen
core
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
Strong‐Magnetic Flexible Composites for Magnetically Responsive Soft Robots
Advanced Robotics Research, EarlyView.This perspective provides an overview of the performance mechanisms, preparation methods, and applications of strong magnetic flexible composite materials in soft actuators (such as gripping, movement, and sensing), and further explores current opportunities and challenges.
Wenwen Li +4 more
wiley +1 more source
Lifetime prediction of composite rocket propellant with dynamic mechanical analysis
Polymer TestingThe structural integrity of composite rocket propellants is critical for the reliability of rocket motors, as insufficient integrity can lead to failure or even motor explosion.
Viktor Bladholm +2 more
doaj +1 more source
Effect of Temperature on Mechanical Properties of Solid Rocket Propellants
, 2011 Mechanical properties of solid rocket propellants are dependent on temperature. Any change in temperature brings significant change in the tensile strength, percentage elongation, and elastic modulus of the propellant.
Shekhar, Himanshu
core +1 more source
Hard‐Magnetic Soft Millirobots in Underactuated Systems
Advanced Robotics Research, EarlyView.This review provides a comprehensive overview of hard‐magnetic soft millirobots in underactuated systems. It examines key advances in structural design, physics‐informed modeling, and control strategies, while highlighting the interplay among these domains.
Qiong Wang +4 more
wiley +1 more source
FirePhysChemReliable assessment of the long-term structural integrity of solid rocket motors requires quantitative understanding of the stress- and temperature-dependent viscoelastic response of composite propellants subjected to sustained thermo-mechanical loading.
Nellutla Pandarinath Rao +5 more
doaj +1 more source
Effect of MAPO and T313 on the Rheological and Mechanical Properties of Composite Solid Propellant Based on HTPB [PDF]
فناوری در مهندسی هوافضا, 2019 Composite solid propellants have found wide spread applications in missile industries, such as high density, high specific impulse, and possibility of producing large scale grains.
Seyed Amanollah Mousavi Nodoushan +3 more
doaj
Advanced Robotics Research, EarlyView.A flexible liquid‐crystalline electrolyte membrane via in situ photopolymerization of a phosphate‐functionalized mesogen, ionic liquid, and diacrylate monomer is developed. The resulting smectic B (SmB)‐phase structure enables 2D ion transport with high conductivity (10−4 S cm−1).
Chengyang Liu, Masafumi Yoshio
wiley +1 more source