Results 111 to 120 of about 4,980 (238)

Engineering Phosphorus‐Modified Flame‐Retardant Thermoplastic Polyurethane via Reactive Melt Processing

Journal of Polymer Science, EarlyView.
Phosphorus‐modified TPUs are prepared by one‐step, solvent‐free reactive melt processing using phosphate‐ or phosphonate‐containing diols and PEG or PPG soft segments. Fire behavior and mechanical response depend strongly on both chemistries. Peak heat release rate decreases by up to 54%, but reduced tensile strength and V‐2 dripping behavior reveal a ...
Léa Gratier, Jean‐Marie Raquez, Marianne Cochez, Fouad Laoutid, Henri Vahabi   +4 more
wiley   +1 more source

Torsional strength and deformation characteristics of HSC deep beams reinforced with cross-inclined stirrups. [PDF]

Sci Rep
Fawzi R, Asker HS, Yousef AM.
europepmc   +1 more source

Direct Measurement of Explosive Impulse From Contact to the Ultra‐Near Field

Propellants, Explosives, Pyrotechnics, EarlyView.
ABSTRACT Measurement of impulse from explosive charges in contact and ultra‐near‐field regimes remains poorly characterised due to the short duration of loading, high strain rates, and the difficulty of obtaining direct momentum‐based measurements.
R. Alford, R. Hazael, R. Critchley, L. Humphreys   +3 more
wiley   +1 more source

Stress-Controlled Torsional Fatigue Assessment of Selected Contemporary Endodontic Instruments. [PDF]

Clin Oral Investig
Ohri K, Chien PY, Peters OA.
europepmc   +1 more source

Sliding Mode Control in Aerospace Applications: A Survey

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT Sliding mode control (SMC) enjoys robustness to matched and unmatched (in the case of minimum phase input‐output dynamics) bounded perturbations, and finite time convergence. Second‐order and higher‐order sliding mode control systems (2‐SMC/HOSMC) retain all the advantages of sliding mode control, but in addition can be applied to systems of ...
Yuri Shtessel, Christopher Edwards
wiley   +1 more source

Biomechanical analysis of a novel, triangular spinal fixation system. [PDF]

N Am Spine Soc J
Mazza J, Serbousek J, Fessler RG.
europepmc   +1 more source

High‐Order Sliding‐Mode control for MIMO Systems

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT This paper extends Lyapunov‐based homogeneous high‐order sliding‐mode control to a class of uncertain non‐square multi‐input multi‐output (MIMO) nonlinear systems with a well‐defined vector relative degree. The considered systems admit a normal‐form representation with an uncertain but full‐row‐rank input‐gain matrix.
Jaime A. Moreno, Angel Mercado‐Uribe
wiley   +1 more source

Rotational Stability in a Feline Sacroiliac Luxation Model: Biomechanical Comparison of Cannulated Compression Headless Screws and Cortical Screws Applied in Positional or Lag Fashion. [PDF]

Animals (Basel)
Klement J, Wieser J, Thorwächter C, Zablotski Y, Lorenz ND, Lauer S, Kornmayer M.   +6 more
europepmc   +1 more source

Terrain‐Adaptive Quadrupedal Locomotion Using Model Predictive Control With Impedance Control and SINDy Model Enhancement

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT Quadrupedal robots operating in unstructured environments require adaptive control systems that can handle diverse terrain conditions without prior surface characterization. This paper presents an integrated control architecture that combines Model Predictive Control (MPC) with adaptive impedance control and SINDy‐based model corrections for ...
Peter James McConnellogue, Mien Van, Rhyss McMullan, Dianhao Zhang, Wasif Naeem   +4 more
wiley   +1 more source

Elbow Ulnar Collateral Ligament Reconstruction and Repair: A Systematic Review and Meta-analysis of Biomechanical Studies. [PDF]

Orthop J Sports Med
Looney AM, Hanna AJ, Coladonato C, Sonnier JH, Bodendorfer BM, Anderson CG, Sarna N, Freedman KB, Ciccotti MG, Ciccotti MC, Erickson BJ, Cohen SB.   +11 more
europepmc   +1 more source