Results 141 to 150 of about 166,199 (309)

Effect of layup layers and stitch row spacing on drop-weight temperature impact and compression after impact behavior of stitched composites

open access: yesMaterials & Design
The number of layup layers and stitch row spacing have important effects on the mechanical properties of 3D stitched composites under different temperature impact loads.
Chenchen Tan   +5 more
doaj   +1 more source

Experimental study on dynamic response and residual compressive strength of composite sandwich panel with PVC foam core under single-point low-velocity impact

open access: yesZhongguo Jianchuan Yanjiu
ObjectivesIn this paper, an orthogonal braided glass fiber composite sandwich panel with a PVC foam core and dimensions of 150 mm×100 mm×26 mm is selected as the research object in order to study the impact mechanical properties of composite sandwich ...
Chongyi CHEN   +6 more
doaj   +1 more source

Impact damage and compression behaviours of three-dimensional angle-interlock woven composites after thermo-oxidation degradation

open access: yes, 2017
This paper reports impact and compression behaviours of three-dimensional angle interlock woven composites after the thermal ageing degradation in both experimental and finite element analyses.
Miao Cao   +3 more
core   +1 more source

High Health Care Utilization Preceding Diagnosis With Juvenile Idiopathic Arthritis

open access: yesArthritis Care &Research, EarlyView.
Objective Although early diagnosis improves long‐term outcomes, patients with juvenile idiopathic arthritis (JIA) often experience prolonged, circuitous paths to diagnosis. To inform diagnostic improvement, we sought to characterize health care utilization in the year preceding diagnosis. Methods We identified 10,021 patients with an incident diagnosis
Anna Costello   +5 more
wiley   +1 more source

Compression after impact testing of carbon fiber reinforced plastic laminates

open access: yes, 1999
Carbon fiber reinforced plastic (CFRP) composite laminates are susceptible for multiple delaminations, which reduce the compressive strength significantly even when the impact load is insufficient to cause visible damage. The post-impact compression test
Murthy, CRL, Ramurthy, TS, Hosur, MV
core  

Discordance Between Patient and Physician Global Assessments in Early Systemic Sclerosis

open access: yesArthritis Care &Research, EarlyView.
Objective This study aims to identify factors associated with patient global assessment (PtGA) and physician global assessment (PhGA) and discordance between them in systemic sclerosis (SSc). Methods Data from adults with early SSc (<5 years) from the Collaborative National Quality and Efficacy Registry were included.
Ellen Romich   +35 more
wiley   +1 more source

Low Velocity Impact and Compression After Impact (CAI) Behavior of Natural Fibers based Sandwich Composite Panels

open access: yes, 2018
The present work focuses on the study of the Compression after impact behaviour of sandwich panels made of Posidonia core and aluminium skins. The work also examines the influence of the Posidonia compaction on the impact and compression behaviour.
Macera L.   +6 more
core  

Immunosuppressive Drug Use in Limited Systemic Sclerosis: An International Survey

open access: yesArthritis Care &Research, EarlyView.
Objective Current guidelines recommend immunosuppressive treatment for diffuse cutaneous systemic sclerosis but are less clear on their use in limited cutaneous systemic sclerosis (lcSSc) in the absence of internal organ complications. We conducted an international survey to understand current immunosuppressive drug prescribing patterns in lcSSc ...
Sabrina Hoa   +3 more
wiley   +1 more source

A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems

open access: yesInternational Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.
A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam   +2 more
wiley   +1 more source

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