Directing at the hard machinability of high volume fraction 70% SiCp/Al composites, a longitudinal and torsional ultrasonic-assisted milling (LTUAM) method is proposed to improve edge quality machining efficiency. By observing metallographic structure material, three-dimensional (3D) finite element model random distribution spherical, elliptical polygonal SiC particles established analyzed by A...

In this paper, a finite element (FE) cutting model for particle-reinforced metal matrix composites (PRMMCs) considering material damage was developed to predict SiC particle failure, forces, and machined surface topography in SiCp/Al composite machining, analyze the dynamic mechanisms of chip formation failure evolution. The validity simulation verified by comparing results with forces obtained...

Background Older patients with acute myeloid leukemia (AML) and myelodysplastic syndromes (MDS) experience high-intensity care (eg, chemotherapy, hospitalization, life-sustaining treatments) during the end of life. Early advance planning (ACP) may promote end-of-life that is more consistent patients’ values goals. As COVID-19 pandemic has resulted in a rapid shift to telehealth, use such method...