The mechanical response of a metal–matrix composite to dynamic shearing deformations has been measured, using a new design of the thin-walled tubular specimen for the torsional Kolsky bar experiment that allows working with these difficult-to-machine materials. The advantages of using the new specimen design are as follows: (i) the thickness of the thin wall along the axial direction is very un...

Investigation was to study the influence of pulse-impact on microstructure of Liquid-Phase-Pulse-Impact Diffusion Welding (LPPIDW) welded joints of aluminum matrix composite SiCp/A356, SiCp/6061Al, Al2O3p/6061Al. Results showed that under the effect of pulse-impact: 1) the interface state between reinforcement particle (SiC, Al2O3) and matrix was prominently; 2) the initial pernicious contact-s...

SiCp/Al composites have excellent physical properties and are widely used in aerospace other fields. Because of their poor machinability, they often machined by non-traditional machining methods such as electrical discharge (EDM). In the process EDM, due to “shielding” effect reinforced particles SiC, local ejection force is low during processing process, it difficult throw smoothly, which ulti...

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...