نتایج جستجو برای: drop impact damage
تعداد نتایج: 1012877 فیلتر نتایج به سال:
When a drop impacts a surface, a dimple can be formed due to the increased air pressure beneath the drop before it wets the surface. We employ a high-speed color interferometry technique to measure the evolution of the air layer profiles under millimeter-sized drops impacting hydrophobic micropatterned surfaces for impact velocities of typically 0.4 m s(-1). We account for the impact phenomena ...
In this research, progressive damage of woven composite materials due to high velocity impact is investigated via finite elements method. Necessity of impact analysis of composite materials using progressive damage method is detailed and available material models for this type of analysis is discussed. Governing equations at onset of failure and failure modes as well as damage growth is express...
Mechanical loads cause severe damage to perishable agricultural products. In order to quantify the mechanical impact during harvest and postharvest processes, several electronic fruits have been developed. The objective of the work described here was to compare on a laboratory scale different types of impact acceleration recording electronic fruits: Mikras implanted in a real potato tuber as we...
We investigate numerically the dynamics of a drop containing bubble impacting onto pool same liquid. show that can be engulfed into after impact only for limited range velocities and sizes. Below critical Weber number, compound bounces from surface. By contrast, above second threshold in bursts during impact. Depending on size, we identify two different mechanisms responsible this higher veloci...
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