Optical strain fields in shear and tensile testing of textile reinforcements

Permeability of textile reinforcements: Simulation, influence of shear and validation

The permeability of textile reinforcements is a crucial input for the simulation of the impregnation stage of a composite material fabrication process. In this paper, we present a fast and accurate simulation method for the permeability of a textile reinforcement, based on a finite difference discretisation of the Stokes equations. Results for single layer, multi-layer and sheared models are di...

control of the optical properties of nanoparticles by laser fields

در این پایان نامه، درهمتنیدگی بین یک سیستم نقطه کوانتومی دوگانه(مولکول نقطه کوانتومی) و میدان مورد مطالعه قرار گرفته است. از آنتروپی ون نیومن به عنوان ابزاری برای بررسی درهمتنیدگی بین اتم و میدان استفاده شده و تاثیر پارامترهای مختلف، نظیر تونل زنی(که توسط تغییر ولتاژ ایجاد می شود)، شدت میدان و نسبت دو گسیل خودبخودی بر رفتار درجه درهمتنیدگی سیستم بررسی شده اشت.با تغییر هر یک از این پارامترها، در...

The Structure – Permeability Relation of Textile Reinforcements

Permeability of Textile Reinforcements: Simulation; Influence of Shear, Nesting and Boundary Conditions; Validation

B. Verleye, R. Croce, M. Griebel , M.Klitz, S.V. Lomov ,G. Morren ,H. Sol , I. Verpoest and D. Roose 1 K.U.Leuven, Dept. Computer Science, Belgium 2 University Bonn, Institute for Numerical Simulation, Germany 3 K.U.Leuven, Dept. of Metallurgy and Materials Engineering, Belgium, corresponding author: [email protected] 4 Vrije Univ. Brussel, Dept. of Mechanics of Material and Construc...

In Situ Thermographic Imaging of Shear Bands During Tensile Testing

Uniaxial tensile tests were conducted on a Zr-based bulk metallic glass (BMG) with a nominal composition of Zr52.5Cu17.9Ni14.6Al10.0Ti5.0 (at.%). An infrared (IR) camera was utilized in situ during tensile testing to observe shear band evolution and fracture in the BMG. This unique visualization technique revealed that the temperature along the axis of shear band propagation constantly decrease...