Andris Jakovics

TL;DR: In this paper, it is suggested and supported by the evidence presented within this article that WEC is neither related to the presence of nonmetallic inclusions nor related to other impurities in the steel.

TL;DR: In this article, transverse cracks in cross-ply laminates are investigated experimentally to reveal the essential characteristics of their opening displacement under tensile loads and the average crack opening displacement is studied as a function of the longitudinal overall strain and the effects of matrix toughness and transverse ply thickness.

TL;DR: In this article, a global permeability model is developed and applied to a biaxial non-crimp stitched fabric (NCF), which takes into account the local permeability distribution in a fabric due to perturbations of the geometry as well as the geometrical features which arise from the stitching process.

TL;DR: In this paper, the authors modeled bubble motion through interbundle channels in biaxial non-crimp fabrics and found that the paths of the bubbles depend significantly on the position of the threads keeping the fabric together and the number of fibres crossing the inter-undle channels, and that the pressure difference over trapped bubbles increases with 50% in a 3D geometry possible helping the bubble to escape.

TL;DR: In this paper, the effect of expected perturbations from perfect geometries, such as fibre bundle crimp, on the permeability of real fabrics used in composite manufacturing is investigated.