Enhancing the impact resistance performance of carbon fiber-reinforced polymer (CFRP) laminates stands as a prominent research focus among various nations. Existing studies have shown tendency towards arbitrary selection inter-ply helix angle values in CFRP laminates, which is accompanied by limited number samples representing chosen angles. However, existing relatively random spiral between an...

This paper investigates the scattering characteristics of the fundamental anti-symmetric (A(0)) Lamb wave at through holes in composite laminates. Three-dimensional (3D) finite element (FE) simulations and experimental measurements are used to study the physical phenomenon. Unidirectional, bidirectional, and quasi-isotropic composite laminates are considered in the study. The influence of diffe...

OBJECTIVE The values of microbial growth in the air exiting from the heating, ventilation and air conditioning (HVAC) ducts treated with silver/zeolite have been shown to be lower than those in the air coming out the traditional metal ones. This study aims to verify how long this antimicrobial activity lasts. METHODS All the tests were performed according to US ASTM E2180-01 and ISO-JIZ 22196...

This study aims to examine the phenomena that occur due projectile penetration on fiber metal laminate. Ballistic testing was carried out experimentally according National Institute of Justice standards (NIJ Standard 0101.06 level III-A) using a 9 mm full-metal jacket with normal angle attack (90° target). The results showed laminate could withstand rate by penetrating first layer (aluminum pla...

In this study, the dynamic responses under blast loading of carbon fiber reinforced aluminum alloy laminates with different curvature radii, numbers layers, and layer directions were compared numerically. The finite element models built ABAQUS/Explicit. To calibrate numerical models, experiments on curved modeled, results showed good agreement experimental data. calibrated used to simulate resp...