This research deals with axial and oblique impact crash tests on simple and hybrid composite tubes. Axial and oblique impact tests have been generated on simple and hybrid composite tubes with one, two and three layers. A drop test rig was used to conduct the experiments. Furthermore, in order to gain more detailed knowledge about the crash process, finite element simulations of the experim...

In this paper, a novel foam-filled double ellipse tube (F-DET) is proposed. First, the circle and ellipse tubes with three different configurations(hollow, foam-filled, double foam-filled) are investigated under axial and oblique impact by using the nonlinear finite element code LS-DYNA. The numerical results showed that the F-DET tube has the best crashworthiness performance than tubes with ot...

Abstract This paper is an experimental study of the quasi-static mechanical compressive properties reinforced closed-cell aluminum alloy foams with different cell orientations at strain rates. The foam samples were obtained via powder metallurgical route. results compression tests revealed that deformation behavior and foamed composites are highly dependent on orientation reinforcing mesh. Diff...

Abstract With the rapid development of modern society, environmental pollution is increasingly serious, among which noise has become world’s three major. At present, methods to solve problem are becoming more and diverse. Among them, use porous materials for sound absorption reduction still one most important ways. Open-cell aluminum foam high manufacturing costs limited application scenarios. ...

ultraviolet waves, because of their short wavelength, have a high energy and considerable damaging effects on surfaces. protection against ultraviolet radiations is one of the finishing treatments done on surfaces exposed to sunlight. the importance of this issue in relation to human health, due to complications such as skin burns and cancer, is doubled. up to now, different materials such as z...

The goal of the present research is to develop a better understanding of the tensile response of open-cellular aluminum 6061 T6 alloy. Both tensile and compression samples of this metallic foam were tested under constant strain rate conditions at 293, 423, and 523 K. Scanning electron microscopy was performed on individual struts to assess the modes and mechanisms associated with fracture. Theo...

In this study, we report a procedure for producing syntactic steel foams by melt infiltration of millimeter-sized ceramic microspheres. The gravity-fed infiltration method yields steel foam with uniform distributions of microspheres and negligible unintended porosity. The critical parameters in the manufacturing process are the melt temperature and the preheat temperature of the microspheres pr...

Marine structures are frequently subjected to repeated-impact loadings during navigation and operation. The structural damage accumulates, resulting in failures even serious accidents. Experiments were performed using an INSTRON drop tower investigate the dynamic behaviors of aluminum foam sandwich beams (AFSBs) repeated impacts; moreover, mechanism plastic deformation energy absorption charact...

• Properties of metal foams are sensitive to not only porosity but also topology. Thermal conductivities commercial stochastic almost isotropic. Architected have 103% higher thermal conductivity than foams. stiffer and absorb 265% more energy This study conducted pore-scale simulations estimate the stagnant mechanical performance architected The 5-, 10-, 20- 40-ppi aluminum were estimated be 6....