In the design of vehicle structures for crashworthiness, there is a need for rigid subsystems that guarantee an undeformable survival cell for the passengers and deformable subsystems able to efficiently dissipate the kinetic energy. The front rail is the main deformable component dissipating energy in a frontal crash, which is the most dangerous crash situation, and for which the structural be...

Yoshiaki NAKAZAWA*, Kenji TAMURA *, Michitaka YOSHIDA* Katsutoshi TAKAGI† and Mitsutoshi KANO† * Sumitomo Metal Industries, Ltd. Corporate Research and Development Laboratories 1-8 Fuso-cho, Amagasaki, Hypgo, 660-0891, Japan e-mail: [email protected], web page: http://www. sumitomometals.co.jp †Toyoda Iron Works CO., LTD. Product Research and Development DIV.NO.2 4-50 Hosoya-cho...

INTRODUCTION Composite materials are often used to reduce the weight of structures. In the automotive industry weight reduction is important because fuel consumption is directly related to vehicular weight. There is an increased concern for occupant safety during roadway accidents. Metals are currently used in car frames and integrated frame-body structures, and these and other metallic compone...

This paper reports the design, making and characterisation of a series of Fe-based bulk metallic glass alloys with the aim of achieving the combined properties of high neutron absorption capability and sufficient glass forming ability. Synchrotron X-ray diffraction and pair distribution function methods were used to characterise the crystalline or amorphous states of the samples. Neutron transm...

Frequency-resolved, three-pulse photon echo peak shifts of the accessory pigments of the reaction center of Rhodobacter sphaeroides were recorded to study the ultrafast pigment-protein dynamics. For a qualitative understanding of the data, which includes an increase in rephasing capability after 1 ps, it is necessary to take into account the influence of the primary electron donor P on the 800 ...

in this study the effect of using multi-walled carbon nanotube (mwcnt) on flexural and compressive strengths, ultimate displacement and energy absorption capability of standard cement mortar considering different weight percentages of nanotubes as well as different dispersion methods has been investigated. influential point in adding nanotubes to the composites is their proper dispersion, which...

the brass tubes with foam cores of alsi7sic3, alsi7sic3fe1 and alsi7sic3fe3 were produced as the crush-boxes with circle and square cross-section. then axial compressive behavior and energy absorption capability of the foam-filled tubes were investigated during the quasi-static progressive plastic buckling. the uniaxial compressive stress–strain curves of the foam-filled brass tubes exhibited t...

purpose: this research seeks to determine the level of knowledge sharing, the absorptive capacity, and the innovation capability at the central libraries of the state universities of tehran in 1393. besides, it seeks to identify the relationship between knowledge sharing and innovation capability in the library. methodology: this applied research is carried out using survey method – correlation...

In recent years, closed-cell porous Aluminum (Al) has drawn increasing attention, particularly in the applications requiring reduced weight and energy absorption capability such as in the automotive and aerospace industries. In the present work, porous Al with closed-cell structure was successfully fabricated by powder metallurgy technique using PMMA as a space holder. The effects of the amount...

Mechanics of CNT-reinforced nano-cellular PMMA nanocomposites are investigated using coarse-grained molecular dynamics simulations. Firstly, static uniaxial stretching of bulk PMMA polymer is simulated and the results are compared with literature. Then, nano-cellular foams with different relative densities are constructed and subjected to static uniaxial stretching and obtained stress-strain cu...