available online at http://meteoritics.org 747 © Meteoritical Society, 2003. Printed in USA. Noble gases in Muong Nong-type tektites and their implications Sayaka MIZOTE,1 Takuya MATSUMOTO,1 Jun-ichi MATSUDA,1* and Christian KOEBERL2 1Department of Earth and Space Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560–0043, Japan 2Department of Geological Sciences, Universit...

In this paper, a novel approach is proposed to investigate the progressive collapse damage of prismatic thin walled metal columns with different regular cross sections, under the action of axial quasi-static and impact loads. The present work mainly focuses on implementation of some important factors which have been neglected in other studies. These factors include the effect of reducing impact...

Our research investigated the energy absorption characteristics of chiral auxetic lattices filled cylindrical composite tubes subjected to a uniaxial and lateral quasi-static load. The lattice structures were manufactured using 3D printing technique. Carbon fiber without filler material initially crushing same types experiment then performed on tubes. For different cases, load–displacements cur...

Two types of crushing were applied to grains of red sorghum: manual crushing using a mortar and pestle of kitchen and mechanical crushing using a hammer mill. The flours obtained at the end of these various crushing were filtered and subdivided in different fractions according to the diameters of the mesh of the sieves (0.16mm; 0.25mm; 0.315mm; 0.4mm, and 0.63mm...). Some physical, chemical and...

To analyse the feasibility of low-grade highway as a launch site in military applications and improve pavement crushing technology civilian applications, this study investigates evolution characteristics under impact load, including deflection, crack, energy, via continuum–discontinuum element method (CDEM). end, paper proposes an energy statistics algorithm, correctness is verified. Then, quar...

The compressive properties of premium quality cocoa beans from Ghana considering the effect of moisture content in the moisture range of 7% to 22 % (w.b) were studied. The results of the study demonstrated that the displacement at maximum load or the deformation and the crushing energy had more positive linear function with moisture content and increased significantly from 0.80 mm to 1.87 mm an...

Randomness and discreteness for appearance of pop-out of the single crystal silicon with a (100) orientation were studied by a self-made indentation device. For a given maximum penetration load, the load Ppo for appearance of pop-out fluctuates in a relatively large range, which makes it hard to study the effect of the loading/unloading rate on the load Ppo. Experimental results with different ...

high performance fiber reinforced cementitious composite (hpfrcc) materials exhibit strain hardening behavior with multiple cracking under tensile loading. in this paper, experimental and parametric studies are performed to assess the influence of using hpfrcc material instead of normal concrete in reinforced concrete beams. after calibrating the experimental results, the analytical results inc...