Microstructural modifications in α-brass targets after small charge explosions

Metals exposed to explosions undergo several macro and micro changes. At the microstructural level slip bands or mechanical twins, caused by the pressure and temperature wave, can be detected. Twinning or slip occurs depending on the metal stacking fault energy, the blast wave pressure and the deformation rate. An experimental campaign was performed on different FCC metals. Results concerning α-brass (30% Zn) are presented herein. Specimens exposed to small charge explosion (100 g of plastic explosive) were analyzed by optical and electronic microscopy, by Electron Back-Scattered Diffraction (EBSD) imaging, and by X-ray diffraction. Microstructural plastic deformation marks were detected and their possible attribution, either to mechanical twinning or to cross slip, is discussed on the basis of X-ray diffraction and EBSD results. The detectability target-to-charge distance limit, and hence the critical stress for microstructural changes, are evaluated

Analisis Perputaran Kas dan Perubahan Penjualan terhadap Profitabilitas pada Perusahaan Manufaktur (Sektor Industri Makanan dan Minuman) Periode 2015 – 2018

This study aims to determine the analysis of cash turnover and sales changes both partially and simultaneously on profitability. The sample selection is done by purposive sampling method and from 6 companies. The research method used in this study is a quantitative method. Statistical testing which is multiple linear regression and data analysis techniques using the classic assumption test. F test results, obtained an F value of 4.887 with a significant level of 0.018 means that simultaneously simultaneous cash turnover and changes in sales have a significant effect on profitability. The t-test results partially indicate the level of significance obtained from the free variable cash turnover of 0.082> 0.05, this shows that cash turnover has no significant effect on profitability. While the independent variable sales growth of 0.033 <0.05, this shows that sales growth has a significant effect on profitabilit