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The theories of impact dynamics and adiabatic temperature change were adopted to investigate the ionization degree of the plasma generated by the 2A12 aluminum target during 2A12 aluminum projectile hypervelocity impact, and the radiant temperature was also estimated during hypervelocity impact. A two-stage light gas gun combined with the plasma characteristic parameters measured by a triple Langmuir...
As the key of braked friction coefficient automatic testing system between tyre and road, the influence factors of the braked force coefficient are very important. The influence factors of braked force coefficient, including the testing speed, tyre type and model, water film thickness and the temperature of road surface etc. are studied and analysised in this paper. The water film thickness and the...
Properties in softening, melting and ignition for a variety of material could be measured by high-temperature physical properties tester, which has a wide application in metallurgy, materials and other fields. To improve the poor performance of traditional testers in bad accuracy and manual operation, a new type of intelligent tester is designed and realized based on computer technology and image...
Based on the principle of piecewise compensation, a modified high-order compensation technique with adaptive feedback control scheme for bandgap reference is proposed. This method focuses on forming multiple local extrema of the curve of reference voltage instead of single valley or peak in the entire operating temperature range, which significantly improves the temperature independence. The circuitry...
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