In the present study, AZ41 and AZ51 alloys were fabricated using disintegrated melt deposition technique followed by hot extrusion. AZ41/Yttria and AZ51/Yttria composites were prepared using 0.6 wt% yttria nano particles in the alloys using the same fabrication technique. From the tensile test results, both strengths (yield and tensile) and ductility were improved in AZ51 when compared to AZ41....

Generalized Modified Positional Syndrome (GMPS), of order p, a new compaction scheme for test output data is presented. The order p determines the alising probability and the amount of hardware overhead required to implement the scheme. GMPS of order two gives an aliasing probability about an order of magnitude lower than the best scheme reported in literature with minimal extra hardware. A har...

prior animal models have shown that rats sustaining 3-second immediate spinal cord compression had significantly better functional recovery and smaller lesion volumes than rats subjected to compression times of 1 hour, 6 hours, 3 weeks, and 10 weeks after spinal cord injury. we compare locomotor rating scales and spinal cord histopathology after 3 seconds and 10 minute compression times. . ten ...

Pathology of the biceps tendon is often a factor in the pathogenesis of shoulder pain. However, diagnosis and management of such pathology remains controversial. Multiple tests have been described to identify pathology related to the biceps tendon and biceps anchor. The active compression test is one such test that has been used clinically to identify patients with superior labral/biceps anchor...

20Mn5 steel is widely used in the manufacture of heavy hydro-generator shaft forging due to its strength, toughness, and wear resistance. However, the hot deformation and recrystallization behaviors of 20Mn5 steel compressed under a high temperature were not studied. For this article, hot compression experiments under temperatures of 850-1200 °C and strain rates of 0.01 s-1-1 s-1 were conducted...

1 Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA, USA 15213-3890 2 Department of Electrical and Computer Engineering, Carnegie Mellon University, Pittsburgh, PA, USA 15213-3890 3 Isotherm Technologies LLC, Medina, OH, USA 44256-6431 ABSTRACT A new Stirling micro-refrigeration system composed of arrays of silicon MEMS cooling elements has been designed and evalu...