In the present research, the effects of spot-welding process parameters on the nugget diameter and electrode penetration depth of spot-welded joints were investigated. To achieve this, a spot-welded joint of three-thin sheet low carbon steels (same thicknesses of 0.8 mm) was simulated as an electerical-thermal-mechanical coupling of 3D finite element model. After validating the finite element s...

This study investigated the surface residual stress for AISI 1045 steel quenched by a YAG laser. A coaxial laser spindle was installed on CNC machine experiment. The motion arranged to follow path of an extended cycloid which widened quenching area surface. Both temperature distribution and stresses were measured thermocouples portable X-ray diffractometer, respectively. When cooled down near v...

We study the laser-driven acceleration of electrons from overdense hydrogen clusters to energies up 13 MeV in laser forward direction and several hundreds keV an outer ring-like structure. The use cryogenic allows for high repetition-rate operation examination influence source parameters like temperature gas flow. structure accelerated electrons, originating interaction, that is robust against ...

Abstract Impact monitoring of plate structures has always been a hot spot in structural health research. In order to improve the accuracy impact monitoring, this paper proposes beam-focusing localization algorithm based on passive tomography using sensor arrangement method ring array. The damage large-sized different directions is performed by each linear array and distribution maps correspondi...

Results of recent microbicide and pre-exposure prophylaxis clinical trials have shown adherence to be a significant challenge with new HIV prevention technologies. As the vaginal ring containing dapivirine moves into two open label follow-on studies (HOPE/MTN-025 and DREAM) and other antiretroviral-based and multi-purpose prevention technology ring products advance through the development pipel...

Is there a significant difference between modelled and observed amplification of surface trends in the tropical troposphere

A region comprising the 5.8S RNA gene and internal transcribed spacers 1 and 2 of the take-all patch fungus, Gaeumannomyces graminis var. avenae, was cloned and sequenced using primers from the flanking 17S and 26S ribosomal RNA genes. The sequenced region had 99% similarity between the two G. graminis isolates, and from 70% to 80% similarity between these two isolates and several other species...