The thin wobble motors that are required to hold rating shafts employ an electropermanent magnet. This turns the holding force on and off by applying a momentary electrical pulse. To design magnet devices without need for finite element analyses, theoretical model is necessary predicting attractive force. In this paper, first, derived estimating permeance around air gap. A magnetic circuit cons...

Rotating machines are widely used as components of various industries around the world, and its normal operation rotating is important. Thus, condition monitoring fault diagnosis have considerable attention in recent years. Industrial statistics illustrate that 40% total large machine breakdowns happened due to broken bearings, while for small machines, analogous number reaches up 90%. This stu...

T he cooling performance of oil is critical to the functionality and durability of vehicle drive units, such as transmissions and differentials. Traditionally, automotive R&D teams evaluate cooling performance by building prototypes, installing them in a vehicle, and conducting tests in wind tunnels. The use of free-surface multiphase flow modeling with high-performance computing (HPC) has made...

Multitask measurements with different measuring ranges and resolutions have put forward higher requirements for force sensors. This article presents a novel variable configuration approach to develop an adjustable-resolution sensor compact force-sensitive structure. Unlike the traditional strain gauge-based measurement, external is detected through displacement of deformed structure precision o...

OBJECTIVE The aim of this study was visualization and localization of the human antimicrobials human beta defensins 1, 2, and 3, neutrophil defensin alpha (human neutrophil peptide), and the cathelicidin LL-37 in normal and burned skin, and determination of the cell types in which these antimicrobials were localized. METHODS Tissue sections were probed with antimicrobial antibodies, tagged wi...

The oldest of all the shaft specifications is flex. Once the production problems had been overcome which enabled steel shafts to become a reality, early steel shaft manufacturers began to experiment with producing shafts, which possessed different amounts of resistance to bending. Through the 70 years of shaft design that have followed the introduction of the steel shaft, companies have produce...

We have quantified hippocampal spine structure at the light and ultrastructural levels in cell cultures approximately 1- 3 weeks old and in the brains of rodents 5 and 21 d old. The number of spines bearing synapses increases with age in cultures and in brain, but the structures are similar in both. In culture, about half of the synapses are formed on spines and the remainder are formed on dend...

Introduction Gears are highly engineered machine elements that must be designed not only to meet the torque, speed, life and noise requirements under nominal conditions, but also to compensate for adverse effects due to manufacturing errors, variations and elastic deformations of the support structures. In addition to the elastic deformation of the support and structures, manufacturing errors i...

In this paper, the bond strength of thermal spray coatings in high speed shafts has been studied. The metallurgical and mechanical studies has been made on the coated samples and shaft using optical microscopy, scanning electron microscopy (SEM). Keywords—Thermal spray, Residual stress, Wear mechanism, HVOF, Gas compressor shafts