RATIONALE Distal humeral diaphyseal fractures are much less common than supracondylar humeral fractures. The triangular shape and thinner periosteum in the diaphyseal region than in the supracondylar region of the distal diaphysis makes the treatment of diaphyseal fractures difficult. Nonoperative treatment for this fracture is challenging and troublesome; thus, open reduction and internal fixa...

BACKGROUND Clavicle fractures are common and optimal treatment remains controversial. Recent literature suggests operative fixation of acute displaced mid-shaft clavicle fractures (DMCFs) shortened more than 2 cm improves outcomes. We aimed to identify correlation between plain film and computed tomography (CT) measurement of displacement and the inter- and intraobserver reliability of repeated...

In this paper, bispectral analysis of vibration signals is used to assess health conditions of different rotatingcomponents in an AH-64D helicopter tail rotor drive train. First, cross-bispectral analysis is used to investigate drive-shaft faulted conditions -namely misalignment, imbalance, and a combination of misalignment and imbalance -with respect to a baseline case. The magnitude of the cr...

The use of piles as settlement reducers in the design artificial embankments on soft soil strata is nowadays very common. methods employed current engineering practice are based simplified approaches not allowing assessment average and differential settlements at top embankment. In this paper, a model to estimate both displacements embankment introduced. This, choice substructuring spatial doma...

The purpose of this study was to investigate the influence of shaft stiffness on grip and clubhead kinematics. Two driver shafts with disparate levels of stiffness, but very similar inertial properties, were tested by 33 golfers representing a range of abilities. Shaft deflection data as well as grip and clubhead kinematics were collected from 14 swings, with each shaft, for each golfer using a...

Abstract To solve the problem of equipment installation space shortage in industrial automation sites, a set hybrid transmission schemes was designed with two-stage 2K-H(NGW) planetary reducer as main mechanism combined fixed shaft gear train and worm mechanism. At same time, to obtain design parameters electric actuator more quickly accurately, minimum volume maximum efficiency objectives, mul...

This study introduces a new energy dissipation device with high damping capacity for the seismic protection of buildings. The exploits friction losses between movable shaft and lead core to dissipate takes advantage prestressing material control force. Numerical analyses are introduced evaluate influence on axial force device. Cyclic tests performed prototype demonstrate capability, an equivale...

As the main drive components of the automobile transmission, the performance of gear shaft plays an important role on transmission performance. Aiming at the existing problems of the traditional strength check method of gear shaft, the objective of this study is to take a five-speed transmission as an example, to accomplish the strength analysis of gear shaft of the automobile transmission base...

In this study, rotating flexible shaft-disk system having flexible beams is considered as a dynamic system. After neglecting nonlinear terms, torsional vibration of the shaft-disk system and lateral and longitudinal vibration of the flexible beam are still coupled through the motor speed. The system has three natural frequencies; the flexible shaft-disk system torsional natural frequency, the f...

Abstract An axial vane rotary engine (AVRE) is a novel type of engines. The positive displacement mechanism that permits the four “stroke” action to occur in one revolution shaft with minimum number moving components comparison reciprocating In this paper, two-zone combustion model developed for spark ignition AVRE. chamber divided into burned and unburned zones differential equations are chang...