BACKGROUND Implants for fracture and/or osteotomy fixation are often tested according to basic mechanical test models such as open gap tests or 4-point-bending tests. These may be suitable to test and compare different implants for safety and clinical approval, but are not always representative of the post-operative situation, which is decisive when it comes to bone healing. In the current stud...

The purpose of this investigation was to design and verify the capabilities of an in vitro loading-measurement system that mimics in vivo unconstrained three dimensional (3D) relative motion between long bone ends, applies uniform load components over the entire length of a test specimen, and measures 3D relative motion between test segment ends to directly determine test segment construct stif...

The multi-class metric problem in nearest neighbour dis-21 nearest neighbors than we achieved. Friedman (1994) proposes a number of techniques for exible metric nearest neighbor classiication. These techniques use a recursive partitioning style strategy to adaptively shrink and shape rectangular neighborhoods around the test point. Friedman also uses derived variables in the process, including ...

The modulus of elasticity (E) was determined in simple three- and four-point bending for an 0.0175" (3 X 0.008") stainless steel arch wire. Using variable light loads (10-160 g) to limit the elastic deflection of a wire to less than 5% of its beam length, the force-deflection profiles were determined for three nominal span lengths (L = 0.35", 0.75", and 1.00") in three-point bending and three n...

Laser forming is a modern process which is mainly used for forming metals. Different Lasers are used in this regard that includes Nd: YAG and CO2. In this study, forming bi-layer sheets of Aluminum/Ceramic by Laser was investigated. Furthermore, effect of Uniform and Gaussian heat flux distribution in different power, velocity, and beam diameters on bending angle was studied. FEM simulation ind...

This study investigated the relationship between acoustic emission (AE) signals parameter sequence fractal characteristics and damage evolution information of corroded reinforced concrete (RC) beams under four-point bending. Strength deterioration behavior AE data can be obtained by coupling bending test monitoring. The results show that ringing counts uncorroded had prominent characteristics. ...

Applications of ceramic materials usually involve thermal stresses that can reduce their lifetime considerably. One of the most relevant mechanical properties for evaluating thermal shock damage resistance is the energy of fracture. In order to obtain this property, a stable crack growth regimen must be achieved throughout the test. In this paper, three-point bending tests are analyzed to deter...

J. Kasińska, Faculty of Mechatronics and Machine Design, Kielce University of Technology, Kielce, Poland The article presents the analysis of fracture surfaces after the three-point bending test at a temperature range from + 20 °C to 80 °C. The author shows a beneficial effect of mischmetal on the cracking mechanism and on the character of fractures. It has been shown that the width of the duct...