Results 271 to 280 of about 56,044 (312)

Cyclic Fatigue in Metal Bellows

Volume 3: Design and Analysis, 2013
Engineers who encounter the need for metal bellows expansion joints in piping and heat exchangers are often challenged by cyclic fatigue life calculation methods. ASME has published formulas for predicting low cycle fatigue life of metal bellows. Both B31.3 Appendix X and BPVC VIII Appendix 26 are similar in their approach, but are based on a data set ...
openaire   +1 more source

Cyclic contact fatigue of a silver alternative to amalgam

Dental Materials, 1998
To purpose of this study was to compare the cyclic contact fatigue resistance of a novel mercury-free silver direct filling material to that of a dental amalgam (Dispersalloy).The silver specimens were made by pressing a precipitated powder at room temperature with a pressure of 150 MPa, which can be achieved in clinical hand-consolidation. To simulate
H H, Xu, F C, Eichmiller, A A, Giuseppetti, C E, Johnson   +3 more
openaire   +2 more sources

Reduction of muscle fatigue in man by cyclical stimulation

Journal of Biomedical Engineering, 1988
In order to develop a control system for electrical stimulation of paralysed muscle and improve muscle resistance to fatigue, it is useful to investigate the possibilities of simulating the control systems of the normal body. One way is the periodic shifting of stimulation from one muscle to another.
M, Pournezam, B J, Andrews, R H, Baxendale, G F, Phillips, J P, Paul   +4 more
openaire   +2 more sources

Cyclic fatigue life of cables

Engineering Fracture Mechanics, 1991
Abstract Methods for calculating the fatigue life of cables with an infinite number of parallel wires are presented. The methods account for the effects of cable legnth and the increase in stress range that occurs as cable wires break. Comparisons are made with fatigue lives of cables with finite numbers of wires calculated by Monte Carlo simulation.
J.M. Stallings, K.H. Frank
openaire   +1 more source

Cyclic fatigue of instruments for endodontic glide path

Odontology, 2013
Endodontic glide path is the creation of a smooth patency from canal orifice to apex, which can be performed manually or with small tapered NiTi rotary instruments. The use of stainless steel (SS) hand K-files inserted in a reciprocating handpiece can be a possible alternative to create a mechanical glide path.
GAMBARINI, Gianluca, Gianluca Plotino, Gianpaolo Sannino, GRANDE, NICOLA MARIA, Alessio Giansiracusa, Lucila Piasecki, U. x. Da Silva Neto, Dina Al Sudani, TESTARELLI, Luca   +8 more
openaire   +2 more sources

Cyclic Fatigue behavior of Ceramics

1983
In recent years, ceramics have been investigated because of their application as structual components at high temperature. A great deal of this research has dealt with various mechanical properties. Although, considerable effort has been made in the study of fracture strength and creep properties, comparatively a little is known about the fatigue ...
Y. Matsuo, Y. Hattori, Y. Katayama, I. Fukuura   +3 more
openaire   +1 more source

Influence of cyclic torsional preloading on cyclic fatigue resistance of nickel – titanium instruments

International Endodontic Journal, 2014
AbstractAimTo evaluate the effect of different torsional preloads on cyclic fatigue resistance of endodontic rotary instruments constructed from conventional nickel‐titanium (NiTi), M‐Wire or CM‐Wire.MethodologyEighty new size 25, 0.06 taper Mtwo instruments (Sweden & Martina), size 25, 0.06 taper HyFlex CM (Coltene/Whaledent, Inc) and X2 ProTaper ...
PEDULLA', EUGENIO, LO SAVIO, Fabio Raffaele Emilio An, Boninelli S, Plotino G, Grande NM, RAPISARDA, Ernesto, LA ROSA, Guido   +6 more
openaire   +4 more sources

Influence of cyclic frequency on strain localization and cyclic deformation in fatigue

Materials Science and Engineering: A, 1994
Abstract To explore the stability of typical, fatigue, dislocation structures when subjected to cycling with different frequencies, polycrystalline copper has been subjected to single- and multiblock tests under constant loading, but different frequencies of 0.5, 2 and 8 Hz.
Herwig Mayer, Campbell Laird
openaire   +1 more source

Muscle Fatigue and Fatigue-Related Biomechanical Changes During a Cyclic Lifting Task

Spine, 2003
Electromyographic and biomechanical methods were utilized to investigate correlations between indexes of localized muscle fatigue and changes in the kinematics and kinetics of motion during a cyclic lifting task.Recent advances in time-frequency analysis procedures for electromyographicic signal processing provide a new way of studying localized muscle
BONATO P, EBENBICHLER GR, ROY SH, LEHR S, POSCH M, KOLLMITZER J, DELLA CROCE, Ugo   +6 more
openaire   +3 more sources

Cyclic fatigue of a silicon nitride: influence of frequency and fatigue mechanism

Journal of Materials Science, 1996
An investigation has been carried out on the slow crack growth behaviour of an advanced Si3N4 ceramic material at room temperature at different loading frequencies. The results clearly show a detrimental effect of cyclic loading on crack growth rate in terms of time and a reduced crack growth resistance with increasing cyclic frequency.
Y. H. Zhang, L. Edwards, W. J. Plumbridge   +2 more
openaire   +1 more source