Many steel rope systems are subjected to fluctuating tensile loads and therefore can fail due fatigue. Available fatigue test data indicate that diameter, mean stress, socket type, lay angle length influence the resistance. Most of tests were terminated before full failure ropes. This paper shows termination criterion, such as fracture first wire, 5 % wires or fracture, has a large on resulting...

A yield criterion, not previously compared with the actual macroscopic behaviour of polymers, is herein compared with the pressure-modified octahedral shear stress criterion earlier suggested by others.This new relation, which is a version of the von Mises criterion, accommodates differences in tensile and compressive yield strengths and accounts for any dependence of yielding on the hydrostati...

PURPOSE The purpose of this study was to evaluate the resistance to deformation under static overloading by measuring yield and fracture strength, and to analyze the failure characteristics of implant assemblies made of different titanium grades and connections. MATERIALS AND METHODS Six groups of implant assemblies were fabricated according to ISO 14801 (n=10). These consisted of the combina...

An experimental study and modeling of the behavior wood during compression along fibers was carried out. The nonlinear analytical dependence load on strain considered. Attention focused post-peak stage deformation in order to determine displacement at which transition plastic occurs. work aimed substantiating application energy criterion brittle fracture as a for deformation. To achieve this go...

BACKGROUND Fractured connections between implants and implant abutments or abutment screws are frequently encountered in a clinical setting. The purpose of this study was to investigate fracture strength using a torsion test at the interface between the implant and the abutment. METHODS Thirty screw-type implant with diameters of 3.3, 3.8, 4.3, 5.0, and 6.0 mm were submitted to a torsion test...