fatigue failure

fatigue failure

The rupture of a material as a result of being subjected to repeated loadings at a stress substantially less than its strength under static conditions.
References in periodicals archive ?
Due to the anisotropy and inhomogeneity of the composites, the fatigue failure mechanism is completely different from that of the metal materials.
To induce fatigue failure to an RC deck specimen, repeated loading with a steel wheel was conducted.
Fatigue failure of the rubber material is one of the main forms of failure cause thrust rod; the thrust rod service life depends primarily on the fatigue life of the rubber ball joints [10-14].
In such applications, components made of thermoplastics are typically under cyclic loading and, therefore, prone to fatigue failure. An aspect of thermoplastics which distinguishes them from metallic alloys is their time dependent properties as well as their relatively low melting temperatures.
Mechanical failure of implants fall into 3 categories: Plastic, Brittle and Fatigue failure. Plastic failure is one in which the device failed to maintain its original shape resulting in a clinical failure.
Admittedly, though, the absence of any striations also does not rule out the possibility of fatigue failure, as glass fibers do not generally exhibit the classic fatigue crack growth behavior common to other materials.
This case demonstrates that although modular femoral implants have undergone design modifications, they continue to be at risk for fatigue failure despite an increased resistance to fracture in laboratory conditions.3 The stem, in this case, fractured approximately 1 cm proximal to the base of the taper within a few years of implantation, which is consistent with the location of fracture in other similarly designed modular implants in recent reports.1 This case demonstrates that these implants will continue to be subject to bending moments and fatigue fractures, which can be substantial enough to lead to catastrophic implant fracture under certain circumstances in some patients.
Eventually the investigation led HSE inspectors to consider the securing arrangements for the tower, which were found to be susceptible to fatigue failure.
Road pavements are subjected to a repeated passage of wheel loading of varying magnitude and intensity that could induce fatigue failure by cracking and deformation as a result of fluctuating stresses and strains within the pavement layers.
The vibration fatigue failure of the refrigeration piping systems is one of the major product reliability risks for an HVAC system.
Increase the life of critical components that are vulnerable to fatigue failure. By applying compressive stresses to a surface, crack propagation is inhibited and a super-fine surface finish is created.