This work describes the design, implementation and first results of a fatigue test rig capable of subjecting cylindrical specimens of different sizes and materials to complex real-life loading conditions. The resulting test rig can be used to combine a rotating bending load with a fluctuating torsional load. Due to a closed electromechanical loop, power consumption is limited and a maximum test...

manufacturers need to evaluate the reliability of their products in order to increase the customer satisfaction. proper analysis of reliability also requires an effective study of the failure process of a product, especially its failure time. so, the failure process modeling (fpm) plays a key role in the reliability analysis of the system that has been less focused on. this paper introduces a f...

Many Air Conditioning and Refrigeration hermetic compressor shells are designed with cantilevered attachments such as control valves. These attachments are subject to several sources of loading such as shell pressure, external tube load or vibration. One of the most common failure modes yet the least predictable is fatigue due to vibration at the joint with the shell. The purpose of the paper i...

This paper describes a technique to identify the important features in fatigue road load data that cause the majority of the total damage. Fatigue damaging events, called bumps, are extracted from the original road load time history using a wavelet-based algorithm, called Wavelet Bump Extraction (WBE). WBE can be used to produce a mission signal that retains most of the fatigue damage whilst pr...

The ageing of asphalt mixes, together with their exposure to low temperatures, causes a progressive increase of cracking. In this paper, the effect of ageing and temperature on the fatigue of asphalt concretes made with two types of binders, conventional (50/70) and polymer modified bitumen (PMB), is studied. For this purpose, specimens previously subjected to an accelerated laboratory ageing p...

is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. This paper presents an accelerated life testing method applicable to devices or systems when no analytical relationship with respect to the stress level can be defined. If a numerical approach remains possible, the numerical model can be fitted ...