For a manipulator operating in a hazardous or remote environment, an important concern is its capability after a component failure, since retrieval or repair is not always possible. Methods have been presented in the literature for optimizing capabilities after specific types of failures. However, techniques for achieving failure tolerance when conversion between failure types is possible has n...

An ontology for representing operating, safety and control procedures is proposed in this paper that supports diagnosis based on following these procedures and combining observed malfunctions with Failure Mode and Effects Analysis (FMEA) information. The procedure ontology is defined within interconnected components of the process plant, diagnostic analysis (where the FMEA is described) and pro...

Studies on common cause failures are numerous. Little is done on the effect of common cause failure on measures of system effectiveness like mean time to system failure (MTSF). This paper deals with the modeling and evaluation of MTSF of 2-out-of-5 warm standby repairable system with replacement at the occurrence of each common cause failure. Using Kolmogorov’s forward equations method, derivat...

When designing aerospace systems, it is essential to provide crucial failure information for failure prevention. Failure Modes and Effects types of analyses and prior engineering knowledge and experience are commonly used to to determine the potential modes of failures a product might encounter during its lifetime. When new products are being considered and designed, this knowledge and informat...

Modern embedded systems contain complex structures, as they are composed of many subsystems. Maintaining such systems requires collaboration between the engineers who designed them and the engineers who analyzed the failures in them. In this paper we present our proposed visual platform ESSAVis, a 2Dplus3D environment, to help both kinds of engineers in understanding the failure mechanisms of s...

One approach to the study of wear involves the ch~~te~zation of surface failure under conditions of single-pass sliding. Such an approach has been used to show that the wear of commercial and experimental restorative resins and composites is determined by the resistance of the material to penetration and by the mode of deformation during sliding [l] . The purpose of this investigation was to ch...