To enhance grid reliability, weak points must be monitored. One of the weaknesses is cable joints, which are prone to failure and can cause great losses from both a technical economical point view. Joints failures usually caused by impurities unintentionally added during installation that partial discharges (PDs). In time, these erode insulation generate treeing up destructive discharge between...

This paper describes the development of a polyimide-based MEMS strain-sensing device. Finite element analysis was used to investigate an artificial knee implant and assist on device design and to optimize sensing characteristics. The sensing element of the device was fabricated using polyimide micromachining with embedded thin-metallic wires and placed into a knee prosthesis. The device was eva...

This paper presents a joint imperfection detection method for on-line process monitoring of laser brazing processes. The method uses images from two spectral ranges and fuses their features with the scores of the separately calculated log-likelihood ratios to decide whether the currently generated part of a joint contains an imperfection or not. To avoid unconfident classifications, a decision ...