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The aim of this study is to apply ‘fishbone diagram of service system failure’ and ‘Failure Mode and Effects Analysis’ (FMEA) to decompose service system failures of the bank counter, and to propose improvement suggestions for optimizing the service system at the bank counters. Therefore, the study utilizes fish bone diagram to recognize the service system failure and cause-and-effect relationship...
Critical systems are systems that have direct effects on human health and life. Large production systems are an example of the critical system. Safety is a concept that is ubiquitous in our life but has never been clearly defined. A common confusion with safety is that safety is viewed to be the same as reliability. In this paper, we revisit the concept of safety and propose a new approach for design...
This paper presents a indices-based dispatching support system which provides a hierarchical multi-level multi-department structure to combines a management-level and technical level to the system operators. By digging a “past” state, monitoring a “present” state and forecasting a “future” state, a comprehensive system operation can be realized. The advanced dispatching operation can be further provided...
Health condition monitoring and fault diagnostics of turbo fan engines play significant roles in overall cost reduction and reliability enhancement of the aircraft system. Among various types of potential faults in a turbo fan engine, crack initiation and propagation in the bladed disks of engines caused by high-cycle fatigue under cyclic loads are typical ones that could result in the breakdown of...
We present industry's smallest eDRAM cell and the densest embedded memory integrated into the highest performance 32nm High-K Metal Gate (HKMG) SOI based logic technology. The cell is aggressively scaled at 58% (vs. 45nm) and features the key innovation of High-K Metal (HK/M) stack in the Deep Trench (DT) capacitor. This has enabled 25% higher capacitance and 70% lower resistance compared to conventional...
In our earlier paper, we proposed a new “Intelligent Operation” concept for high voltage SF6 gas circuit breakers, in which the moving contacts are self-adaptively controlled according to the system condition to optimize the breaking performance. To analyze and design the operation, a new model of high voltage SF6 gas circuit breaker is developed, and the moving characteristics of the new smart breaker...
Isotropic conductive adhesives (ICAs) are a type of interconnect material used more and more widely in computer, robot, mobile phone, LED and so on. Compared with traditional solders, isotropic conductive adhesives have better working plasticity, creep resistance and heat resistance. In particular, isotropic conductive adhesives are more responsive in high density packaging than solder, which determines...
Trap-assisted charge transport has been under study for long time in connection with a wide range of problems in microelectronics: the influence on the operation of MNOS memory transistors, the capacity enhancement of electrically programmable read-only memories (EPROMs), or reliability issues of insulators with high dielectric constant. The problem of the trap-assisted tunneling in LED has been addressed...
Case-based reasoning (CBR) is a methodology for problem solving, which suggests a solution to a new problem based on the previously-solved problems and their associated solutions. A key issue in this methodology is that can we always trust the solutions suggested by a case-based reasoning system? This paper studies the reliability of CBR systems at an overall level first. Factors affecting the reliability...
This paper presents for the first time a full 32 nm CMOS technology for high data rate and low operating power applications using a conventional high-k with single metal gate stack. High speed digital transistors are demonstrated 22% delay reduction for ring oscillator (RO) at same power versus previous SiON technology. Significant matching factor (AVT) improvement (AVT~2.8 mV.um) and low 1/f noise...
Organic light emitting diodes (OLEDs) is one of the most potential display technologies in the flat panel display (FPD) field, and its applications include simple monochrome large-area lighting to full color, video-capable graphics displays and so on. As organic materials are susceptible to humidity and oxygen, encapsulation is a key issue for OLED device reliability. In the present paper, two kinds...
Interfacial reactions between Sn-0.4Co-0.7Cu eutectic alloy and immersion Ni/Cu substrate have been investigated after reflow and high temperature storage. The reflow peak temperature at 265degC and a total duration time of 6 minutes were used. The duration time at the peak temperature of the reflow process was approximately 2 min. The aging temperature was 150degC and the duration time was 100 h,...
The mechanical bending test results, as well as the modeling and calculation data were presented in this study to characterize the solder joint reliability. Bending test was completed simply by loading a series of displacements on the FR-4 printed circuit board (PCB) with devices and solder joints in single direction. A special bending tester that can control displacement exactly by a cam system was...
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