Prognostics and systems health management (PHM) is an enabling discipline that uses sensors to assess the of systems, diagnoses anomalous behavior, predicts remaining useful performance over life asset. The advent Internet Things (IoT) enables PHM be applied all types assets across sectors, thereby creating a paradigm shift opening up significant new business opportunities. This paper introduces concepts discusses opportunities provided by IoT. Developments are illustrated with examples...

To identify the safety issues associated with hydrogen fueling stations, incidents at such stations in Japan and USA were analyzed considering regulations these countries. Leakage due to damage fracture of main bodies apparatuses pipes is mainly caused by design error, that is, poorly planned fatigue. Considering present countries, adequate consideration usage environment very important. from flanges, valves, seals screw joints. If welded joints are be used Japan, strength data for parts...

Hydrogen, which is expected to be a popular type of next-generation energy, drawing attention as fuel option for the formation low-carbon society. Because hydrogen energy different in nature from existing technologies, it necessary promote sufficient social recognition and acceptability technology its widespread use. In this study, we focused on effect initiatives improve awareness technology, thereby investigating those participating either several introduction events or professional...

Multiple-energy-fueling stations, which can supply several types of energy such as gasoline, CNG, and hydrogen, could guarantee the efficient use space. To guide safety management hybrid hydrogen–gasoline fueling utilize liquid hydrogen an carrier, scale gasoline pool fires was estimated using hazard assessment tool Toxic Release Analysis Chemical Emissions (TRACE). Subsequently, temperature stress due to distribution were ANSYS. Based on results, storage tanks discussed. It inferred that...

The utilization of hydrogen energy is important for achieving a low-carbon society. Japan has set ambitious goals stations and fuel cell vehicles, focusing on the introduction dissemination self-refueling systems. This paper evaluates public trust in fuel, equipment, self-handling technology related to compares it with that widespread gasoline stations. To this end, results an online survey 300 people Japanese driver licenses are reported analyzed. show equipment more user than fuel. In...

Adequate safety measures are crucial for preventing major accidents at hydrogen fueling stations. In particular, risk analysis of the domino effect stations is essential because knock-on likely to intensify consequences a relatively small incident. Several assessment studies have focused on stations, but none investigated accidental scenarios related such Therefore, purpose this study identify scenario, analyze scenario by using simulations and propose mitigating scenario. hazard...

A method of risk identification is developed by comparing existing and advanced technologies from the viewpoint comprehensive social risk. First, to analyze these values a multifaceted perspective, we constructed questionnaire based on 24 individual 26 infrastructural determined in previous study. Seven engineering experts six science were then asked complete compare hydrogen energy system (HES) gasoline (GES). Finally, responses weighted using analytic hierarchy process. Three important...

Hydrogen fueling stations are essential for operating fuel cell vehicles. If multiple safety measures in a hydrogen station fail simultaneously, it could lead to severe consequences. To analyze the risk of such situation, we developed physical model station, which, when using, temperature, pressure, and flow rate be simulated under normal abnormal states. The was validated by comparing analytical results with experimental an actual station. By combining statistical method, evaluated...

There have been serious debates about whether Pb should be removed from solder joints, in view of environmental problems. These now developed to the extent that a remarkable movement establish regulations for removal has emerged, especially European countries and Japan. Therefore, many studies are aggressively being undertaken develop technologies replacing Sn-Pb with lead-free alternative. From results obtained so far, it proven fatigue strength joints is almost equivalent eutectic joints....

In response to the evolving energy landscape and heightened environmental concerns, our study meticulously evaluated public perceptions on system risks in Japan by employing analytic hierarchy process within a unique project management framework. This novel approach allows for detailed, hierarchical examination of risk factors directly engaging with diverse demographic through an extensive survey 3750 participants. Our findings highlight critical priorities such as supply stability,...

As electronic components become smaller, tin whiskers have an increasingly adverse effect on the assessment of reliability components. In particular, contact between brings about whisker initiation near area. Although a number spontaneous models been proposed, model by loading has not yet established. this paper, behavior stress-induced whiskering load was examined in plating based multiaxial creep theory. Creep properties were measured using nanoindentation technique. The rate Sn-10Pb is...

As the shrinkage and integration of devices, creep behavior tin-based alloys becomes important with microscales. In this paper, deformation in solder during a nanoindentation test was examined. Nanoindentation carried out for balls. Obtained results summarized as follows: (i) The stress exponent power-law estimated can be evaluated from evolution hardness. These values obtained early stage corresponds that bulk within range high strain rate. (ii) sensitivity decreases after relaxation tests....