Usually, the frequency of periodic testing and maintenance for a system are determined based on the frequency of hardware failures or, in some cases, arbitrarily. However, optimizing the periodic maintenance of a system considering risk attributes and potential consequences could meet the demand for ...
The key objective is to develop a method to solve the joint maintenance and inventory problem for systems with a large number of components, long planning horizon, and large inventory. We construct a simulation model to jointly optimize the periodic inspection interval, the periodic reorder interval...
ESD carts racks and chairs being used in your EPA (ElectroStatic Discharge Protected Area) would obviously be used in conjunction with an ESD flooring system; albeit Static Conductive (2.5E4 Ω to 1.0E6 Ω from Point To Point and/or Resistance to Ground) or Static Dissipative (1.0E6 Ω...
The noise level of a high-speed train is a crucial indicator of its operational quality. A significant low-frequency interior noise, referred to as ‘38 Hz’ in this context, has been detected during the operation of high-speed trains. This notable noise
We adopted EMD to analyze daily COVID-19 infections in Tokyo, Japan. First, we demonstrate the decomposition results of each IMF and the trend. The periodic meanings of each IMF were identified by analyzing the decomposed IMFs in the instantaneous frequency domain using HT. Next, to show that...
Relative variability of the process.If the process variability is minimal and the chance of producing an out-of-specification product is negligible, then such a process may be monitored infrequently. This is beneficial when the cost of sampling and testing is high. ...
A technique is described that compensates for the signal spreading caused by dispersion in long range guided wave testing. This is achieved using knowledge... PD Wilcox,MJS Lowe,P Cawley - 《Aip Conference Proceedings》 被引量: 301发表: 2001年 Average dynamics of the optical soliton in communi...
When conducting any kind of evaluation, inspection or testing, be sure to connect the testing equipment's electrodes or probes to the pins of the device under test before powering it on. Otherwise, you may receive an electric shock causing injury. Before grounding an item of measuring equipment...
We chose a relatively large degree of temporal smoothing in order to obtain a frequency precision of 1 Hz, and in order to capture an integer number of periodic cycles of the 6 Hz oscillatory entrainment. In relation to this point, two aspects of the analyses in Wimber et al.17 are...
between different wave fields, which is further analyzed as a function of the imposed modulation. The space–time acoustic phased array enables unprecedented control over sound waves in a variety of applications ranging from ultrasonic imaging to non-destructive testing and underwater SONAR ...