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
Our integrated approach makes sure that every aspect of your company or organization is cyber resilient, from your technology to your processes and your people. Secura is the cybersecurity division of Bureau Veritas, specialized in testing, inspection and certification. Bureau Veritas was founded in...
Vibration is defined as a periodic process of oscillations with respect to an equilibrium point. Application of vibration to a solidifying melt has many advantages, including degassing, grain refinement, accelerating solidification reactions, uniformly dispersing inclusion materials and improving melt feeding...
Most of the models are generic and optimizes the periodic testing frequency based on minimizing component/system unavailability caused by hardware failure only. Optimizing the testing and maintenance interval based on risk and cost was proposed by Vaurio; however, that study did not explicitly ...
Traveling waves and neural oscillation frequency gradients are pervasive in the human cortex. While the direction of traveling waves has been linked to brain function and dysfunction, the factors that determine this direction remain elusive. We hypothesi
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...
and fault classification using CNN with the data generated in the second step. Due to CNN’s excellent multivariate processing capability, it can be trained using scalogram images. The final step is testing and validation of the trained CNN model. The trained model is used to identify the bear...
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
Periodic random excitation is a special form of periodic excitation, similar to pseudo-random, that has several benefits for signal processing. Although called ‘random’ it is not random in the true sense of the word. Within a time period equal to the analysis time frame, the signal is rand...
Hong, for instance, applied a convolutional neural network to classify vibration signals, training and testing the model using samples from over 40 operating transformers. Field trials confirmed the method's feasibility and practical applicability [35]. On the other hand, practical limitations of the...