Search Results - "Maia, Nuno M. M."

Damage Detection on a Beam with Multiple Cracks: A Simplified Method Based on Relative Frequency Shifts by Gillich, Gilbert-Rainer, Maia, Nuno M. M., Wahab, Magd Abdel, Tufisi, Cristian, Korka, Zoltan-Iosif, Gillich, Nicoleta, Pop, Marius Vasile

“…Identifying cracks in the incipient state is essential to prevent the failure of engineering structures. Detection methods relying on the analysis of the…”
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Conceptual Design of an Unmanned Electrical Amphibious Vehicle for Ocean and Land Surveillance by Policarpo, Hugo, Lourenço, João P. B., Anastácio, António M., Parente, Rui, Rego, Francisco, Silvestre, Daniel, Afonso, Frederico, Maia, Nuno M. M.

“…Unmanned vehicles (UVs) have become increasingly important in various scenarios of civil and military operations. The present work aims at the conceptual…”
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Damage detection and quantification using transmissibility by Maia, Nuno M.M., Almeida, Raquel A.B., Urgueira, António P.V., Sampaio, Rui P.C.

“…Structures experience various types of loads along their lifetime, which can be either static or dynamic and may be associated to phenomena of corrosion and…”
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Damage detection using transmissibility compressed by principal component analysis enhanced with distance measure by Zhou, Yun-Lai, Maia, Nuno MM, Abdel Wahab, Magd

“…Detecting structural damage in operational conditions still encounters some difficulties, especially in early-stage, as environmental varieties impose…”
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Experimental Evidence of Efficient Phononic-Based Vibration Isolators for Mechanical Applications by Policarpo, Hugo, Almeida, Raquel A. B., Neves, Miguel M., Maia, Nuno M. M.

“…Even though the design of vibration isolators is well-established for many engineering applications, their efficiency in wide and multiple frequency ranges is…”
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On the use of the transmissibility concept for the evaluation of frequency response functions by Urgueira, António P.V., Almeida, Raquel A.B., Maia, Nuno M.M.

“…The dynamic characteristics of a structure are often derived from a set of measured frequency response functions (FRFs). However, it may happen that the…”
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Experimental Shock and Vibration Analysis by Serra, Roger, Garibaldi, Luigi, Maia, Nuno M., Thomas, Marc

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Further developments on the estimation of rigid body properties from experimental data by Almeida, Raquel A.B., Urgueira, António P.V., Maia, Nuno M.M.

“…The evaluation of the rigid body properties of a structure is a very important issue for the study of its dynamic behaviour when the influence of the rigid…”
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International Conference on Structural Engineering Dynamics 2013 by Maia, Nuno M. M., Neves, Miguel M.

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Parameter selection and covariance updating by Silva, Tiago A.N., Maia, Nuno M.M., Link, Michael, Mottershead, John E.

“…A simple expression is developed for covariance-matrix correction in stochastic model updating. The need for expensive forward propagation of uncertainty…”
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Adaptive empirical distributions in the framework of inverse problems by Silva, Tiago A. N., Loja, Maria A. R., Carvalho, Alda, Maia, Nuno M. M., Barbosa, Joaquim I.

“…This article presents an innovative framework regarding an inverse problem. One presents the extension of a global optimization algorithm to estimate not only…”
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A New Approach for Severity Estimation of Transversal Cracks in Multi-layered Beams by Gillich, Gilbert-Rainer, Maia, Nuno M. M., Mituletu, Ion-Cornel, Tufoi, Marius, Iancu, Vasile, Korka, Zoltan

“…Abstract Nowadays, the damage severity evaluation in mechanical structures is mostly performed by analyzing the natural frequency shift. The non-isotropic…”
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Early Structural Damage Assessment by Using an Improved Frequency Evaluation Algorithm by Gillich, Gilbert-Rainer, Maia, Nuno M. M., Mituletu, Ion-Cornel, Praisach, Zeno-Iosif, Tufoi, Marius, Negru, Ionica

“…Abstract This paper introduces a method to identify damages in beam-like structures by analyzing the natural frequency changes of the first six transversal…”
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Elastically restrained Bernoulli-Euler beams applied to rotary machinery modelling by Silva, Tiago A. N., Maia, Nuno M. M.

“…Facing the lateral vibration problem of a machine rotor as a beam on elastic supports in bending,the authors deal with the free vibration of elastically…”
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A method for an accurate estimation of natural frequencies using swept-sine acoustic excitation by Mituletu, Ion Cornel, Gillich, Gilbert-Rainer, Maia, Nuno M.M.

“…•Acoustic shaker is employed to excite structures with swept-sine signals.•The transition through resonance for different sweep parameters is investigated.•Two…”
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Structural damage detection using transmissibility together with hierarchical clustering analysis and similarity measure by Zhou, Yun-Lai, Maia, Nuno M.M., Sampaio, Rui P.C., Wahab, Magd Abdel

“…Maintenance and repairing in actual engineering for long-term used structures, such as pipelines and bridges, make structural damage detection indispensable,…”
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Bearing Remaining Useful Life Prediction Based on a Nonlinear Wiener Process Model by Wen, Juan, Zhang, Jiangquan, Gao, Hongli

“…Prognostic is an essential part of condition-based maintenance, which can be employed to enhance the reliability and availability and reduce the maintenance…”
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DC-NNMN: Across Components Fault Diagnosis Based on Deep Few-Shot Learning by Ding, Xu, Wei, Zhenchun, Xu, Pengfei, Xu, Juan, Shi, Lei

“…In recent years, deep learning has become a popular topic in the intelligent fault diagnosis of industrial equipment. In practical working conditions, how to…”
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Train-Induced Fluctuating Pressure and Resultant Dynamic Response of Semienclosed Sound Barriers by Luo, Yunke, Li, Xiaozhen, Li, Qingliang, Zheng, Jing

“…This paper reports on train-induced fluctuating pressure and consequent dynamic response of semienclosed sound barriers (SESBs), a novel type of sound…”
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A Sequential Approach to the Biodynamic Modeling of a Human Finger by Knez, Luka, Boltežar, Miha, Slavič, Janko

“…In an effort to understand the vibration-induced injuries incurred by manual workers, mechanical models are developed and used to predict the biodynamic…”
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