Results 11 to 20 of about 4,754,074 (251)
Methods for modal parameters identification applied to CNC machine tool feed drives [PDF]
The paper presents a critical appraisal of existing methods for the identification of modal parameters (natural frequencies, damping ratios and mode shapes) for CNC machine tool feed drives.
Widiyarto, Muhammad Helmi Nur +3 more
core +4 more sources
Applied Sciences, 2022 In order to obtain better vibration response data and improve the accuracy of results in large-span steel beam modal tests, this paper proposes an optimization strategy for the arrangement of measurement points on large-span steel beams.
Jian Zhao +4 more
doaj +1 more source
A New Maximum Likelihood Estimator Formulated in Pole-Residue Modal Model
Applied Sciences, 2019 Recently, a lot of efforts have been devoted to developing more precise Modal Parameter Estimation (MPE) techniques. This is explained by the necessity in civil, mechanical and aerospace engineering of obtaining accurate estimates for the modal ...
Sandro Amador +3 more
doaj +1 more source
Numerical Assessment of Building Vibration Techniques Using Laboratory Models [PDF]
Port Said Engineering Research Journal, 2022 Experimental Modal Analysis (EMA) is one of the most attractive engineering fields nowadays, which specifies in the studies of modal parameters of existing small buildings under forced vibrations.
moataz Elrayes +2 more
doaj +1 more source
Damage localization using experimental modal parameters and topology optimization [PDF]
, 2010 This work focuses on the developement of a damage detection and localization tool using the Topology Optimization feature of MSC.Nastran. This approach is based on the correlation of a local stiness loss and the change in modal parameters due to damages ...
Niemann, Hanno +3 more
core +1 more source
Sensors, 2015 The measurement of the internal deformations occurring in real-life composite components is a very challenging task, especially for those components that are rather difficult to access. Optical fiber sensors can overcome such a problem, since they can be
Alfredo Lamberti +5 more
doaj +1 more source
Significance of low energy impact damage on modal parameters of composite beams by design of experiments [PDF]
, 2009 This paper presents an experimental study on the effects of multi-site damage on the vibration response of composite beams damaged by low energy impacts around the barely visible impact damage limit (BVID).
A Shahdin +6 more
core +1 more source
An auralisation method for real time subjective testing of modal parameters. [PDF]
, 2009 Subjective testing is necessary when attempting to determine the human response to audio quality. Small rooms, such as recording studio control rooms themselves have an effect upon the quality of the perceived audio reproduction.
Wankling, Matthew, Fazenda, Bruno
core +4 more sources
Structural Damage Identification Using a Modified Directional Bat Algorithm
Applied Sciences, 2021 Bat algorithm (BA) has been widely used to solve optimization problems in different fields. However, there are still some shortcomings of standard BA, such as premature convergence and lack of diversity.
Yonghui Su, Lijun Liu, Ying Lei
doaj +1 more source
Correlating low energy impact damage with changes in modal parameters: diagnosis tools and FE validation [PDF]
, 2010 This paper presents a basic experimental technique and simplified FE based models for the detection, localization and quantification of impact damage in composite beams around the BVID level.
Niemann, Hanno +7 more
core +1 more source