Results 31 to 40 of about 89,157 (306)

In-situ monitoring of sub-surface and internal defects in additive manufacturing: A review

Materials & Design, 2022
Additive Manufacturing (AM), or 3D printing, processes depend on a user-defined set of optimized process parameters to create a component. Monitoring and control of AM processes in real-time can help achieve process stability and repeatability to produce
Youssef AbouelNour, Nikhil Gupta
doaj   +1 more source

Standardised and referenced acoustic monitoring reliably estimates bat fatalities at wind turbines: Comments on ‘Limitations of acoustic monitoring at wind turbines to evaluate fatality risk of bats’

, 2023
Voigt et al. (2021) provide a thorough analysis of the restrictions inherent to the estimation of bat abundance from acoustic surveys, and conclude that limitations of acoustic monitoring impede the reliable evaluation of bat fatalities at wind turbines.
Ghanem, Simon, Kaminsky, Stefan K., Proksch, Jasmin, Robert Brinkmann, Stefan K. Kaminsky, Huemer, Senta, Bontadina, Fabio, Lauper, Mirco, Simon Ghanem, Dietz, Markus, Markus Dietz, Mirco Lauper, Disca, Thierry, Wigbert Schorcht, Kelm, Volker, Volker Kelm, Lintott, Paul, Newman, Christian, Schorcht, Wigbert, Hurst, Johanna, Fabio Bontadina, Brinkmann, Robert, Senta Huemer, Fränzi Korner‐Nievergelt, Roemer, Charlotte, Charlotte Roemer, Nagy, Martina, Korner-Nievergelt, Fränzi, Kévin Barré, Froidevaux, Jérémy S.P., Jérémy S. P. Froidevaux, Barré, Kévin, Froidevaux, Jérémy S. P., Jasmin Proksch, Christian Newman, Johanna Hurst, Trevor Peterson, Thierry Disca, Behr, Oliver, Peterson, Trevor, Martina Nagy, Oliver Behr, Paul Lintott   +42 more
core   +1 more source

Acoustic monitoring of beams. [PDF]

The Journal of the Acoustical Society of America, 1991
The vibrations of a beam can be used to monitor its structural integrity. For example, this technique could be used to monitor the health of a space platform, which is essentially a three-dimensional truss made of several beams. The impulse response of a beam with and without a crack is calculated using a numerical method, to determine the eigenmodes ...
Xiuting Cheng, Robert D. Finch
openaire   +1 more source

Bearing defect diagnosis and acoustic emission. [PDF]

, 2003
Acoustic emission (AE) was originally developed for non-destructive testing of static structures, however, over the years its application has been extended to health monitoring of rotating machines and bearings.
Mba, David, A Morhain, D Mba, Morhain, A.   +3 more
core   +1 more source

On the Importance of Passive Acoustic Monitoring Filters [PDF]

Journal of Marine Science and Engineering, 2021
Passive acoustic monitoring (PAM) is a noninvasive technique to supervise wildlife. Acoustic surveillance is preferable in some situations such as in the case of marine mammals, when the animals spend most of their time underwater, making it hard to obtain their images.
Rafael Aguiar, Gianluca Maguolo, Loris Nanni, Yandre Costa, Carlos Silla   +4 more
openaire   +3 more sources

A new method employing species‐specific thresholding identifies acoustically overlapping bats

Ecosphere, 2022
Passive acoustic detectors are increasingly used for monitoring biodiversity, particularly for echolocating bat species (Microchiroptera). However, identification of calls collected at large scales is hindered by substantial variation within and between ...
Amanda Lo Cascio, Sabine Kasel, Greg Ford   +2 more
doaj   +1 more source

Seeded fault detection on helical gears with acoustic emission [PDF]

, 2009
Acoustic emission (AE) is one of many technologies for health monitoring and diagnosis of rotating machines such as gearboxes. Although significant research has been undertaken in understanding the potential of AE in monitoring gearboxes this has been
Mba, David, Eftekharnejad, Babak
core   +1 more source

Underwater Soundscape Monitoring and Fish Bioacoustics: A Review

Fishes, 2018
Soundscape ecology is a rapidly growing field with approximately 93% of all scientific articles on this topic having been published since 2010 (total about 610 publications since 1985).
Adelaide V. Lindseth, Phillip S. Lobel
doaj   +1 more source

Feasibility of Acoustic Print Head Monitoring for Binder Jetting Processes with Artificial Neural Networks

Applied Sciences, 2021
The clogging of piezoelectric nozzles is a typical problem in various additive binder jetting processes, such as the manufacturing of casting molds. This work aims at print head monitoring in these binder jetting processes.
Philipp Lechner, Philipp Heinle, Christoph Hartmann, Constantin Bauer, Benedikt Kirchebner, Fabian Dobmeier, Wolfram Volk   +6 more
doaj   +1 more source

Prediction of Surface Topography Parameters in Direct Laser Interference Patterning of Stainless Steel Using Infrared Monitoring and Convolutional Neural Networks

Advanced Engineering Materials, EarlyView.
This study presents an infrared monitoring approach for direct laser interference patterning (DLIP) combined with a convolutional neural network (CNN). Thermal emission data captured during structuring are used to predict surface topography parameters.
Lukas Olawsky, Marcelo Sallese, Leander Kläber, Clemens Kuhn, Keming Du, Andrés Fabián Lasagni   +5 more
wiley   +1 more source