Results 31 to 40 of about 5,339,338 (266)
IEEE Open Journal of Instrumentation and Measurementadditive manufacturing (AM) or 3-D printing is the process of rapidly manufacturing complex parts that are used in a wide range of applications encompassing nearly unlimited types of critical and noncritical components.
Reza Zoughi +2 more
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Numerical study of beam shape adaptation by anisotropic disk covering transducer or metamaterial
Acta Acustica, 2023 Metamaterials are intensely explored for their capabilities to modify sound beams. In addition to frequency filtering, acoustic lenses offer intriguing possibilities for shaping sound beams.
Declercq Nico F.
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IEEE Open Journal of Instrumentation and MeasurementThis study presents the results of using a millimeter-wave reflectometer system, operating at 150 GHz, for demonstrating the basic efficacy of measuring electromagnetic scattering of metal powder used in laser powder bed fusion (LPBF) additive ...
Farzaneh Ahmadi, Reza Zoughi
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AIP Advances, 2021 This paper proposes a novel design for a hermetically sealable device, consisting of charged linear and nonlinear membranes driven in the gigahertz range in vacuum setting, as a source of antibunched single phonons.
Jayant K. Nema +3 more
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Passive Thermography Measurement of Damage Depth During Composites Load Testing
Frontiers in Mechanical Engineering, 2021 Passive thermography is commonly used for composites load testing to detect damage formation as a function of the applied load. The advantages of passive thermography are real time implementation, large area coverage, and noncontact measurement.
Joseph N. Zalameda, William P. Winfree
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Lensing in the Ultrasonic Domain using Negative Refraction Induced by Material Contrast
Scientific Reports, 2019 The focusing of ultrasound using topographic lenses, typically made of plates with step changes that cause an interaction between forward- and backward-propagating guided waves, has been widely studied in recent years.
C. T. Manjunath, Prabhu Rajagopal
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Vibration-Based Approach to Measure Rail Stress: Modeling and First Field Test
Sensors, 2022 This paper describes a non-invasive inspection technique for the estimation of longitudinal stress in continuous welded rails (CWR) to infer the rail neutral temperature (RNT), i.e., the temperature at which the net longitudinal force in the rail is zero.
Matthew Belding +2 more
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Applied Sciences, 2022 Defects are a leading issue for the rejection of parts manufactured through the Directed Energy Deposition (DED) Additive Manufacturing (AM) process. In an attempt to illuminate and advance in situ quality monitoring and control of workpieces, we present
Steven Hespeler +4 more
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FEBS Open Bio, EarlyView.NMR metabolomics revealed concentration‐dependent metabolic perturbations in HepG2 cells exposed to H2O2. Rifampicin pretreatment enhanced metabolic competence, attenuated toxin‐induced alterations and produced metabolite profiles more consistent with human liver physiology, supporting the use of CYP450‐induced HepG2 models for improved in vitro ...
Maren Jinks +4 more
wiley +1 more source
Nondestructive Evaluation of Special Defects Based on Ultrasound Metasurface
Frontiers in Materials, 2022 We demonstrate the nondestructive evaluation by means of directional ultrasound emitted from a planar metasurface. The ultrasound metasurface is designed to generate the collimated and directional ultrasound efficiently in a planar configuration, which ...
Hualiang Zhao +6 more
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