Results 41 to 50 of about 202,741 (162)
A Review on Low-Cost Microwave Doppler Radar Systems for Structural Health Monitoring
Sensors, 2021 Portable, low-cost, microwave radars have attracted researchers’ attention for being an alternative noncontact solution for structural condition monitoring.
Davi V. Q. Rodrigues, Changzhi Li
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Characterisation of crack tip fields under non-uniform fatigue loading
Fracture and Structural Integrity, 2013 The paper analyses previously reported work, which uses digital image correlation to measure fatigue crack closure. As well as determining crack opening loads, the information on crack shape may be used to estimate the stress intensity factor, as well as
D. Nowell, M.E. Kartal, P.F.P. de Matos
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Bridge Dynamic Displacement Monitoring Using Geodetic Measurement
Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca: Horticulture, 2019 The paper analyzes the possibility to define a dynamic model associated to a bridge using the results of geodetic measurements made for displacement monitoring using modern calculation models.
Alexandra Nadia CÎRDEI, Dumitru ONOSE
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SensorsA light and displacement-compensation-based iPPG algorithm is proposed in this paper for heart-rate measurement in complex detection conditions. Two compensation sub-algorithms, including light compensation and displacement compensation, are designed and
Shubo Bi, Haipeng Wang, Shuaishuai Zhang
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Laser Measurement of Building Vibration and Displacement
Shock and Vibration, 2000 This paper considers four laser systems used by the Building Research Establishment (BRE) to investigate the behaviour of structures. Lasers enable remote measurements of vibration and displacement to be taken where access to a structure is difficult or ...
A.J. Bougard, B.R. Ellis
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BMC Urology, 2019 Background There is a change in the position of the remaining anatomical structures of the lower urinary tract system following radical prostatectomy. The aims of this investigation were to describe three novel methods used to measure the displacement of
Hong Koo Ha +6 more
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Metasurface-enabled achromatic high-precision optical displacement sensor
APL PhotonicsOptical displacement sensors are widely employed in various fields due to their broad measurement range, high resolution, and exceptional precision. However, their sensitivity and measurement accuracy are inherently limited by the frequency stability of ...
Zhouxin Liang +7 more
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Meta-device for sensing subwavelength lateral displacement
Light: Science & ApplicationsAccurate transverse displacement measurement is essential for precise mask-to-wafer positioning in lithography. While lateral displacement metrology has achieved nanometer-level precision, the limitations imposed by coherent state and grating challenge ...
Shufan Chen +7 more
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High-precision non-contact probes based on spectral confocal technology
Journal of Measurement Science and Instrumentation, 2023 To solve the problems of small measurement range and poor accuracy of the spectral confocal non-contact probes, a four-piece lens group with a large measurement range is designed.
LI Haiteng, LI Xinghua
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Measurement Science Review, 2016 It has been recognized that that the design and prescription of Energy Storing and Returning prosthetic running feet are not well understood and that further information on their performance would be beneficial to increase this understanding.
Hawkins James +3 more
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