Journal ArticleDOI
Beam width estimation of microwave antennas using lock-in infrared thermography
TLDR
In this paper, the beam width of microwave antennas can be easily determined using infrared thermography using a thin absorption screen made up of some carbon loaded polymer is placed in front of a microwave antenna.About:
This article is published in Infrared Physics & Technology.The article was published on 2015-09-01. It has received 6 citations till now. The article focuses on the topics: Beam diameter & Thermography.read more
Citations
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Detection and characterization of defects in composite materials using thermography
TL;DR: In this paper, a numeric model was developed to predict the result of an infrared thermal test in carbon fiber reinforced polymers with structural defects, and the model was validated with experimental tests, consisting of samples made of poly-methyl-meth-acrylate.
Journal ArticleDOI
Non-Destructive Infrared Lock-in Thermal Tests: Update on the Current Defect Detectability
A. Silva,A. Silva,A. Silva,Mário Vaz,Mário Vaz,Sofia Ribeirinho Leite,Sofia Ribeirinho Leite,Joaquim Mendes +7 more
TL;DR: In this article, the influence of the parameters of LTT, such as defect geometry, cycle period, and number of cycles, interpolation method, and the type of image to identify the sensitivity of the LTT (parameter c).
Journal ArticleDOI
Lock-in thermal test with corrected optical stimulation
A. Silva,A. Silva,A. Silva,Mário Vaz,Mário Vaz,Sofia Leite,Sofia Leite,Joaquim Gabriel,Joaquim Gabriel +8 more
TL;DR: In this paper, the authors compare the performance of active infrared thermal testing (AIRTT) and non-destructive testing (NDT) techniques and conclude that AIRTT is the most flexible and promising.
Journal ArticleDOI
IR and Metasurface based mm-Wave Camera
TL;DR: In this article, a metasurface consisting of thermally isolated elements of low mass and highly emissive material for maximal IR conversion of the incident wave is used to measure low power electromagnetic fields from mm-wave devices.
Journal ArticleDOI
Modelling and Analysis of Power Distribution of Electromagnetic Waves on Plane Surfaces Using Lock-in IR Thermography
TL;DR: In this article, a thin screen made of carbon fiber reinforced polymers is placed in front of a microwave source, where the electromagnetic waves impinging on the screen are partially absorbed, resulting in temperature rise of the screen.
References
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Journal ArticleDOI
Infrared Measurements of Scattering and Electromagnetic Penetration through Apertures
Ronald M. Sega,John D. Norgard +1 more
TL;DR: In this paper, an infrared detection technique is used to measure the electromagnetic fields near apertures of planar and cylindrical structures, and the results are compared with theoretical solutions where applicable.
Journal ArticleDOI
An Infrared Measurement Technique for the Assessment of Electromagnetic Coupling
Ronald M. Sega,John D. Norgard +1 more
TL;DR: A non-destructive, non-perturbing infrared measurement technique is under development to observe the effects of electromagnetic coupling of energy to the interior of complicated geometrical structures as discussed by the authors.
Journal ArticleDOI
Quantitative images of antenna patterns using infrared thermography and microwave holography
TL;DR: The phase‐retrieval results are presented and compared with the known results for this antenna, as measured on the near‐field range at the National Institute of Technology and Standards (NIST) using standard hard‐wired probes.
Proceedings ArticleDOI
Phase measurements of electromagnetic fields using infrared imaging techniques and microwave holography
J. E. Will,John D. Norgard,Carl F. Stubenrauch,Katie MacReynolds,Michael F. Seifert,Ronald M. Sega +5 more
TL;DR: In this paper, the authors discuss the progress made to data in determining both magnitude and phase information from IR imaging data (IR thermograms); thus, enabling near-field and far-field measurements of antenna patterns using IR thermal imaging techniques.
Proceedings ArticleDOI
Electromagnetic magnitude and phase measurements from infrared thermograms
TL;DR: A technique for determining the magnitude and phase of a radiating electromagnetic field from measurements taken using an Infrared (IR) camera and the PTP technique allows recovery of the phase by combining magnitude-only measurements made on two planes, both in the radiating near field of the antenna under test.