29/03/2024
Contribution of High-Speed IR Thermography for damage monitoring in carbon fiber reinforced polymer during dynamic mechanical testsIn order to better understand the dynamic behavior of CFRP and to improve numerical modeling tools for these materials, it is essential to better understand the effects of strain rate on damage initiation and growth. Unlike low loading rate mechanical tests, the experimental setup for intermediate strain rate tests is classically based on servo-hydraulic actuators. The higher the loading rate...
29/03/2024
Things to Consider When Purchasing an Infrared Imaging System-Part IIn Part 1 of this webinar series, Telops Field Application Engineer Joseph Carrock is discussing basic camera parameters including spatial resolution, radiometric accuracy, and data acquisition speed (framerate and exposure time). Discussion is focused on the tradeoffs associated with basic parameter optimization and representative, capability-driven systems from Telops thermal infrared imag...
29/03/2024
Things to Consider When Purchasing an Infrared Imaging System-Part IIIn Part 2, we turn our focus to the thermal and spectral properties of the scene or target of interest, and how these properties can affect infrared imaging system specification. A discussion of scene thermal properties is addressing thermal contrast, spectral band selection, and calibrated temperature ranges. Additionally, target spectral properties to consider is being highlighted, includi...
29/03/2024
Methane Airborne Detection Solution for the Oil & Gas IndustryMethane emissions across the oil and gas value chain represent a significant contribution to climate change.
With countless production sites and thousands of kilometers of natural gas transmission and gathering pipelines throughout the world, there is a need to quickly and efficiently survey these installations to detect and identify potential leaks. In this webinar, we present the Tel...
29/03/2024
Thermal Infrared Hyperspectral Imaging for Methane Detection at Landfills - WebinarMethane emissions from biomass degradation at landfills are a significant contributor to environmental pollution and anthropogenic climate change. Methane is among the most infrared-active naturally occurring molecules and represents an 80X increase in atmospheric warming potency when compared to CO2. The need for reliable and cost-efficient methane detection technology is critical to mitiga...
29/03/2024
The Advantage of High Spatial Resolution in Thermal ImagingTelops Scientific Product Line Manager Ben Saute describes the fundamentals and benefits of high spatial resolution imaging and introduces the newly redesigned FAST HD series representing the cutting-edge in high-resolution scientific thermal imaging.
29/03/2024
Object Tracking by Hierarchical Decomposition of Hyperspectral Video Sequences: Application to Chemical Gas Plume TrackingIt is now possible to collect hyperspectral video sequences at a near real-time frame rate. The wealth of spectral, spatial, and temporal information of those sequences is appealing for various applications, but classical video processing techniques must be adapted to handle the high dimensionality and huge size of the data to process. In this paper, we introduce a novel method based on the ...
29/03/2024
Comparison Assessment of Low Rank Sparse-PCA Based – ClusteringThe developments in hyperspectral technology in different applications are known in many fields particularly in remote sensing, airborne imagery, mineral identi- fication and core logging. The automatic mineral identification system provides considerable assistance in geology to identify mineral automatically. Here, the proposed approach addresses an automated system for mineral (i.e. pyrope...
29/03/2024
Continuum Removal for Ground Based LWIR Hyperspectral Infrared Imagery Applying Non-Negative Matrix FactorizationContinuum removal is vital in hyperspectral image analysis. It enables data to be used for any application and usually requires approximations or assumptions to be made. One of these approximations is related to the calculation of the spectra of the background’s blackbody temperature. Here, we present a new method to calculate the continuum removal process. The proposed method eliminates the...
29/03/2024
Thermal Infrared Hyperspectral Imaging for Mineralogy Mapping of a Mine FaceRemote sensing systems are largely used in geology for regional mapping of mineralogy and lithology mainly from airborne or spaceborne platforms. Earth observers such as Landsat, ASTER or SPOT are equipped with multispectral sensors, but suffer from relatively poor spectral resolution. By comparison, the existing airborne and spaceborne hyperspectral systems are capable of acquiring imagery ...
29/03/2024
New Zealand field-scale fire experiments to test convective heat transfer in wildland firesWildfire physics has traditionally been studied through intensive modelling that requires numerous assumptions of combustion and heat transfer (Sullivan 2009) adapted from established structure-fire engineering relations. Renewed emphasis in experimental research has caused rethinking of some of the most basic concepts in wildland fuel particle ignition and flame spread. New findings from la...
29/03/2024
Rate dependency and ply thickness influence on transverse cracking evolution in cross-ply laminatesF. Coussa, J. Berthe, M. Ragonet.
In this study, the rate dependency of transverse cracking evolution in cross-ply laminates is investigated for several 90° plies thicknesses. The crack detection methodology is based on a recently proposed protocol relying on the use of infrared thermography. A new analysis methodology is proposed to make it more robust and to directly link the spatial...
29/03/2024
Using Longwave Infrared Hyperspectral Imaging for a Quantitative Atmospheric Tracer Monitoring in Outdoor EnvironmentsEitan Hirsch, Eyal Agassi, Alon Manor.
Quantitative real-time retrieval of concentration-lengths (CL) through gaseous plumes is an important tool for environmental monitoring, enabling remote monitoring of emissions from industrial facilities and risk assessment
in scenarios of toxic gas releases. The adoption of LWIR (Long Wave Infra-Red) hyperspectral imaging as a leading techniqu...
29/03/2024
Status and Developments in Geological Remote SensingR.D. Hewson et al.
Recent improvements and availability of optical to infrared to thermal satellite and airborne sensors opens up the opportunity for advancing surface mineralogy and geological mapping. Such mapping may include the identification of alteration zones for exploration activities or monitoring ore quality and inventory within open cuts. Remote sensing technology is also on...
29/03/2024
Thermomechanical Behavior of Steels in Tension Studied with Synchronized Full-Field Deformation and Temperature MeasurementsG.C. Soares, N.I. Vázquez-Fernández, M. Hokka
Despite tensile testing being commonly used for investigating the mechanical behavior of materials, the occurrence of heterogeneous strain and increasing temperature at high strain rates make the experiment much more complex. This work presents a method integrating synchronous full-field stereo Digital Image Correlation (DIC) and Infrared T...