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28/03/2024

Thermal Infrared Hyperspectral Imaging for the Detection, Identification, and Quantification of Industrial Stack Gas Emissions

Thermal infrared hyperspectral imaging is well suited for the detection, identification, and quantification of industrial stack gas emissions. This application note describes a measurement campaign performed at the Port of Rotterdam with the Telops Hyper-Cam, a commercial high-performance, FTIR-based hyperspectral imaging instrument. Principles of gas detection, quantification, and identific...

Application Note 448.5 KB pdf

28/03/2024

Quantification of CO2 Passive Degassing at Sulphur Banks from Kilauea Volcano using thermal Infrared Multispectral Imaging

Volcanic carbon dioxide (CO2) emission rates play an important role for assessing volcanic hazards and for constraining the role of magma degassing in the biogeochemical cycle of carbon. Quantification of CO2 emission rates from volcanoes remain challenging, mainly due to the difficulty of measuring volcanic CO2 against the high level of CO2 in the atmosphere. Thermal Infrared (TIR) imaging ...

Application Note 762.78 KB pdf

28/03/2024

Multispectral Infrared Imaging for In-Process Monitoring of Welding Operations

Thermal infrared imaging technology is well suited to monitoring the spatially-varying temperature gradients induced in fabricated metal parts during high-temperature welding processes. This application note demonstrates how Telops multispectral thermal infrared cameras can be used to monitor important welding process characteristics like melt pool geometry and local heating and cooling gradients.

Application Note 787.95 KB pdf

28/03/2024

Absolute Temperature and Emissivity Calculation Using a Multispectral Infrared Camera and n-Color TES Image Processing

Over the past few years, two-color pyrometry has proven to be a fast and reliable non-invasive method to accurately determine the temperature of materials by overcoming emissivity issues usually encountered by thermal infrared cameras. However, the need for multiple independent cameras makes this method expensive to implement. In this work, a single Telops MS M100k equipped with a fast-rotat...

Application Note 485.41 KB pdf

28/03/2024

High-Speed Infrared Imaging of Crack and Hot-Spot Formation in a Graphite-Fiber and Epoxy Composite Under Stress

The enormous progress made in the three last decades in high-speed thermal imaging have given rise to a wide variety of applications, of which material testing is maybe one of the most prominent. Split-Hopkinson bar experiments can especially benefit from the development of high-speed and high-resolution thermal infrared imaging. When materials are subjected to mechanical stress, rapid chang...

Application Note 485.41 KB pdf

28/03/2024

High-Speed Infrared Imaging of Metal Parts Fabrication by Additive Manufacturing

Additive manufacturing, also known as 3D printing, is considered by many to be the biggest industrial revolution since the Internet. This method allows rapid fabrication of metal pieces with various compositions, shapes and sizes. However, the extremely high thermal gradients involved in this fabrication process can induce stress and deformation in the materials. In an effort to better under...

Application Note 617.82 KB pdf

28/03/2024

Volcanic Eruption Observations from an Elevated Point of Stromboli Using Thermal Infrared Hyperspectral Imaging

The Stromboli volcano is well known for its periodic eruptions of small magnitude containing various proportions of ash, lava and gases. Imaging was carried out at a relatively high spectral and spatial resolution before and during eruptions from the North-East crater. Both sulfur dioxide (SO2) and silicon tetrafluoride (SiF4) could be successfully identified within the volcano’s plume from ...

Application Note 590.9 KB pdf

28/03/2024

High-Speed Infrared Imaging of a Split-Hopkinson Pressure Bar Experiment

In order to illustrate this concept, high-speed infrared imaging was carried out at 13 000 frames per second during a split-Hopkinson pressure bar experiment on a polymer sample at the Structural Impact Laboratory (SIMLab) of the Norwegian University of Science and Technology. The results illustrate how high-speed infrared imaging can provide detailed information about the thermal properties...

Application Note 592.99 KB pdf

28/03/2024

Direct Imaging of Shale Gas Leaks Using Passive Thermal Infrared Hyperspectral Imaging

There are many types of natural gas fields including shale formations that are common especially in the St-Lawrence Valley (Canada). Since methane (CH4), the major component of shale gas, is odorless, colorless and highly flammable, in addition to being a greenhouse gas, methane emanations and/or leaks are important to consider for both safety and environmental reasons.

Telops recently...

Application Note 882.93 KB pdf

26/03/2019

Application Guide for Screen-Grid

TP-122 Power Tube Application Note: Screen-Grid Current, Loading, and Bleeder Considerations

Application Note 42.08 KB pdf