Infrared camera mounted on a fast trajectory tracker system was used to capture infrared imagery of a model space probe travelling at supersonic velocities. In addition to the laminar-to-turbulent transition boundary, the infrared camera was able to detect shock waves and present a time dependent view of the flow field. Readily available infrared technology has the capability to provide deta...
Scientists have developed several theoretical models to better understand and predict various aspects of wildfire behaviour. However, the lack of experimental data from real wildfire renders the validation of the models difficult and thus limits their applicability. More validation data would enable a better characterization of the valid boundaries within which the models can be applied. The...
Methane (CH4) and carbon dioxide (CO2) are landfill gases (LFG) originating from the decomposition of organic material as encountered in landfill areas. Both gases are considered greenhouse gases due to their high propensity for absorbing and emitting infrared radiation. For this reason, landfill installations are often equipped with wells and pumping systems to collect these LFGs. Depending...
Wildfire spreads by pre-heating unburnt fuels (vegetation) using a combination of radiative and convective heating processes. In rapidly spreading grass or stubble wheat fuels, turbulent wind flow aids to intermittently convect the heat produced by combustion onto the unburnt fuels leading to its ignition and fire spread. In a way, the fire is sustaining its motion, but the role of atmospher...
The extraction of both velocity and temperature of particles during the cold spray (CS) process using a high-speed, high-definition infrared (IR) camera was demonstrated by Nastic, A. & Jodoin, B.1. Following the success of this project, Telops worked with the University of Ottawa to address the challenges of measuring the speeds and temperatures of smaller cold spray particles (as small...
The measurement of physical properties of expanding gases in the infrared region following a high-explosive detonation requires cameras having both high framerate and fine spectral resolution. Moreover, an accurate gas model is required to adequately explain and quantify the rapidly-evolving events based on properly-interpreted gas emissivity signatures. To achieve this goal, a Telops MW Fas...
In this study, we investigated the assessment of the damaged area on composites ballistic plates subjected to high velocity impact. The active pulsed thermography technique was used for performing post-mortem analysis of the impacted specimens. Quantitative analysis of the damaged areas shows consistent results with the size of the projectile suggesting high precision of the quantification d...
Safety is a major concern for oil and gas companies as chemicals encountered in their installations can be toxic or presentSafety is a major concern for oil and gas companies as chemicals encountered in their installations can be toxic or presenta high explosion potential. A reliable gas identification and quantification imaging system represents an upgrade to thecurrent gas detection techno...
Gas leaks present obvious health, safety and environmental risks. In oil and gas companies for instance, constant monitoring is crucial to preserve on-site personnel security and to prevent damage to the installations. The need for a reliable and cost-efficient gas detection system is of prime importance especially when security-threatening situations like gas leaks and emissions occur. Prec...
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...
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 ...
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.
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...
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...
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...