Thermal near infrared monitoring system for electron beam melting with emissivity tracking

Integration of a Thermal Imaging Feedback Control System in Electron Beam Melting

A thermal imaging system using an infrared (IR) camera was incorporated in the fabrication process of an Arcam A2 Electron Beam Melting system to provide layer-by-layer feedback and ensure quality and defect free products. Using the IR camera, build chamber surface temperature profiles were imaged and analyzed, providing information used to modify build settings for the next build layer. Indivi...

A Biocompatible Near-Infrared 3D Tracking System*

A fundamental challenge in soft-tissue surgery is that target tissue moves and deforms, becomes occluded by blood or other tissue, and is difficult to differentiate from surrounding tissue. We developed small biocompatible near-infrared fluorescent (NIRF) markers with a novel fused plenoptic and NIR camera tracking system, enabling three-dimensional tracking of tools and target tissue while ove...

Near-Infrared Spectroscopy System for Monitoring Peripheral Vascular Disease

In this project, a non-invasive near-infrared spectroscopy system is developed. It is tailored to monitor tissue oxygenation and total hemoglobin concentration in the limbs. The system would be especially useful in diabetic patients where blood circulation is poor in the extremities, and oxygenation is lower limiting the ability of the tissue to have proper function. It is crucial to monitor hi...

Recovering Surface Temperature and Emissivity from Thermal Infrared Multispectral Data

In 1992 Thermal Infrared Multispectral Scanner (TIMS) ferent lines on the same day. However, there are differdata were acquired from the NASA C-130 aircraft over ences when the same area is seen on the two days espethe Sahelian region of West Africa as part of the Hydrocially for the low emissivity values. Some of these logical and Atmospheric Pilot Experiment in the Sahel differences may be du...

Monitoring Cellular Metabolism with Near-infrared Spectroscopy