A contactless temperature measurement system is presented based on a hyperspectral line camera that captures the spectra in the visible and near infrared (VNIR) region of a large set of closely spaced points. The measured spectra are used in a nonlinear least squares optimization routine to calculate a one-dimensional temperature profile with high spatial resolution. Measurements of a liquid me...

The methodology in interventional cardiology has historically evolved from diagnostic coronary angiography to balloon angioplasty, to the use of bare metal stents (BmSs), to their refinement to drug-eluting stents with a durable polymer, and is now on the verge of drug-eluting stents with further developed drug delivery approaches such as reservoir technology and the use of bioresorbable polyme...

Most control methods in additive manufacturing (AM) are mainly based on temperature or high resolution imaging. However, no methods are known to monitor the quality of AM in realtime. Our approach is very innovative for the quality monitoring of the process online by combining acoustic emission (AE) with machine learning. The machine parameters were changed when processing a steel 316L to get t...

Sol-gel titania films were deposited on 316L stainless steel using titanium isopropoxide as a chemical precursor. Dipcoating was performed at withdrawal speeds of 6 mm/min, 30 mm/min, and 60 mm/min. Deposited gel films were heat treated in air at 80 ̊C, 100 ̊C, 300 ̊C, and 400 ̊C. The structural evolution of the coatings was evaluated by infrared reflection-absorption spectroscopy. The influence of...

Fatigue and fracture mechanisms have been studied in a steel-based metal matrix composite (MMC), comprising a 316L austenitic matrix reinforced with 25 wt% particulate titanium diboride (TiB2). The fracture toughness was determined in the as-HIPped condition as being slightly below 30 MPa√m. Fatigue crack growth rates have been determined, and corrected for the effects of crack closure. The fra...

The effect of nitrogen-based ion implantation on the characteristics 316l stainless steel for implant materials has been performed. This study aims to determine variations in energy surface mechanical properties, density, and corrosion resistance 316L steel. plate was implanted with nitrogen ions an optimum dose 5 x 1016 ions/cm2 various energies 70, 75, 80, 85, 90 keV. samples were then charac...