Abstract: Crack gages are sensors designed to monitor crack initiation and growth in engineering structures by alteration of electrical conductance. Present gages involve a thick (5 μm) metal foil on an ...

Abstract: A large number (150) tungsten carbide (6 weight percent) cutting edges were used to make single cuts in AISI 4340 steel (HB = 235 kg/mm2 ) at a cutting speed of 200 fpm (61 m/min) and a ...

Abstract: Tool fracture probability for 6 weight percent cobalt tungsten carbide tools turning AISI 4340 steel (HB = 235 kg/mm2 ) at 200 fpm was found to be small at the beginning of a cut or during ...

Abstract: The problem of predicting deposition rates and film thickness variation is relevant to many high-vacuum physical vapor deposition (PVD) processes. Analytical methods for modeling the molecular ...

Abstract: Cadmium telluride (CdTe) thin film photovoltaic devices fabricated in a-line process developed at Colorado State University (CSU) have shown stability during long-term (over a 5 year period) ...

Abstract: In-line manufactured CdTe thin film photovoltaic devices were evaluated for their performance with respect to power conversion efficiency and reliability (stability). A National Renewable Energy ...

Abstract: Wear tests of ferrite (pure α-Fe) and austenite (AISI 304 stainless steel) implanted with nitrogen have been conducted using a unique oscillating pin-on-disk test machine. The results show that ...

Abstract: The effects of implanted nitrogen ion dose and target surface temperature during implantation on the wear characteristics of iron (ferrite) and 304 stainless steel (austenite) have been studied ...