Abstract In metal additive manufacturing, moving heat sources cause spatial and time-dependent variations of temperature strain that can lead to part distortions. Distortion prediction optimized deposition parameters increase the dimensional accuracy generated components. this study, an analytical approach for modeling effect clad height substrate thickness is experimentally validated. Addition...

PurposeChronic lung allograft dysfunction (CLAD) is the leading long-term cause of mortality after transplant. The microbiome in healthy transplant recipients predicts subsequent development CLAD, but whether bacteria differ between CLAD and allografts unknown.MethodsWe performed a case control study using biorepository acellular bronchoalveolar lavage (BAL) fluid. Controls were specimens colle...

Laser cladding is a well-established process to apply coatings on metals. However, on substrates considerably thinner than 1 mm it is only rarely described in the literature. In this work 200 µm thin sheets of nickel-based superalloy 718 are coated with a powder of a cobalt-based alloy, Co-28Cr-9W-1.5Si, by laser cladding. The process window is very narrow, therefore, a precisely controlled Yb ...

Missing pellet surface (MPS) defects are local geometric defects in nuclear fuel pellets that result from pellet mishandling or manufacturing. The presence of MPS defects can cause clad stress concentrations that are substantial enough to produce through-wall cladding failure for certain combinations of fuel burnup, and reactor power level or power change. Consequently, the impact of potential ...

We developed a new holmium-doped triple-clad fiber (Ho-3CF), reducing the clad diameter to improve overlap between pump and doped-core, holmium concentration reduce influence of ion clustering on laser efficiency. illustrate here performance this in oscillator configuration. The emission is centered at 2.12 m by Bragg grating, active pumped 1.94 m thulium-doped laser. slope effici...

Chronic lung allograft dysfunction (CLAD) remains the major barrier to long-term success after lung transplantation. This report compares gross and microscopic features of lungs removed from patients receiving a redo-transplant as treatment for CLAD. Lungs donated by patients with either the bronchiolitis obliterans syndrome (BOS) or restrictive allograft syndrome (RAS) phenotype of CLAD and ap...

This paper presents a measurement method for determining effective conductivity of copper-clad dielectric laminate substrates in the millimeter-wave region. The conductivity is indirectly evaluated from measured resonant frequencies and unloaded Q values of a number of Whispering Gallery modes excited in a circular disk sample, which consists of a copper-clad dielectric substrate with a large d...

Powell's (1984, Journal of Econometrics 25, 303}325) censored least absolute deviations (CLAD) estimator for the censored linear regression model has been regarded as a desirable alternative to maximum likelihood estimation methods due to its robustness to conditional heteroskedasticity and distributional misspeci"cation of the error term. However, the CLAD estimation procedure has failed in ce...

A detailed computational study is presented for the radial-axial modes-both leaky and nonleaky--in an infinitely clad isotropic rods. The complex phase velocities of leaky modes are located using an application of the argument principle. Particle orbits are determined, and leaky modes are shown to have an asymptotic leakage angle away from the interface. By using the homotopic methods of varyin...