An analysis of factors associated with graft topographic outcomes after deep anterior lamellar keratoplasty
Sign Up to like & getrecommendations! Published in 2020 at "International Ophthalmology"
DOI: 10.1007/s10792-020-01424-2
Abstract: Purpose To investigate the correlations between preoperative, operative, and postoperative factors and corneal graft topographic parameters after deep anterior lamellar keratoplasty (DALK) performed in keratoconus-affected eyes. Methods This prospective, interventional study enrolled 44 eyes. Graft… read more here.
Keywords: graft topographic; graft; donor; roundness ... See more keywords
DEM study on the effect of roundness on the shear behaviour of granular materials
Sign Up to like & getrecommendations! Published in 2020 at "Computers and Geotechnics"
DOI: 10.1016/j.compgeo.2020.103457
Abstract: Abstract This report investigated the effects of irregular particles on macroscopic and microscopic behaviour under triaxial compression tests for a range of various roundnesses. A multi-sphere method was employed to model the three-dimensional irregular particles… read more here.
Keywords: dem study; roundness; shear behaviour; study effect ... See more keywords
Nonlinear buckling strength of out-of-roundness pressure hull
Sign Up to like & getrecommendations! Published in 2018 at "Thin-walled Structures"
DOI: 10.1016/j.tws.2018.06.009
Abstract: Abstract This study employed experiments and numerical simulations to investigate the impact of pressure hulls’ degree of out-of-roundness on their buckling strength and buckling modes. In addition, post-buckling simulations were conducted to analyze the post-buckling… read more here.
Keywords: nonlinear buckling; buckling strength; roundness; pressure hull ... See more keywords
Effect of positional errors on the accuracy of multi-probe roundness measurement methods
Sign Up to like & getrecommendations! Published in 2020 at "Mechanical Systems and Signal Processing"
DOI: 10.1016/j.ymssp.2020.106883
Abstract: Abstract Multi-probe roundness measurement methods can be used to measure cross section roundness profiles and dynamic behaviour of large flexible rotors such as paper machine rolls. Other roundness measurement methods are not suitable for such… read more here.
Keywords: roundness measurement; roundness; positional errors; multi probe ... See more keywords
New Radius and Roundness Measurement for Microspheres Using a High-Precision Run-Out Error Separation Method
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Instrumentation and Measurement"
DOI: 10.1109/tim.2022.3179508
Abstract: Roundness is a kind of form error in geometrical measurement in laboratory and industry and contributes significantly to the uncertainty of the measurement instruments using precision spheres, especially microspheres. A new radius and roundness measurement… read more here.
Keywords: tex math; inline formula; roundness; measurement ... See more keywords
Measurement Uncertainty Analysis of a Stitching Linear-Scan Method for the Evaluation of Roundness of Small Cylinders
Sign Up to like & getrecommendations! Published in 2020 at "Applied Sciences"
DOI: 10.3390/app10144750
Abstract: Influences of angular misalignments of a small cylinder on its roundness measurement by the method referred to as the stitching linear scan method are theoretically investigated. To compensate for the influences, a technique for measuring… read more here.
Keywords: measurement uncertainty; scan method; method; roundness ... See more keywords
Taguchi Optimization of Roundness and Concentricity of a Plastic Injection Molded Barrel of a Telecentric Lens
Sign Up to like & getrecommendations! Published in 2021 at "Polymers"
DOI: 10.3390/polym13193419
Abstract: Plastic is an attractive material for the fabrication of tubular optical instruments due to its light weight, high strength, and ease of processing. However, for plastic components fabricated using the injection molding technique, roundness and… read more here.
Keywords: barrel; telecentric lens; roundness; injection ... See more keywords