Essays about: "Surface roughness parameters"

Showing result 21 - 25 of 69 essays containing the words Surface roughness parameters.

1. 21. Additive manufacturing and radio frequency filters : A case study on 3D-printing processes, postprocessing and silver coating methods

   University essay from KTH/Industriell produktion

   Author : Ana García-Verdugo Zuil; Amanda Herrero Martín; [2020]
   Keywords : Additive manufacturing; radio-frequency filters; post-processing; silver coating; surface roughness; Multi Jet Fusion MJF ; Selective Laser Melting SLM ; Tillsatsstillverkning; radiofrekvensfilter; efterbehandling; silverbeläggning; ytojämnhet; Multi Jet Fusion MJF ; Selective Laser Melting SLM ;

   Abstract : Additive manufacturing (AM) is an attractive way to shorten development time, reduce product weight and allow the manufacturing of more complex products than by conventional manufacturing processes. The problem arises when the previous traditional manufacturing requirements need to be fulfilled by AM as well as the volume production capability. READ MORE

3. 22. EB-PBF additive manufacturing of Alloy 718 : Effect of shot peening on surface characteristics and high temperature corrosion performance

   University essay from Högskolan Väst/Avdelningen för Industriell ekonomi, Elektro- och Maskinteknik

   Author : Venkataramanan Mohandass; [2019]
   Keywords : Alloy 718; additive manufacturing; electron beam-powder bed fusion; surface engineering; shot peening; high temperature corrosion;

   Abstract : There is an upsurge of research interest on Alloy 718 additively manufactured (AM) by electron beam powder bed fusion (EB-PBF) technique in aero and land-based gas turbine engines. However, the surface quality of the manufactured components has always been a major challenge. READ MORE

4. 23. Prototype manufacturing of microwave components using plastic 3D printing

   University essay from Uppsala universitet/Fasta tillståndets elektronik

   Author : Björn Malmquist; [2019]
   Keywords : ;

   Abstract : The ability to easily customize and produce specialized MW-components for research and industry is a real challenge and the need is identified, as standardized parts have limited use and can limit design freedom. This study aims at exploring if there are simple ways to manufacture rectangular X-band waveguides with operating frequency of 8-12GHz with novel polymer additive manufacturing and chemical metal deposition that can match Computer Numerical Control (CNC) manufactured rectangular metal waveguides in performance. READ MORE

5. 24. An Investigation of the Adhesive Interaction between Polyethylene and Silicone with DMA and AFM

   University essay from Lunds universitet/Centrum för analys och syntes

   Author : Joel Falk; [2019]
   Keywords : Atomic Force Microscope; Adhesion; Characterization; Dynamic Mechanical Analysis; Injection Molding; Polyethylene; Polymer; Silicone; Test method development; Materials chemistry; Materialkemi; Technology and Engineering;

   Abstract : Stickiness between materials can be a challening task when dealing with the complex interactions and processes related to packaging engineering. Part of the problem is that many factors like temperature, pressure, surface treatment as well as surface roughness all could play a part in contributing to the stickiness between materials. READ MORE

6. 25. Model of Thermal EHL Based on Navier-Stokes Equations : Effects of Asperities and Extreme Loads

   University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Author : Marko Tošić; [2019]
   Keywords : ;

   Abstract : A common approach in numerical studies of elastohydrodynamic lubrication (EHL) is based on solving the Reynolds equation that governs pressure distribution in thin lubricant films. The Reynolds equation is derived from the Navier-Stokes equations by taking assumptions that are considered valid when the thickness of the lubricant film is much smaller than its length. READ MORE