Sökning: "Hardness testing"

Visar resultat 1 - 5 av 56 avhandlingar innehållade orden Hardness testing.

1. 1. Machinability Testing of Materials in Metal Cutting with Focus on Compacted Graphite Iron and Cutting Fluids

   Författare :Varun Nayyar; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; UTS.; Boring; Drilling; Cutting Fluid; Turning; Milling; Force; Wear; Force; Torque; Compressed air; CGI; Hardness; Tool Life; Material Properties; Chip Microstructure; Tapping;

   Sammanfattning : Due to the stringent demands for lower emission from trucks require better mechanical properties of the material to be used in the engines. Better efficiency necessitates higher peak pressure in the engines and for traditionally used material, Flake Graphite Iron (FGI), the mechanical properties starts to reach the limit of what the material can withstand. LÄS MER

3. 2. Performance and Radiation Hardness of the ATLAS/SCT Detector Module

   Författare :Lars Eklund; Richard Brenner; Sijbrand de Jong; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; High Energy Physics; Tracking; Silicon Microstrip Dectector; Radiation Hardness; Electrical Performance; Fysik; Physics; Fysik; högenergifysik; High Energy Physics;

   Sammanfattning : The ATLAS experiment is a general purpose experiment being constructed at the Large Hadron Collider (LHC) at CERN, Geneva. ATLAS is designed to exploit the full physics potential of LHC, in particular to study topics con- cerning the Higgs mechanism, Super-symmetry and CP violation. LÄS MER

4. 3. Influence of combined thermal and mechanical loadings on pearlitic steel microstructure in railway wheels and rails

   Författare :Dimitrios Nikas; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Low cycle fatigue LCF ; Wheel steels; Hardness; TEM; Thermal effects; EBSD; Rail steels; Pearlite; Multiaxial fatigue; Spheroidisation; Materials Science;

   Sammanfattning : One of the most important aspects in railway operation is the interaction between rail and wheel. The contact patch between these two components is around the size of a small coin, and since high loads act on this small area, stresses will give rise to wear and damage in both components. LÄS MER

5. 4. Acetylation of Solid Wood. Wood Properties and Process Development

   Författare :Pia Larsson Brelid; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; microwave heating; deformation; wood; hardness; adhesive bonding; power penetration depth; shear strength; delamination; acetylation; pH; bending strength; dielectric properties; stability;

   Sammanfattning : The influence of acetylation on selected wood properties has been determined for Scandinavian pine and spruce wood, in order to predict the behavior of acetylated wood when it is used in different applications. Only minor differences in both bending strength and the modulus of elasticity were obtained for acetylated wood when compared with unmodified wood, and can, for practical applications, be considered unaltered. LÄS MER

7. 5. Indentation effects in plastic zones

   Författare :Cecilia Eriksson; KTH; []
   Nyckelord :Hardness testing; Mechanical properties; Residual stress; Residual strain; Microindentation; Nanoindentation; Secondary indentation; Micro cracking; Strain Hardening; Pressure hardening; Pressure Sensitivity; AMF; FEM; Brittle materials;

   Sammanfattning : .... LÄS MER