Sökning: "Fatigue design"

Visar resultat 1 - 5 av 264 avhandlingar innehållade orden Fatigue design.

1. 1. Fatigue properties of cut and welded high strength steels : Quality aspects in design and production

   Författare :Thomas Stenberg; Zuheir Barsoum; Kenneth Alasdair MacDonald; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Welding; Fatigue assessment; Cutting; Weld quality; Fatigue design; Fracture Mechanics; Vehicle and Maritime Engineering; Farkostteknik;

   Sammanfattning : This doctoral thesis concerns fatigue of welded structures. Welding is one of the world’s most common joining methods and it is frequently used in several structural applications in many fields. Some examples are construction vehicles, loader cranes, trucks, busses, forestry and agricultural machines, bridges and ships. LÄS MER

3. 2. Surface Roughness Considerations in Design for Additive Manufacturing: A Space Industry Case Study

   Författare :Didunoluwa Obilanade; Peter Törlind; Christo Dordlofva; Anna Rönnbäck Öhrwall; Marta-Lena Antti; Stankovic Tino; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Additive Manufacturing; Space Industry; Surface Roughness; Design for Additive Manufacturing; DfAM; Laser Powder Bed Fusion; Produktinnovation; Product Innovation;

   Sammanfattning : Additive Manufacturing (AM), commonly known as 3D printing, represents manufacturing technology that creates objects layer by layer based on 3D model data. AM technologies have capabilities that provide engineers with new design opportunities outside the constraints of traditional subtractive manufacturing. LÄS MER

4. 3. Fatigue Assessment of Cast Components : Influence of Cast Defects

   Författare :Anders Björkblad; Jack Samuelsson; Gary Marquis; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; cast nodular iron; fatigue; design rules; fracture mechanics; Vehicle engineering; Farkostteknik;

   Sammanfattning :  This thesis is on the fatigue assessment of cast components with special attention to defects. The primary material in view is nodular cast iron, but also cast steel is considered. However, the fatigue behaviour is in principle valid for general use on other cast metals. LÄS MER

5. 4. Fatigue of steel bridges : New structural details and the implementation of high strength steel

   Författare :Oskar Skoglund; John Leander; Raid Karoumi; Alain Nussbaumer; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; high strength steel; fatigue; steel bridges; steel and concrete composite bridges; new structural details; linear elastic fracture mechanics; effective notch stress method; nominal stress method; Structural Engineering and Bridges; Bro- och stålbyggnad;

   Sammanfattning : The use of high strength steel has the potential to reduce the amount of steel used in bridge structures and thereby facilitate a more sustainable construction. The amount of steel and what steel grade that can be used in bridge structures and other cyclic loaded structures are often limited by a material degradation process called fatigue. LÄS MER

7. 5. Design Optimization in Industrial Robotics : Methods and Algorithms for Drive Train Design

   Författare :Marcus Pettersson; Johan Ölvander (Andersson); Torgny Brogårdh; Jorge Angeles; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Robot manufacturers; industrial robot; robot design; Electrical engineering; Elektroteknik;

   Sammanfattning : Robot manufacturers, like many other manufacturers, are experiencing increasing competition in a global market where one way to confront the challenge is by making the development process more efficient. One way to speed up the time to market for new products is to take advantage of design optimization based on simulation models. LÄS MER