Sökning: "high strength steel"
Visar resultat 16 - 20 av 258 avhandlingar innehållade orden high strength steel.
16. Laser welding and laser heat treatment of high strength steels
Sammanfattning : Laser materials processing, including thermal treatment and laser welding has been undergoing continuous growth in the manufacturing industry for decades. A laser beam offers high precision and energy transfer, capable of various processing. LÄS MER
17. High temperature galling : influencing parameters and mechanisms
Sammanfattning : Damage of forming tools at elevated temperatures is a major problem in metal forming processes such as hot stamping. Of special importance is the occurrence of adhesion and gross material transfer from the work-piece to the tool surface, a phenomenon known as galling. LÄS MER
18. Between square and circle : A study on the behaviour of polygonal steel profiles under compression
Sammanfattning : The present study explores the structural properties of regular convex polygonal cross section (RCPS). Such profiles are commonly used to construct masts and towers, e.g. transmission towers, light poles etc. LÄS MER
19. Fatigue improvement of steel bridges with high-frequency mechanical impact treatment
Sammanfattning : This thesis investigates the performance of fatigue-improved welds with high-frequency mechanical impact (HFMI) for application on new bridges. Fatigue strength improvement with HFMI can enable lightweight design of bridges and allow the utilisation of the benefits of high-strength steels. LÄS MER
20. The influence of Pulp Type and Hot-pressing Conditions on Paper Strength Development
Sammanfattning : The hot-pressing technology has proven to have the potential for manufacturing of strong, wet stable materials based on eco-friendly renewable and recyclable lignocellulose. The purpose of this work was to study how the pulp characteristics and the hot-pressing conditions affect the dry and wet strength properties of paper. LÄS MER