Hans Iver Lange
Hans Iver Lange
Publikasjoner og ansvarsområder
Evaluation of low temperature toughness in welding of 420 MPa steel for arctic application
OMAE2017-61804 An Experimental and Numerical Investigation of the Effect of Axial Thermal Gradients in Flexible Pipes
Fracture propagation control in CO2 pipelines: Validation of a coupled fluid-structure model
Existing engineering methods to ensure fracture propagation control in natural-gas transmission pipelines have been shown to be non-applicable when dense-phase CO2 is transported. To overcome this, a coupled fluid-structure interaction model has been developed. It consists of a homegeneous...
Assessment of low temperature toughness in welding of extra low carbon steel for Arctic application
For steel structures to be installed in the Arctic region, the risk of brittle fracture represents a primary concern due to the ductile to brittle usually transition taking place at sub-zero temperatures. Therefore, the present investigation addressed the heat affected zone and weld metal toughness...
A multi-tier approach to condition monitoring and assessment of metallic water distribution pipelines
Leak-before-break analysis of a pipe containing circumferential defects
Assessment of aged offshore structures based on current and historical data is a critical issue for the life extension of offshore structures. The leak-before-break (LBB) concept was first developed and applied in the nuclear power industry to ensure the safety of the pressurized components in...
Investigation of H13 Alloy Cutter Behaviour for Hard Rock Tunneling Applications
Sensitivity for fracture from defects in wires of bridge suspension cables
The suspension cables of the Lysefjord Bridge in Norway are an example of long term development of wire fractures. During the sixteen years of operation about 1600 wire fractures have been registered in the outer layer of the Z-wire. The accumulation of wire fractures follows so far a quite linear...
Comparative analysis of mechanical properties of Si substrates processed by different routes
The purpose of this work is to check the potential of innovative processes for the Si wafers production toward the solar cell industry. Studies have been focused on a comparative analysis of mechanical properties of such wafers, since: (i) reduced wafer strength leads to a high breakage rate during...