Picture of wind turbine against blue sky

Open Access research with a real impact...

The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs.

The Energy Systems Research Unit (ESRU) within Strathclyde's Department of Mechanical and Aerospace Engineering is producing Open Access research that can help society deploy and optimise renewable energy systems, such as wind turbine technology.

Explore wind turbine research in Strathprints

Explore all of Strathclyde's Open Access research content

Experimental and computational assessment of the T* fracture parameter during creep relaxation

MacKenzie, P.M. and Walker, C.A. (2003) Experimental and computational assessment of the T* fracture parameter during creep relaxation. In: Handbook of Moiré Measurement (Series in Optics and Optoelectronics). Taylor and Francis, pp. 103-109. ISBN 0750305223

Full text not available in this repository. (Request a copy from the Strathclyde author)

Abstract

While most fracture mechanics investigations are concerned with crack growth, there is a class of behaviour that occurs during creep relaxation where the plastic zone develops in a regime of reducing stress and near-zero crack growth. This behaviour has been measured in the aluminium alloy 7075 T6, using moiré interferometry at 190°C, and the experimental data have been used to investigate the T* integral fracture parameter as a function of time and creep deformation. It was found that under time-dependant deformation conditions T* could be measured successfully. For a fuller investigation of T* as a function of the deformation a finite element model of the specimen was calibrated using experimental data.