Lecturer on Materials, The Open University, Faculty of Technology, Milton Keynes,
Professor, Drexel University, Philadelphia, PA
Pages: 28 Published: Jan 1986
The authors have applied linear elastic fracture mechanics to an official accident investigation of a fatigue failure. A single-line component in the mechanical braking system controlling the descent of a cage in a mine shaft fractured; the cage failed to slow down and eighteen miners were killed by the impact. It is shown that significant perceptions of the events prior to fracture are possible using a fracture mechanics approach. A Paris-Erdogan analysis is performed to highlight the constraints and limitations of a fracture mechanics fatigue analysis when applied to a real engineering problem. The Markham accident was a landmark case study in that it stimulated a new philosophy with respect to brake design.
ferrous metallurgy, strain gages, axial and bend stresses, bending theory, fatigue, fracture mechanics, estimating lifetime
Paper ID: STP19345S