Fracture mechanics analysis of coating / substrate systems Part II : Experiments in bending

  title={Fracture mechanics analysis of coating / substrate systems Part II : Experiments in bending},
  author={S. Kim and John A. Nairn},
A series of coating/substrate systems with typical automotive finishes as coatings were loaded in fourpoint bending. The coatings in these specimens usually failed by multiple cracking; we recorded the density of coating cracks as a function of bending strain. These experimental results were fit to a new fracture mechanics theory of coating failure that predicts the next coating crack forms when the energy released by that fracture event exceeds the toughness of the coating. This fitting… CONTINUE READING
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