CCI Lining Project: Testing of lined model paintings from fractions of a second to decades

  • Hartin D
  • Hagan E
  • Michalski S
  • 13

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Abstract

In 1996, CCI reported stress relaxation data for model oil paintings with various linings, and fit the data within a visco-elastic frame- work. Data was collected at 20°C for time pe- riods between 10 seconds and two years. In 2010, stress relaxation readings were made on samples that had remained in their stress testers for 16 years. A much improved and moderate cost apparatus was designed and is now collecting data at various temperatures and RH. A detailed description is provided. The first set of new data at room tempera- ture and at low temperature is reported. It is combined with the old data to build a mas- ter curve of the relaxation modulus over 16 log units of time. Sailcloth is the only fabric tested that can provide significant support to an oil painting against long term stresses. It is the only fabric that provides support dur- ing shock at room temperature. No fabric, including sailcloth, can provide support dur- ing transit shock events at -10°C.

Author-supplied keywords

  • Canadian Conservation Institute (Ottawa
  • Ontario
  • canvas
  • environmental monitoring
  • evaluation
  • lining (material)
  • lining (process)
  • linings
  • mechanical properties
  • mechanics
  • oil paintings (visual works)
  • paintings
  • risk assessment
  • sailcloth
  • stress
  • stress relaxation
  • tensile strength
  • tension
  • transporting
  • vibration (physical)

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Authors

  • Debra Daly Hartin

  • Eric Hagan

  • Stefan Michalski

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