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Non-invasive detection of thermal stress fractures in frozen biological materials.

Author(s) : NAJIMI S., RUBINSKY B.

Type of article: Article

Summary

The authors introduce an acoustic emission technique for non-invasive and instantaneous detection of the occurence of internal fractures during freezing of biological materials. The method employs a piezoelectric element which converts the pressure waves produced by fractures into electrical signals. The use of the technique is illustrated through a study of one dimensional, in vitro freezing of liver. It is shown that while the fracture formation frequency and amplitude are qualitatively proportional to the cooling rates during freezing, the fracture formation event is stochastic and the occurence in individual cases, unpredictable.

Details

  • Original title: Non-invasive detection of thermal stress fractures in frozen biological materials.
  • Record ID : 1998-2567
  • Languages: English
  • Source: Cryo-Letters - vol. 18 - n. 4
  • Publication date: 1997/07
  • Document available for consultation in the library of the IIR headquarters only.

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