Macrograph

A macrograph or photomacrograph is an image taken at a scale that is visible to the naked eye, as opposed to a micrographic image. It is sometimes defined more precisely as an image at a scale of less than ten times magnification.[1]

Materials science

This term is often applied to a three-dimensional image taken of a material using a low-power stereomicroscope. These images are used in materials science, particularly in the study of stress fractures in metals.[2][3] This method can also be used to assay the fine structure of steel, in a standardized test called the Baumann method that creates a sulfur print showing the amount and distribution of sulfur inclusions through the metal structure.[4]

References

  1. ↑ Macrograph EngNet Engineering Dictionary
  2. ↑ Metallographic examinations TEC Eurolab, Accessed 12 May 2008
  3. ↑ Milan, M.T.; Spinelli, D.; Bose Filho, W.W.; Montezuma, M.F.V.; Tita, V. (2004). "Failure analysis of a SAE 4340 steel locking bolt". Engineering Failure Analysis. 11 (6): 915–924. doi:10.1016/j.engfailanal.2003.12.003. Retrieved 2008-05-12. Cite uses deprecated parameter |coauthors= (help)
  4. ↑ Arthur J. McEvily (2001) Metal Failures: Mechanisms, Analysis, Prevention Wiley-IEEE p 90 ISBN 0-471-41436-0

External links


This article is issued from Wikipedia - version of the 11/3/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.