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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

^ Macrograph EngNet Engineering Dictionary
^ Metallographic examinations Archived 2008-10-11 at the Wayback Machine TEC Eurolab, Accessed 12 May 2008
^ 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.
^ Arthur J. McEvily (2001) Metal Failures: Mechanisms, Analysis, Prevention Wiley-IEEE p 90 ISBN 0-471-41436-0

External links

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[1] Macrograph EngNet Engineering Dictionary

[2] Metallographic examinations Archived 2008-10-11 at the Wayback Machine TEC Eurolab, Accessed 12 May 2008

[Milan2004-3] 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.

[4] Arthur J. McEvily (2001) Metal Failures: Mechanisms, Analysis, Prevention Wiley-IEEE p 90 ISBN 0-471-41436-0

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 ==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 fracture]]s in metals.<ref>[http://www.tec-eurolab.com/eng/metallographic-examinations.asp Metallographic examinations] TEC Eurolab, Accessed 12 May 2008</ref><ref name=Milan2004>{{cite journal | author = Milan, M.T. |author2=Spinelli, D. |author3=Bose Filho, W.W. |author4=Montezuma, M.F.V. |author5=Tita, V. | year = 2004 | title = Failure analysis of a SAE 4340 steel locking bolt | journal = Engineering Failure Analysis | volume = 11 | issue = 6 | pages = 915–924 | url = http://linkinghub.elsevier.com/retrieve/pii/S1350630704000263  | accessdate = 2008-05-12 | doi = 10.1016/j.engfailanal.2003.12.003}}</ref> 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.<ref>Arthur J. McEvily (2001) [https://books.google.com/books?id=qoEq8ZLhPJkC&printsec=frontcover&dq=macrographic&lr=&client=firefox-a#PPA90,M1 Metal Failures: Mechanisms, Analysis, Prevention] Wiley-IEEE p 90 {{ISBN|0-471-41436-0}}</ref>
+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 fracture]]s in metals.<ref>[http://www.tec-eurolab.com/eng/metallographic-examinations.asp Metallographic examinations] {{webarchive|url=https://web.archive.org/web/20081011105131/http://www.tec-eurolab.com/eng/metallographic-examinations.asp |date=2008-10-11 }} TEC Eurolab, Accessed 12 May 2008</ref><ref name=Milan2004>{{cite journal | author = Milan, M.T. |author2=Spinelli, D. |author3=Bose Filho, W.W. |author4=Montezuma, M.F.V. |author5=Tita, V. | year = 2004 | title = Failure analysis of a SAE 4340 steel locking bolt | journal = Engineering Failure Analysis | volume = 11 | issue = 6 | pages = 915–924 | url = http://linkinghub.elsevier.com/retrieve/pii/S1350630704000263  | accessdate = 2008-05-12 | doi = 10.1016/j.engfailanal.2003.12.003}}</ref> 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.<ref>Arthur J. McEvily (2001) [https://books.google.com/books?id=qoEq8ZLhPJkC&printsec=frontcover&dq=macrographic&lr=&client=firefox-a#PPA90,M1 Metal Failures: Mechanisms, Analysis, Prevention] Wiley-IEEE p 90 {{ISBN|0-471-41436-0}}</ref>
 ==References==
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 ==External links==
 * http://pphotography-blog.blogspot.com/2011/04/beautiful-water-drops-by-nevena-uzurov.html
-* http://www.venkane.com/photo/324484.jpg
+* https://web.archive.org/web/20140528213354/http://www.venkane.com/photo/324484.jpg
 [[Category:Laboratory techniques]]