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A New Approach to Defining Human Touch Temperature StandardsDefining touch temperature limits for skin contact with both hot and cold objects is important to prevent pain and skin damage, which may affect task performance or become a safety concern. Pain and skin damage depend on the resulting skin temperature during contact, which depends on the object s initial temperature, its material properties and its ability to transfer heat. However, previous spacecraft standards have incorrectly defined touch temperature limits in terms of a single object temperature value for all materials, or have provided limited material-specific values which do not cover the gamut of most designs. A new approach is being used in new NASA standards, which defines touch temperature limits in terms of skin temperature at pain onset for bare skin contact with hot and cold objects. The authors have developed an analytical verification method for safe hot and cold object temperatures for contact times from 1 second to infinity.
Document ID
20090042589
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
Ungar, Eugene
(NASA Johnson Space Center Houston, TX, United States)
Stroud, Kenneth
(NASA Johnson Space Center Houston, TX, United States)
Date Acquired
August 24, 2013
Publication Date
January 1, 2009
Subject Category
Aerospace Medicine
Report/Patent Number
JSC-CN-19209
Meeting Information
Meeting: 40th International Conference on Environmental Systems (ICES)
Location: Barcelona
Country: Spain
Start Date: July 11, 2010
End Date: July 15, 2010
Sponsors: American Inst. of Aeronautics and Astronautics
Funding Number(s)
WBS: WBS 644423.06.31.03.12.10
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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