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United States Department of Agriculture

Agricultural Research Service

Title: Hvi Measurements at Non-Standard Testing Environments

Authors
item Thibodeaux, Devron
item Delhom, Christopher
item Rousselle, Marie - RETIRED - SRRC
item Cui, Xiaoliang
item Rodgers, James

Submitted to: Journal of Cotton Science
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: January 1, 2006
Publication Date: June 30, 2006
Citation: Thibodeaux, D.P., Delhom, C.D., Rousselle, M.A., Cui, X., Rodgers Iii, J.E. 2006. Hvi measurements at non-standard testing environments. Journal of Cotton Science. CD-ROM. P. 1899-1905.

Interpretive Summary: The research reported here tests the feasibility of correcting cotton fiber physical properties for changes in environmental test conditions. In particular, we sought to determine the changes in HVI measurements of not only strength but also length and micronaire over a wide range of envrionments with a diverse set of test cottons. Our results confirmed previous findings that there are consistent increases in the strength and length of cotton with increases in its moisture content. In particular, a) when the HVI is calibrated at standard conditions the fiber strength and length measured in non-stnadard environments tend to increase with increasing moisture content; b) when the HVI is calibrated at the non-standard environments prior to measuring fiber strength and length, these values tend to be independent of changing moisture content; and c) micronaire, as measured by HVI, tends to be independent of changing moisture contents.

Technical Abstract: There is currently a push to develop a standardized, worldwide testing system for cotton. This would require, however, a means to correct fiber properties measured under non-standard atmospheric testing conditions, because of the expense and technical difficulties inherent in controlling the test environment. The reported research further tests the feasibility of such corrections. In particular, we sought to determine the changes in HVI measurements of not only strength but also length and micronaire over a wide range of environments with a diverse set of test cottons. Our results confirmed previous findings that there are consistent changes of strength and moisture content of cotton with changing environments, leading to the possibility of a correction model. In addition, we present preliminary results that when the HVI is calibrated at the non-standard environments prior to measuring fiber strength and length, these values tend to be independent of changing moisture content.

Last Modified: 9/20/2014
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