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The National Agricultural Library is one of four national libraries of the United States, with locations in Beltsville, Maryland and Washington, D.C. It houses one of the world's largest and most accessible agricultural information collections and serves as the nexus for a national network of state land-grant and U.S. Department of Agriculture field libraries. In fiscal year 2011 (Oct 2010 through Sept 2011) NAL delivered more than 100 million direct customer service transactions.

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Journal Article

Journal Article

A study of the mechanism of laser cutting of wood  [1991]

Li, L. (Hunan Univ., Hunan, P.R. China); Mazumder, J.;

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The physical mechanism and theory of cutting wood with a laser are discussed with respect to laser beam absorption and penetration, gas-jet assistance, and the characteristics of wood materials. Formulas for the basic relationships of the parameters are developed. The process of cutting wood with a laser is always accompanied by an exothermic reaction of distillation of wood material. The mechanism of thin-layer cutting is different from that of thick-lumber cutting. The former is a process in which a laser beam directly hits and vaporizes the wood. The latter is mainly a hot gas-jet ignited and sustained distillation process. Among the discussions on optimization of process, a suggestion of preheated gas-jet-assisted laser cutting is proposed
From the journal
Forest products journal (USA)
ISSN : 0015-7473

Bibliographic information

Language:
English
Type:
Journal Article
In AGRIS since:
1992
Volume:
41
Issue:
10
Start Page:
53
End Page:
59
All titles:
"A study of the mechanism of laser cutting of wood"@eng
Other:
"references"
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Bibliographic information

Language:
English
Type:
Journal Article
In AGRIS since:
1992
Volume:
41
Issue:
10
Start Page:
53
End Page:
59
All titles:
"A study of the mechanism of laser cutting of wood"@eng
Other:
"references"