Accession Number:

ADA038927

Title:

Effective Thickness of Paper: Appraisal and Further Development.

Descriptive Note:

Forest Service research paper,

Corporate Author:

FOREST PRODUCTS LAB MADISON WIS

Personal Author(s):

Report Date:

1977-01-01

Pagination or Media Count:

11.0

Abstract:

The rough surface and heterogeneous internal structure of paper complicate and restrict an analysis of paper by classical engineering mechanics. Problems in establishing physical properties stem from an uncertainty of exactly what is the thickness of a rough surfaced material. The concept of effective thickness obtained from a simultaneous solution of equations for flexural and extensional stiffness is proposed to mathematically transform the rough surfaced fibrous paper structure into a mechanistically equivalent, smooth homogeneous sheet. The effects of density gradients within the sheet on effective thickness are examined. The U.S. Forest Products Laboratory FPL modified dial micrometer is shown to yield an expedient laboratory approximation to the effective thickness. Author

Subject Categories:

  • Wood, Paper and Related Forestry Products
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE