Skip to page content
USDA Forest Service
  
Treesearch

Research & Development Treesearch

 
Treesearch Home
About Treesearch
Contact Us
Research & Development
Forest Products Lab
International Institute of Tropical Forestry
Northern
Pacific Northwest
Pacific Southwest
Rocky Mountain
Southern Research Station
Help
 

GeoTreesearch


Science.gov - We Participate


USA.gov  Government Made Easy


Global Forest Information Service

US Forest Service
P.O. Box 96090
Washington, D.C.
20090-6090

(202) 205-8333

You are here: Home / Search / Publication Information
Bookmark and Share

Publication Information

(334 KB)

Title: Determining modulus of elasticity of ancient structural timber

Author: Zhang, Houjiang; Zhu, Lei; Sun, Yanliang; Wang, Xiping; Yan, Haicheng

Date: 2011

Source: Advanced materials research. Vol. 217-218 (2011): p. 407-412.

Publication Series: Scientific Journal (JRNL)

Description: During maintenance of ancient timber architectures, it is important to determine mechanical properties of the wood component materials non-destructively and effectively, so that degraded members may be replaced or repaired to avoid structural failure. Experimental materials are four larch (Larix principis-rupprechtii Mayr.) components, which were taken down from the drum-tower of Zhengjue Temple of Yuanmingyuan (Old Summer Palace), Beijing, China. The larch components were cut into standard specimens first, and then stress wave transmission times, resistograph and densities were tested. Product of resistograph and stress wave speed squared is defined as modulus of stress-resistograph. Comparing with the modulus of elasticity (MOE) of the specimens tested by the traditional bending test method, it is found that there is a linear relationships between the modulus of stress-resistograph and modulus of elasticity (MOE), and the correlation coefficients are 0.7111. In order to better evaluate the modulus of elasticity (MOE) with the modulus of stress-resistograph, 95% confidence regression lines are suggested to be used for the future calculation.

Keywords: Ancient timber architecture component, modulus of elasticity, MOE, stress waves, resistographs, modulus of stress-resistograph, larch, elasticity, mechanical properties, bending, wood quality, flexure, nondestructive testing, wood defects, structural analysis, regression analysis, buildings, maintenance, wooden-frame buildings, wooden buildings, China, building materials, wood deterioration, historic buildings, building conservation, building restoration, Larix principis-rupprechtii, antiquities, ancient timber, structural timbers, log quality, bending strength, wood decay, wooden temple

Publication Notes:

  • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

XML: View XML

Citation:


Zhang, Houjiang; Zhu, Lei; Sun, Yanliang; Wang, Xiping; Yan, Haicheng; 2011. Determining modulus of elasticity of ancient structural timber. Advanced materials research. Vol. 217-218 (2011): p. 407-412.

 


 [ Get Acrobat ]  Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility

USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.