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林业科学 ›› 2003, Vol. 39 ›› Issue (2): 174-176.doi: 10.11707/j.1001-7488.20030231

• 研究简报 • 上一篇    

数字散斑面内相关法测量木材抗压弹性模量

徐曼琼 金观昌 鹿振友   

  1. 清华大学工程力学系,北京100084;北京林业大学工学院,北京100083
  • 收稿日期:2001-07-06 修回日期:1900-01-01 出版日期:2003-03-25 发布日期:2003-03-25

DIGITAL SPACKLE CORRELATION METHOD (DSCM) FOR MEASUREMENT OF WOOD COMPRESSION ELASTIC MODULUS

Xu Manqiong,Jin Guanchang,Lu Zhenyou   

  1. Department of Engineering Mechanics of Tsinghua University Beijing100084;Industry Institute of Beijing Forestry University Beijing100083
  • Received:2001-07-06 Revised:1900-01-01 Online:2003-03-25 Published:2003-03-25

关键词: 散斑, 木材, 火炬松, 弹性模量

Abstract:

Elastic modulus of the 17 and 50 loblolly clones were measured by DSCM . The result showed EL, ET and ER of the 17 loblolly clone were 6 110, 1 207, 1 576 Mpa, respectively. Those of the 50 loblolly clone, however, were 5 965, 1 308, 1 606 Mpa, respectively. In addition, the method of DSCM for the compression elastic modulus of loblolly was right and proved by resistance strain gages. The error was 1%~7%. DSCM have some virtues, such as simple optical setup, convenient measurement, etc.

Key words: Spackle, Wood, Loblolly pine, Elastic modulus