Energetic Investigation of Aging Effect on Mechanical Behavior in Wood by Means of XRD Measurement

ABSTRACT

In this study, it is aimed to consider whether the strain energy could evaluate the mechanical durability of wood. To investigate the aging effects on the mechanical properties of bulk wood and cellulose microfibrils in the cell walls of wood, XRD measurements were taken under tensile loading. Specimens were recent wood and wood used for 250 years (aged wood). Thermal modifications were further applied for additionally aging treatment of both specimens. The standardized strain energy of the bulk wood and cellulose microfibrils was exponentially reduced with increasing mass loss of specimens. The reduction degree of aged wood was smaller than that of recent wood. Using this phenomenon, it was proposed that the aging effect can be quantitatively evaluated.

KEYWORDS:

• aged wood
• aging effect
• strain energy
• synchrotron radiation XRD
• thermal modification
• wood cell wall

Acknowledgement

This work was supported in part by the Photon-Beam Platform Project of the Ministry of Education, Culture, Sports, Science and Technology. The XRD experiments were conducted at the BL8S1 of Aichi Synchrotron Radiation Center, Aichi Science & Technology Foundation, Aichi, Japan (Approval No. 2016G1012).

Disclosure statement

No potential conflict of interest was reported by the authors.

Correction Statement

This article has been republished with minor changes. These changes do not impact the academic content of the article.

Additional information

Funding

This work was supported by Grant-in-Aid for Scientific Research (C) Number 17K06638; Aichi Science & Technology Foundation, Aichi, Japan [2016G1012].