Theses and Dissertations

Advisor

Quin, Franklin

Committee Member

Franca, Frederico

Committee Member

Franca, Tamara

Committee Member

Rezaei, Fatemeh

Date of Degree

5-15-2026

Original embargo terms

Immediate Worldwide Access

Document Type

Graduate Thesis - Open Access

Major

Forest Resources (Sustainable Bioproducts)

Degree Name

Master of Science (M.S.)

College

College of Forest Resources

Department

Department of Sustainable Bioproducts

Abstract

Cross-laminated timber (CLT) is susceptible to rolling shear failure in the transverse layers. This study evaluated the rolling shear failure in southern pine (Pinus spp.) and yellow poplar (Liriodendron tulipifera) CLT panels using block shear, delamination, and interlaminar shear tests. Acoustic emission (AE) monitoring was integrated with video recording to capture structural damage while loading. The results showed rolling shear failure as the dominant failure mode in the transverse layer. The AE energy and the load-displacement curve were classified into stages і) deformation stage with negligible AE signals (elastic behavior); ⅱ) crack propagation stage with increased AE signals; and ⅲ) failure stage high AE activity with load drops and failure. The correlation between AE energy and mechanical performance demonstrates the potential use of AE monitoring for structural health monitoring of CLT structures. Further studies should incorporate advanced techniques such as cluster analysis to further classify AE signals.

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