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- Title
Direct Strain Distribution and Finite-Element-Analysis Simulation of the Bonding Interface of Bamboo Laminated Lumber with Ultrasound-Treated Bamboo Strips.
- Authors
Mingjie Guan; Zhiwei Huang
- Abstract
An ultrasonic cavitation treatment was used to increase the permeability of phenol formaldehyde resin adhesive on the surface of bamboo strips, and two-ply laminated bamboo lumber was manufactured. The strain distribution along the bamboo interface under stretching conditions was investigated using the digital image correlation technique. The effect of the ultrasonic treatment on the bamboo strips in terms of the shear strain of the laminated bamboo lumber was investigated, and a finite-element analysis for the bonding interface was carried out to evaluate whether the deformation measurement could predict the mechanical behavior differences of the laminated bamboo lumber. The digital image correlation and shear strength results show that the strain was lower in the bamboo bonding interface after ultrasonic treatment and the shear strength was enhanced due to the increased adhesive penetration. The digital image correlation measurement and finite-element analysis simulation both showed that stress was more concentrated, and the strain value and strain zone width was higher in the carbonized bamboo bonding interface than in the bleached bamboo bonding interface. The finite-element analysis results appeared to be in agreement with the digital image correlation test results.
- Subjects
CAVITATION erosion; BAMBOO; DIGITAL image correlation; LUMBER; SHEAR strain; RESIN adhesives; LAMINATED materials
- Publication
BioResources, 2022, Vol 17, Issue 1, p890
- ISSN
1930-2126
- Publication type
Article
- DOI
10.15376/biores.17.1.890-907