Experimental study of hybrid pine-birch glued-laminated timber beams assisted by digital image correlation technique

IF 2.4 3区 农林科学 Q1 FORESTRY
Cristian Timbolmas, Rafael Bravo, Francisco J. Rescalvo, Andreas Ringhofer, Raimund Sieder, Jose Lorenzana
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引用次数: 0

Abstract

This paper presents an experimental study on the flexural behavior of hybrid Pine-Birch Glued-Laminated Timber (GLT) beams. The study focuses on the performance of GLT beams with different lengths (2.1 and 2.8 m) and different compositions of birch (30 and 50%) and pine lamellas. The experiments were conducted using a four-point bending test and data were analyzed using Linear Voltage Displacement Transducers and Digital Image Correlation techniques. The results highlight that pure pine GLT beams exhibited brittle failure, while pure birch beams displayed a more ductile behavior. The hybrid GLT beams demonstrated a transitional behavior between the two. The presence of birch lamellas in the hybrid beams highlights the potential of these beams in structural applications, and significantly improves the global bending modulus of elasticity, bending strength, and flexural ductility compared to pure pine beams.

Abstract Image

Abstract Image

数字图像相关技术辅助下的松桦混合胶合层压木梁实验研究
本文介绍了松桦木胶合层积材(GLT)混合梁抗弯行为的实验研究。研究重点是不同长度(2.1 米和 2.8 米)、不同成分(30% 和 50%)的桦木和松木胶合层积材 GLT 梁的性能。实验采用了四点弯曲试验,并使用线性电压位移传感器和数字图像相关技术对数据进行了分析。结果表明,纯松木 GLT 梁表现出脆性破坏,而纯桦木梁则表现出更多的韧性。混合 GLT 梁表现出介于两者之间的过渡行为。混合梁中桦木薄片的存在凸显了这些梁在结构应用中的潜力,与纯松木梁相比,混合梁显著提高了整体弯曲弹性模量、弯曲强度和弯曲延展性。
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来源期刊
European Journal of Wood and Wood Products
European Journal of Wood and Wood Products 工程技术-材料科学:纸与木材
CiteScore
5.40
自引率
3.80%
发文量
124
审稿时长
6.0 months
期刊介绍: European Journal of Wood and Wood Products reports on original research and new developments in the field of wood and wood products and their biological, chemical, physical as well as mechanical and technological properties, processes and uses. Subjects range from roundwood to wood based products, composite materials and structural applications, with related jointing techniques. Moreover, it deals with wood as a chemical raw material, source of energy as well as with inter-disciplinary aspects of environmental assessment and international markets. European Journal of Wood and Wood Products aims at promoting international scientific communication and transfer of new technologies from research into practice.
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