Adhesively Bonded Hardwood Joints under Room Temperature and Elevated Temperatures

Fecht, Simon; Vallée, Till; Tannert, Thomas; Fricke, Holger

doi:10.1080/00218464.2013.836968

Cited by 30 publications

(10 citation statements)

References 28 publications

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“…Most of the existing literature has focused on the analysis of the behavior of joints made on softwood glulam timber in short-length tests [1,2], while the studies which have evaluated the behavior of rods glued in hardwood timber remain limited [6][7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Joints with bars glued-in softwood laminated timber subjected to climatic cycles

Otero-Chans

Estévez-Cimadevila

Gutiérrez

2018

International Journal of Adhesion and Adhesives

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The effect of climatic cycles (extreme temperatures and humidity) on the performance of joints made with threaded steel rods glued by two-component epoxy adhesive in softwood glulam timber is studied. Short-term tests have been made on three types of specimens: standard condition specimens (20 °C/65%RH), specimens subjected to extreme temperature and humidity during its storage in climatic chamber in service load situation, and specimens in similar unloaded situation. The load capacity, the failure modes and the load-deflection curves have been compared for the different types of specimens. The obtained results do not show a clear influence of the previous exposition to extreme climatic situations in the strength of the joint. On the contrary, the stiffness of the joints, especially those with longer anchorage length, has been reduced up to 35% in the specimens that were previously subjected to climatic changes, both unloaded and in load service situation.

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Section: Introductionmentioning

confidence: 99%

Joints with bars glued-in softwood laminated timber subjected to climatic cycles

Otero-Chans

Estévez-Cimadevila

Gutiérrez

2018

International Journal of Adhesion and Adhesives

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“…Adhesive joints are increasingly being used in civil engineering, particularly in timber structures. 3,4 Transport industries, in particular, are very interested in this kind of technology as it allows higher energy efficiencies and reduced emissions.…”

Section: Introductionmentioning

confidence: 99%

A review on the temperature and moisture degradation of adhesive joints

Viana

Costa

Banea

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part L:

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Despite offering very attractive advantages over traditional joining methods, one of the setbacks of adhesive bonding is its long-term strength in aggressive environments, such as environments with high moisture and extreme temperatures. With the rise of new lightweight materials and their recent use in everyday vehicles, transportation industries have been very interested in determining the long-term behavior of adhesive joints. The aim is to build durable, lighter vehicles, which consume less energy and emit less pollution. The two main factors that affect the strength of vehicle adhesive joints are exposure to moist environments and high and low temperatures. There are some works concerning the effect of these two factors separately and some predictive models have been developed, which help the engineer to design reliable, safe, and efficient adhesive joints. However, the combined effect of temperature and moisture is not yet totally understood. This paper presents a review on the temperature and moisture degradation of adhesive joints.

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“…It must be emphasised that these characteristic values severely underestimate the real mechanical performance in tension and compression perpendicular to fibres, even considering characteristic values (5 %-quantile, cf. Fecht et al 2013), in particular regarding hardwoods: f t,0,k = 38.6 MPa, f t,90,k = 10.6 MPa, and f v,k = 13.4 MPa.…”

Section: Timbermentioning

confidence: 99%

Design and dimensioning of a complex timber-glass hybrid structure: the IFAM pedestrian bridge

et al. 2016

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Research has repeatedly pointed out the suitability of adhesive bonding to substitute to "traditional" joining techniques for numerous materials and loads, including timber to glass. Practitioners, however, are still reluctant to implement them into their designs. Adhesion as a method of joining, particularly in the context of hybrid structures, presupposes knowledge of all involved materials, including codes and procedures; most practitioners however tend to be focused on just a subset of materials. While such specialization is not unusual, it makes it challenging to implement novelty (i.e. new materials or techniques). Additionally, when it comes to adhesion where most of the knowledge has been generated by chemists, the lines become even more blurred. Taking the example of a pedestrian timber-glass bridge, this research shows how design and dimensioning of complex bonded hybrid structures can be performed in accordance with "traditional" engineering practice. The paper guides through every step, from the first concepts to the final design, including the manufacturing, of a relatively complex structure, in which timber and glass act together as equivalent members. The compliance of this process with engineering models is emphasized, and the embedment into existing codes and standards is sought after to ensure acceptancy by practitioners.

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Adhesively Bonded Hardwood Joints under Room Temperature and Elevated Temperatures

Cited by 30 publications

References 28 publications

Joints with bars glued-in softwood laminated timber subjected to climatic cycles

Joints with bars glued-in softwood laminated timber subjected to climatic cycles

A review on the temperature and moisture degradation of adhesive joints

Design and dimensioning of a complex timber-glass hybrid structure: the IFAM pedestrian bridge

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