The challenges of quasi-static and fatigue experiments of structural adhesives

Perruchoud, Valentin; Vassilopoulos, Anastasios P.

doi:10.1016/j.ijfatigue.2022.106980

Cited by 6 publications

(1 citation statement)

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“…Despite this, the experimental duration for artificial aging of structural adhesives in the laboratory is comparatively shorter than the service cycle of building structures, which can span several decades or even centuries. As such, there is a necessity for faster characterization of adhesive properties over extended periods to adequately assess their long-term mechanical performance under service conditions [15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Durability and Aging Resilience in a Novel Structural Building Adhesive: An Examination of the Time-Temperature Equivalence Principle

Li¹,

Zheng²,

Gong³

2023

IJHT

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In the pursuit of characterizing the mechanical properties of an innovative structural adhesive for building applications, Dynamic Mechanical Analysis (DMA) testing, encompassing a multitude of temperature and frequency conditions, was utilized. Exceptional resilience was exhibited by this adhesive under rigorous long-term performance tests aimed at accelerated aging. Post a thirty-day aging period, consistent properties of the epoxy adhesive were discerned across varying humidity conditions, namely 85%, 75%, and 65% relative humidity. Such constancy elucidates the adhesive's impressive resistance to damp-heat aging, thereby asserting its aptitude for sustained applications. Utilization of the time-temperature equivalence principle was pivotal in the acceleration of the long-term performance characterization, culminating in a generalized curve for specific aging durations and environments. This methodology not only diminished testing timeframes but also provided further validation for its efficiency. The preferential use of this multiple equivalence principle is thus recommended to expedite the mechanical property characterization of the adhesive post-thermal aging. Selection of the test temperature as the reference temperature generated a refined generalized curve inclusive of extensive frequency alterations, suggesting a streamlined approach for studying the adhesive's long-term performance. Consequently, the findings from this exploration offer a dependable benchmark for evaluating the durability and reliability of structural adhesives utilized in building applications.

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Section: Introductionmentioning

confidence: 99%