Accelerated and long-time creep testing of extruded polystyrene using isothermal and stepped isothermal method

Schiffmann, David; Villasmil, Willy; Ammann, Sebastian; Simmler, Hans; Worlitschek, Jörg; Fischer, Ludger

doi:10.1016/j.polymer.2022.124926

Cited by 5 publications

(2 citation statements)

References 14 publications

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“…The determination of virtual start time has not been standardized, and empirical procedures are usually adopted. [ 39,45–47 ] As depicted in Figure 6,

t^{v}

is iteratively varied from an arbitrary value until the gradient at the beginning of a temperature step matches the gradient at the end of the previous temperature step in the logarithmical time scale. The empirical procedure is based on the assumption that the same creep mechanism works at all temperature steps.…”

Section: Construction Of Master Curvementioning

confidence: 99%

Experimental characterization of creep behavior of laminated bamboo composites based on stepped isothermal method

et al. 2023

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In the present research, the accelerated test using the stepped isothermal method (SIM) was applied to characterize the long-term compressive behavior of laminated bamboo. Generating a creep master curve using the SIM data is somewhat empirical. In particular, the selection of the end and beginning segments in the rescaling process is not standardized, which will affect the determination of virtual time. The variability of the virtual time influences the construction of master curves, thus leading to errors in predicting long-term behavior. The difference in selecting the end and beginning segments was

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“…The determination of virtual start time has not been standardized, and empirical procedures are usually adopted. [ 39,45–47 ] As depicted in Figure 6,

t^{v}

Section: Construction Of Master Curvementioning

confidence: 99%

Experimental characterization of creep behavior of laminated bamboo composites based on stepped isothermal method

et al. 2023

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“…Multiple specimens are subjected to testing at various experimental temperatures under a constant load in this method. Subsequently, a stepped isothermal method (SIM) was proposed [18]. This method involves subjecting a single specimen to testing under a constant load, while the temperature levels are incrementally increased until specimen failure occurs.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Creep Behavior of HDPE Pipe Butt Fusion Welded Joints Using a Stepped Isostress Method

Bai,

Lin,

Lai

2024

Polymers

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The utilization of high-density polyethylene (HDPE) pipes is prevalent in water transportation due to their exceptional durability, resistance to corrosion, and ease of installation. Traditionally, butt fusion welding has been employed to connect HDPE pipes. In this study, scanning electron microscopy (SEM) was utilized to examine the microstructure of butt fusion welded joints of HDPE pipes, while the stepped isostress method (SSM) was employed to investigate their creep behavior at 100 °C in ambient air. SEM results revealed a significant presence of craze or lamellae in the base material, whereas minimal occurrences of craze or lamellae were observed in the melt zone. The results obtained from the SSM indicated that the creep life of butt fusion welded joints of HDPE pipes was not adversely affected by the welding bead, and their creep life was no less than that of the base material when ductile creep failure occurred.

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Prediction of the long-term flexural behavior of glued laminated bamboo using accelerated creep test

Liu,

Huang,

Sheng

et al. 2023

Wood Sci Technol

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Accelerated and long-time creep testing of extruded polystyrene using isothermal and stepped isothermal method

Cited by 5 publications

References 14 publications

Experimental characterization of creep behavior of laminated bamboo composites based on stepped isothermal method

Experimental characterization of creep behavior of laminated bamboo composites based on stepped isothermal method

Investigation of Creep Behavior of HDPE Pipe Butt Fusion Welded Joints Using a Stepped Isostress Method

Prediction of the long-term flexural behavior of glued laminated bamboo using accelerated creep test

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