Prediction of thermomechanical behavior of acrylonitrile butadiene styrene using a newly developed nonlinear damage-reliability model

En-Naji, Abderrazak; Mouhib, Nadia; Ghorba, Mohamed El

doi:10.3221/igf-esis.49.67

Cited by 8 publications

(5 citation statements)

References 9 publications

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“…Fig. 11 demonstrates the evolution of experimental damage based on ultimate stress in function according to life fraction β [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29].…”

Section: Experimental Damagementioning

confidence: 99%

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Predicting the lifetime of CPVC under increasing temperature and crosshead speed

Khtibari,

En-Naji,

Kartouni

et al. 2023

Frattura Ed Integrità Strutturale

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CPVC is an increasingly popular material for plumbing pipes and other applications that require strong and temperature-resistant material. This resin is created using a chlorination process, giving it Chlorine levels that range from 63 to 69% and thus a unique set of characteristics that make it ideal for certain applications. CPVC's combination of corrosion-resistance and low installation costs make it a great substitute for copper in environments with non-ambient conditions such as higher temperatures. This makes it an economic choice for many projects that require smaller budgets. With a variety of applications, CPVC provides a great alternative requiring strong and durable material. The aim of this paper is to characterize the mechanical characteristics of chlorinated PVC (CPVC). Tensile tests were carried on the compounds at different temperatures ranging from -20 to 90°C and crosshead speeds from 5 to 500 mm/min. The results were analyzed to determine how crosshead speed and temperature affected on the mechanical characteristics of CPVC specimens. Two damage models are then developed, one model obtained through by adapting the unified theory version and the other quasi-experimental static model based on ultimate stress. These models allow us to evaluate the damage evolution of CPVC samples and to determine the safety and maintenance intervals of this material.

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Section: Experimental Damagementioning

confidence: 99%

“…En-naji et al, examined the properties of ABS polymer plate subjected to uniaxial loading. The authors employed a standardized damage model to characterize the underlying mechanical behavior of the plate [14]. Plaseied and Fatemi examined the effects of strain rate and temperature on the tensile properties of a vinyl ester polymer.…”

Section: Introductionmentioning

confidence: 99%

Predicting the lifetime of CPVC under increasing temperature and crosshead speed

Khtibari,

En-Naji,

Kartouni

et al. 2023

Frattura Ed Integrità Strutturale

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“…This expression will be exploited to evaluate the damage in the ABS and to give a benchmark of comparison between the present theory and the experimental results. The loss rate is presented by the following mathematical expression [18]:…”

Section: Key Engineering Materials Vol 820 -Loss Of Ultimate Stressmentioning

confidence: 99%

“…The static flow based on ultimate stress, has been developed to predict the flow evolution of the polymer in high temperature (T>Tg). The static flow model is presented in the equation ( 5) [18]. It is noted that the flow curves approaches gradually the bisector (the linear Miner Law) versus β' for high levels of loading.…”

Section: Quantification Of Static Flowmentioning

confidence: 99%

Mechanical Characterization and Failure Analysis of ABS Material Submitted to Static Tests under the Effect of Temperature

En-Naji¹,

Mouhib²,

Ghorba³

2019

KEM

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In this work, we study the influence of temperature on the mechanical behavior of an amorphous polymer, acrylonitrile butadiene styrene "ABS", based on a series of uniaxial tensile tests on smooth specimens at different temperatures.The results obtained show that the failure of the studied material (ABS) depends strongly on the temperature. Indeed, two zones have been identified: industrial zone T<Tg and thermoforming zone T>Tg (Tg is the glass transition temperature of ABS material).In the industrial zone, we conducted a study of the experimental and theoretical damage via the model of the unified theory. The comparison showed a good agreement concerning the acceleration of the damage process as the temperature increases. In the thermoforming zone, we adopted the same methods to follow the process of flow as a function of the temperature increase. Likewise, we compared theoretical and experimental values which in turn showed a good match. Different stages have been determined in each separate zone, that allows to predict the moment of the critical damage or flow and therefore to intervene in time for a predictive maintenance.

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“…However, some experts are intrigued by this situation and are interested in exploring the effects of notches. This aspect of the research was pursued by I. Makadir et al [6] and A. Ennaji et al [7] They conducted tensile tests on specimens with induced damage and observed that the single notched specimen exhibited the highest level of brittleness. Among all the defects, the single notched defect exhibited the highest criticality.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Fracture Behavior Study and Service Life Prediction of single-notch and double-notch specimens in ABS with internal notches

Bouhsiss,

Achraf,

Mouradi

et al. 2023

Preprint

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The advancement of polymers continues to expand relentlessly, playing an increasingly significant role in our daily lives. Ongoing developments in polymer science have revolutionized numerous industries and brought about a multitude of applications. From mass-market industries to high-performance sectors, polymers are omnipresent in all aspects of our lives, highlighting the need for a more rigorous understanding of their properties, characteristics, and behavior. In this context, two approaches have been adopted to estimate the critical failure time of ABS specimens: one involving virgin specimens and the other artificially pre-damaged with notches of varying diameters. The first approach is based on damage mechanics and utilizes a modified damage model, while the second approach relies on fracture mechanics and utilizes the Griffith theory to estimate the critical notch from which the specimens should be rejected. These two methods allow us to track material degradation and predict the moment when damage acceleration occurs. This technique provides industrial stakeholders with the opportunity to implement a preventive maintenance strategy.

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Prediction of thermomechanical behavior of acrylonitrile butadiene styrene using a newly developed nonlinear damage-reliability model

Cited by 8 publications

References 9 publications

Predicting the lifetime of CPVC under increasing temperature and crosshead speed

Predicting the lifetime of CPVC under increasing temperature and crosshead speed

Mechanical Characterization and Failure Analysis of ABS Material Submitted to Static Tests under the Effect of Temperature

Mechanical Fracture Behavior Study and Service Life Prediction of single-notch and double-notch specimens in ABS with internal notches

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