Prediction of the Lifetime of Acrylonitrile Butadiene Styrene (ABS), by Calculation of Damage by Two Methods: Damage Based on Residual Stresses and Damage by Stages Evolution

Sabah, Fatima; Wahid, Achraf; Nassih, Fatimaezzahra; Ghorba, Mohamed El; Chakir, H.

doi:10.4028/www.scientific.net/kem.820.203

Cited by 5 publications

(3 citation statements)

References 4 publications

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“…The performance of system is determined by two key factors: damage D and reliability R. Damage D is a measure of the physical wear and tear a system may experience, whereas reliability R is a measure of a system's ability to function as expected over a given period of time. The lifetime of the system can be characterized by a combination of these two parameters and can be used to estimate how long the system can be expected to last before needing to be serviced or replaced [30]. Since these two parameters are complementary in nature, they can be expressed in the form of an equation.…”

Section: Damage and Reliability Relationshipmentioning

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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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: Damage and Reliability Relationshipmentioning

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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“…They successfully monitored material deterioration and predicted the onset of accelerated damage thanks to the data they had collected. Sabah et al conducted a study [9,10].to determine the critical portion of the lifetime and define three stages of damage. In their research, they developed two damage models based on the residual stress method.…”

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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“…This pressure gradually decreases as the number of cyclic solicitations increases until rupture occurs. If the fatigue test is stopped before the final rupture, and the tube undergoes a burst test, the rupture occurs at a lower residual ultimate pressure, Pur, situated between Pu and Pa, corresponding to the bursting pressure of the most stressed specimen By analogy with cyclic behavior, considering a notch in a tube as a lifespan that consumes an equivalent number of cycles equal to Ni, we conducted burst tests on damaged specimens at various levels of artificial damage [21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Study of defects influence on chlorinated polyvinyl chloride pipes damage and analysis of their fracture

Gugouch,

Meknassi,

Elghorba

et al. 2023

Frattura Ed Integrità Strutturale

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In several industrial applications, plastic, composites and ceramics replace a number of metallic structures such as copper, aluminum and steel. Most recently installed piping water and gas systems in the world are made of thermoplastic due to its advantages, for example, low cost, ease of fabrication and corrosion resistance. In this work, the chosen material is chlorinated polyvinyl chloride (CPVC); the best one used to transport cold and hot water beside simplicity of installation. Notwithstanding, the pipes in service are submitted to different loads, related to environmental, thermal and mechanical effects which procure to mechanisms of degradation. The aim of this article is to assess the effect of the defect on CPVC pipes, through a study of the defect criticality in the form of semi-elliptical, then the ability to predict defected pipes residual life. Therefore unexpected and sudden failure caused by pipes accelerated damage. Therefore, we performed burst tests on both pre-damaged CPVC pipes and virgin ones. To lead our work in this paper, interested in the damage modeling and the failure analysis of CPVC pipes, we adapted the model of unified theory static damage, originally developed in fatigue. We used burst pressure tests to identify the limits of three damage progression phases and, in turn, to calculate the critical life fraction at which these flaws become harmful. Furthermore, we identify the critical depth for the studied defect. These results and techniques enable industrialist s to anticipate this structures service life under these conditions after that set up a robust system of maintenance to ensure a reliable and safe functioning of the structure.

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Prediction of the Lifetime of Acrylonitrile Butadiene Styrene (ABS), by Calculation of Damage by Two Methods: Damage Based on Residual Stresses and Damage by Stages Evolution

Cited by 5 publications

References 4 publications

Predicting the lifetime of CPVC under increasing temperature and crosshead speed

Predicting the lifetime of CPVC under increasing temperature and crosshead speed

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

Study of defects influence on chlorinated polyvinyl chloride pipes damage and analysis of their fracture

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