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7 results on '"Youssef, Bassir"'

1. Study of Damage of the Specimens in Acrylonitrile Butadiene Styrene (ABS), Based on a Static Damage Study to Predict the Material’s Life

Author

Bouhsiss, Hassan, Gugouch, Fatima, Wahid, Achraf, Youssef, Bassir, En-Naji, Abderrazak, Kartouni, Abdelkarim, El Ghorba, M., Rashid, Muhammad H., Series Editor, Kolhe, Mohan Lal, Series Editor, Elkhattabi, El Mehdi, editor, Boutahir, Mourad, editor, Termentzidis, Konstantinos, editor, Nakamura, Kohji, editor, and Rahmani, Abdelhai, editor

Published
2024
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3. Fracture analysis of defect Chlorinated Poly Vinyl Chloride pipes based on burst pressure and prediction their fraction of life

Author

Fatima Gugouch, Achraf Wahid, Youssef Bassir, and Mohamed Elghorba

Subjects
burst tests, pressure, CPVC pipes, fracture, damage, reliability, Mechanical engineering and machinery, TJ1-1570, Structural engineering (General), TA630-695
Abstract

Most Chlorinated Poly Vinyl Chloride (CPVC) resins contain 63-69 % chlorine, in particular those used for the extrusion of plumbing tubes, due to this chlorination of basic PVC, CPVC offers a mixture of corrosion resistance and low installation costs for its main applications requiring service in non-ambient conditions. CPVC replaces copper owing to its economic gain and by virtue of its pressure resistance characteristics. In this article, we have been interested in fracture analysis and damage modeling of CPVC tubes by subject CPVC samples to burst pressure tests. We performed a set of burst tests on virgin and artificially damaged CPVC pipe at different notch lengths, then submitted the specimens to burst pressure tests, in addition to recording the pressure and time during these tests for use in conducting the study. The results of the burst tests were exploited to estimate the damage and reliability of the material, these two parameters allow us to follow the degradation of the pipes used; subsequently, we determined a new relationship between these two parameters through the fraction life. This makes it possible to predict the moment of damage acceleration and to intervene at the right time for engaging predictive maintenance.

Published
2023

4. Fracture analysis of defect Chlorinated Poly Vinyl Chloride pipes based on burst pressure and prediction their fraction of life.

Author

Gugouch, Fatima, Elghorba, Mohamed, Wahid, Achraf, and Youssef, Bassir

Subjects
POLYVINYL chloride, TIME pressure, CORROSION resistance, COPPER
Abstract

Most Chlorinated Poly Vinyl Chloride (CPVC) resins contain 63-69 % chlorine, particularly those used for the extrusion of plumbing tubes, due to this basic PVC chlorination, CPVC offers a mixture of corrosion resistance and low installation costs for its main applications requiring service in non-ambient conditions. CPVC substitutes copper owing to its economic gain and by virtue of its pressure resistance characteristics. In this article, we have been interested in fracture analysis and modeling of CPVC tube damage by CPVC samples subjected to burst pressure tests. We performed a serie of burst tests on virgin and artificially damaged CPVC pipe at different notch lengths, and then submitted the specimens to burst pressure tests, in addition to recording the pressure and time during these tests to be used in the completion of the study. The results of the bursting tests were exploited to estimate the damage and the reliability of the material, these two parameters enable us to follow the degradation of the pipes used; subsequently, we determined a new relationship between these two parameters through the fraction life. It is therefore possible to predict the moment of the acceleration of the damage acceleration and to intervene at the right time to engage predictive maintenance. [ABSTRACT FROM AUTHOR]

Published
2023
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6. Comparative study of the service life of a central core and a helical strand constituting the same rope

Author

Youssef Bassir, Hamid Chakir, Mohamed ELghorba, Abdelkarim Kartouni, and Achraf Wahid

Subjects
Core (optical fiber), Materials science, Short lifetime, business.industry, Service life, engineering, Wire rope, Structural engineering, engineering.material, business, Civil and Structural Engineering, Rope
Abstract

The purpose of this study is to characterize the mechanical behavior of the central core strand and of a helical strand taken from the same wire rope during the use. In addition, to predict the evolution of their damage and their instantaneous reliability. This is fulfilled by comparing the lifetime of the central core strand to as well as the helical strand based on static tensile tests performed on virgin specimen and others that are artificially damaged by breaking the wires making up the central core and the helical strand. Moreover, three damage models have been used to define the damage stages, from which, we can locate the critical life fraction β c in order to know which first element (centrale core strand or helical strand) will be broken. The intersection between the curve of damage and that of reliability enable us to find the element having the short lifetime.

Published
2021
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