Experimental prediction of wire rope damage by energy method

Wahid, Achraf; Mouhib, Nadia; Ouardi, Abderrazak; Sabah, Fatima; Chakir, H.; Elghorba, Mohamed

doi:10.1016/j.engstruct.2019.109794

Cited by 22 publications

(5 citation statements)

References 28 publications

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“…The static test curves performed on 24 machined semi-ellipse specimens are analyzed in function of the material life, which can be called fraction of life. Regardless of the author, the variable  is based on Miner's [37] notion, who described it as the report of the cycle's instantaneous number and the failure cycles number. By analogy to this approach, for a static loading (bursting of the tubes), the damage depends on the reduction in the thickness of the material.…”

Section: Resultsmentioning

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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Section: Resultsmentioning

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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“…Its service status directly determines the safe and reliable operation of the equipment system and is closely related to the safety of the operator [ 5 ]. However, in practical engineering applications, there are friction and wear problems caused by different contact features of the wire rope, which greatly threatens the service safety and reliability of wire ropes [ 6 , 7 ]. In order to achieve long-distance and large-load material transmission, wire rope, in most cases, is used with different types of sheaves, as shown in Figure 1 .…”

Section: Introductionmentioning

confidence: 99%

Sliding Friction and Wear Characteristics of Wire Rope Contact with Sheave under Long-Distance Transmission Conditions

et al. 2022

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Wire rope has different degrees of surface wear under long-distance transmission conditions, which leads to performance degradation and greatly threatens its safety and reliability in service. In this paper, friction and wear tests between the transmission wire rope and sheave under different sliding velocities (from 0.8 m/s to 1.6 m/s) were carried out using a homemade test rig. The material of the steel wires was low carbon steel, and pulley material was ASTM A36 steel plate. The sliding friction coefficient (COF), friction temperature rise, wear characteristic parameters and wear mechanisms of the wire rope were analyzed. Additionally, the effect of different wear on the fracture behavior of the wire rope was investigated by a breaking tensile test. The results show that the average COF in the relatively stable stage decreased from approximately 0.58 to 0.51 with the increase of sliding velocity. The temperature rise of the wire rope increased rapidly with an increase of sliding velocity, from approximately 52.7 °C to 116.2 °C. The maximum wear width was the smallest when the sliding velocity was 1.2 m/s (approximately 1.5 mm). The surface wear was characterized by spalling, furrowing and plastic deformation, which are strongly affected by the sliding velocity. The wear mechanisms of the wire rope were mainly adhesive wear and abrasive wear. Surface wear changes the fracture morphology of the wire rope and accelerates its fracture speed.

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“…With the suspension bridge of the Lijiang Railway in Yunnan as the background, they conducted fatigue test on the suspension cable with selfdeveloped test devices. Wahid et al [24] used steel strands, which were fractured in different percentages to constitute the outer strand of the wire rope, to characterize the mechanical behavior of the wire rope in service. Wang et al [25] studied the stress and slip characteristics of elliptic and triangular strands.…”

Section: Introductionmentioning

confidence: 99%

Calibration and Analysis of Mechanical Modeling for Traction Wire Rope of Mountainous Orchard Carrier

Ouyang

Wang

Hong

et al. 2021

Mathematical Problems in Engineering

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Low-cost transporting vehicles are a crucial routine for orchards in the mountainous place. As the core component of the mountainous orchard carrier, the wire rope is easily damaged due to frequent handling of agricultural materials. The mechanical model of carrier wire rope is the prerequisite for studying its damage mechanism. This paper first analyzes the load-bearing characteristics of the wire rope of the carrier and then uses the theory of differential geometry and the elasticity of the wire rope to establish the mechanical model of the wire rope side strand strain ε0 and the axial load T of the wire rope end face in the erect state and the radial contact pressure Fa of the wire rope at the bending section and the mechanical model of the axial tension F and the pulley diameter D of the wire rope end face. On the basis of the mechanical model and the wire rope geometric solid model, the finite element stress analysis of the wire rope in the vertical state was carried out to verify the accuracy of the wire rope stress model. The results show that when the wire rope was in the vertical state, the wire-wire contact stress was linear directly proportional to the load on the end face of the wire rope; the wire-wire contact stress between the strands was about 12 times that within the strand; the average error between the simulated value and calculated value was about 13.6%, proving the correctness of the established wire mechanics model. When the rope and wheel were in contact, the contact pressure of the outer wire of the side strand was only related to the axial tension of the wire rope end face and the diameter of the pulley but not to the elasticity modulus of the pulley.

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Experimental prediction of wire rope damage by energy method

Cited by 22 publications

References 28 publications

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

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

Sliding Friction and Wear Characteristics of Wire Rope Contact with Sheave under Long-Distance Transmission Conditions

Calibration and Analysis of Mechanical Modeling for Traction Wire Rope of Mountainous Orchard Carrier

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