Failure Analysis of Motor Tire Bead Wires During Torsion Test

Das, Souvik; Koli, Prashant; Mathur, Jitendra; Dey, Arthita; Bhattacharyya, Tarun Kanti; Bhattacharyya, S. K.

doi:10.1007/s11668-013-9750-x

Cited by 11 publications

(3 citation statements)

References 5 publications

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“…[53][54][55][56][57] Figures 13(a The mechanics of torsional crack/fracture and the factors which influence the torsional characteristic of metal wire were studied by several scientists. [58][59][60][61][62] Key manufacturing process conditions which influence the torsional characteristics includes patenting and temperature control during drawing process.…”

Section: Torsion Fracturementioning

confidence: 99%

A critical review on fractographic studies of steel cord and bead wire used in tyre reinforcement

Shilavant,

Samui,

Chanda

et al. 2023

Progress in Rubber, Plastics and Recycling Technology

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Fracture is one of the failure modes of a material or product which may occur during its manufacturing process or its usage. Fractography is the science and art of examination and analysis of the fractured surface. Texture and nature of the fractured surface provide valuable information on origin of a crack and crack propagation; thereby, it helps to understand the mechanism of fracture and facilitate to identify the likely causes of failure. This review covers an extensive study on various types of fractures of steel cord and bead wire which are primarily used in rubber composites viz tyre, conveyor belt etc. Different types of fractures studied include ductile, central burst, brittle, fatigue, torsion, corrosion, delamination and weld fractures. Fundamentals on specific characteristics of each type of fracture and their likely causes have been elaborately discussed Microscopic examination through scanning electron microscope (SEM) provides deeper insights of the fractured surface as well as microstructure of material. In addition to the fundamental aspects of fractures, examples of different types of fractured samples have been illustrated in this article. This focused review would be useful to the steel cord and bead wire manufactures as well as to tyre manufacturers for detailed failure investigation of material/product and thereby to take appropriate corrective measures.

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Section: Torsion Fracturementioning

confidence: 99%

A critical review on fractographic studies of steel cord and bead wire used in tyre reinforcement

Shilavant,

Samui,

Chanda

et al. 2023

Progress in Rubber, Plastics and Recycling Technology

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“…Under torsion deformation, principal planes are oriented at 45 • to the wire axis and the maximum shear stress occurs in planes perpendicular to the wire axis. Torsion failure of ductile materials appears as a flat break perpendicular to the wire axis, while delamination failure occurs with the initiation on a plane parallel to the wire axis giving a helix fracture [28,29]. Figure 5 shows a surface of cold drawn steel wire with a strain of 2.38 and fractured during a torsion test.…”

Section: Torsional Ductility and Work Hardeningmentioning

confidence: 99%

Effects of Wire Drawing and Annealing Conditions on Torsional Ductility of Cold Drawn and Annealed Hyper-Eutectoid Steel Wires

Jung

Park³

et al. 2020

Metals

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The effects of microstructural features on torsional ductility of cold drawn and annealed hyper-eutectoid steel wires were investigated. The patented wire rods were successively dry drawn to ε = 0.79 (54.7%) ~ 2.38 (90.7%). To examine the effects of hot-dip galvanizing conditions on torsional ductility, steel wires with ε = 1.95 were annealed at 500 °C for 30 s for ~1 h in a salt bath. In cold drawn wires, the number of turns to failure increased steadily, showing the maximum peak, and then decreased with drawing strain. During the post-deformation annealing at 500 °C, torsional ductility of steel wires decreased with annealing time, except for the rapid drop due to the occurrence of delamination for 10 s annealing. The decrease of the number of turns to failure would be attributed to the microstructural evolutions, accompanying the spheroidization and growth of cementite particles and the recovery of ferrite in cold drawn steel wires. From the relationship between microstructural evolution and torsional ductility, it was found that among microstructural features, the shape and orientation of lamellar cementite showed the significant effect on torsional ductility of cold drawn and annealed hyper-eutectoid steel wires.

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“…Tyre bead grade with Cu-coating was conventionally used for tyre making application [1] . During tyre making operation at tyre manufacturer company, wire failed frequently during bending operation at brittle manner.…”

Section: Introductionmentioning

confidence: 99%