Fatigue failure of steel links operating as chain components in a heavy duty draw bench

Pantazopoulos, G.; Vazdirvanidis, Athanasios; Toulfatzis, Anagnostis; Rikos, Andreas

doi:10.1016/j.engfailanal.2009.04.005

Cited by 16 publications

(5 citation statements)

References 5 publications

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“…The formation mechanism of river patterns is based on the change of the fracture mode from mode I with an increasing component of mode III [15]. A typical fractograph of the cleavage fracture of a steel chain link is given in Figure 2a [18]. In Figure 2b, a quasi-cleavage is shown, observed in a tool steel gripper's teeth, where minute areas of plastic deformation are also evidenced [19].…”

Section: Low/limited Ductility Fracturementioning

confidence: 99%

A Short Review on Fracture Mechanisms of Mechanical Components Operated under Industrial Process Conditions: Fractographic Analysis and Selected Prevention Strategies

Pantazopoulos¹

2019

Metals

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An insight of the dominant fracture mechanisms occurring in mechanical metallic components during industrial service conditions is offered through this short overview. Emphasis is given on the phenomenological aspects of fracture and their relationships with the emergent fracture mode(s) with respect to the prevailed operating parameters and loading conditions. This presentation is basically fulfilled by embracing and reviewing industrial case histories addressed from a technical expert viewpoint. The referenced case histories reflected mainly the author's team expertise in failure analysis investigation. As a secondary perspective of the current study, selected failure investigation and prevention methodological approaches are briefly summarized and discussed, aiming to provide a holistic overview of the specific frameworks and systems in place, which could assist the organization of risk minimization and quality enhancement.

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Section: Low/limited Ductility Fracturementioning

confidence: 99%

A Short Review on Fracture Mechanisms of Mechanical Components Operated under Industrial Process Conditions: Fractographic Analysis and Selected Prevention Strategies

Pantazopoulos¹

2019

Metals

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“…[9][10][11]. A foundation stud supporting the base of a casting machine, fractured after a short period in service, leading to unexpected production interruption and machine downtime.…”

Section: Analytical Techniquesmentioning

confidence: 99%

“…Fractographic interpretation has been acknowledged for its significant impact to the society for many decades. Fractography is often used in combination with microstructurecharacterization techniques (light and scanning electron microscopy) in the majority of material failure analysis research projects [6][7][8][9][10][11]. Low-power stereomicroscopy (magnifications up to approximately 925), under vertical or oblique light illumination is the first approach in fracture evaluation, called macrofractography.…”

Section: Introduction and Background Informationmentioning

confidence: 99%

Damage Assessment Using Fractography as Failure Surface Evaluation: Applications in Industrial Metalworking Machinery

Pantazopoulos¹

2011

J Fail. Anal. and Preven.

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Fractography is a powerful analytic tool for the evaluation of failure surface topography and root-cause analyses. Fractography, embracing both light and electron optics methods, is utilized in modern failure analysis and is recognized by the engineering community as a unique process for industrial problem solving, evaluating machinery/component failures, and providing solutions for performance improvements. In the present study, the role of fractography is highlighted through characteristic failures of industrial machinery components. Low-power stereomicroscopy and Scanning Electron Microscopy (SEM) micro-fractography are the principal analytic tools that were used in the context of the present research.

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“…The crack propagation rate during stage III fracture is almost equal to of speed of sound in the material. Industrial parts and engine components, transmitting or receiving rotational motion, suffered from torsional and fatigue-type failures [2][3][4][5]. Undoubtedly, the majority of the mechanical failures of machine elements and components can be attributed to fatigue loading.…”

Section: Introduction and Background Informationmentioning

confidence: 99%

“…Fatigue damage is a progressive failure process that occurs under cyclic loading and is comprised of three distinct stages [1]: stage I is related to crack nucleation which generally occurs at 45°to the stress direction (slip plane fracture) [2]; stage II is progressive crack growth which occurs almost perpendicular to the stress up to the point that the remaining cross-sectional area is no longer able to sustain the applied load; and [3] stage III which is sudden overload fracture of the reduced cross section. The crack propagation rate during stage III fracture is almost equal to of speed of sound in the material.…”

Section: Introduction and Background Informationmentioning

confidence: 99%

Investigation of Fatigue Failure of Roll Shafts in a Tube Manufacturing Line

Pantazopoulos¹,

Zormalia²,

Vazdirvanidis³

2010

J Fail. Anal. and Preven.

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A failure analysis of steel shafts operating as roll components in a tube drawing machine was conducted. Visual inspection, optical microscopy, SEM fractography, and hardness testing were used as the principal analytical tools for the failure investigation. The findings showed that the failure mechanism is rotating bending fatigue under low stress-high stress concentration conditions. The primarily inadequate component design resulted in high stress concentration factors interacted with the soft annealed material used for the component and caused fatigue under the presence of fluctuating stresses.

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Fatigue failure of steel links operating as chain components in a heavy duty draw bench

Cited by 16 publications

References 5 publications

A Short Review on Fracture Mechanisms of Mechanical Components Operated under Industrial Process Conditions: Fractographic Analysis and Selected Prevention Strategies

A Short Review on Fracture Mechanisms of Mechanical Components Operated under Industrial Process Conditions: Fractographic Analysis and Selected Prevention Strategies

Damage Assessment Using Fractography as Failure Surface Evaluation: Applications in Industrial Metalworking Machinery

Investigation of Fatigue Failure of Roll Shafts in a Tube Manufacturing Line

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