Fatigue crack behaviour in mine excavator | Semantic Scholar
WebFatigue crack behaviour in mine excavator @inproceedings{Elwi2006FatigueCB, title={Fatigue crack behaviour in mine excavator}, author={Alaa E. Elwi and Yue Yin and Gilbert Y. Grondin}, year={2006} } A. Elwi, Yue Yin, G. …
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Excavator Operator Best Practice
WebNov 1, 1971 · The useful life of highly constrained welded structures subjected to cyclic loads often depends on the crack-propagation behavior of the material. Thus, to predict the service life of many structures and to establish safe inspection intervals, an understanding of the rate of fatigue-crack propagation in steel is required. Accordingly, an investigation …
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Catastrophic structural failure of excavator boom
WebFatigue crack growth behavior in weld-repaired high-strength mining equipments, lifting equipments, storage tanks, excavator buckets, high rise buildings and induced draft fans [1,2
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Fatigue life prediction of heavy mining equipment. Part 1: Fatigue …
WebNov 1, 2007 · Frequent fatigue failure of heavy mining equipment has created the need for fatigue life prediction of its cracked components. As the first step, field monitoring of a cable shovel boom
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Catastrophic structural failure of excavator boom
WebFatigue crack growth behavior in weld-repaired high-strength mining equipments, lifting equipments, storage tanks, excavator buckets, high rise buildings and induced draft fans [1,2
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Metals | Free Full-Text | Fatigue Crack Growth Behaviour and - MDPI
Weba fatigue crack to initiate and to subsequently grow large enough to produce failure. In crack propagation testing, fracture mechan ics methods are used to determine the crack growth rates of preexisting cracks under cyclic loading. Fatigue crack propagation may be caused by cyclic stresses in a benign environ
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Investigation of fatigue crack propagation behavior in steel fiber
WebJun 30, 2012 · Influence of hydrogen and frequency on fatigue crack growth behavior of Cr-Mo steel S. Matsuoka, Hiroyuki Tanaka, N. Homma, Y. Murakami Materials Science, Physics 2011 Fatigue tests on Cr-Mo steel quenched at 860°C and tempered at 580°C were carried out under the frequencies of 0.2, 2, and 20 Hz with specimens containing a small …
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Failure assessment of a weld-cracked mining excavator boom
WebSep 2, 2021 · This study investigates crack growth and stress intensity factors via finite element methods in linear elastic fracture mechanics. The procedure involves estimating stress intensity factors (SIFs), crack trajectory, and fatigue life, using two different softwares in both two and three-dimensional analyses. Crack modeling was done in a variety of …
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How to Assess Crack Failure | Machine Design
Webmine site capacity requirements, the bucket is designed to withstand standard digging practices. Unfortunately, mining excavators are sometimes subjected to misuse by an operator who may use the bucket for operations like lifting and repositioning the machine. Using the bucket in this way means the loads are directly opposite to the parameters
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Mines Safety Bulletin No. 160 - Department of Mines, Industry
WebCharacterization of fatigue-crack growth rates has been performed at 37°C on disc-shaped compact-tension samples, in environments of air, aerated deionized water, and aerated Hank s solution. Results indicate that, in fact, Nitinol has the lowest fatigue-crack growth resistance of metallic alloys currently used for implant-applications.
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Prediction of Fatigue Crack Growth Rate and Stress Intensity - Hindawi
WebNov 1, 1971 · The useful life of highly constrained welded structures subjected to cyclic loads often depends on the crack-propagation behavior of the material. Thus, to predict the service life of many structures and to establish safe inspection intervals, an understanding of the rate of fatigue-crack propagation in steel is required. Accordingly, an investigation …
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Application of fatigue
WebUsing an excavator as a rock breaker for prolonged periods acts as 'design change' or 'change in use.' Original Equipment Manufacturer (OEM) manuals may not provide adequate instruction for the use of the excavator with a rock breaker tool if it is used for a prolonged period. Postal address: Mineral House, 100 Plain Street, East Perth WA 6004
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Fatigue crack behaviour in mine excavator - Semantic Scholar
WebFatigue crack behaviour in mine excavator @inproceedings{Elwi2006FatigueCB, title={Fatigue crack behaviour in mine excavator}, author={Alaa E. Elwi and Yue Yin and Gilbert Y. Grondin}, year={2006} } A. Elwi, Yue Yin, G. …
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Engineering Fracture Mechanics
WebIn this paper, a case study of a small surface mining organization is presented. The goal is to highlight the fatigue risk management system implemented at the studied mine site. Mine safety personnel who were interviewed discuss the changes made to the infrastructure of the mine, to administrative areas such as the number of shifts and the use
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How to Assess Crack Failure | Machine Design
WebOct 19, 2021 · A fatigue crack path may be a powerful resource determining all the aforementioned features. For instance, roughness-induced crack closure (RICC) is attributed to crack path deflection, especially near the threshold range, at which a serrated or zigzag crack path is induced by microstructure-sensitive crack growth [ 2, 3, 4 ].
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Fatigue crack behaviour in mine excavator | ERA
WebFatigue crack behaviour in mine excavator. Author(s) / Creator(s) Elwi, Alaa-Eldin A. Yin, Yue; Grondin, Gilbert Y. Structural engineering report SER 265 | SER-ID SER265. Date created 2006; Subjects / Keywords. Mining machinery--Materials--Fatigue; Mine haulage--Equipment and supplies--Maintenance and repair; Type of Item Report; DOI https
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Fatigue Crack Behaviour in Mine Excavator
Webefforts of mine operators in reducing maintenance cost and increasing equipment reliability. The purpose of this research is to examine the crack management program at Syncrude and to optimize it using state-of-the-art technology. The research is conducted through collaboration with a research team from the Department of Civil & Environmental
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Operator Fatigue and Distraction | Cat | Caterpillar
WebMeasurement of fatigue crack propagation Four groups of E-CT specimens, (1) as-received HSLA specimens, (2) weld-repaired specimens without BL between the WM and PM, (3) weld-repaired specimens
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Mines Safety Bulletin No. 160 - Department of Mines, Industry
WebSep 2, 2021 · The fatigue life cycles in individual structures significantly vary, depending on crack path, though hole location is only slightly differentiated. The fatigue crack was still captivated to the hole, according to the simulations, so it could curve its path and grow toward the hole or merely deflect and propagate. (e) (a) (b) (c) (d) (e) (a) (b) (c)
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Fatigue Testing - ASM International
WebRecently a detailed interpretation of S-N curves generated from smooth specimen tests has become possible because of our increased understanding of the behaviour of very small cracks ie cracks growing to about 500 pm in depth, which can involve a high proportion of the fatigue lifetime at high endurances.
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