Investigating the effects of various testing parameters on Cerchar abrasivity index and its repeatability
| Autor: | Hamit Aydın |
|---|---|
| Přispěvatelé: | Zonguldak Bülent Ecevit Üniversitesi |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
genetic structures education 02 engineering and technology Surface conditions 0203 mechanical engineering Abrasivity Statistical analyses Materials Chemistry Geotechnical engineering Repeatability Measurement method CAI Surfaces and Interfaces 021001 nanoscience & nanotechnology Condensed Matter Physics Surfaces Coatings and Films Rough surface 020303 mechanical engineering & transports Mechanics of Materials sense organs 0210 nano-technology Stylus West apparatus Stylus hardness |
| Zdroj: | Wear. :61-74 |
| ISSN: | 0043-1648 |
| DOI: | 10.1016/j.wear.2018.11.001 |
| Popis: | Cerchar abrasivity index (CAI) test is widely used to estimate the tool life and wear in various excavation equipment in mining and tunneling projects. The aim of this study is to analyze the effect of various factors related to the CAI testing procedure. Particularly, sensitivity of CAI results is investigated due to variation of certain testing parameters, including the type of apparatus used, wear flat measurement methods, specimen surface conditions and stylus hardness. Relationship between CAI and certain testing parameters, and its repeatability are also investigated through statistical analyses of a series of CAI tests results obtained from twenty-one selected rock specimens. Results: show little variation between the type of apparatus used and between the selected wear flat measurement methods. Nevertheless, there is a significant large variation in CAI values according to the changes in specimen surface conditions and the hardness of stylus used. The results show that with an increase in the hardness of the steel stylus the CAI values decrease differently in accordance with the rock type tested. © 2018 Elsevier B.V. 110M579 BAP-2012-17-11-04 The author would like to acknowledge the generous financial support given by TUBITAK ( 110M579 ) and Bulent Ecevit University ( BAP-2012-17-11-04 ). The author would like to thank Dr. Hasan Gercek and Dr. Olgay Yarali for their helpful advice on various technical issues examined in this study, and the reviewers and Jackie Capar for their valuable comments and suggestions to improve the quality of the manuscript. Also gratitude is extended to the technical staff of the Department of Mining Engineering at Zonguldak Bulent Ecevit University for their help during this study. |
| Databáze: | OpenAIRE |
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