The effect of the rock anisotropy on the efficiency of diamond wire cutting machines

Özçelik, Yılmaz; Yilmazkaya, E.

doi:10.1016/j.ijrmms.2011.04.006

Cited by 44 publications

(17 citation statements)

References 17 publications

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“…According to these studies, the energy consumed for cutting travertines parallel to the bedding planes was less than that consumed for cutting perpendicular to the planes (Ersoy et al, 2005). In this context, the relationships between the angles of the bedding planes and various variables (such as the strength of the rock , unit weight, cutting rate, specific energy, and vibration) were investigated and the efficiency of diamond wire cutting was found to be sensitive to the rock anisotropy, revealing that the cutting operations should be performed parallel to the bedding planes in terms of economics (Ozcelik and Yilmazkaya, 2011).…”

Section: Introductionmentioning

confidence: 99%

The effects of bedding directions on abrasion resistance in travertine rocks

Gökçe¹

2015

Turkish J Earth Sci

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IntroductionTravertines are widely used across the globe in building materials since they are found abundantly and have distinct decorative characteristics. They have had a broad range of use in architectural applications throughout history, including in government buildings, healthcare facilities, hotels, and restaurants. The Magna Graecia region (e.g., the Temple of Hera and the Temple of Segesta, Italy), Anatolia (e.g., Hierapolis, Turkey), and Rome are notable locations where remains of ancient travertinebuilt buildings can be found (Pedley, 2009). The architects of the Roman Empire used travertine in a number of celebrated buildings throughout its territory, especially in the city of Rome, such as the Temple of Concord, the Coliseum, the Ponte Sant' Angelo, and the Castel Sant' Angelo (Jackson et al., 2005;Pentecost, 2005). Local red travertine was used to build Spain's Roman Theater of Carthago Nova (Soler Huertas, 2005), while Hungary's aqueducts and amphitheaters in Budapest (Török, 2006a(Török, , 2006b are also some historic travertine-made buildings. The 17th century colonnades in St. Peter's Square in the Vatican, the 18th century Trevi Fountain in Rome, the 19th century Parliament Building in Budapest, and the 20th century monument to Victor Emmanuel II in Rome are some more recent examples of the architectural use of travertine in buildings. In the 20th and 21st centuries, Roman travertine was exported to the United States and used in the J. Paul Getty Museum Building in Los Angeles and the Lincoln Center in New York (Sidraba et al., 2004). Today, Turkey is one of the major suppliers of travertine to the United States and other countries.Travertines are hot-spring-sourced carbonate deposits characterized by high porosity, different colors, and a fine-grained banded structure. They are generally found in fault zones, in karstic caves, and around spring cones, being deposited by oozing or spring waters containing Ca 2+ and CO 3 2- (Pentecost, 2005). The use of travertine is closely related to its chemical, morphological, and industrial characteristics (Ayaz, 2002). The morphological characteristics are crucial for touristic purposes while the chemical and mechanical characteristics are important for industrial use (Wilson, 1979;Chafetz and Folk, 1984). Industrially, travertines can be used as building materials, especially for cladding and flooring purposes, as Abstract: Travertine rocks are currently used in various architectural applications, cut perpendicular or parallel to bedding planes. Travertine stones used without enough attention paid to the cutting directions easily wear off in locations where pedestrian traffic is heavy and can cause some unexpected complications in practice. This study was conducted to elucidate the effects of cutting directions on the abrasion resistance of travertine stones. Travertine blocks were cut perpendicular and parallel to bedding planes, and their abrasion resistances were determined by means of the Böhme abrasion loss test. Travertine blocks were chosen from 6 ...

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Section: Introductionmentioning

confidence: 99%

The effects of bedding directions on abrasion resistance in travertine rocks

Gökçe¹

2015

Turkish J Earth Sci

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“…Because the multiple-regression models (1) and (2) showed fair capability to manage non linearity as expressed by the data set, especially, in case of the cylindricity performance characteristic (HC), an ANN paradigm [35][36][37] was investigated to assess the fit and the predictability of such an alternative. The ANN model was developed as a ''Generalized Feed Forward Multi-Layer Perception network'' (GFF-MLP) with back propagation.…”

Section: Ann Model For the Cylindricity And Roughness Performancesmentioning

confidence: 99%

“…Rock cutting is a complex process since, among others reasons, a single rock property does not completely define the permeability of different types of rock; moreover, the damage behavior models of the processed rocks cannot be reliably encapsulated using conventional elastic-plastic models. Therefore, extensive research [1][2][3] has addressed the issues of rock processing theory, the machines/materials characterization, and the tools geometry. Marble stone is one of the most delicate materials when performing extraction operation as its structure is easily affected.…”

Section: Introductionmentioning

confidence: 99%

Assessment of cylindricity and roughness tolerances of holes drilled in marble using multiple regression and artificial intelligence

Abbassi

Trabelsi

Akrichi

et al. 2021

Advances in Mechanical Engineering

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The Calacatta-Carrara marble is widely used due to its excellent physico-chemical characteristics and attractive aspect. However, the sensitivity of this materiel, when performing delicate manufacturing operations, presents for the engineers a hard challenge to overcome. This issue is mainly encountered with complex shapes of parts, for which it is difficult to preserve surface integrity and avoid geometric defects. The paper aims at finding out optimal drilling parameters of cutting in the Calacatta-Carrara white marble material, in order to minimize the holes cylindricity (HC) and surface roughness (HR) using six controlled operating factors, namely, the rotation speed ( N), the feed speed ( F), the drill bit diameter (BD), the drill bit height (BH), the number of pecking cycles ( P), and the drilling depth (DD). The experimental design uses a [Formula: see text] fractional factorial plan that is replicated once for cost consideration. The optimization process, that is, minimum cylindricity and roughness tolerances, is carried out using the Gray Relational Analysis (GRA) technique. Numerical modeling of machining parameters is performed using Multi-Layer Perceptron Artificial Neural Network (MLP ANN) and Multiple Regression Model (MR) to predict surface quality. For the sake of completeness these two models were compared in terms of fitness and predictability. The models were assessed statistically using the correlation coefficient. Results showed that either solution predicts a roughness tolerance which is in good agreement with the test data (both R-sq.(adj.) and R-sq.(pred.) >94%). However, the holes cylindricity tolerance response was shown to be superior with MLP-ANN model (R-sq.(adj.) 50.64% and R-sq.(pred.) 48.67%). The GRA analysis shows that minimum cylindricity and roughness are met when N and F are set high, BD and BH low, P high and DD low.

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“…For this reason, they stated there may be variability in features like uniaxial compressive strength, exural strength and unit weight in the same production region, or even in the same quarry. Ozcelik and Yilmazkaya (2011) and Ersoy et al (2005) stated that diamond wire cutting was affected by anisotropy due to bedding and that cuts parallel to the bedding plane were more economic.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Anisotropic Structure of Travertine in Terms of Geological and Physico-Mechanical Properties: Sarıhıdır (Avanos-Nevşehir) Travertine Quarry

Kolay

Karakoç²,

Temiz

2022

Preprint

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Travertine is a sedimentary rock with generally layered structure, mainly comprising carbonate. They are used for different purposes in interior and exterior spaces by cutting parallel or perpendicular to the bedding according to use. Travertine may contain several facies linked to variations in conditions during formation. With these features, travertine is one of the rocks with anisotropy most commonly observed. In this study, the anisotropic structure due to facies and layering in travertine was investigated considering geological and engineering properties. The Sarıhıdır travertine quarry face was divided into four different zones with different features. Chemical, mineralogic, physical, index and mechanical properties of the samples taken from these zones were determined. During determination of engineering parameters, samples were prepared parallel and perpendicular to bedding. The source of the travertine is a mixture of limestone, dolomite, evaporite and ultramafic rocks and they have epigean character, though they were affected by the hypogean environment. It appeared there were textural differences between the zones, rather than differences in chemical and mineralogic composition. When travertine was cut parallel to layering, all zones were suitable for decoration and facing. Only T-4 zone samples cut parallel were useable for flooring and load-bearing elements. In terms of compression and abrasion resistance, T-4 zone was better than the other zones. The cut direction of the travertine samples is an important factor for physical and mechanical behavior. Samples cut parallel to layering were observed to provide better results. According to the results, it is recommended to use products from the same travertine zone side-by-side in structures and to consider the cutting direction for long life of the building and to prevent economic losses.

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The effect of the rock anisotropy on the efficiency of diamond wire cutting machines

Cited by 44 publications

References 17 publications

The effects of bedding directions on abrasion resistance in travertine rocks

The effects of bedding directions on abrasion resistance in travertine rocks

Assessment of cylindricity and roughness tolerances of holes drilled in marble using multiple regression and artificial intelligence

Investigation of the Anisotropic Structure of Travertine in Terms of Geological and Physico-Mechanical Properties: Sarıhıdır (Avanos-Nevşehir) Travertine Quarry

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