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ductile regime grinding brittle materials

  • Ductile-Regime Grinding: A New Technology for Machining

    This process is known as ductile-regime grinding. When brittle materials are ground through a process of plastic deformation, surface finishes similar to those achieved in polishing or lapping This process is known as ductile-regime grinding. When brittle materials are ground through a process of plastic deformation, surface finishes similar to those achieved in polishing or lapping are produced. Unlike polishing or lapping, however, grinding is a deterministic process, permitting finely controlled contour accuracy and complex shapes.Cited by: 1034
  • Ductile-Regime Grinding of Brittle Materials NIST

    Ductile-Regime Grinding of Brittle Materials. Published. January 1, 1997. Under appropriate conditions, brittle materials may be ground to produce surfaces with no observable fracture Ductile-Regime Grinding of Brittle Materials. Published. January 1, 1997. Under appropriate conditions, brittle materials may be ground to produce surfaces with no observable fracture damage. This chapter reviews the techniques for producing such surfaces and the mechanisms of material removal involved. ductile grinding, glassAuthor: Kenneth Blaedel, John S. Taylor, Christopher J. Evans
  • A review on the current research trends in ductile regime

    Feb 09, 2012· Ductile regime machining is an alternative method for polishing of brittle materials to obtain a high quality surface finish by a ductile or plastic material removal process. Hence, there is Ductile regime machining is an alternative method for polishing of brittle materials to obtain a high quality surface finish by a ductile or plastic material removal process. Hence, there is a growing interest to study ductile regime machining over several decades. This paper reviews current state of research and development in ductile regime machining. The research and development Cited by: 57
  • Ductile-regime machining model for ultrasonic elliptical

    Ultrasonic elliptical vibration cutting (UEVC) is attracting much attention in ultra-precision machining of brittle materials as it was found be able to effectively increase the critical depth of cut (d c) of Ultrasonic elliptical vibration cutting (UEVC) is attracting much attention in ultra-precision machining of brittle materials as it was found be able to effectively increase the critical depth of cut (d c) of brittle materials.However, the mechanisms for the increased d c are still not fully understood. In this study, a ductile-regime machining model was developed for the UEVC of brittleCited by: 2
  • Ductile or partial ductile mode machining of brittle materials

    For the ductile mode grinding of hard and brittle materials, the critical machining depth ranges from 50 nm to 1 m [20]. To perform 100% ductile mode machining of brittle materials, machine tools with For the ductile mode grinding of hard and brittle materials, the critical machining depth ranges from 50 nm to 1 m [20]. To perform 100% ductile mode machining of brittle materials, machine tools with high-accuracy servomechanisms (resolution 1.25–10 nm), high loop stiffness, and full flood
  • Ductile-Regime Grinding of Brittle Materials NIST

    Standard Reference Materials (SRMs) Standards.gov; Time Services; Office of Weights and Measures Ductile-Regime Grinding of Brittle Materials. Published. Machining of Ceramics and Standard Reference Materials (SRMs) Standards.gov; Time Services; Office of Weights and Measures Ductile-Regime Grinding of Brittle Materials. Published. Machining of Ceramics and Composites. Publisher Info. Marcel Dekker, Inc., New York, NY. Pub Type. Books. Keywords. brittle materials, ductile-regime, Grinding. Process measurement andAuthor: Kenneth Blaedel, Christopher J. Evans, John S. Taylor
  • T. G. Bifan o Department of Aerospace and Mechanical

    in the grinding of brittle materials. The results of this inves-tigation lend strong evidence in support of the ductile-regime grinding hypothesis. Also, a model is proposed, defining the brittle-to-ductile in the grinding of brittle materials. The results of this inves-tigation lend strong evidence in support of the ductile-regime grinding hypothesis. Also, a model is proposed, defining the brittle-to-ductile transition in terms of the material properties of the workpiece and the rate of material removal.
  • Ductile-regime machining model for diamond turning of

    Fig 1 Photograph of the ductile and brittle fracture on the machined shoulder. 145 x PRECISION ENGINEERING 1991 Butterworth- Heinemann 95 Blackley and Scattergood- Ductile-regime Fig 1 Photograph of the ductile and brittle fracture on the machined shoulder. 145 x PRECISION ENGINEERING 1991 Butterworth- Heinemann 95 Blackley and Scattergood- Ductile-regime machining model for diamond turning of brittle materials Blake',' focused on measuring ductility through the movement of the ductile-to-brittle transition as aCited by: 303
  • Ductile-Regime Grinding Of Brittle Materials: Experimental

    Jan 01, 1989· Ductile-regime grinding is a new technology made possible by the use of real-time control and precision engineering in the grinding process. By ensuring that the abrasive grinding Ductile-regime grinding is a new technology made possible by the use of real-time control and precision engineering in the grinding process. By ensuring that the abrasive grinding forces do not exceed a threshold value, it is possible to grind materials that are normally considered "brittle" in such a way that the material removal takes place through plastic deformation rather than fractureCited by: 69
  • Machining Brittle Materials Innovative Fabrication Inc.

    Ductile regime grinding is an effective machining process that has been used for brittle materials for several years now. In ductile regime grinding, material is removed through plastic deformation, Ductile regime grinding is an effective machining process that has been used for brittle materials for several years now. In ductile regime grinding, material is removed through plastic deformation, which reduces the risk of fractures and compromised materials. Regime grinding also eliminates or minimizes the need for polishing and lapping
  • Study of the material removal mechanism of glass-ceramics

    Apr 04, 2020· Glass-ceramics have many excellent properties and are widely used in various fields. During the grinding process, the workpiece surface is typically s

  • A Study of Mechanics in Brittle–Ductile Cutting Mode

    Jan 29, 2018· Brittle–ductile cutting mode transition is an important phenomenon in the ultra-precision machining of brittle materials [1,2,3,4]. Almost all the brittle materials could be machined in the ductile mode when the undeformed chip thickness ( t u n d e f o r m e d ) decreases to be sufficiently small, typically at submicron level [ 5,6,7 ].

  • A review on ductile mode cutting of brittle materials

    Brittle materials have been widely employed for industrial applications due to their excellent mechanical, optical, physical and chemical properties. But obtaining smooth and damage-free surface on brittle materials by traditional machining methods like grinding, lapping and polishing is very costly and extremely time consuming. Ductile mode cutting is a very promising way to

  • Specif ic grinding energy as an in-process control

    In ultraprecision grinding of brittle materials, the transition from ductile-regime grinding to brittle-regime grinding that results from an increasing grinding grain depth of cut is accompanied by a reduction in the specific grinding energy. Furthermore, as the grain depth of cut is increased beyond the transition point into purely

  • A review on the current research trends in ductile regime

    Ductile regime machining is an alternative method for polishing of brittle materials to obtain a high quality surface finish by a ductile or plastic material removal process. Hence, there is a growing interest to study ductile regime machining over several decades. This paper reviews current state of research and development in ductile regime machining. The research and

  • (PDF) Precision Grinding of Hard and Brittle Materials

    Ductile streaks produced during diamond grinding of hard and brittle materials have aided the subsequent process of polishing. Two novel techniques were used to study the formation of ductile mode

  • Scratching Test of Hard-Brittle Materials Under High

    Apr 01, 2000· This paper proposes machining under high hydrostatic pressure as a new damage-free machining method for hard-brittle materials. Experiments for this study utilized a specially designed scratching test device, and the pin-on-disc scratching tests were conducted with three (3) hard-brittle materials (i.e., silicon, glass, and quartz) under pressure of 400 MPa and zero

  • Machining Brittle Materials Innovative Fabrication Inc.

    Ductile regime grinding is an effective machining process that has been used for brittle materials for several years now. In ductile regime grinding, material is removed through plastic deformation, which reduces the risk of fractures and compromised materials. Regime grinding also eliminates or minimizes the need for polishing and lapping

  • ductile regime grinding brittle materials casaldigioia.it

    Ductile regime grinding, proposed by Bifano, is an important method for achieving high quality surfaces of hard brittle materials . Bifano also gave a theoretical description of the ductile grinding condition of different brittle materials, pointing out that ductileregime grinding could be achieved by a

  • Ductile Regime Grinding Brittle Materials

    A Review On The Current Research Trends In Ductile Regime . Ductile regime machining is an alternative method for polishing of brittle materials to obtain a high quality surface finish by a ductile or plastic material removal process Hence there is a growing interest to study ductile regime machining over several decades

  • Online force control of large optical grinding machine for

    However, all these data will change, as the grinding wheel becomes blunt. To reduce the work on the selection of grinding parameters and keep the grinding process stable, a new force-controlled grinding strategy for large optical grinding machine on brittle material is proposed.

  • Ductile-Regime Grinding Of Brittle Materials: Experimental

    Ductile-regime grinding is a new technology made possible by the use of real-time control and precision engineering in the grinding process. By ensuring that the abrasive grinding forces do not exceed a threshold value, it is possible to grind materials that are normally considered "brittle" in such a way that the material removal takes place through plastic deformation

  • Modeling of ductile-mode material removal in rotary

    In rotary ultrasonic machining of ceramic materials there exist two modes of material removal: brittle fracture mode and ductile mode. Two models were developed based on the assumption that the brittle fracture is the dominating mode of material removal, and

  • IJAT Vol.14 p.253 (2020) Fuji Technology Press: academic

    Aug 15, 2019· Effect of Tool Rake Angle and Crystal Orientation on Ductile Mode Cutting of Hard/Brittle Materials Abdallah Abdelkawy *, Masahiko Yoshino **,†, and Yuki Nakagawa ** * Cairo University Gamaa Street, Giza 12613, Egypt ** Tokyo Institute of Technology, Tokyo, Japan † Corresponding author

  • Specif ic grinding energy as an in-process control

    In ultraprecision grinding of brittle materials, the transition from ductile-regime grinding to brittle-regime grinding that results from an increasing grinding grain depth of cut is accompanied by a reduction in the specific grinding energy. Furthermore, as the grain depth of cut is increased beyond the transition point into purely

  • Ductile regime turning at large tool feed

    exist in industrial application of ductile regime turning. One of those problems is severe wear of diamond tools because most brittle material has a higher hardness than metal [1]. Tool wear not only raises machining cost, but also degrades product quality. Most available literature on ductile regime turning is

  • Ductile Mode Machining of Glass (Glass Cutting)

    Jul 22, 2014· Introduction Background and Scope of Ductile Mode Machining of Glass Glass a brittle material. Very difficult to machine material. Functional material for optics and electronics. Conventional grinding process causes surface damages. For better surface finish glass must be machined in ductile

  • Recent developments in grinding of advanced materials

    2 Grinding of brittle materials Many advanced materials such as ceramics, silicon and optical glass are hard and brittle materials. Since 1980s, ductile regime grinding of brittle materials has been and is continuing to be an intensive research area because of its

  • Surface Integrity Control During The Precision Machining

    Mar 29, 2006· Diamond turning, precision grinding, ductile regime machining, surface integrity. Ductile Machining of Brittle Materials. Hard and brittle materials such as glasses and ceramics are amongst the most difficult to machine.

  • CiteSeerX — Materials

    This process is known as ductile-regime grinding. When brittle materials are ground through a process of plastic deformation, surface finishes similar to those achieved in polishing or lapping are produced. Unlike polishing or lapping, however, grinding is a deterministic process, permitting finely controlled contour accuracy and complex shapes.

  • Modeling of ductile-mode material removal in rotary

    In rotary ultrasonic machining of ceramic materials there exist two modes of material removal: brittle fracture mode and ductile mode. Two models were developed based on the assumption that the brittle fracture is the dominating mode of material removal, and were published previously.

  • Online force control of large optical grinding machine for

    However, all these data will change, as the grinding wheel becomes blunt. To reduce the work on the selection of grinding parameters and keep the grinding process stable, a new force-controlled grinding strategy for large optical grinding machine on brittle material is proposed.

  • A Study of Mechanics in Brittle–Ductile Cutting Mode

    Jan 29, 2018· Brittle–ductile cutting mode transition is an important phenomenon in the ultra-precision machining of brittle materials [1,2,3,4]. Almost all the brittle materials could be machined in the ductile mode when the undeformed chip thickness ( t u n d e f o r m e d ) decreases to be sufficiently small, typically at submicron level [ 5,6,7 ].

  • Ductility (Earth science) Wikipedia

    The transition zone occurs at the point where brittle strength equals ductile strength. In glacial ice this zone is at approximately 30 m (100 ft) depth. Not all materials, however, abide by this transition. It is possible and not rare for material above the transition zone to deform ductilely, and for material below to deform in a brittle manner.

  • How is it decided that the yield stress is the limiting

    There is a very good practical reason for taking the yield stress as the limit for failure. It is the point at which significant plastic deformation has begun, which means that a load-bearing component will permanently lose its shape under that st.

  • Ductile regime grinding of glass and other brittle

    1 November 1990 Ductile regime grinding of glass and other brittle materials by the use of William J. Wills-Moren, Keith Carlisle, Patrick A. McKeown, and Paul Shore "Ductile regime grinding of glass and other brittle materials by the use of ultrastiff high stiffness CNC grinding machines for ductile mode grinding Proceedings of SPIE

  • Ductile and brittle transition behavior of titanium alloys

    Cutting a groove with tilted angle was a common methodology for determining the deformation regime of brittle materials in R. O. Ductile-regime grinding: a new technology for machining brittle

  • material grinding brittle digihulp.be

    Machining Brittle Materials Innovative Fabrication Inc. Ductile regime grinding is an effective machining process that has been used for brittle materials for several years now. In ductile regime grinding, material is removed through plastic deformation, which reduces the risk of fractures and compromised materials.

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