Concept

Drill bit

Related publications (35)

Evaluation of servo, geometric and dynamic error sources on five-axis high-speed machine tool

Many sources of errors exist in the manufacturing process of complex shapes. Some approximations occur at each step from the design geometry to the machined part. The aim of the paper is to present a method to evaluate the effect of high-speed and high dyn ...

2011

Surgical preparation of bone-scaffold interface is critical for bone regeneration inside tissue engineering scaffold

Dominique Pioletti, Alireza Roshan Ghias

The goal of this study was to investigate if the preparation of implantation site has an impact on bone formation inside tissue engineering scaffolds. For this purpose, two different drilling techniques were used to create a hole in distal femurs of rats b ...

Wiley-Blackwell2011

Effects of Process Parameters on Ultrasonic Micro-Hole Drilling in Glass and Ruby

Alain Schorderet, Kossi Agbeviade, Emmanuel Deghilage

Brittle materials such as ceramics, glasses and oxide single crystals find increasing applications in advanced micro-engineering products. Machining small features in such materials represents a manufacturing challenge. Ultrasonic drilling constitutes a pr ...

Amer Inst Physics, 2 Huntington Quadrangle, Ste 1No1 D, Melville, Ny 11747-4501 Usa2011

Biomechanical Aspects of Osteogenesis in Load-Bearing Tissue Engineering Scaffolds

Alireza Roshan Ghias

There is increasing evidence that mechanical stimulation affects the fate of tissue engineering scaffolds. In clinical situations, it is critical to accelerate bone formation inside the scaffold to reduce the recovery time and increase the chance of succes ...

EPFL2011

Measurement of acoustic attenuation in South Pole ice

Shirit Cohen, Mathieu Ribordy, Xiaoxia Bai

Using the South Pole Acoustic Test Setup (SPATS) and a retrievable transmitter deployed in holes drilled for the IceCube experiment, we have measured the attenuation of acoustic signals by South Pole ice at depths between 190 m and 500 m. Three data sets, ...

2011

Machine Tool Use Phase

Ioan Oliver Avram

This thesis is motivated from the fundamental decision problem in today's manufacturing industry which could be summarized as one simple question: how is it possible to achieve economic growth by taking advantage of the latest technologies while protecting ...

EPFL2010

Strengthening of flat slabs against punching shear using post-installed shear reinforcement

Aurelio Muttoni, Miguel Fernández Ruiz

A significant number of existing flat slabs currently require strengthening against punching shear for safety reasons (the increase of applied loads and deficiencies during design or construction) or to comply with more stringent code requirements. Availab ...

ACI Structural Journal2010

Toward a better understanding of glass gravity-feed micro-hole drilling with electrochemical discharges

Rolf Wüthrich

Spark-assisted chemical engraving (SACE) is a flexible, simple and inexpensive method for machining electrically non-conductive materials. SACE is particularly interesting because of the high drilling speed that can be achieved compared to other micromachi ...

Institute of Physics2009

FEM-based prediction of workpiece transient temperature distribution and deformations during milling

Paul Xirouchakis, Jitender Kumar Rai

In high-speed dry milling of thin-walled parts, the cutter-workpiece temperature rises asymptotically with cutting speed, causing excessive cutter tooth wear and workpiece thermal expansion, which in turn reduces the cutter life and produces dimensional an ...

Springer-Verlag2009

Contextual Modulation and Gestalt

Michael Herzog, Bilge Sayim

The perception of a stimulus can strongly be modified by its spatial context. For example, when a vernier stimulus is flanked by two lines, performance deteriorates compared to a vernier without flanks. This is usually explained by local interactions, such ...

2009

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