Results 41 to 50 of about 16,577 (270)

Mechatronic system for the hybrid machining of brittle hard materials

open access: yes, 2009
This paper deals with the development of an ultrasonic workpiece table for the machining of brittle-hard materials like glass, ceramics and carbide. Thereby the workpiece is moved with a frequency of about 20kHz and amplitudes of up to 15 microns.
Bernreiter, Johannes, Bleicher, Fritz
core   +4 more sources

Mechanically Enabled Two-Axis Ultrasonic-Assisted System for Ultra-Precision Machining

open access: yesMicromachines, 2020
With the use of ultrasonic-assisted diamond cutting, an optical surface finish can be achieved on hardened steel or even brittle materials such as glass and infrared materials.
Nan Yu   +3 more
doaj   +1 more source

Investigating the Effect of Inclination Angle and the Influence of Scan Parameters on the Appearance and Thermal and Mechanical Properties of Filigree Tension Rods of LPBF‐Manufactured NiTi Shape‐Memory Alloys

open access: yesAdvanced Engineering Materials, EarlyView.
This article investigates the dependence of the properties on the manufacturing orientation in the form of the inclination angle to the build plate of LPBF‐fabricated NiTi rods with a diameter of 150–220 µm. Metallographic, chemical, thermal, and mechanical characterization show behavior under identical manufacturing conditions that ranges from ...
Sandra Herzig   +2 more
wiley   +1 more source

Study status and future prospects on ultrasonic assisted grinding of hard and brittle materials

open access: yesJin'gangshi yu moliao moju gongcheng, 2020
Hard and brittle materials have some significant characteristics such as high strength, high hardness and low density.However, just because of high hardness and brittleness, great damage and low efficiency are the dramatic problems for these materials ...
DING Kai   +3 more
doaj  

Fabrication of Cylindrical Microlens by Femtosecond Laser‐Assisted Hydrofluoric Acid Wet Etching of Fused Silica

open access: yesAdvanced Photonics Research, 2023
Micro‐optical elements play a key role in various advanced devices, including biomedical, photovoltaic, 3D display, and optical communication devices. As one of the typical micro‐optical elements, cylindrical microlens (CML) can modulate the wavefront ...
Peichao Wu   +6 more
doaj   +1 more source

An Explicit Constitutive Reconstruction Framework for Mechanical Characterization of Miniaturized 3D‐Printed Specimens

open access: yesAdvanced Engineering Materials, EarlyView.
An explicit constitutive reconstruction framework enables accurate tensile characterization of miniaturized additively manufactured specimens using only the grip‐to‐grip displacement measurements. Progressive validation through self‐consistency, analytical comparison, and inverse finite element method (iFEM) benchmarking demonstrates constitutive ...
Junqing Leng   +4 more
wiley   +1 more source

Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials

open access: yesAdvanced Engineering Materials, EarlyView.
Adaptive foam 3D printing, enabled by expandable microspheres, imparts cellular structures to thermoplastic and thermosetting polymers, manufactured through a variety of processes including fused filament fabrication, direct ink writing, digital light processing, and inkjet printing.
Nariman Rajabifar, Amir Ameli
wiley   +1 more source

Estimating the tensile strength of super hard brittle materials using truncated spheroidal specimens

open access: yes, 2015
New approaches need to be introduced to measure the tensile capacity of super hard materials since the standard methods are not effective. To pursue this objective, a series of laboratory tests were constructed to replicate the fracture mechanism of ...
Williams, David J.   +2 more
core   +1 more source

Entropy‐Driven Design of Low‐Melting‐Point Alloys via Compositionally Complex Strategy

open access: yesAdvanced Engineering Materials, EarlyView.
Conventional low‐melting‐point alloys (LMPAs) are limited by a narrow compositional space and inherent property trade‐offs. This review presents an entropy‐driven design strategy that overcomes these limitations, ushering in a new class of low‐melting‐point compositionally complex alloys (LMCCAs).
Yinghui Shang   +6 more
wiley   +1 more source

Elid superfinishing of spherical bearings [PDF]

open access: yes, 2007
Driven by a requirement to extend the lifespan of self-aligning lined spherical bearings, this research investigates the use of Elid (electrolytic in-process dressing) as a method of improving ball surface finish.
Raffles, Mark H.
core   +5 more sources

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