Results 11 to 20 of about 353,031 (193)

Investigation of probing repeatability inside a micro-hole by changing probe approach direction for a local surface interaction force detection type microprobe

open access: yesFrontiers in Manufacturing Technology, 2023
The inner diameter measurement of the micro-hole was performed by a tactile microprobing system using a method of the local surface interaction force detection.
Masakazu Aruga   +4 more
doaj   +1 more source

Performance analysis of micro textured cutting insert design parameters on machining of Al-MMC in turning process

open access: yesInternational Journal of Lightweight Materials and Manufacture, 2021
Turning operation is one of the primary machining operations and enhanced machining performance is obtained by its process parameters. In turning process, heat is generated and it must be removed from the machining zone. Now a days, hydrocarbon oil based
S. Devaraj   +2 more
doaj   +1 more source

Microcanonical Description of (Micro) Black Holes [PDF]

open access: yesEntropy, 2011
The microcanonical ensemble is the proper ensemble to describe black holes which are not in thermodynamic equilibrium, such as radiating black holes. This choice of ensemble eliminates the problems, e.g., negative specific heat (not allowed in the canonical ensemble) and loss of unitarity, encountered when the canonical ensemble is used. In this review
CASADIO, ROBERTO, B. Harms
openaire   +4 more sources

Effects of Ambient Temperature on Nanosecond Laser Micro-Drilling of Polydimethylsiloxane (PDMS)

open access: yesMicromachines, 2022
In this research, effects of ambient temperature (−100 °C–200 °C) on nanosecond laser micro-drilling of polydimethylsiloxane (PDMS) was investigated by simulation and experiment.
Ya Lu   +5 more
doaj   +1 more source

MICRO BLACK HOLES IN THE LABORATORY [PDF]

open access: yesInternational Journal of Modern Physics E, 2011
The possibility of creating microscopic black holes is one of the most exciting predictions for the LHC, with potentially major consequences for our current understanding of physics. We briefly review the theoretical motivation for micro black hole production, and our understanding of their subsequent evolution.
Bleicher, M.   +3 more
openaire   +4 more sources

Simulation of Temperature Field in Micro-EDM Assisted Machining of Micro-Holes in Printed Circuit Boards

open access: yesMicromachines, 2022
High-speed mechanical drilling based on the micro-bit is the mainstream process technology for machining micro-holes in the printed circuit board (PCB). However, the above process to obtain PCB micro-holes is prone to defects, such as hole burrs and nail
Manqun Lian   +4 more
doaj   +1 more source

Detecting Bypassing Micro Black Holes

open access: yesJournal of Physics: Conference Series, 2021
Abstract Contemporarily, convincing evidence is lacking for the existence of micro black holes due to their small masses. In this paper, a specific situation is discussed in which a Schwarzschild micro black hole, with a mass of up to 1013 kg and hence the lifetime longer than the universe’s age flies towards the Earth with the typical ...
Haifeng Ding, Zichun Hao
openaire   +1 more source

Form measurements of micro-holes [PDF]

open access: yesMeasurement Science and Technology, 2007
The form measurement and gauge repeatability and reproducibility (R&R) of a micro-hole using a coordinate measurement machine (CMM) with a combination of optical and contact sensors were conducted in this study. The micro-holes, about 160 µm in diameter and 0.9 mm in depth, were fabricated using the electrical discharge machining process for diesel ...
Kao, Chen-Chun, Shih, Albert J.
openaire   +2 more sources

Optimizing the Structure of Micro-spray Tape to Improve Irrigation Uniformity

open access: yesGuan'gai paishui xuebao, 2023
【Objective】 Micro-spray irrigation is a common technology used for different purposes. The aim of this paper is to experimentally study how to improve spraying uniformity by optimizing the structure of the spray tapes.
LI Daoxi   +6 more
doaj   +1 more source

Effect of Laser Power on the Quality of Drilled Micro Hole Using Cu50Zr50 Amorphous Alloys Foils

open access: yesMicromachines, 2014
The rapid growth of the micro-electro-mechanical systems (MEMS) is being driven by the rapid development of the micro manufacturing processes. Laser beam machining is one of the micro manufacturing processes which can shape almost all ranges of ...
Chuan-Jie Wang   +3 more
doaj   +1 more source

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