Results 41 to 50 of about 51,913 (299)

Performance Investigation of the Micro-Hole High-Speed Aerostatic Thrust Bearing Based on the Finite Element Method

open access: yesMachines
Micro-hole aerostatic bearings have emerged as critical components in ultra-precision machining systems, offering a superior load capacity, stiffness, and stability compared to traditional orifice-based designs.
Siyu Gao   +9 more
doaj   +1 more source

Enhanced Machining Performance of Micro Holes Using Electrochemical Discharge Machining with Super-High-Pressure Interior Flushing

open access: yesInternational Journal of Electrochemical Science, 2015
Micro-holes are widely used, and their machining process is vital to modern manufacturing, especially for materials that are difficult to machine. Tube electrode high-speed electrochemical discharge machining (ECDM) combines electrochemical machining ...
Yan Zhang   +3 more
doaj   +1 more source

Stability of temperature field in blood refrigerated warehouse using micro-hole air inlet

open access: yesZhongguo shuxue zazhi, 2022
Objective To study the effect of air inlet modes on the temperature variation, fluctuation, uniformity and coefficient of variation(CV), so as to evaluate the stability and uniformity of the temperature field in refrigerated warehouse for blood.
Xingzhi CHEN   +5 more
doaj   +1 more source

Inherent-opening-controlled pattern formation in carbon nanotube arrays [PDF]

open access: yes, 2007
We have introduced inherent openings into densely packed carbon nanotube arrays to study self-organized pattern formation when the arrays undergo a wetting–dewetting treatment from nanotube tips.
Elijah Sansom   +8 more
core   +1 more source

Experimental investigation of micro EDM drilling in the CFRP using response surface methodology

open access: yesFrontiers in Materials, 2023
Recently, most of the conventional (industrial) materials such as steel, aluminum, and copper are being replaced by composite materials. Among the various composite materials, CFRP material is one of the most popular materials in many industries due to ...
Nitish Kaushik   +2 more
doaj   +1 more source

Efficient Algorithms for Distributed Detection of Holes and Boundaries in Wireless Networks [PDF]

open access: yes, 2011
We propose two novel algorithms for distributed and location-free boundary recognition in wireless sensor networks. Both approaches enable a node to decide autonomously whether it is a boundary node, based solely on connectivity information of a small ...
Schieferdecker, Dennis   +2 more
core   +3 more sources

Duplex Stainless Steel Laser‐Surface Textured: Stability in Brine Solution

open access: yesAdvanced Engineering Materials, EarlyView.
Controlled laser‐surface treatment (LST) of duplex DSS2205 steel is performed to increase its stability in brine solution under cyclic electrochemical assays. The superior protection with respect to flat and smooth panels is attributed to the presence of FeCr2O4 as the main protective oxide layer in the LST surface, after corrosion tests. The stability
Mohammad Rezayat   +5 more
wiley   +1 more source

Piezoresistive Monitoring of Carbon Nanomaterial‐Reinforced Epoxy Composites Under Cyclic and Fatigue Loading: A Review

open access: yesAdvanced Engineering Materials, EarlyView.
Carbon nanomaterial‐reinforced epoxy composites exhibit pronounced piezoresistive behavior, enabling intrinsic damage sensing under cyclic and fatigue loading. This review critically compares carbon nanotube and graphene systems, correlating filler content, percolation threshold, and gauge factor with sensing stability and damage evolution.
J. M. Parente   +3 more
wiley   +1 more source

Plastic Deformation and Electrophysicochemical Treatment of Tubular Medical Concentrator Waveguides

open access: yesНаука и техника, 2020
Ultrasonic methods for eliminating vascular obstruction are widespread throughout the world. The advantages of such methods are the absence of surgical intervention, a low probability of complications, and a low cost of treatment.
Dai Wenqi   +3 more
doaj   +1 more source

Kesan latihan dalam perkhidmatan ke atas kualiti pengajaran dam pembelajran dalam bidang teknik dan vokasional [PDF]

open access: yes, 2006
Kajian ini bertujuan untuk mengenalpasti keberkesanan latihan dalam perkhidmatan yang dihadiri oleh guru-guru teknik dan vokasional dan sejauh mana hubungannya dengan keberkesanan pengajaran mereka dan pencapaian pelajar.
Razali, Hairani
core  

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