Results 81 to 90 of about 63,195 (336)

Powder Optimization Strategies for Binder Jetting Printing of BaTiO3 and Ba0,6Sr0,4TiO3 Ceramics

open access: yesAdvanced Engineering Materials, EarlyView.
Powder optimization is investigated to enable binder jetting of BaTiO3 and Ba0.6Sr0.4TiO3 ferroelectric ceramics. The antagonistic relationship between flowability and binder compatibility is addressed through binder impregnation of granulated powders and fumed silica addition to fine powders.
Fanny Pruvost   +4 more
wiley   +1 more source

A micro ultrasonic motor using a micro-machined cylindrical bulk PZT transducer [PDF]

open access: yes, 2006
In this paper, a micro ultrasonic motor using a micro-machined bulk piezoelectric transducer is introduced. The cylindrical shaped bulk piezoelectric transducer, a diameter of 0.8 mm and a height of 2.2 mm, was developed as stator transducer for ...
Morita, Takeshi   +5 more
core   +1 more source

Non-Destructive Testing of Composites by Ultrasound, Local Defect Resonance and Thermography

open access: yesProceedings, 2018
Different non-destructive testing techniques have been evaluated for detecting and assessing damage in carbon fiber reinforced plastics: (i) ultrasonic C-scan, (ii) local defect resonance of front/back surface and (iii) lock-in infrared thermography in ...
Mathias Kersemans   +4 more
doaj   +1 more source

Pyramidal Structures on Yttria‐Stabilized Zirconia after High Temperature Exposure at 1500°C: New Features on an Old Material

open access: yesAdvanced Engineering Materials, EarlyView.
New features on yttria‐stabilized zirconia after exposure at 1500°C: Newly discovered pyramidal structures on an old material. After exposure at 1550°C on the cross section of YSZ new features, namely pyramidal structures are discovered. These structures grow with time, increase in numbers, appear as singularities, are often arranged in strings, and ...
Doris Sebold   +2 more
wiley   +1 more source

Position and velocity recovery from independent ultrasonic beacons

open access: yes, 2006
In this paper we present a study on how to estimate the position of a mobile receiver using ultrasonic beacons fixed in the environment. Unlike traditional approaches, the ultrasonic beacons are independent, and positioning is performed by measuring the ...
Wilson, RE   +3 more
core  

Broadband Ultrasonic Location Systems for Improved Indoor Positioning [PDF]

open access: yes, 2006
Ultrasonic location systems are a popular solution for the provision of fine-grained indoor positioning data. Applications include enhanced routing for wireless networks, computer-aided navigation, and location-sensitive device behavior. However, current
Mike Hazas   +3 more
core  

Additive Manufacturing of Continuous Fibre Reinforced Composites: Process, Characterisation, Modelling, and Sustainability

open access: yesAdvanced Engineering Materials, EarlyView.
Additive manufacturing provides precise control over the placement of continuous fibres within polymer matrices, enabling customised mechanical performance in composite components. This article explores processing strategies, mechanical testing, and modelling approaches for additive manufactured continuous fibre‐reinforced composites.
Cherian Thomas, Amir Hosein Sakhaei
wiley   +1 more source

Index-based triangulation method for efficient generation of large three-dimensional ultrasonic C-scans

open access: yes, 2018
The demand for high-speed ultrasonic scanning of large and complex components is driven by a desire to reduce production bottlenecks during the non-destructive evaluation (NDE) of critical parts.
Summan R.   +4 more
core   +1 more source

直齿圆柱齿轮内部缺陷的超声自动检测

open access: yesJixie chuandong, 2013
The internal flaws in gearswhich occur during manufacturing and service have great effect on operation safety of equipments.A scheme of automatic ultrasonic testing based on the XYmotion platformis presented,and the corresponding automatic ultrasonic ...
吕铎, 杨岳, 李雄兵, 刘希玲
doaj  

Assessing the compression after impact behaviour of innovative multifunctional composites

open access: yesNanomaterials and Nanotechnology, 2016
In the present work, the synergistic effect of multiwalled carbon nanotubes and glycidyl polyhedral oligomeric silsesquioxanes on the compression after impact behaviour of multifunctional carbon fibre–reinforced epoxy composite plates is investigated ...
Spyros G Pantelakis   +2 more
doaj   +1 more source

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