Results 131 to 140 of about 589,315 (370)

Portable ultrasonic wattmeter for ultrasonic prob calibration

2016 Medical Technologies National Congress (TIPTEKNO), 2016
In our country, in many different brands and types of ultrasound devices are used very intensely in the health sector. However, these ultrasound devices do not pass a mandatory/legal or voluntarily technical measurements /controls. In order to verify the indicated performance and safety of the ultrasonic probes that is the most important part of ...
Karaboce, Baki, Ozdingis, Mithat, Durmus, Huseyin Okan, Cetin, Emel   +3 more
openaire   +3 more sources

Quality Enhancement of Laser Powder‐Bed Fusion Parts by Acoustically Assisted Additive Manufacturing by Laser Powder‐Bed Fusion and its Application to Lattice Structures

Advanced Engineering Materials, EarlyView.
Additive manufacturing technologies like laser powder‐bed fusion offer great design freedom and individualization of products down to a batch size of one. However, parts fabricated with this technology suffer from poor quality. Acoustic assistance during the build process can minimize these drawbacks.
Oliver Maurer, Dirk Bähre
wiley   +1 more source

Infective endocarditis following transcatheter mitral valve-in-valve replacement: a clinical case report

BMC Cardiovascular Disorders
Background Transcatheter valve-in-valve replacement (TMViVR) is an alternative option for patients with bioprosthetic valve failure (BVF) who are at high surgical risk.
Jing-Wei Zhang, Si-ying Liao, Jie Li, Feng-Juan Yao   +3 more
doaj   +1 more source

Evidence for Anisotropy of the Superconducting Energy Gap from Ultrasonic attenuation [PDF]

, 1959
R. W. Morse, T. Olsen, J. D. Gavenda
openalex   +1 more source

Influence of Testing Temperature on the Mechanical Performance of Brazed Conventionally and Additively Manufactured 316L Stainless Steel Joints

Advanced Engineering Materials, EarlyView.
This study reports for the first time the mechanical properties of brazed joints featuring Additively manufactured parts, such parts will likely need to be joined or combined with other components, and brazing offers a way of doing this for complex shapes without distortion. A new shear test methodology developed for such joints is also described.
Frances Livera, Raphaël Charvet, Neil Hind, Sophie Barwick, Dennis Premoli, Iain Todd, Andreas Mortensen, Russell Goodall   +7 more
wiley   +1 more source

Scattering of Ultrasonic Radiation in Polycrystalline Metals [PDF]

, 1948
Wilfred Roth
openalex   +1 more source

Residual Stress States in Microstructurally Graded PBF–LB/M Austenitic Steel Components

Advanced Engineering Materials, EarlyView.
This study examines microstructurally graded 316L rectangular tube profiles fabricated via PBF–LB/M using a dual‐laser system. A 1 kW top‐hat and a 400 W Gaussian laser create distinct grain sizes and crystallographic texture. Mechanical properties are linked to microstructural evolution driven by processing conditions.
Nico Möller, Florian Loebich, Thomas Wegener, Julia Richter, Jens Gibmeier, Thomas Niendorf   +5 more
wiley   +1 more source

Some problems in the propagation of ultrasonic waves of finite amplitude in liquids [PDF]

, 1959
L. K. Zarembo, V. A. Krasilnikov
openalex   +1 more source

Preparation and Thermal Modification of Disentangled Ultrahigh‐Molecular‐Weight Polyethylene Particles for Powder‐Based Additive Manufacturing

Advanced Engineering Materials, EarlyView.
Ultrahigh‐molecular‐weight polyethylene powders (<≈40 μm) with a bulk density of 260 g L−1 are prepared from a silica supported bisimine pyridine iron catalyst. The nascent product is disentangled and can be thermally densified without loss of its low viscosity.
Adrian Vaghar, Georgij Jegorenkov, Yunus Kutlu, Andreas Ostendorf, Gerrit A. Luinstra   +4 more
wiley   +1 more source

Measurements of Ultrasonic Absorption in Various Mixtures of Nitrobenzene [PDF]

, 1951
Daniele Sette
openalex   +3 more sources