Results 141 to 150 of about 589,315 (370)
Nondestructive test of regenerative chambers [PDF]
Flat panels simulating internally cooled regenerative thrust chamber walls were fabricated by electroforming, brazing and diffusion bonding to evaluate the feasibility of nondestructive evaluation techniques to detect bonds of various strength ...
Malone, G. A., Stauffis, R., Wood, R.
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, 2012 This article introduces the design, construction and applications of planar resonant devices for particle and cell manipulation. These systems rely on the pistonic action of a piezoelectric layer to generate a one dimensional axial variation in acoustic ...
Boltryk, Rosemary J. +2 more
core +1 more source
Performance Comparison of Surface Sensitizers for Diode Laser Powder Bed Fusion of Polyamide 12
Advanced Engineering Materials, EarlyView.Laser‐generated nanoparticles transform standard PA12 powders into high‐performance, dye‐free feedstocks for diode laser 3D printing. Despite identical absorbance at 808 nm, CuS, LaB6, and CB coatings reveal striking differences in fusion and strength—unlocking new design space for recyclable, industrial‐grade polymers.
Michael Willeke +9 more
wiley +1 more source
NDE: An effective approach to improved reliability and safety. A technology survey [PDF]
Technical abstracts are presented for about 100 significant documents relating to nondestructive testing of aircraft structures or related structural testing and the reliability of the more commonly used evaluation methods.
Carpenter, J. L., Jr., Stuhrke, W. F.
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Theory of Ultrasonic Intensity Gain Due to Concave Reflectors [PDF]
, 1949 Virginia Griffing, Francis E. Fox
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Ultrasonic Noise and the Volume of the Ultrasonic Pulse
, 1996 The ultrasonic inspection of large grained engineering materials such as titanium alloys is often limited in finding low reflectivity targets due to reflections from grain boundaries. These unwanted signals are often referred to as grain noise. Recently, experimental work was performed showing the effects of ultrasonic scan parameters on grain noise ...
Howard, P., Gilmore, R.
openaire +4 more sources
Advanced Engineering Materials, EarlyView.Prestraining the substrate influences coating formation process. Higher prestraining force leads to higher coating thickness and lower hardness. Increase in prestraining force enhances preliminary damage in hard anodic coating. Fatigue damage mechanisms change for hard anodized prestrained samples.
Linto George Thomas +4 more
wiley +1 more source
The liberation of cell-bound vaccinia virus by ultrasonic vibration [PDF]
, 1958 Ian Macpherson
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Mesoporous Silica Microspheres by Super‐Fast Alkaline Etching of Micrometer‐Sized Stöber Particles
Advanced Engineering Materials, EarlyView.Microscale silica particles are prepared along with a modified, scalable Stöber synthesis using the continuous addition of tetraethoxy silane to an ethanolic solution of ammonia with KCl. Etching with hydroxide ions at 95 °C gave porous analogs within minutes. Monodisperse particles are isolable in high yield after precipitation in ethanol.
Adrian Vaghar +2 more
wiley +1 more source