Results 1 to 10 of about 83,305 (186)

A Data-Driven Framework for Early-Stage Fatigue Damage Detection in Aluminum Alloys Using Ultrasonic Sensors

open access: yesMachines, 2021
The paper presents a coupled machine learning and pattern recognition algorithm to enable early-stage fatigue damage detection in aerospace-grade aluminum alloys. U- and V-notched Al7075-T6 specimens are instrumented with a pair of ultrasonic sensors and,
Susheel Dharmadhikari   +3 more
doaj   +1 more source

Modeling and Testing on Material Removal Mechanism of Rotary Ultrasonic Machining

open access: yesDEStech Transactions on Materials Science and Engineering, 2017
The technology of rotary ultrasonic machining is the combination of regular ultrasonic vibration and rotation motion. It applies a pre-load on the tool through tool head with an axial direction vibration and high rotation motion along with the ultrasonic system.
Lin-lin LI, Yong-wei ZHU
openaire   +2 more sources

An ultrasonic approach for contact stress mapping in machine joints and concentrated contacts [PDF]

open access: yes, 2004
The measurement of pressure at a contact in a machine part is important because contact stresses frequently lead to failure by seizure, wear or fatigue.
Drinkwater, B.W.   +3 more
core   +1 more source

Human factor in a safety problem of high-duty welded objects

open access: yesAdvanced Engineering Research, 2016
The work goal is to study the human factor role in a safety problem of the ultrasonic testing of high-duty welded objects. The key objective and subjective factors determining the human reliability of the man-machine systems are analyzed.
Alexander S. Korobtsov   +1 more
doaj   +1 more source

Nanotailoring Stereolithography Resins for Unique Applications using Carbon Nanotubes [PDF]

open access: yes, 2005
Nanostructured materials and exploiting their properties in stereolithography (SL) may open new markets for unique rapidly manufactured functional devices.
Hernandez, A.   +6 more
core   +1 more source

Fretting Fatigue Behaviour of Alloy Steel in the Very High Cycle Region [PDF]

open access: yesMATEC Web of Conferences, 2019
It is well known that fretting fatigue strength is much lower than the fatigue strength of smooth specimens and the fatigue limit disappears. Many studies on fretting fatigue have been reported but most of the studies have not cover fatigue properties in
Shimamura Yoshinobu   +6 more
doaj   +1 more source

Effect of indirect ultrasonic activation of modified bioceramic materials on the bond strength and tubular penetration in root canals

open access: yesDental Research Journal, 2021
Background: To maintain the integrity of the interface between root canal filling and radicular dentin an ideal endodontic biomaterial should have good adhesion.
Bandaru Yamini   +5 more
doaj   +1 more source

Monitoring of lubricant film failure in a ball bearing using ultrasound [PDF]

open access: yes, 2006
A lubricant-film monitoring system for a conventional deep groove ball bearing (type 6016, shaft diameter 80 mm, ball diameter 12.7 mm) is described. A high-firequency (50 MHz) ultrasonic transducer is mounted on the static outer raceway of the bearing ...
Anderson   +21 more
core   +1 more source

A method for the measurement of hydrodynamic oil films using ultrasonic reflection [PDF]

open access: yes, 2004
The measurement of the thickness of an oil film in a lubricated component is essential information for performance monitoring and control. In this work, a new method for oil film thickness measurement, based on the reflection of ultrasound, is evaluated ...
Drinkwater, B.W.   +2 more
core   +1 more source

The effect of different cleansing methods for removing temporary cement on the tensile bond force of permanently cemented implant‐supported metal copings: An in vitro study

open access: yesClinical and Experimental Dental Research, 2022
Objectives Complete cleaning of temporary cement before permanent cementation of cement‐retained implant‐supported prosthesis (CISP) when recementing the crown is critical. This study evaluated the effect of different cleaning methods for removing traces
Behnaz Ebadian   +5 more
doaj   +1 more source

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