Results 31 to 40 of about 53,800 (254)

Crack Detection of Threaded Steel Rods Based on Ultrasonic Guided Waves

open access: yesSensors, 2022
Fatigue cracks are typical damage of threaded steel rods under dynamic loads. This paper presents a study on ultrasonic guided waves-based, fatigue-crack detection of threaded rods.
Kunhong Peng   +4 more
doaj   +1 more source

The fatigue damage evaluation of gear in sugarcane presser using higher order ultrasonic nonlinear coefficients

open access: yesResults in Physics, 2018
The fatigue damage of gear in sugarcane presser is one of the most common damages, which is very difficult to detect in sugar factory. The nonlinear ultrasonic technique is used to evaluate the fatigue damage of gear in this paper.
Hanying Mao   +6 more
doaj   +1 more source

Improving fatigue performance of surface-damaged Ti-6Al-4V alloy via ultrasonic surface rolling process [PDF]

open access: yesMATEC Web of Conferences, 2020
Surface damages caused by markings, like laser marking and mechanical marking are detrimental to the fatigue performance of the components. To improve the fatigue performance of laser marked or mechanical marked Ti-6Al-4V alloy, ultrasonic surface ...
Ao Ni, Liu Daoxin, Zhang Xiaohua
doaj   +1 more source

Review of Multiaxial Testing for Very High Cycle Fatigue: From ‘Conventional’ to Ultrasonic Machines

open access: yesMachines, 2020
Fatigue is one of the main causes for in service failure of mechanical components and structures. With the development of new materials, such as high strength aluminium or titanium alloys with different microstructures from steels, materials no longer ...
Pedro Costa   +6 more
doaj   +1 more source

Thermographic analysis in ultrasonic fatigue tests [PDF]

open access: yesFatigue & Fracture of Engineering Materials & Structures, 2006
ABSTRACTThree kinds of alloys used in the automotive industry for structures and engine components are subjected to very high cycle fatigue damage during working service. In the study, fatigue damage progression of the three kinds of alloys was investigated in the very high cycles fatigue regime by means of thermographic analysis.
Xue, Hongqian   +3 more
openaire   +3 more sources

The application of ultrasonic NDT techniques in tribology [PDF]

open access: yes, 2005
The use of ultrasonic reflection is emerging as a technique for studying tribological contacts. Ultrasonic waves can be transmitted non-destructively through machine components and their behaviour at an interface describes the characteristics of that ...
Anderson W.   +12 more
core   +1 more source

Very High Cycle Fatigue Behavior of Austenitic Stainless Steels with Different Surface Morphologies

open access: yesMetals, 2022
The fatigue behavior of the two austenitic stainless steels AISI 904L and AISI 347 with different surface morphologies, (i) conventionally turned and finally polished, (ii) cryogenic turned using CO2 snow, as well as (iii) cryogenic turned and finally ...
Marek Smaga   +3 more
doaj   +1 more source

Prediction of Fatigue Damage Evolution in 3D-Printed CFRP Based on Ultrasonic Testing and LSTM

open access: yesApplied Sciences
To address the prediction of fatigue damage for 3D-printed Carbon Fiber Reinforced Polymer (CFRP), this study used 3D-printing technology to fabricate CFRP specimens. Through multi-stage fatigue testing, samples with varying porosity levels were obtained.
Erzhuo Li   +5 more
doaj   +1 more source

Fatigue cracks detected and measured without test interruption [PDF]

open access: yes, 1966
Ultrasonic flaw detector records cracks in materials undergoing fatigue tests, without interfering with test progress.
Freche, J. C.   +2 more
core   +1 more source

Instantaneous baseline damage localisation using sensor mapping [PDF]

open access: yes, 2016
In this paper an instantaneously recorded baseline method is proposed using piezoelectric transducers for damage localisation under varying temperature.
Aliabadi, MH   +2 more
core   +1 more source

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