Results 1 to 10 of about 6,589 (215)

Fatigue Damage Evaluation of Compressor Blade Based on Nonlinear Ultrasonic Nondestructive Testing

open access: yesJournal of Marine Science and Engineering, 2021
Nonlinear ultrasonic testing is highly sensitive to micro-defects and can be used to detect hidden damage and defects inside materials. At present, most tests are carried out on specimens, and there are few nonlinear ultrasonic tests for fatigue damage ...
Pengfei Wang   +4 more
doaj   +1 more source

Dynamic frequency-dependent fatigue damage in metals: A state-of-the-art review

open access: yesForces in Mechanics, 2023
Ultrasonic high-frequency fatigue testing differs from conventional low-frequency fatigue testing in strain rate and cyclic loading. Ultrasonic fatigue has a resonance frequency of 20,000 Hz and a load frequency below 100 Hz. A large change in cycles per
Kamin Tahmasbi   +3 more
doaj   +1 more source

Heat Dissipation Behavior of a Low-Strength-Steel Welded Joint in Ultrasonic Fatigue

open access: yesMetals, 2022
The coupled effects of heat and frequency in very-high-cycle fatigue are known under ultrasonic testing, while the heat dissipation behavior of welded joints is less investigated.
Jiang-Tao Hu   +5 more
doaj   +1 more source

Design Theory and Experimental Research of Ultrasonic Fatigue Test

open access: yesMachines, 2022
Ultrasonic fatigue testing is a key technology that is more efficient and energy saving compared to conventional fatigue testing. In order to investigate the behavior of metallic materials at ultra-high frequencies and to verify the validity of ...
Ning Feng   +5 more
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

Ultrasonic fatigue experiments with biaxial cruciform specimens [PDF]

open access: yesMATEC Web of Conferences, 2019
Fatigue studies of materials in simple or complex loading systems for any given lifetime is object of continuous research. This is due to the advancements on mechanical and structural components, as well as for new and innovative materials, which implies
da Costa Pedro R.   +3 more
doaj   +1 more source

Research on Residual Life Estimation Method for KMN Steel Based on Nonlinear Ultrasonic Testing

open access: yesApplied Sciences, 2021
The testing of KMN steel bending fatigue with different cycles was carried out using a nonlinear ultrasonic detector to obtain its nonlinear coefficient. The experimental results show that the nonlinear coefficient first increases and then decreases with
Pengfei Wang   +3 more
doaj   +1 more source

Ultrasonic fatigue testing device under biaxial bending [PDF]

open access: yesFracture and Structural Integrity, 2016
A new fatigue testing device has been developed to test specimens under biaxial loading at 20 kHz. A flat smooth specimen with a disc geometry is placed on a torus frame and cyclically loaded at the center of its upper face.
C. Brugger   +3 more
doaj   +2 more sources

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

Crack initiation and propagation on the polymeric material ABS (Acrylonitrile Butadiene Styrene), under ultrasonic fatigue testing [PDF]

open access: yesFracture and Structural Integrity, 2015
Crack initiation and propagation have been investigated on the polymeric material ABS (Acrylonitrile Butadiene Styrene), under ultrasonic fatigue testing.
G. M. Domínguez Almaraz   +3 more
doaj   +2 more sources

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