Results 11 to 20 of about 7,801 (296)
Ultrasonic Fatigue Testing in the Tension-Compression Mode. [PDF]
J Vis Exp, 2018 Ultrasonic fatigue testing is one of a few methods which allow investigating fatigue properties in the ultra-high cycle region. The method is based on exposing the specimen to longitudinal vibrations on its resonance frequency close to 20 kHz. With use of this method, it is possible to significantly decrease the time required for the test, when ...
Trško L, Nový F, Bokůvka O, Jambor M.
europepmc +4 more sources
Ultrasonic fatigue testing of structural steel welded joints [PDF]
, 2023 In order to evaluate fatigue properties within the very high cycle fatigue (>107 cycles) regime in a feasible timeframe, ultrasonic fatigue testing is necessary. This involves exciting specimens at their natural frequency of 20 kHz.
Toumpis, A., England, A., Gorash, Y.
core +2 more sources
QT steel High Cycle Fatigue Testing with Ultrasonic
Rakenteiden Mekaniikka, 2017 This article describes the fatigue testing of QT steel in ultrasonic frequencies. Different possibilities, challenges and prejudices are reviewed.
Joona Vaara +17 more
core +4 more sources
Cruciform specimen’s analysis and experiments in ultrasonic fatigue testing [PDF]
, 2018 The reliability of any given structure or machine subjected to dynamic loads is mainly dependent on the detailed fatigue study of the applied materials.
Costa, P.R. +4 more
core +1 more source
Ultrasonic fatigue testing of thin MP35N alloy wire
Procedia Structural Integrity, 2016 MP35N (35 % Co, 35 % Ni, 20 % Cr, 10 % Mo; weight fraction) in the form of thin wires (100 µm diameter) is commonly used as conductors in cardiac leads, which require excellent corrosion resistance and high fatigue strength, in particular in the very ...
Mayer, H. +4 more
core +2 more sources
Dynamic frequency-dependent fatigue damage in metals: A state-of-the-art review
Forces 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
Metals, 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
Research on Residual Life Estimation Method for KMN Steel Based on Nonlinear Ultrasonic Testing
Applied 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
A Novel Model of Ultrasonic Fatigue Test in Pure Bending
Materials, 2022 The very high cycle fatigue (VHCF) failure of in-service components is mainly caused by the vibration of thin-wall elements at a high frequency. In this work, a novel model of ultrasonic fatigue test was developed to test thin-wall material in bending up to VHCF with an accelerated frequency.
Dongtong Yang +10 more
openaire +2 more sources
Ultrasonic fatigue testing device under biaxial bending [PDF]
Fracture 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