Results 61 to 70 of about 328 (171)

Very High Cycle Fatigue Performance of Ductile Cast Iron With Different Microstructures

Fatigue &Fracture of Engineering Materials &Structures, Volume 48, Issue 9, Page 3950-3966, September 2025.
ABSTRACT The very high cycle fatigue performance of four ductile cast irons, a solid solution strengthened ferritic, ferritic‐pearlitic, and two austempered ductile cast irons, was investigated by ultrasonic fatigue testing under fully reversed loading conditions. The step‐stress fatigue testing method incorporating re‐use of runouts was employed, with
Max Ahlqvist, Kenneth Weddfelt, Daniel Leidermark, Viktor Norman   +3 more
wiley   +1 more source

Effect of Stress Ratio on Very High Cycle Fatigue Properties of PM‐HIPed Inconel 625

Fatigue &Fracture of Engineering Materials &Structures, Volume 48, Issue 8, Page 3593-3610, August 2025.
ABSTRACT This study investigated the impact of stress ratio on the fatigue performance and fatigue crack initiation characteristics of PM‐HIPed Inconel 625 in the very high cycle regimes. Ultrasonic fatigue tests, operating at a frequency of 20 kHz, were conducted on PM‐HIPed Inconel 625 samples under stress ratios of R = −1 and 0.1 up to the ultimate ...
Faezeh Javadzadeh Kalahroudi, Dimitrios Nikas, Tomas Berglund, Mikael Grehk   +3 more
wiley   +1 more source

Fatigue performance criteria for CFRP Reinforcements Based on RC behavior in civil construction

Journal of Asian Architecture and Building Engineering
This study aims to develop fatigue performance criteria for Carbon Fiber Reinforced Polymer (CFRP) reinforcements, considering the mechanical behavior of Reinforced Concrete (RC) structures. Fatigue tests were conducted to create S-N and ε-N curves based
Young-Jun Bae, Viriavudh Sim, Sang-Moon Lee, Woo-Young Jung   +3 more
doaj   +1 more source

Influence of defects on the very high cycle fatigue behaviour of forged aeronautic titanium alloy

MATEC Web of Conferences, 2014
This paper is focused on fatigue failure of forged aeronautic titanium alloy Ti-6Al-4Mo under VHCF loading. Continuous fatigue tests were carried out in gigacycle fatigue regime (up to on 1010 cycles) on specimens machined from real aircraft compressor ...
Nikitin Alexander, Palin-Luc Thierry, Shanyavskiy Andrey, Bathias Claude   +3 more
doaj   +1 more source

Fractographic Analysis and Fatigue Behavior of Additively Manufactured Ni‐Superalloy Components with Post Processing Heat Treatment and Hot Isostatic Pressing

Advanced Engineering Materials, Volume 27, Issue 12, June 2025.
A study of mechanical properties and fractography of PBF‐LB/M‐built Inconel 718, performing heat treatments and hot‐isostatic pressing, is presented. Ultimate tensile strength and fatigue behavior are evaluated, examining differences in maximum load behavior, elongation, and regimes of fatigue.
David Sommer, Ben Truetsch, Cemal Esen, Ralf Hellmann   +3 more
wiley   +1 more source

Waste to Wealth: Electrochemical Innovations in Hydrogen Production From Industrial Wastewater

Global Challenges, Volume 9, Issue 6, June 2025.
There is increasing worry regarding the environmental impact of waste from hospital sewage, agricultural runoff, and industrial wastewater. Those wastes can contaminate water ecosystems, harming both human health and aquatic life. By employing an electrochemical method, we can treat these toxic substances in wastewater while simultaneously producing ...
Tesfaye Alamirew Dessie, Lemlem Seyoum Seifu, Woldesenbet Bafe Dilebo   +2 more
wiley   +1 more source

Impact of bridge‐specific manufacturing conditions on fatigue of welded joints

Steel Construction, Volume 18, Issue 2, Page 89-98, May 2025.
Abstract Box girders with steel cantilevers are often used in the design of composite steel bridges. The welded joints between the main girder and the transverse system are exposed to fatigue loading. Manual welds are common for which the manufacturing conditions can vary in terms of welding position and environmental settings. It is therefore intended
Raphael Erlemann, Karsten Geißler
wiley   +1 more source

Comparability of Fatigue Strength and Life Estimation of a CF‐PEKK Composite Under Low and Ultrasonic Frequencies Using Time‐Temperature‐Based Approaches

Fatigue &Fracture of Engineering Materials &Structures, Volume 48, Issue 5, Page 2363-2380, May 2025.
ABSTRACT Predicting very high cycle fatigue (VHCF) life in composites is challenging due to the lengthy testing times required by traditional methods. Ensuring compatibility between VHCF and high cycle fatigue (HCF) data presents an additional challenge.
Aravind Premanand, Hanna Schimmelpfeng, Frank Balle   +2 more
wiley   +1 more source

Cyclic deformation behavior of a medium carbon steel in the VHCF regime

Procedia Engineering, 2010
AbstractAt the Institute of Materials Science and Engineering an ultrasonic testing facility (UTF) for the fatigue assessment in the very high cycle fatigue (VHCF) regime was developed. The UTF allows to control the test and to measure process parameters like generator power and specimen temperature.
Koster, M., Wagner, G., Eifler, D.
openaire   +1 more source

Assessing the Very High Cycle Fatigue Behavior and Frequency Effect of Structural Steel Welds

Fatigue &Fracture of Engineering Materials &Structures, Volume 48, Issue 4, Page 1529-1541, April 2025.
ABSTRACT The very high cycle fatigue behavior of S275J2+N flux‐core arc welded joints was investigated using the ultrasonic fatigue testing method at a loading frequency of 20 kHz. A bespoke specimen design featuring the weld toe was employed to more suitably represent in‐service welded joints than typical ultrasonic fatigue testing specimens.
Andrew England, Yevgen Gorash, Athanasios Toumpis   +2 more
wiley   +1 more source