Results 61 to 70 of about 69,238 (318)

A multiscale finite element approach to analyse the effect of shot peening-induced surface roughness on fretting fatigue crack initiation

Results in Engineering
Shot peening (SP) is a widely used surface treatment technique that enhances the mechanical performance of materials, notably improving fatigue resistance by inducing compressive residual stresses (RS) and modifying surface characteristics.
Chao Li, Sutao Han, Can Wang, Auezhan Amanov, Lihua Wang, Magd Abdel Wahab   +5 more
doaj   +1 more source

Time to failure prediction in rubber components subjected to thermal ageing: A combined approach based upon the intrinsic defect concept and the fracture mechanics [PDF]

, 2014
In this contribution, we attempt to derive a tool allowing the prediction of the stretch ratioat failure in rubber components subjected to thermal ageing.
NAÏT-ABDELAZIZ, M, MARQUE, Gregory, BEN HASSINE, Mouna, COLIN, Xavier, MARQUE, G, Tourcher, C., Marque, G., Naït-Abdelaziz, M., TOURCHER, C, ZAÏRI, F, Zaïri, F.   +10 more
core   +1 more source

Recycling of NiTi Shape Memory Alloys: Fundamental and Technological Aspects of a Vacuum Induction Melting Processing Route

Advanced Engineering Materials, EarlyView.
The present study investigates recycling of NiTi shape memory alloys via vacuum induction melting. An ingot was synthesized from elemental Ni and Ti and subjected to three subsequent remelting cycles. Remelting increases process durations and impurity levels and adversely affects microstructures and functional properties.
Sakia Sophia Noorzayee, Son Tung Mai, Sarath Menon, Braulio Gadiel Sánchez Ortega, Ralf Drautz, Alexander Kauffmann, Gunther Eggeler, Jan Frenzel   +7 more
wiley   +1 more source

Fatigue and short crack assessment of powder bed fusion laser-based fabricated AlSi10Mg miniature specimens under alternating bending load

Materials & Design
Al-Si alloys are commonly used in the automotive and aircraft industry because of their excellent strength-to-weight ratio. Due to the laser powder bed fusion manufacturing process, inhomogeneous cooling affects the microstructure as well as defect ...
Sebastian Stammkötter, Jochen Tenkamp, Mirko Teschke, Kai Donnerbauer, Alexander Koch, Timo Platt, Dirk Biermann, Frank Walther   +7 more
doaj   +1 more source

Lifetime predictions of prestressed concrete bridges

, 2021
The residual structural lifetime of concrete bridges is often limited by fatigue of the prestressing steel. In practice, numerical calculations of the structure are combined with Miner's rule — based on load frequencies and stress amplitudes — to ...
Sanio, David (Dr.-Ing.), Mark, Peter (Univ.-Prof. Dr.-Ing. habil.), Ahrens, Mark Alexander (Dr.-Ing.)   +2 more
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Experimental Characterization and Constitutive Modeling of the Effect of Prior Inelastic Strain on the Viscoplastic Behavior of AD730 at 700 °C

Advanced Engineering Materials, EarlyView.
This study shows that superalloys used in aircraft engine disks become much more prone to deformation at high temperatures if they have been strained during manufacturing. This effect increases with the level of prior strain but eventually reaches a limit.
Fabio Machado Alves da Fonseca, Patrick Villechaise, Malik Durand, Arnaud Longuet, Florent Coudon, Loïc Signor, Julien De Jaeger, Dominique Eyidi, Nathalie Bozzolo, Jonathan Cormier   +9 more
wiley   +1 more source

An Enhanced Random Vibration and Fatigue Model for Printed Circuit Boards

Latin American Journal of Solids and Structures
Aerospace vehicles are mostly exposed to random vibration loads during its operational lifetime. These harsh conditions excites vibration responses in the vehicles printed circuit boards, what can cause failure on mission functionality due to fatigue ...
Bruno de Castro Braz, Flávio Luiz de Silva Bussamra   +1 more
doaj   +1 more source

A comparison of lifetime prediction methods for a thermal fatigue experiment [PDF]

International Journal of Fatigue, 2006
This paper is dedicated to the comparison of several numerical models for estimating the lifetime in a fatigue experiment. The models simulate the SPLASH experiment, which produces thermal fatigue by locally quenching stainless steel specimens. All models predict first a stabilized mechanical state (plastic shakedown) and then a lifetime prediction ...
Amiable, Sébastien, Chapuliot, Stéphane, Constantinescu, Andreï, Fissolo, Antoine   +3 more
openaire   +2 more sources

Low Cycle Repetitive Loading of Ti‐6Al‐4V‐Epoxy Composite Lattice Structures for Enhanced Energy Dissipation and Damage Tolerance

Advanced Engineering Materials, EarlyView.
Composite Ti–6Al–4V–epoxy lattice structures are additively manufactured and epoxy infiltrated for cyclic loading. At low lattice volume fractions, hybridization produces synergistic gains in stiffness and energy dissipation. At higher volume fractions, synergy diminishes, although composites still exceed metallic lattices in specific energy ...
Joey Tallon, Jordan Noronha, Justin Dirrenberger, Andrey Molotnikov   +3 more
wiley   +1 more source

A Hybrid Prognostic Methodology and its Application to Well-Controlled Engineering Systems [PDF]

, 2015
This thesis presents a novel hybrid prognostic methodology, integrating physics-based and data-driven prognostic models, to enhance the prognostic accuracy, robustness, and applicability.
Eker, Ömer Faruk
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