Results 51 to 60 of about 15,039 (223)

A probabilistic high cycle fatigue model applied to cast Al-Si alloys [PDF]

open access: yes, 2013
In this work, the high cycle fatigue behavior of cast hypo-eutectic Al-Si alloys is investigated. It is observed that two different coexisting fatigue initiation mechanisms can occur in these materials depending on the presence of different ...
AUGUSTINS, Louis   +3 more
core   +3 more sources

SensHB.Q: A Cost‐Effective Force‐Sensitive Handlebar to Control Omnidirectional Robots and Wheelchairs

open access: yesJournal of Field Robotics, EarlyView.
ABSTRACT This paper details the design and development of SensHB.Q, a force‐sensitive handlebar intended for caregivers driving electric‐powered wheelchairs, particularly those with omnidirectional mobility. The same interface can also be used in the future to operate other omnidirectional motorized systems, such as mobile robots, hospital beds, and ...
Luigi Tagliavini, Giuseppe Quaglia
wiley   +1 more source

Theoretical backgrounds of durability analysis by normalized equivalent stress functionals [PDF]

open access: yes, 2003
Generalized durability diagrams and their properties are considered for a material under a multiaxial loading given by an arbitrary function of time. Material strength and durability under such loading are described in terms of durability, safety factor ...
Bolotin, V. V.   +13 more
core   +1 more source

Increasing the Reuse Potential of High‐Strength Steels by Extending the Fatigue Life through Surface Treatments

open access: yessteel research international, EarlyView.
Surface reconditioning through mechanical and electrochemical polishing is shown to extend the fatigue life of predamaged 42CrMo4 steel by over 12 times. By removing ≈100 μm of surface material, surface‐driven fatigue damage is mitigated. This study introduces a reuse potential metric to evaluate fatigue recovery and support sustainable steel reuse. To
Ayush Shrivastava   +7 more
wiley   +1 more source

FATIGUE LIFE PREDICTION OF NOTCHED STRUCTURE USING COMBINED CRITICAL PLANE-CRITICAL DISTANCE APPROACH (MT)

open access: yesJixie qiangdu, 2023
In engineering practice, due to various functional requirements, structures with geometric discontinuities occur widely; in addition, most structures undergo complex multiaxial loads, which drives the development of relevant theories.
LIAO Ding   +4 more
doaj  

Fatigue analysis of catenary contact wires for high speed trains [PDF]

open access: yes, 2011
The fatigue fracture is one of the most critical failures which may occur on the high speed network because it is undetectable and it has a huge impact on traffic disruption.
BALMES, Etienne   +3 more
core  

The effect of quenching and defects size on the HCF behaviour of Boron steel [PDF]

open access: yes, 2014
This work investigates the effect of natural and artificial surface defects and quenching on the fatigue strength of a Boron steel (22MnB5). A vast experimental campaign has been undertaken to study the high cycle fatigue behaviour and more specifically ...
ABRIVARD, Benjamin   +4 more
core   +6 more sources

Evaluation of Creep Life and Damage for AISI 304 Under Combined Tension/Torsion Multiaxial Loading

open access: yesFatigue &Fracture of Engineering Materials &Structures, EarlyView.
ABSTRACT In the present study, to investigate the effects of temperature and principal stress ratio on the multiaxial creep rupture time of AISI 304 stainless steel, creep tests were conducted under various principal stress ratios at 650°C and 700°C.
Lei He, Takamoto Itoh, Noritake Hiyoshi
wiley   +1 more source

Critical plane approach in stage i and stage ii of fatigue under multiaxial loading [PDF]

open access: yes, 2006
This paper deals with the estimation problem of the critical plane orientation in multiaxial fatigue failure criteria. Experimental results from multiaxial proportional, nonproportional cyclic loading and variable-amplitude bending and torsion were used ...
Karolczuk, A., Macha, E.
core  

A crack-like notch analogue for a safe-life fretting fatigue design methodology [PDF]

open access: yes, 2003
Various analogies have recently been proposed for comparing the stress fields induced in fretting fatigue contact situations, with those of a crack and a sharp or a rounded notch, resulting in a degree of uncertainty over which model is most appropriate ...
Ciavarella, M.
core   +1 more source

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