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See detailFatigue Assessment Diagram in Updating failure probability
Mai, Anh Quang ULiege

Poster (2016, December 05)

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See detailFATIGUE CRACK PROPAGATION IN HSS S690QL WELDED CONNECTIONS IN BRIDGES
Bouffioux, Chantal ULiege; Canales Cardenas, Cristian ULiege; Duchene, Laurent ULiege et al

Conference (2017, June)

The fatigue and crack study of HSS S690QL steel welded pieces is first experimentally analyzed by fatigue tests on small samples of Base Material (BM), Heat Affected Zone (HAZ) and Weld Metal (WM ... [more ▼]

The fatigue and crack study of HSS S690QL steel welded pieces is first experimentally analyzed by fatigue tests on small samples of Base Material (BM), Heat Affected Zone (HAZ) and Weld Metal (WM) separately for several stress ratios, stress levels, on smooth and notched samples. The Lemaître-Chaboche fatigue model combined with the stress gradient method and the three sets of parameters are found to accurately describe the behavior of each material. Another experimental campaign with larger pieces (closer to the scale of the bridge connections) called "small scale samples", with/without welded stiffeners, with several geometries and with/without post-treatment has shown each effect separately: the scale and machining effects, residual stresses due to the welding, geometrical and post-treatments effects. Numerical simulations of these experiments are used to improve and validate the material data, with a study in real context and size. Then, the characterized fatigue damage model is coupled with the element deletion method to model the propagation of cracks along the welded samples and the numerical predictions are compared with experimental results in order to validate the approach. [less ▲]

Detailed reference viewed: 35 (7 ULiège)
Peer Reviewed
See detailFatigue et auto-évaluation chez des patients atteints de sclérose en plaques
DELRUE, Gaël ULiege; Blavier, Adelaïde ULiege; HENNEN, Julie et al

Poster (2014, December)

Different fatigue scales specific for multiple sclerosis patients correlate quite differently with other psychological measures which gives rise to a necessary reflexion about the tools used in clinical ... [more ▼]

Different fatigue scales specific for multiple sclerosis patients correlate quite differently with other psychological measures which gives rise to a necessary reflexion about the tools used in clinical practice and their meanings. [less ▲]

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See detailFatigue index reproducibility in isokinetic testing
Paulus, Julien ULiege; Bosquet, Laurent; Gremeaux, Vincent et al

in De Haan, Arnold; De Ruiter, Jo; Tsolakidis, Elias (Eds.) Book of abstracts (2014, July)

Detailed reference viewed: 103 (7 ULiège)
See detailLa fatigue motrice et ses implications dans les pathologies du système nerveux
PHAN BA, Remy ULiege; MARTIN, Didier ULiege

Scientific conference (2013, March 13)

Detailed reference viewed: 27 (5 ULiège)
See detailFatigue musculaire
Julia, Marc; Perrey, S.; Dupeyron, A. et al

Book published by Masson (2010)

Detailed reference viewed: 89 (11 ULiège)
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See detailFatigue Reliability of joint connections in support structure of offshore wind turbines
Mai, Anh Quang ULiege

Master of advanced studies dissertation (2014)

This study is my initial attempt to investigate the evolution of fatigue reliability of welded joints in offshore wind turbine support structures. This information is crucial to update the inspected data ... [more ▼]

This study is my initial attempt to investigate the evolution of fatigue reliability of welded joints in offshore wind turbine support structures. This information is crucial to update the inspected data (crack sizes, probability of crack detection) to make the plan for the next inspection and maintenance of existing offshore structures in general. The thesis is limited to tracing back the fatigue reliability of welded joints from their design information. The later work for inspection planning will be continued in the framework of my Ph.D thesis. On the basis of the results of this research, it can be concluded that for the fatigue reliability problem, FORM and SORM gives results with high accuracy compared to MCS and that the design point found by FORM/SORM are really the global minimal reliability index. The assumption in dealing with cumulated damage shows a good agreement with MCS. This is the foundation for using a simplified LSF in reliability calculation of accumulative fatigue problem. [less ▲]

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See detailFatigue resistant designs using stress-based topology optimization
Collet, Maxime ULiege; Bauduin, Simon ULiege; Fernandez Sanchez, Eduardo Felipe ULiege et al

Conference (2017, September 15)

Fatigue is an important mode of failure in mechanical engineering and accounting for it as soon as the early stage of design using topology optimization sounds primordial. Structures undergoing high-cycle ... [more ▼]

Fatigue is an important mode of failure in mechanical engineering and accounting for it as soon as the early stage of design using topology optimization sounds primordial. Structures undergoing high-cycle fatigue can be described by the stress-based approach and then a stress-based topology optimization framework, which has received great interest since almost 20 years because of the innovative designs that can be achieved to answer strength requirements, can be used. Literature reports many good results for shape optimization [Mrzyglod & Zielinsky(2006)] whereas in the eld of topology optimization several authors have shown that considering fatigue in an optimization framework leads to more relevant solutions where fluctuating loads are involved [Holmberg E.(2015), Collet et al(2016), Sv ard(2015)]. The good behaviour of the implementation of an advanced fatigue criterion, i.e. the multiaxial Dang Van criterion [Dang Van et al(1989)] is first investigated in the framework of a density-based topology optimization problem. The choice of this fatigue criterion is justifed by its good applicability in automotive or aeronautic industry as well as its relevancy with respect to experimental results. We present the sensitivity analysis with stress constraints and present some classical benchmarks to illustrate the behaviour of the optimized solution. In a second time, the fatigue resistance is introduced in the well-known microstructural design [Sigmund (2000)] also know as architectured material design which are now considered in mechanical engineering because of their manufacturability thanks to additive manufacturing processes. Ensuring the fatigue resistance of the cellular material will by extension ensure the structural integrity of the overall structure itself. The optimization is performed by using the MMA optimizer [Svanberg(1987)] whereas the singularity phenomenon of the stress constraints is circumvented by using the qp-relaxation [Bruggi(2008)]. Both types of optimization framework are evaluated in term of their numerical performances and are compared to classical results generated by a regular stress-based topology optimization. Finally, the results are 3D-printed to assess for their manufacturability. [less ▲]

Detailed reference viewed: 29 (1 ULiège)
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See detailFatigue resistant designs using stress-based topology optimization
Collet, Maxime ULiege; Bauduin, Simon ULiege; Fernandez Sanchez, Eduardo Felipe ULiege et al

Conference (2017, June 08)

Stress based topology optimization has received great interest since almost 20 years because of the innovative designs that can be achieved to answer strength requirements. Fatigue is an important mode of ... [more ▼]

Stress based topology optimization has received great interest since almost 20 years because of the innovative designs that can be achieved to answer strength requirements. Fatigue is an important mode of failure in mechanical engineering and accounting for it as soon as the early stage of design using topology optimization sounds primordial. Literature reports many good results for shape optimization [Mrzyglod & Zielinsky(2006)] whereas in the field of topology optimization several authors have shown that considering fatigue in an optimization framework leads to more relevant solutions where fluctuating loads are involved [Holmberg E.(2015), Collet et al(2016), Svärd(2015)]. In order to check the good behavior of the implementation, we first investigate the implementation of an advanced fatigue criterion, i.e. the multiaxial Dang Van criterion [Dang Van et al(1989)], in the framework of a density-based topology optimization problem. The choice of this fatigue criterion is justifed by its good applicability in automotive or aeronautic industry as well as its relevancy with respect to experimental results. We present the sensitivity analysis with stress constraints and present some classical benchmarks to illustrate the behavior of the optimized solution. In a second time, we introduce the fatigue resistance in the well-known microstructural design [Sigmund (1999)]. The new additive manufacturing techniques allow to fabricate components exhibiting architectured materials. In this perspective, ensuring the fatigue resistance of the cellular material will by extension ensure the structural integrity of the overall structure itself. Both types of optimization framework are evaluated in term of their numerical performances and are compared to classical results generated by a regular stress-based topology optimization. Finally, the results are 3D-printed to assess for their manufacturability. [less ▲]

Detailed reference viewed: 35 (1 ULiège)
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See detailFatigue, facteur de risque de lésions musculaires chez le sportif?
Croisier, Jean-Louis ULiege; Forthomme, Bénédicte ULiege; Maquet, Didier ULiege et al

in Julia, M.; Perrey, S.; Dupeyron, A. (Eds.) et al Fatigue musculaire (2010)

Detailed reference viewed: 725 (34 ULiège)
Peer Reviewed
See detailFatistes des villes, fatistes des champs
Henrard, Nadine ULiege

in Leroux, Xavier (Ed.) Vers une poétique du discours dramatique au Moyen Âge. Actes du Colloque international organisé au Palais Neptune de Toulon les 13 et 14 novembre 2008 (2011)

Detailed reference viewed: 37 (10 ULiège)
Peer Reviewed
See detailFattening of Belgian Blue double muscled culled females : metabolism data
Cabaraux, Jean-François ULiege; de Behr, Vanessa; Hornick, Jean-Luc ULiege et al

in Book of Abstracts of the 52nd Annual Meeting of the European Association for Animal Production (2001)

Detailed reference viewed: 21 (4 ULiège)
Peer Reviewed
See detailFattening of Belgian Blue double muscled culled females : technical data
Cabaraux, Jean-François ULiege; de Behr, Vanessa; Hornick, Jean-Luc ULiege et al

in Book of abstracts of the 52nd Annual Meeting of the European Association for Animal Production (2001)

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See detailFattening of Belgian Blue double-muscled culled females: animal performance, carcass characteristics and meat quality
Cabaraux, Jean-François ULiege; Hornick, Jean-Luc ULiege; Dufrasne, Isabelle ULiege et al

in Annales de Médecine Vétérinaire (2003), 147(6, DEC-JAN), 423-431

In order to measure Animal performance and, carcass and meat characteristics of Belgian Blue double-muscled culled females, a fattening trial was carried out on a total of 78 animals. Fifteen females were ... [more ▼]

In order to measure Animal performance and, carcass and meat characteristics of Belgian Blue double-muscled culled females, a fattening trial was carried out on a total of 78 animals. Fifteen females were slaughtered at the beginning of the trial and 63 were fattened on a maize silage based diet. The initial average live weight was 571.2kg. The total fattening gain was 91.1 kg for a period of 91.4 days. At slaughter, the warm carcass weight was 405.9kg and the killing-out proportion 63.3%. The carcasses were characterised by a high proportion of muscles (67.6%) and rather low proportions of adipose tissue (18.2%) and bones (14.2%). The muscle and adipose tissue accretions were 36.0 and 28.2 kg. Meat was lean as indicated by high protein content (88.5%) and low fat content (6.6%) in dry matter. A high proportion of polyunsaturated fatty acids was also found (6.8 mol %). [less ▲]

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Peer Reviewed
See detailFattening of young bulls: comparaison of three breeds and two managements
Cabaraux, Jean-François ULiege; Hornick, Jean-Luc ULiege; Istasse, Louis ULiege et al

in Book of absracts of the 54th Annual Meeting of the European Association for Animal Production (2003)

Detailed reference viewed: 6 (2 ULiège)
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See detailFattening performance, carcass quality and economic efficacy of crossbred Landrace × (Yorkshire × Mong Cai) pigs raised in households
Nguyen Van Duy, ULiege; Vu Dinh, Ton; Phan Van, Chung

in Journal of Sciences and Development (2008), VI(1), 56-61

A study was conducted on 10 households in Cam Hoang commune (Cam Giang district of Hai Duong province) from June 2006 to June 2007 with 164 fattening pigs in order to evaluate fattening performance ... [more ▼]

A study was conducted on 10 households in Cam Hoang commune (Cam Giang district of Hai Duong province) from June 2006 to June 2007 with 164 fattening pigs in order to evaluate fattening performance, carcass quality and economic efficacy of crossbred Landrace × (Yorkshire × Mong Cai) pigs which were raised in households. Result showed that the crossbred pigs grew well under the household conditions (live weight of 82,96kg per head at slaughtering age of 180 days, ADG of 605.59 gram, FCR of 3.04). The lean percentage was fairly high (49.99%). Meat quality of the crossbred pigs was satisfactory. The net profit was about 309865 VND/head. [less ▲]

Detailed reference viewed: 21 (1 ULiège)
See detailFattori di infertilità e di infecondità nella vacca
Hanzen, Christian ULiege

Learning material (2011)

Le thème général proposé a fait l'objet de 5 présentations orales.

Detailed reference viewed: 72 (4 ULiège)
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See detailFatty Acid Binding Protein [Fragment] from Ovis aries placenta - Access number P83204
El Amiri, B.; Remy, B.; Melo de Sousa, Noelita ULiege et al

E-print/Working paper (2002)

N-terminal microsequence obtained after purification and characterization of placental proteins in ovine species. Proteins were submitted to SwissProt databank.

Detailed reference viewed: 9 (0 ULiège)
See detailFatty acid composition of residual yolk and liver from broiler chicks hatching from omega-3 enriched eggs
Koppenol, Astrid; Delezie, Evelyne; Wang, Yufeng et al

in Proceedings of the XXIV World's Poultry Congress (2012)

Detailed reference viewed: 13 (0 ULiège)