LSE method using the CHSS model
TypeArticles dans des revues avec comité de lecture
Testing the reliability at a nominal stress level may lead to extensive test time. Estimations of reliability parameters can be obtained faster thanks to step-stress accelerated life tests (ALT). Usually, a transfer functional defined among a given class of parametric functions is required, but Bagdonavičius and Nikulin showed that ALT tests are still possible without any assumption about this functional. When shape and scale parameters of the lifetime distribution change with the stress level, they suggested an ALT method using a model called CHanging Shape and Scale (CHSS). They estimated the lifetime parameters at the nominal stress with maximum likelihood estimation (MLE). However, this method usually requires an initialization of lifetime parameters, which may be difficult when no similar product has been tested before. This paper aims to face this issue by using an iterating least square estimation (LSE) method. It will enable one to initialize the optimization required to carry out the MLE and it will give estimations that can sometimes be better than those given by MLE.
Fichier(s) constituant cette publication
Cette publication figure dans le(s) laboratoire(s) suivant(s)
Visualiser des documents liés par titre, auteur, créateur et sujet.
BRANDICOURT, Pierre; SOL, José Cuesta Del; ALDEA, Sorin; BONNEVILLE, Fabrice; CINTAS, Pascal; BRAUGE, David (ELSEVIER, 2018)Introduction. Hirayama disease is a rare cervical myelopathy predominantly affecting young adults andmainly found in Asia. It results in a pure motor distal lesion of the upper limbs with slow progression.Dynamic magnetic ...
LANTIERI, Pascal; GUERIN, Fabrice; HAMBLIA, Ridha (John Wiley & Sons, Ltd, 2010)This paper presents an accelerated life testing method applicable to devices or systems when no analytical relationship with respect to the stress level can be defined. If a numerical approach remains possible, the numerical ...
VINCENT, Pascal; DESCOMBIN, Alexis; DAGHER, Samer; SEOUDI, Tarek; LAZARUS, Arnaud; THOMAS, Olivier; AYARI, Anthony; PURCELL, Stephen T.; PERISANU, Sorin (AIP Publishing, 2019)In this work, we study the nonlinear coupling between the transverse modes of nanoresonators such as nanotubes or nanowires in a singly clamped configuration. We previously showed that at high driving, this coupling could ...
Is There a Place for the Posterior Approach in Cases of Acute Myelopathy on Thoracic Disc Hernia ? BRAUGE, David; MADKOURI, Rachid; REINA, Vincent; BENNIS, Saad; BAUSSART, Bertrand; MIREAU, Etienne; ALDEA, Sorin; GAILLARD, Stephan (ELSEVIER, 2017)BACKGROUND: Acute myelopathy in cases of thoracic disc herniation (TDH) is an exceptional condition for which the treatment is not codified. Here we present the results of a standardized procedure in 10 patients who underwent ...
Dynamic recrystallization behaviour of spheroidal graphite iron. Application to cutting operations LE MERCIER, Kévin; WATREMEZ, Michel; PUCHI-CABRERA, Eli-Saul; DUBAR, Laurent; GUERIN, Jean-Daniel; FOUILLAND-PAILLE, Laurence (Elsevier, 2017)To increase the competitiveness of manufacturing processes, numerical approaches are unavoidable. Nevertheless, a precise knowledge of the thermo-mechanical behaviour of the materials is necessary to simulate accurately ...