Today, mobile devices are being used for various applications such as making voice/video calls, browsing Internet and so on. The operating time and battery consumption spent in those activities affect the battery life of mobile devices. In this paper, we propose a method for predicting the battery lifetime of mobile devices based on usage patterns. We define the possible states of mobile device...

A methodology is evaluated to predict the probability of specimen failure with subsequent fatigue, after a short surface crack has been detected in Al 2219-T851 alloy. Cracks are detected and tracked to failure using optical microscopy. Predictions of remaining lifetime distributions are made with a i~onte Carlo procedure in conjunction with growth laws which model the effect of grains of diffe...

Almost all structural applications of adhesive joints will experience cyclic loading and in most cases this will irregular in nature, a form of loading commonly known as variable amplitude fatigue (VAF). This paper is concerned with the VAF of adhesively bonded joints and has two main parts. In the first part, results from the experimental testing of adhesively bonded single lap joints subjecte...

The localized, self organizing, robust, scalable and energy-efficient data aggregation tree approaches for sensor networks, is called as Localized Power-Efficient Data Aggregation Protocols (L-PEDAPs). L-PEDAPs are based on LMST and RNG topologies, which can be estimated minimum spanning tree and can be computed efficiently using only position or distance information of one-hop neighbors. In or...

The Snecma Propulsion Solide, SAFRAN Group Company, has developed a range of woven SiC/SiC composites designated as self-healing materials [1]. The composites are build up from woven yarns of SiC fibres infiltrated by a multi-layered ceramic matrix. During the load, a first crack network, perpendicular to the principal traction, appear in the matrix between yarns [2]. Once it is saturated, a se...

With the rapid development of semiconductor lighting technology, the LED will gradually replace the traditional lighting to be the lighting market-led. However, the reliability life of LED products is the key to restrict its development. For further study on the reliability in this paper, the stress accelerated test was adapt to explore the reliability of LED, meanwhile, the failure of failure ...

0026-2714/$ see front matter 2013 Elsevier Ltd. All rights reserved. http://dx.doi.org/10.1016/j.microrel.2013.06.005 ⇑ Corresponding author. Address: Department of High Voltage Eng., Coll. of Electr. and Electron. Eng., Huazhong Univ. of Sci. and Technol., No.1037 Luoyu Road, Hong Shan District, 430074 Wuhan, Hubei, China. Tel.: +86 027 87559462; fax: +86 02787559349. E-mail address: leehua@ma...

In this paper Bayesian networks are used to predict complex semiconductor lifetime data. The data of interest is a mixture of two log-normal distributed heteroscedastic components where data is right censored. To understand the complex behavior of data corresponding to each mixture component, interactions between geometric designs, material properties and physical parameters of the semiconducto...

Today’s highly competitive environment in the commercial air transportation business instigates airline companies to continue operating their aircrafts beyond the design life, as long as the maintenance ascertaining their safe operation is more cost-effective than the investment into a new aircraft. In the context of damage tolerance of aging aircrafts, the residual strength of the fuselage ski...

We present the results of a quenched lattice calculation of the operator matrix elements relevant for predicting the Bs width difference. Our main result is (∆ΓBs/ΓBs) = (4.7 ± 1.5 ± 1.6) × 10−2, obtained from the ratio of matrix elements R(mb) = 〈B̄0 s |QS |B0 s 〉/〈B̄0 s |QL|B s 〉 = −0.93(3)+0.00 −0.01. R(mb) was evaluated from the two relevant B-parameters BMS S (mb) = 0.86(2) +0.02 −0.03 and B...